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Study For Patients With Untreated Gastric Cancer Who Will Receive Capecitabine And Lapatinib

An Exploratory, Phase II Trial to Determine the Association of Lapatinib Induced Fluoropyrimidine Gene Changes With Efficacy Parameters of Lapatinib and Capecitabine in First Line Gastric Cancer

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00526669
Enrollment
68
Registered
2007-09-10
Start date
2008-03-31
Completion date
2015-01-31
Last updated
2016-01-29

For informational purposes only โ€” not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neoplasms, Gastrointestinal Tract

Keywords

tumor biopsy, capecitabine, first line, Gastro Esophageal (GE) Junction Cancer, Gastric cancer, newly diagnosed, GE junction, lapatinib, metastatic or unresectable

Brief summary

The study will determine if changes in expression of markers involved in the 5-FU pathways are associated with response to treatment with the combination of lapatinib and capecitabine independent of tumor erbB2 status.

Interventions

oral lapatinib (1250mg) administered as a monotherapy run-in followed by its combination with capecitabine

Sponsors

GlaxoSmithKline
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Has signed inform consent * Untreated, newly diagnosed, advanced metastatic or unresectable gastric cancer, including the gastro-esophageal junction * Tumor accessible to and patient consent for endoscopic biopsy at study start and after 7 days of single agent Lapatinib * Measurable disease according to RECIST criteria * Male or female \> or = 18 years of age * Cardiac ejection fraction within the institutional range of normal as measured by echocardiogram * must have adequate organ function as defined by baseline laboratory values

Exclusion criteria

* Gastric carcinoid, sarcomas, or squamous cell cancer * Pregnant or lactating females * Intractable nausea, vomiting, or gastro intestinal obstruction requiring decompression and drainage with a gastric tube or nasogastric suction. * patients who require continuous enteral feeding * Malabsorption syndrome or uncontrolled inflammatory GI disease (Crohn's or ulcerative colitis * Known history of uncontrolled or symptomatic angina, arrhythmias, or congestive heart failure

Design outcomes

Primary

MeasureTime frameDescription
Change From Start of Run-in Period in Biomarker Expression Levels at Day 0evaluated at baseline and after 7 days of study treatmentParticipants were analyzed for intratumoral expression levels of genes involved in the 5-fluorouracil (FU) pathway and lapatinib-targeted genes. Change in biomarker expression levels was calculated as the levels measured after the lapatinib Run-in Period (Baseline) of the study minus the levels measured at the start of monotherapy (Day -7). EGFR, epidermal growth factor receptor; HER, human epidermal growth factor receptor. Data are presented as ratios of the normalized gene expression of the target gene to that of beta actin.
Response Rate (Measured as the Percentage of Participants With Response [Complete Response or Partial Response])From Baseline (Day 0) until disease progression or death due to any cause evaluated every 6 or 12 weeks (up to approximately 85 weeks)Response is defined as documented evidence of complete response (CR) or partial response (PR). The investigator evaluated response based on Response Evaluation Criteria in Solid Tumors (RECIST) criteria. Complete response is defined as the disappearance of all target lesions (TLs) and non-TLs and the appearance of no new lesions (NLs). Partial response for TLs is defined as \>= a 30% decrease in the sum of the longest diameter (LD) of TLs, taking as a reference the Baseline sum LD. For non-TLs it is defined as the persistence of 1 or more non-TL and no new TLs or non-TLs.
Percentage of Participants (Par.) With 5-month Progression-free Survival (PFS)From initial treatment up to 24 weeks (next available assessment after the 5-month assessment for progressive disease)5-month (mo.) PFS was defined as the percentage of par. who were alive/progression free for 5 months from the time of initial treatment. PFS is defined as the time from the initial treatment until the first observation of disease progression (DP)/death due to any cause; the percentage of par. whose follow-up ended or was ongoing was reported. DP is defined as symptomatic progression or the appearance of \>=1 NL and/or unequivocal progression of existing non-TLs, and a \>=20% increase in the sum of the LD of TLs, taking as a reference the smallest sum LD recorded since treatment started.

Secondary

MeasureTime frameDescription
Time to Progression (All Deaths Due to Non-PD Are Treated as Competing Risk)From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)Time to progression is defined as the time from the initial treatment (first dose) until the first documented radiological symptomatic sign of disease progression. Time to progression data are presented as cumulative incidence estimate, which is defined as the time from the initial treatment until crude hazard probability of occurrence of a particular event is reached to a particular point. All factors that hinder the observation of the event are defined as competing risks.
Time to ResponseBaseline (Day 0) until first documented evidence of response (up to approximately 60 weeks)Time to response is defined as the time from the initial treatment until the first documented evidence of CR (disappearance of all TLs and non-TLs and the appearance of no new lesions) or PR (\>= a 30% decrease in the sum of the longest diameter of TLs, taking as reference the Baseline sum longest diameter) (whichever status was recorded first). Time to response data are presented as cumulative incidence estimate, which is defined as the time from the initial treatment until crude hazard probability of the occurrence of a particular event is reached to a particular point.
Duration of ResponseFrom date of first documented evidence of response until the date of first documented sign of disease progression or death due to any cause (up to approximately 78 weeks)Duration of response is defined as the time from the first documented evidence of tumor response (CR or PR) until the first documented sign of disease progression or death due to any cause, whichever came first.
Number of Participants in the Indicated Categories for Best Overall Response (BOR)From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)Best overall response was evaluated by the investigator based on RECIST criteria: CR; PR; Stable Disease (SD), defined as no sufficient shrinkage to qualify for PR, no sufficient increase to qualify for progressive disease (PD), taking as reference the smallest sum LD since the treatment started; PD, defined as at least a 20% increase in the sum of the LD of target lesions, taking as a reference the smallest sum LD recorded since the treatment started or the appearance of \>= 1 new lesions; Unknown, defined as participants who do not have CR, PR, SD, or PD.
Number of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyToxicity was measured in grades (AE severity) per National Cancer Institute Common Toxicity Criteria for Adverse Event (NCI CTCAE) version (v) 3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For albumin (per blood samples): G 1 (\<lower limit of normal \[LLN\] to 3 grams per deciliter \[g/dL\]), mild; G 2 (\<3 to 2 g/dL), moderate; G 3 (\<2 g/dL), severe; G 4 (value not available), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyToxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For ALP: G 1 (upper limit of normal \[ULN\] to 2.5x ULN), mild; G 2 (\>2.5 to 5.0x ULN), moderate; G 3 (\>5.0 to 20.0x ULN), severe; G 4 (\>20.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of AST. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For AST: G 1 (\>ULN to 2.5x ULN), mild; G 2 (\>2.5 to 5.0x ULN), moderate; G 3 (\>5.0 to 20.0x ULN), severe; G 4 (\>20.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of ALT. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For ALT: G 1 (\>ULN to 2.5x ULN), mild; G 2 (\>2.5 to 5.0x ULN), moderate; G 3 (\>5.0 to 20.0x ULN), severe; G 4 (\>20.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of total bilirubin. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For total bilirubin: G 1 (\>ULN to 1.5x ULN), mild; G 2 (\>1.5 to 3.0x ULN), moderate; G 3 (\>3.0 to 10.0x ULN), severe; G 4 (\>10.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for calcium evaluation. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For calcium (low and high, respectively): G 1 (\<LLN to 8.0 mg/dL; \>ULN to 11.5x ULN), mild; G 2 (\<8.0 to 7.0 mg/dL; \>11.5 to 12.5 ULN), moderate; G 3 (\<7.0 to 6.0 mg/dL; \>12.5 to 13.5 mg/dL), severe; G 4 (\<6 mg/dL; \>13.5 mg/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
PFSFrom Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)PFS is defined as the time from the initial treatment until the first observation of disease progression or death due to any cause. The date of documented disease progression was defined as the earliest date of radiographic disease assessment progression or symptomatic progression, whichever came first. For participants who did not die/progress, survival was censored at the time of the last assessment (or contact).
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of glucose. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For glucose (high and low, respectively): G 1 (\>ULN to 160 mg/dL; \<LLN to 55 mg/dL), mild; G 2 (\>160 to 250 mg/dL; \<55 to 40 mg/dL), moderate; G 3 (\>250 to 500 mg/dL; \<40 to 30 mg/dL), severe; G 4 (\>500 mg/dL; \<30 mg/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyToxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For potassium (high and low \[per blood samples\], respectively): G 1 (\>ULN to 5.5 millimoles per liter \[mmol/L\]; \<LLN to 3.0 mmol/L), mild; G 2 (\>5.5 to 6.0 mmol/L; value not available), moderate; G 3 (\>6.0 to 7.0 mmol/L; \<3.0 to 2.5 mmol/L), severe; G 4 (\>7.0 mmol/L; \<2.5 mmol/L), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for magnesium evaluation. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For magnesium (high and low, respectively): G 1 (\>ULN to 3.0 mg/dL; \<LLN to 1.2 mg/dL), mild; G 2 (value not available; \<1.2 to 0.9 mg/dL), moderate; G 3 (\>3.0 to 8.0 mg/dL; \<0.9 to 0.7 mg/dL), severe; G 4 (\>8.0 mg/dL; \<0.7 mg/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for sodium evaluation. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of each AE severity. For sodium (high and low, respectively): G 1 (\>ULN to 150 mmol/L; \<LLN to 130 mmol/L), mild; G 2 (\>150 to 155 mmol/L; value not available), moderate; G 3 (\>155 to 160 mmol/L; \<130 to 120 mmol/L), severe; G 4 (\>160 mmol/L; \<120 mmol/L), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of hemoglobin. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For hemoglobin: G 1 (\<LLN to 10 g/dL), mild; G 2 (\<10.0 to 8.0 g/dL), moderate; G 3 (\<8.0 to 6.5 g/dL), severe; G 4 (\<6.5 g/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of lymphocytes. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For lymphocytes: G 1, mild; G 2, moderate; G 3, severe; G 4, life threatening/disabling; G 5, death related to AE; ranges were provided by local laboratories. Change from Baseline was measured as any grade increase (AGI), increase to G 3 (ItoG3), and increase to G 4 (ItoG4). Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of total neutrophils. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For neutrophils: G 1 (\<LLN to 1500/millimeters cubed \[mm\^3\] of blood plasma \[bp\]), mild; G 2 (\<1500 to 1000/mm\^3 of bp), moderate; G 3 (\<1000 to 500/mm\^3 of bp), severe; G 4 (\<500/mm\^3 of bp), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of platelet count. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For platelet count: G 1 (\<LLN to 75000/mm\^3 of blood plasma \[bp\]), mild; G 2 (\<75000 to 50000/mm\^3 of bp), moderate; G 3 (\<50000 to 25000/mm\^3 of bp), severe; G 4 (\<25000/mm\^3 of bp), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of WBC count. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For WBCs: G 1 (\<LLN to 3000/mm\^3 of blood plasma \[bp\]), mild; G 2 (\<3000 to 2000/mm\^3 of bp), moderate; G 3 (\<2000 to 1000/mm\^3 of bp), severe; G 4 (\<1000/mm\^3 of bp), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsBaseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapyBlood samples were collected for the evaluation of creatinine. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For creatinine: G 1 (\>ULN to 1.5x ULN), mild; G 2 (\>1.5 to 3.0x ULN), moderate; G 3 (\>3.0 to 6.0x ULN), severe; G 4 (\>6.0x ULN), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.
Overall Survival (OS)From Baseline (Day 0) until death due to any cause evaluated at approximately 12 months (up to approximately 100 weeks)Overall survival is defined as the time from the initial treatment until death due to any cause. A death occurring during the study is defined as a death occurring during treatment or within 30 days of the last administration of study medication.
Time to Progression (All Deaths Are Treated as Competing Risk)From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)Time to progression is defined as the time from the initial treatment (first dose) until the first documented radiological symptomatic sign of disease progression. Time to progression data are presented as cumulative incidence estimate, which is defined as the time from the initial treatment until crude hazard probability of the occurrence of a particular event is reached to a particular point. All factors that hinder the observation of the event are defined as competing risks.

Countries

Canada, Mexico, Russia, South Korea, Taiwan, United States

Participant flow

Recruitment details

68 participants were enrolled in the study, as reflected by the enrollment number in the protocol record; however, one participant elected to not receive study treatment and was thus not included in the Intent-to-Treat Population.

Pre-assignment details

After an initial tumor biopsy (biop.), participants (par.) received lapatinib monotherapy in a 7-day Run-in Period, followed by a second biop. After the second biop., par. received a 14-day course of capecitabine in combination with lapatinib, which continued in the absence of treatment-related toxicity, until disease progression or withdrawal.

Participants by arm

ArmCount
Lapatinib + Capecitabine
Lapatinib tablets were administered orally at a dose of 1250 mg OD and capecitabine tablets were administered orally at a dose of 1000 milligrams per meters squared (mg/m\^2) twice daily (BID) for the first 14 days of each subsequent 21-day cycle. The capecitabine dose schedule was an intermittent regimen consisting of 2 weeks of treatment followed by 1 week of rest (drug-free period). Capecitabine and lapatinib were taken at two different times of the day.
67
Total67

Withdrawals & dropouts

PeriodReasonFG000FG001
Combined Treatment PhaseDeath02
Combined Treatment PhaseLost to Follow-up02
Combined Treatment PhaseSponsor Terminated Study02
Combined Treatment PhaseWithdrawal by Subject02

Baseline characteristics

CharacteristicLapatinib + Capecitabine
Age, Continuous61.4 Years
STANDARD_DEVIATION 12.57
Race/Ethnicity, Customized
American Indian or Alaskan Native
2 participants
Race/Ethnicity, Customized
Asian - East Asian Heritage
30 participants
Race/Ethnicity, Customized
Asian - South East Asian Heritage
1 participants
Race/Ethnicity, Customized
White - White/Caucasian/European Heritage
34 participants
Sex: Female, Male
Female
17 Participants
Sex: Female, Male
Male
50 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
โ€” / โ€”
other
Total, other adverse events
63 / 67
serious
Total, serious adverse events
22 / 67

Outcome results

Primary

Change From Start of Run-in Period in Biomarker Expression Levels at Day 0

Participants were analyzed for intratumoral expression levels of genes involved in the 5-fluorouracil (FU) pathway and lapatinib-targeted genes. Change in biomarker expression levels was calculated as the levels measured after the lapatinib Run-in Period (Baseline) of the study minus the levels measured at the start of monotherapy (Day -7). EGFR, epidermal growth factor receptor; HER, human epidermal growth factor receptor. Data are presented as ratios of the normalized gene expression of the target gene to that of beta actin.

Time frame: evaluated at baseline and after 7 days of study treatment

Population: Intent-to-Treat (ITT) Population: all participants who entered the study and received at least one dose of lapatinib. Only those participants contributing viable samples were analyzed. Different participants contributed samples for different biomarkers.

ArmMeasureGroupValue (MEDIAN)
LapatinibChange From Start of Run-in Period in Biomarker Expression Levels at Day 0Thymidylate synthase (TS), n=340.38 ratio
LapatinibChange From Start of Run-in Period in Biomarker Expression Levels at Day 0Deoxypyridinoline (DPD), n=260.12 ratio
LapatinibChange From Start of Run-in Period in Biomarker Expression Levels at Day 0EGFR/HER1, n=320.15 ratio
LapatinibChange From Start of Run-in Period in Biomarker Expression Levels at Day 0HER2, n=280.01 ratio
LapatinibChange From Start of Run-in Period in Biomarker Expression Levels at Day 0HER3, n=330.87 ratio
p-value: 0.1Wilcoxon signed rank test
p-value: 0.097Wilcoxon signed rank test
p-value: 0.1Wilcoxon signed rank test
p-value: 0.26Wilcoxon signed rank test
p-value: 0.38Wilcoxon signed rank test
Primary

Percentage of Participants (Par.) With 5-month Progression-free Survival (PFS)

5-month (mo.) PFS was defined as the percentage of par. who were alive/progression free for 5 months from the time of initial treatment. PFS is defined as the time from the initial treatment until the first observation of disease progression (DP)/death due to any cause; the percentage of par. whose follow-up ended or was ongoing was reported. DP is defined as symptomatic progression or the appearance of \>=1 NL and/or unequivocal progression of existing non-TLs, and a \>=20% increase in the sum of the LD of TLs, taking as a reference the smallest sum LD recorded since treatment started.

Time frame: From initial treatment up to 24 weeks (next available assessment after the 5-month assessment for progressive disease)

Population: ITT Population. PFS was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (NUMBER)
LapatinibPercentage of Participants (Par.) With 5-month Progression-free Survival (PFS)29 percentage of participants
95% CI: [17.9, 40.3]
Primary

Response Rate (Measured as the Percentage of Participants With Response [Complete Response or Partial Response])

Response is defined as documented evidence of complete response (CR) or partial response (PR). The investigator evaluated response based on Response Evaluation Criteria in Solid Tumors (RECIST) criteria. Complete response is defined as the disappearance of all target lesions (TLs) and non-TLs and the appearance of no new lesions (NLs). Partial response for TLs is defined as \>= a 30% decrease in the sum of the longest diameter (LD) of TLs, taking as a reference the Baseline sum LD. For non-TLs it is defined as the persistence of 1 or more non-TL and no new TLs or non-TLs.

Time frame: From Baseline (Day 0) until disease progression or death due to any cause evaluated every 6 or 12 weeks (up to approximately 85 weeks)

Population: ITT Population

ArmMeasureValue (NUMBER)
LapatinibResponse Rate (Measured as the Percentage of Participants With Response [Complete Response or Partial Response])17.9 percentage of participants
95% CI: [9.6, 29.2]
Secondary

Duration of Response

Duration of response is defined as the time from the first documented evidence of tumor response (CR or PR) until the first documented sign of disease progression or death due to any cause, whichever came first.

Time frame: From date of first documented evidence of response until the date of first documented sign of disease progression or death due to any cause (up to approximately 78 weeks)

Population: ITT Population. Duration of response was estimated for only the subset of participants who had response. Duration of response was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (MEDIAN)
LapatinibDuration of Response18.4 weeks
Secondary

Number of Participants in the Indicated Categories for Best Overall Response (BOR)

Best overall response was evaluated by the investigator based on RECIST criteria: CR; PR; Stable Disease (SD), defined as no sufficient shrinkage to qualify for PR, no sufficient increase to qualify for progressive disease (PD), taking as reference the smallest sum LD since the treatment started; PD, defined as at least a 20% increase in the sum of the LD of target lesions, taking as a reference the smallest sum LD recorded since the treatment started or the appearance of \>= 1 new lesions; Unknown, defined as participants who do not have CR, PR, SD, or PD.

Time frame: From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)

Population: ITT Population

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants in the Indicated Categories for Best Overall Response (BOR)CR0 participants
LapatinibNumber of Participants in the Indicated Categories for Best Overall Response (BOR)PR12 participants
LapatinibNumber of Participants in the Indicated Categories for Best Overall Response (BOR)SD31 participants
LapatinibNumber of Participants in the Indicated Categories for Best Overall Response (BOR)PD16 participants
LapatinibNumber of Participants in the Indicated Categories for Best Overall Response (BOR)Unknown8 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time Points

Blood samples were collected for the evaluation of ALT. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For ALT: G 1 (\>ULN to 2.5x ULN), mild; G 2 (\>2.5 to 5.0x ULN), moderate; G 3 (\>5.0 to 20.0x ULN), severe; G 4 (\>20.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 1, AGI; n=541 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 2, AGI; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 3, AGI; n=612 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 6, AGI; n=473 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 9, AGI; n=412 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 12, AGI; n=312 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 15, AGI; n=222 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 18, AGI; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 21, AGI; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 24, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 30, AGI; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWD/study conclusion, AGI; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWorst-case on-therapy, AGI; n=6510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 2, ItoG3; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 60, ItoG3I; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWD/study conclusion, ItoG3; n=501 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=651 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 2, ItoG4; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWD/study conclusion, ItoG4; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4 ) in Toxicity Grades for Alanine Aminotransferase (ALT) at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time Points

Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For ALP: G 1 (upper limit of normal \[ULN\] to 2.5x ULN), mild; G 2 (\>2.5 to 5.0x ULN), moderate; G 3 (\>5.0 to 20.0x ULN), severe; G 4 (\>20.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 1, AGI; n=546 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 2, AGI; n=575 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 3, AGI; n=618 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 6, AGI; n=475 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 9, AGI; n=412 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 12, AGI; n=315 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 15, AGI; n=222 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 18, AGI; n=173 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 21, AGI; n=144 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 24, AGI; n=114 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 30, AGI; n=93 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 36, AGI; n=51 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 42, AGI; n=41 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 48, AGI; n=31 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 54, AGI; n=22 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 60, AGI; n=21 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 66, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 72, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 78, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 84, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWD/study conclusion, AGI; n=498 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWorst-case on-therapy, AGI; n=6521 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 2, ItoG3; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 21, ItoG3; n=141 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 54, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWD/study conclusion, ItoG3; n=491 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=652 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 2, ItoG4; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 54, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWD/study conclusion, ItoG4; n=490 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Alkaline Phosphatase (ALP) at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time Points

Blood samples were collected for the evaluation of AST. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For AST: G 1 (\>ULN to 2.5x ULN), mild; G 2 (\>2.5 to 5.0x ULN), moderate; G 3 (\>5.0 to 20.0x ULN), severe; G 4 (\>20.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 1, AGI; n=541 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 2, AGI; n=573 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 3, AGI; n=613 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 6, AGI; n=476 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 9, AGI; n=413 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 12, AGI; n=312 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 15, AGI; n=224 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 18, AGI; n=171 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 21, AGI; n=141 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 24, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 30, AGI; n=92 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 84, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWD/study conclusion, AGI; n=507 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWorst-case on-therapy, AGI; n=6516 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 2, ItoG3; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 60, ItoG3I; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWD/study conclusion, ItoG3; n=501 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=651 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 2, ItoG4; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWD/study conclusion, ItoG4; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Aspartate Aminotransferase (AST) at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time Points

Blood samples were collected for calcium evaluation. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For calcium (low and high, respectively): G 1 (\<LLN to 8.0 mg/dL; \>ULN to 11.5x ULN), mild; G 2 (\<8.0 to 7.0 mg/dL; \>11.5 to 12.5 ULN), moderate; G 3 (\<7.0 to 6.0 mg/dL; \>12.5 to 13.5 mg/dL), severe; G 4 (\<6 mg/dL; \>13.5 mg/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 1, AGI; n=557 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 2, AGI; n=564 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 3, AGI; n=605 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 6, AGI; n=473 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 9, AGI; n=413 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 12, AGI; n=312 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 15, AGI; n=221 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 18, AGI; n=172 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 21, AGI; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 24, AGI; n=111 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 30, AGI; n=91 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 42, AGI; n=41 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 54, AGI; n=21 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 60, AGI; n=22 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 84, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWD/study conclusion, AGI; n=4912 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWorst-case on-therapy, AGI; n=6523 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 1, ItoG3; n=550 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 2, ItoG3; n=560 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 3, ItoG3; n=600 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 54, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWD/study conclusion, ItoG3; n=490 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=650 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 1, ItoG4; n=550 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 2, ItoG4; n=560 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 3, ItoG4; n=600 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 54, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWD/study conclusion, ItoG4; n=490 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Calcium at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time Points

Blood samples were collected for the evaluation of creatinine. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For creatinine: G 1 (\>ULN to 1.5x ULN), mild; G 2 (\>1.5 to 3.0x ULN), moderate; G 3 (\>3.0 to 6.0x ULN), severe; G 4 (\>6.0x ULN), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 1, AGI; n=542 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 2, AGI; n=561 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 3, AGI; n=611 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 6, AGI; n=471 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 9, AGI; n=400 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 12, AGI; n=311 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 15, AGI; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 18, AGI; n=172 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 21, AGI; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 24, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 30, AGI; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 42, AGI; n=41 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 84 AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWD/study conclusion, AGI; n=503 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWorst-case on-therapy, AGI; n=656 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 2, ItoG3; n=560 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 9, ItoG3; n=400 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWD/study conclusion, ItoG3; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=650 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 2, ItoG4; n=560 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 9, ItoG4; n=400 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWD/study conclusion, ItoG4; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Creatinine at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time Points

Blood samples were collected for the evaluation of glucose. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For glucose (high and low, respectively): G 1 (\>ULN to 160 mg/dL; \<LLN to 55 mg/dL), mild; G 2 (\>160 to 250 mg/dL; \<55 to 40 mg/dL), moderate; G 3 (\>250 to 500 mg/dL; \<40 to 30 mg/dL), severe; G 4 (\>500 mg/dL; \<30 mg/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 1, AGI; n=5413 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 2, AGI; n=5710 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 3, AGI; n=6110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 6, AGI; n=477 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 9, AGI; n=406 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 12, AGI; n=314 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 15, AGI; n=223 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 18, AGI; n=171 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 21, AGI; n=141 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 24, AGI; n=112 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 30, AGI; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 36, AGI; n=51 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 54, AGI; n=31 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWD/study conclusion, AGI; n=4915 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWorst-case on-therapy, AGI; n=6532 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 2, ItoG3; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 9, ItoG3; n=400 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWD/study conclusion, ItoG3; n=491 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=651 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 2, ItoG4; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 9, ItoG4; n=400 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWD/study conclusion, ItoG4; n=490 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Glucose at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time Points

Blood samples were collected for the evaluation of hemoglobin. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For hemoglobin: G 1 (\<LLN to 10 g/dL), mild; G 2 (\<10.0 to 8.0 g/dL), moderate; G 3 (\<8.0 to 6.5 g/dL), severe; G 4 (\<6.5 g/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 1, AGI; n=6210 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 2, AGI; n=6416 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 3, AGI; n=6212 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 6, AGI; n=4710 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 9, AGI; n=417 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 12, AGI; n=306 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 15, AGI; n=225 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 18, AGI; n=172 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 21, AGI; n=134 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 24, AGI; n=113 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 30, AGI; n=93 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWithdrawal/study conclusion, AGI; n=5116 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWorst-case on-therapy, AGI; n=6533 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 1, ItoG3; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 2, ItoG3; n=640 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 3, ItoG3; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 6, ItoG3; n=471 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 12, ItoG3; n=300 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 15, ItoG3; n=221 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 21, ItoG3; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWithdrawal/study conclusion, ItoG3; n=515 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=659 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 1, ItoG4; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 2, ItoG4; n=640 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 3, ItoG4; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 12, ItoG4; n=301 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 21, ItoG4; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWithdrawal/study conclusion, ItoG4; n=510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Hemoglobin at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=651 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time Points

Blood samples were collected for the evaluation of lymphocytes. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For lymphocytes: G 1, mild; G 2, moderate; G 3, severe; G 4, life threatening/disabling; G 5, death related to AE; ranges were provided by local laboratories. Change from Baseline was measured as any grade increase (AGI), increase to G 3 (ItoG3), and increase to G 4 (ItoG4). Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 1, AGI; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 2, AGI; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 3, AGI; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 6, AGI; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 9, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 12, AGI; n=70 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 15, AGI; n=60 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 18, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 21, AGI; n=42 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 24, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 30, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 36, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 42, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 48, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 54, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 60, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 66, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 72, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 78, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 84, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWithdrawal/study conclusion, AGI; n=101 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWorst-case on-therapy, AGI; n=163 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 1, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 2, ItoG3; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 3, ItoG3; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 6, ItoG3; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 9, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 12, ItoG3; n=70 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 15, ItoG3; n=60 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 18, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 21, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 24, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 30, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 36, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 42, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 48, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 54, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 60, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 66, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 72, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 78, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 84, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWithdrawal/study conclusion, ItoG3; n=100 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 1, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 2, ItoG4; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 3, ItoG4; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 6, ItoG4; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 9, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 12, ItoG4; n=70 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 15, ItoG4; n=60 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 18, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 21, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 24, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 30, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 36, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 42, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 48, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 54, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 60, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 66, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 72, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 78, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWeek 84, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWithdrawal/study conclusion, ItoG4; n=100 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Lymphocytes at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=160 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time Points

Blood samples were collected for magnesium evaluation. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For magnesium (high and low, respectively): G 1 (\>ULN to 3.0 mg/dL; \<LLN to 1.2 mg/dL), mild; G 2 (value not available; \<1.2 to 0.9 mg/dL), moderate; G 3 (\>3.0 to 8.0 mg/dL; \<0.9 to 0.7 mg/dL), severe; G 4 (\>8.0 mg/dL; \<0.7 mg/dL), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 1, AGI; n=331 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 2, AGI; n=336 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 3, AGI; n=443 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 6, AGI; n=374 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 9, AGI; n=361 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 12, AGI; n=270 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 15, AGI; n=181 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 18, AGI; n=161 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 21, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 24, AGI; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 30, AGI; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 54, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWD/study conclusion, AGI; n=356 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWorst-case on-therapy, AGI; n=5917 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 1, ItoG3; n=330 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 2, ItoG3; n=330 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 3, ItoG3; n=440 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 6, ItoG3; n=371 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 9, ItoG3; n=360 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 12, ItoG3; n=270 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 15, ItoG3; n=180 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 18, ItoG3; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 21, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 24, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 54, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWD/study conclusion, ItoG3; n=351 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=592 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 1, ItoG4; n=330 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 2, ItoG4; n=330 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 3, ItoG4; n=440 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 6, ItoG4; n=370 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 9, ItoG4; n=360 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 12, ItoG4; n=270 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 15, ItoG4; n=180 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 18, ItoG4; n=160 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 21, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 24, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 54, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWD/study conclusion, ItoG4; n=350 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Magnesium at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=590 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time Points

Blood samples were collected for the evaluation of platelet count. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For platelet count: G 1 (\<LLN to 75000/mm\^3 of blood plasma \[bp\]), mild; G 2 (\<75000 to 50000/mm\^3 of bp), moderate; G 3 (\<50000 to 25000/mm\^3 of bp), severe; G 4 (\<25000/mm\^3 of bp), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 1, AGI; n=621 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 2, AGI; n=642 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 3, AGI; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 6, AGI; n=472 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 9, AGI; n=413 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 12, AGI; n=302 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 15, AGI; n=222 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 18, AGI; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 21, AGI; n=131 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 24, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 30, AGI; n=92 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWithdrawal/study conclusion, AGI; n=514 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWorst-case on-therapy, AGI; n=6510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 1, ItoG3; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 2, ItoG3; n=640 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 3, ItoG3; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 12, ItoG3; n=300 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 21, ItoG3; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWithdrawal/study conclusion, ItoG3; n=510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=651 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 1, ItoG4; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 2, ItoG4; n=640 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 3, ItoG4; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 12, ItoG4; n=300 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 21, ItoG4; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWithdrawal/study conclusion, ItoG4; n=510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Platelet Count at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time Points

Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For potassium (high and low \[per blood samples\], respectively): G 1 (\>ULN to 5.5 millimoles per liter \[mmol/L\]; \<LLN to 3.0 mmol/L), mild; G 2 (\>5.5 to 6.0 mmol/L; value not available), moderate; G 3 (\>6.0 to 7.0 mmol/L; \<3.0 to 2.5 mmol/L), severe; G 4 (\>7.0 mmol/L; \<2.5 mmol/L), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 1, AGI; n=549 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 2, AGI; n=543 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 3, AGI; n=595 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 6, AGI; n=463 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 9, AGI; n=414 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 12, AGI; n=314 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 15, AGI; n=221 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 18, AGI; n=172 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 21, AGI; n=131 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 24, AGI; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 30, AGI; n=92 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWD/study conclusion, AGI; n=487 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWorst-case on-therapy, AGI; n=6525 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 1, ItoG3; n=541 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 2, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 3, ItoG3; n=591 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 6, ItoG3; n=460 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 21, ItoG3; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWD/study conclusion, ItoG3; n=482 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=655 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 2, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 3, ItoG4; n=590 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 6, ItoG4; n=460 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 9, ItoG4; n=411 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 21, ItoG4; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWD/study conclusion, ItoG4; n=480 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Potassium at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=651 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time Points

Blood samples were collected for sodium evaluation. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of each AE severity. For sodium (high and low, respectively): G 1 (\>ULN to 150 mmol/L; \<LLN to 130 mmol/L), mild; G 2 (\>150 to 155 mmol/L; value not available), moderate; G 3 (\>155 to 160 mmol/L; \<130 to 120 mmol/L), severe; G 4 (\>160 mmol/L; \<120 mmol/L), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 1, AGI; n=549 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 2, AGI; n=537 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 3, AGI; n=595 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 6, AGI; n=477 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 9, AGI; n=414 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 12, AGI; n=311 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 15, AGI; n=223 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 18, AGI; n=171 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 21, AGI; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 24, AGI; n=111 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 30, AGI; n=92 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWD/study conclusion, AGI; n=4810 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWorst-case on-therapy, AGI; n=6528 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 2, ItoG3; n=531 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 3, ItoG3; n=590 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 9, ItoG3; n=411 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 21, ItoG3; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 30, ItoG3; n=91 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWD/study conclusion, ItoG3; n=482 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=654 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 1, ItoG4; n=541 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 2, ItoG4; n=530 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 3, ItoG4; n=590 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 21, ItoG4; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWD/study conclusion, ItoG4; n=480 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Sodium at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=651 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time Points

Blood samples were collected for the evaluation of total bilirubin. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For total bilirubin: G 1 (\>ULN to 1.5x ULN), mild; G 2 (\>1.5 to 3.0x ULN), moderate; G 3 (\>3.0 to 10.0x ULN), severe; G 4 (\>10.0x ULN), life threatening/disabling; G 5 (value not available), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 1, AGI; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 2, AGI; n=572 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 3, AGI; n=611 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 6, AGI; n=472 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 9, AGI; n=418 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 12, AGI; n=313 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 15, AGI; n=223 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 18, AGI; n=172 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 21, AGI; n=143 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 24, AGI; n=113 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 30, AGI; n=94 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 36, AGI; n=51 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 42, AGI; n=41 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 48, AGI; n=31 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 72, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 84, AGI; n=11 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWD/study conclusion, AGI; n=504 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWorst-case on-therapy, AGI; n=6513 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 2, ItoG3; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 60, ItoG3I; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWD/study conclusion, ItoG3; n=501 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=651 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 2, ItoG4; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWD/study conclusion, ItoG4; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Bilirubin at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time Points

Blood samples were collected for the evaluation of total neutrophils. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For neutrophils: G 1 (\<LLN to 1500/millimeters cubed \[mm\^3\] of blood plasma \[bp\]), mild; G 2 (\<1500 to 1000/mm\^3 of bp), moderate; G 3 (\<1000 to 500/mm\^3 of bp), severe; G 4 (\<500/mm\^3 of bp), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 78, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 84, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWithdrawal/study conclusion,, AGI; n=121 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWorst-case on-therapy, AGI; n=173 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 1, ItoG3; n=150 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 2, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 3, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 6, ItoG3; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 9, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 12, ItoG3; n=70 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 15, ItoG3; n=60 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 18, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 21, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 24, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 30, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 36, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 42, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 48, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 54, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 60, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 66, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 72, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 78, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 84, ItoG3; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWithdrawal/study conclusion, ItoG3; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 1, ItoG4; n=150 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 2, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 3, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 6, ItoG4; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 9, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 12, ItoG4; n=70 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 15, ItoG4; n=60 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 18, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 21, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 24, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 30, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 36, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 42, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 48, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 54, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 60, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 66, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 72, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 78, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 84, ItoG4; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWithdrawal/study conclusion, ItoG4; n=120 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 1, AGI; n=150 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 2, AGI; n=171 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 3, AGI; n=171 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 6, AGI; n=121 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 9, AGI; n=111 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 12, AGI; n=71 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 15, AGI; n=61 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 18, AGI; n=51 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 21, AGI; n=42 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 24, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 30, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 36, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 42, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 48, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 54, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 60, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 66, AGI; n=00 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for Total Neutrophils at the Indicated Time PointsWeek 72, AGI; n=00 participants
Secondary

Number of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time Points

Blood samples were collected for the evaluation of WBC count. Toxicity was measured in grades (AE severity) per NCI CTCAE, v3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For WBCs: G 1 (\<LLN to 3000/mm\^3 of blood plasma \[bp\]), mild; G 2 (\<3000 to 2000/mm\^3 of bp), moderate; G 3 (\<2000 to 1000/mm\^3 of bp), severe; G 4 (\<1000/mm\^3 of bp), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 1, AGI; n=625 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 2, AGI; n=649 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 3, AGI; n=626 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 6, AGI; n=475 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 9, AGI; n=413 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 12, AGI; n=307 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 15, AGI; n=224 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 18, AGI; n=173 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 21, AGI; n=133 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 24, AGI; n=111 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 30, AGI; n=93 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 36, AGI; n=52 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 42, AGI; n=42 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 48, AGI; n=31 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 54, AGI; n=31 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 60, AGI; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWithdrawal/study conclusion, AGI; n=512 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWorst-case on-therapy, AGI; n=6517 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 1, ItoG3; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 2, ItoG3; n=640 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 3, ItoG3; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 12, ItoG3; n=301 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 21, ItoG3; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWithdrawal/study conclusion, ItoG3; n=510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=651 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 1, ItoG4; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 2, ItoG4; n=640 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 3, ItoG4; n=620 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 12, ItoG4; n=300 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 21, ItoG4; n=130 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWithdrawal/study conclusion, ItoG4; n=510 participants
LapatinibNumber of Participants With Change From Baseline (Measured as AGI, ItoG3, and ItoG4) in Toxicity Grades for White Blood Cell (WBC) Count at the Indicated Time PointsWorst-case on-therapy, ItoG4; n=650 participants
Secondary

Number of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time Points

Toxicity was measured in grades (AE severity) per National Cancer Institute Common Toxicity Criteria for Adverse Event (NCI CTCAE) version (v) 3.0, displaying Grades (G) 1-5 with unique clinical descriptions of the severity of each AE. For albumin (per blood samples): G 1 (\<lower limit of normal \[LLN\] to 3 grams per deciliter \[g/dL\]), mild; G 2 (\<3 to 2 g/dL), moderate; G 3 (\<2 g/dL), severe; G 4 (value not available), life threatening/disabling; G 5 (death), death related to AE. Worst-case on-therapy reflects the most severe change at any time point measured post treatment.

Time frame: Baseline (Day 0); Weeks 1, 2, 3, 6, 9, 12, 15, 18, 21, 24, 30, 36, 42, 48, 54, 60, 66, 72, 78, and 84; withdrawal (WD)/study conclusion (up to approximately 87 weeks); and worst-case on-therapy

Population: Safety Population: all participants who entered the study and received at least one dose of lapatinib. Only those participants with data available at the specified time points were evaluated.

ArmMeasureGroupValue (NUMBER)
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 1, AGI; n=5410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 2, AGI; n=579 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 3, AGI; n=6110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 6, AGI; n=474 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 9, AGI; n=412 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 12, AGI; n=314 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 15, AGI; n=223 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 18, AGI; n=171 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 21, AGI; n=141 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 24, AGI; n=111 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 30, AGI; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 36, AGI; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 42, AGI; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 48, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 54, AGI; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 60, AGI; n=21 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 66, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 72, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 78, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 84, AGI; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWithdrawal /study conclusion, AGI; n=5011 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWorst-case on-therapy, AGI; n=6529 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 1, ItoG3; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 2, ItoG3; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 3, ItoG3; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 6, ItoG3; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 9, ItoG3; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 12, ItoG3; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 15, ItoG3; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 18, ItoG3; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 21, ItoG3; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 24, ItoG3; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 30, ItoG3; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 36, ItoG3; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 42, ItoG3; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 48, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 54, ItoG3; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 60, ItoG3; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 66, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 72, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 78, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 84, ItoG3; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWD/study conclusion, ItoG3; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWorst-case on-therapy, ItoG3; n=650 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 1, ItoG4; n=540 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 2, ItoG4; n=570 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 3, ItoG4; n=610 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 6, ItoG4; n=470 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 9, ItoG4; n=410 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 12, ItoG4; n=310 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 15, ItoG4; n=220 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 18, ItoG4; n=170 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 21, ItoG4; n=140 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 24, ItoG4; n=110 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 30, ItoG4; n=90 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 36, ItoG4; n=50 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 42, ItoG4; n=40 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 48, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 54, ItoG4; n=30 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 60, ItoG4; n=20 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 66, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 72, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 78, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWeek 84, ItoG4; n=10 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWD/study conclusion, ItoG4; n=500 participants
LapatinibNumber of Participants With Change From Baseline (Measured as Any Grade Increase [AGI], Increase to Grade 3 [ItoG3], and Increase to Grade 4 [ItoG4]) in Toxicity Grades for Albumin at the Indicated Time PointsWorst-case on-therapy ItoG4; n=650 participants
Secondary

Overall Survival (OS)

Overall survival is defined as the time from the initial treatment until death due to any cause. A death occurring during the study is defined as a death occurring during treatment or within 30 days of the last administration of study medication.

Time frame: From Baseline (Day 0) until death due to any cause evaluated at approximately 12 months (up to approximately 100 weeks)

Population: ITT Population. OS was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (MEDIAN)
LapatinibOverall Survival (OS)27.6 weeks
Secondary

PFS

PFS is defined as the time from the initial treatment until the first observation of disease progression or death due to any cause. The date of documented disease progression was defined as the earliest date of radiographic disease assessment progression or symptomatic progression, whichever came first. For participants who did not die/progress, survival was censored at the time of the last assessment (or contact).

Time frame: From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)

Population: ITT Population. PFS was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (MEDIAN)
LapatinibPFS14.3 weeks
Secondary

Time to Progression (All Deaths Are Treated as Competing Risk)

Time to progression is defined as the time from the initial treatment (first dose) until the first documented radiological symptomatic sign of disease progression. Time to progression data are presented as cumulative incidence estimate, which is defined as the time from the initial treatment until crude hazard probability of the occurrence of a particular event is reached to a particular point. All factors that hinder the observation of the event are defined as competing risks.

Time frame: From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)

Population: ITT Population. Time to progression was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (MEDIAN)
LapatinibTime to Progression (All Deaths Are Treated as Competing Risk)18.9 weeks
Secondary

Time to Progression (All Deaths Due to Non-PD Are Treated as Competing Risk)

Time to progression is defined as the time from the initial treatment (first dose) until the first documented radiological symptomatic sign of disease progression. Time to progression data are presented as cumulative incidence estimate, which is defined as the time from the initial treatment until crude hazard probability of occurrence of a particular event is reached to a particular point. All factors that hinder the observation of the event are defined as competing risks.

Time frame: From Baseline (Day 0) until disease progression or death due to any cause (up to approximately 85 weeks)

Population: ITT Population. Time to progression was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (MEDIAN)
LapatinibTime to Progression (All Deaths Due to Non-PD Are Treated as Competing Risk)14.3 weeks
Secondary

Time to Response

Time to response is defined as the time from the initial treatment until the first documented evidence of CR (disappearance of all TLs and non-TLs and the appearance of no new lesions) or PR (\>= a 30% decrease in the sum of the longest diameter of TLs, taking as reference the Baseline sum longest diameter) (whichever status was recorded first). Time to response data are presented as cumulative incidence estimate, which is defined as the time from the initial treatment until crude hazard probability of the occurrence of a particular event is reached to a particular point.

Time frame: Baseline (Day 0) until first documented evidence of response (up to approximately 60 weeks)

Population: ITT Population. Time to response was censored for participants who did not have an event before data cut off. The last available assessment prior to the data cut off was used for censored participants.

ArmMeasureValue (MEDIAN)
LapatinibTime to ResponseNA weeks

Source: ClinicalTrials.gov ยท Data processed: Mar 1, 2026