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Gemcitabine Plus Albumin-bound Paclitaxel In Patients With Advanced Metastatic Pancreatic Cancer

A Phase I Trial of Gemcitabine (Gemzar) Plus ABI-007 (ABRAXANE) In Patients With Advanced Metastatic Pancreatic Cancer

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00398086
Enrollment
67
Registered
2006-11-10
Start date
2006-11-01
Completion date
2010-12-01
Last updated
2019-11-22

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

Conditions

Metastatic Pancreatic Cancer

Keywords

Metastatic Pancreatic Cancer, Abraxane, Gemcitabine

Brief summary

To determine the maximum tolerated dose and dose-limiting toxicity of Gemcitabine plus Albumin-bound paclitaxel (ABI-007) in patients with advanced metastatic pancreatic cancer.

Detailed description

Albumin-bound paclitaxel is a novel, solvent-free, albumin-bound, 130 nanometer particle form of paclitaxel designed to avoid the problems associated with solvents used in Taxol(Abraxane prescribing information 2005). Albumin has a number of properties that make it an attractive molecule to combine with paclitaxel. Albumin is a natural transporter of endogenous hydrophobic molecules such as water-insoluble vitamins and hormones (Vorum 1999)and albumin binding to the gp-60 receptor (albondin) initiates the caveolae-mediated endothelial transport of protein-bound and unbound plasma constituents (John et al 2003, Minshall et al 2003, Tiruppathi et al 1997). This study consisted of a Phase 1 dose escalation phase, a Phase 2 treatment phase and a 24-month follow-up phase.

Interventions

DRUGGemcitabine

Administered by intravenous infusion over 30 minutes.

DRUGAlbumin-bound paclitaxel

Administered by intravenous infusion over 30 minutes.

Sponsors

Celgene
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Patient has histologically or cytologically confirmed metastatic adenocarcinoma of the pancreas. Patients with islet cell neoplasms are excluded. * Male or non-pregnant and non-lactating female, and age greater or equal to 18. * If a female patient is of child-bearing potential, as evidenced by regular menstrual periods, she must have a negative serum pregnancy test beta-human chorionic gonadotropin (B-hCG) documented within 72 hours of the first administration of study drug. * If sexually active, the patient must agree to use contraception considered adequate and appropriate by the investigator. * Patient must have received no prior therapy for the treatment of metastatic disease. Prior treatment with 5-fluorouracil (5-FU) or gemcitabine administered as a radiation sensitizer during and up to 4 weeks after radiation therapy is allowed. If a patient received gemcitabine in the adjuvant setting, tumor recurrence must have occurred at least 6 months after completing the last dose of gemcitabine. * Patient has the following blood counts at baseline * Absolute neutrophil count (ANC) equal or greater to 1.5 x 10\^9/L; * Platelets equal or greater to 100 x 10\^9/L * Hemoglobin equal or greater to 9 g/dL. * Patient has the following blood chemistry levels at baseline: * Aspartate aminotransferase (SGOT), Alanine aminotransferase (SGPT) equal or less than 2.5 x upper limit of normal range (ULN) is allowed * Bilirubin less than or equal to ULN * Serum creatinine within normal limits or calculated clearance equal or greater to 60 mL/min/1.73M\^2 patients with serum creatinine levels above the institutional normal value * Patient has no clinically significant abnormalities in urinalysis results * Patient has acceptable coagulation status as indicated by a prothrombin time (PT) within normal limits (plus or minus 15%) and partial thromboplastin time (PTT) within normal limits (plus or minus 15%). * Patient has a Karnofsky performance status (KPS) greater or equal to 70 (Eastern Cooperative Oncology Group \[ECOG\] PS 0-1). * Patient has one or more metastatic tumors measurable by computed tomography (CT) scan. * Patient has been informed about the nature of study, and has agreed to participate in the study, and signed the Informed Consent form prior to participation in any study-related activities.

Exclusion criteria

* Patient has known brain metastases unless previously treated and well controlled for at least 3 months (defined as stable clinically, no edema, no steroids and stable in two scans at least 4 weeks apart). * Patient uses therapeutic coumadin for a history of pulmonary emboli and deep vein thrombosis (DVT). * Patient has active, uncontrolled bacterial, viral, or fungal infection(s) requiring systemic therapy. * Patient has known infection with human immunodeficiency virus (HIV), hepatitis B, hepatitis C. * Patient has undergone major surgery, other than diagnostic surgery i.e.-- done to obtain a biopsy for diagnosis without removal of an organ), with 4 weeks prior to Day 1 of treatment in this study. * Patient received radiotherapy, surgery, chemotherapy, or an investigational therapy within 3 weeks prior to study entry weeks (6 weeks for nitrosureas or mitomycin C). * Patient has a history of allergy or hypersensitivity to the study drug. * Patient has serious medical risk factors involving any of the major organ systems such that the investigator considers it unsafe for the patient to receive an experimental research drug. * Patient is unwilling or unable to comply with study procedures. * Patient is enrolled in any other clinical protocol or investigational trial.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Dose-limiting ToxicitiesCycle 1 (Days 1-28)A dose-limiting toxicity (DLT) is defined as one or more of the following toxicities related to study drug during Cycle 1, according to the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events (CTCAE), Version 3: * Grade 4 neutropenia lasting \>3 days in the absence of growth factor support; * Grade 4 neutropenia associated with fever \>38.5°C; * Any other Grade 4 hematological toxicity; * Grade 3 thrombocytopenia with hemorrhage; * Grade 3 or 4 nausea, vomiting or diarrhea despite prophylaxis or treatment with an optimal anti-emetic or anti-diarrhea regimen; * Any other Grade 3 or higher non-hematological toxicity attributable to the study drug, excluding alopecia and fatigue.

Secondary

MeasureTime frameDescription
Percentage of Participants Who Achieved an Objective Confirmed Overall ResponseUp to approximately 4 yearsOverall Response is defined as the percent of participants who achieve an objective confirmed complete (CR) or partial response (PR). Response was determined according to Response Evaluation Criteria in Solid Tumors (RECIST) guidelines, assessed by an Independent Radiological Reviewer. CR: The disappearance of all known disease and no new sites or disease-related symptoms confirmed at least 4 weeks after initial documentation. All sites must be assessed, including non-measurable sites, such as effusions, or markers. PR: At least a 30% decrease in the sum of the longest diameters of target lesions, taking as a reference the baseline sum of the longest diameters confirmed at least 4 weeks after initial documentation and no new non-target lesions and/or unequivocal progression of existing non-target lesions. PR is also recorded when all measurable disease has completely disappeared, but a non-measurable component (i.e., ascites) is still present but not progressing.
Percentage of Participants With Disease ControlUp to approximately 4 yearsDisease control is defined as participants with Stable Disease for at least 16 weeks, or confirmed complete or partial overall response, based on RECIST guidelines and assessed by an Independent Radiological Reviewer. Stable disease is defined as neither sufficient shrinkage to qualify for partial response nor sufficient increase to qualify for Progressive Disease, and no new non-target lesions or unequivocal progression of existing non-target lesions. Progressive Disease is defined as at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion.
Progression-free SurvivalUp to approximately 4 yearsProgression-free survival is defined as the time from first dose of study drug to the start of disease progression or patient death, whichever occurs first, assessed by an Independent Radiological Reviewer. Participants who do not have disease progression or have not died were censored at the last known time that the participant was progression free. Progression-free survival was summarized using Kaplan-Meier methods. Progressive Disease is defined as at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion.
Number of Participants With Adverse Events (AE)Up to 25 monthsAn AE was any untoward medical occurrence, not necessarily having a causal relationship with the patient's treatment, that began or worsened in grade after the start of study drug through 30 days after the last dose. A serious AE (SAE) is any untoward medical occurrence that is fatal, life-threatening, results in persistent or significant disability or incapacity, requires or prolongs existing in-patient hospitalization, is a congenital anomaly/birth defect, or is a condition that may jeopardize the patient or may require intervention to prevent one of the outcomes listed above. Treatment-related AEs (TRAEs) include those assessed by the Investigator as possibly, probably, or definitely related to study treatment. Severity was graded according to the NCI CTCAE based on the following: Grade 1- Mild; Grade 2 -Moderate; Grade 3 - Severe; Grade 4 - Life-threatening or disabling; Grade 5 - Death related to AE.
Overall SurvivalUp to approximately 4 yearsOverall survival was defined as the time from the date of first dose of study drug to the date of patient death from all causes. Participants who did not die were censored at the last known time the patient was alive. Patient survival was summarized using Kaplan-Meier methods.
Maximal Degree of MyelosuppressionDuring the treatment phase, up to a maximum of 24 months.The maximal degree of myelosuppression was assessed by the overall nadir of absolute neutrophil count (ANC), white blood cell count and platelet count based on clinical laboratory measurements.
Maximal Degree of AnemiaDuring the treatment phase, up to a maximum of 24 months.The maximal degree of anemia (and myelosuppression) was assessed by the overall (any time after first dose of study drug) nadir of hemoglobin levels based on clinical laboratory measurements.
Duration of ResponseUp to approximately 4 yearsDuration of response was assessed by progression-free survival for participants who achieved a confirmed Complete Response or Partial Response, assessed by an Independent Radiological Reviewer.

Countries

United States

Participant flow

Recruitment details

Enrollment was initiated in November 2006 and completed in September 2008. Sixty-seven patients were enrolled at four sites in the US.

Pre-assignment details

In Phase 1, patients were assigned sequentially to one of the three potential dose levels based on the dose cohort currently enrolling patients (a total of 30 patients). After the maximum tolerated dose (MTD) was determined, all subsequent patients were enrolled at that dose level in Phase 2 (37 patients).

Participants by arm

ArmCount
100 mg/m^2
Participants received albumin-bound paclitaxel 100 mg/m\^2 followed by gemcitabine 1000 mg/m\^2 by intravenous infusion (IV) on Days 1, 8 and 15 of each 28 day cycle (dose level one). Treatment continued until progressive disease or unacceptable toxicity.
20
125 mg/m^2
Participants received albumin-bound paclitaxel 125 mg/m\^2 followed by gemcitabine 1000 mg/m\^2 by intravenous infusion (IV) on Days 1, 8 and 15 of each 28 day cycle (dose level two). Treatment continued until progressive disease or unacceptable toxicity.
44
150 mg/m^2
Participants received albumin-bound paclitaxel 150 mg/m\^2 followed by gemcitabine 1000 mg/m\^2 by intravenous infusion (IV) on Days 1, 8 and 15 of each 28 day cycle (dose level three). Treatment continued until progressive disease or unacceptable toxicity.
3
Total67

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event140
Overall StudyPhysician Decision140
Overall StudyUnacceptable Toxicity282
Overall StudyWithdrawal by Subject570

Baseline characteristics

CharacteristicTotal100 mg/m^2125 mg/m^2150 mg/m^2
Age, Continuous62.0 years62.0 years61.5 years69.0 years
Current Site(s) of Metastasis/Relapse
Abdomen/Peritoneum
54 participants16 participants37 participants1 participants
Current Site(s) of Metastasis/Relapse
Axilla
2 participants2 participants0 participants0 participants
Current Site(s) of Metastasis/Relapse
Bone
4 participants1 participants3 participants0 participants
Current Site(s) of Metastasis/Relapse
Liver
46 participants11 participants33 participants2 participants
Current Site(s) of Metastasis/Relapse
Lung/Thoracic
24 participants5 participants18 participants1 participants
Current Site(s) of Metastasis/Relapse
Other
14 participants8 participants6 participants0 participants
Current Site(s) of Metastasis/Relapse
Pelvis
5 participants1 participants3 participants1 participants
Current Site(s) of Metastasis/Relapse
Skin/Soft Tissue
1 participants0 participants1 participants0 participants
Current Site(s) of Metastasis/Relapse
Supraclavicular Nodes
2 participants0 participants2 participants0 participants
Dominant Current Site of Metastasis/Relapse
Non-visceral
1 participants1 participants0 participants0 participants
Dominant Current Site of Metastasis/Relapse
Visceral
66 participants19 participants44 participants3 participants
Eastern Cooperative Oncology Group (ECOG) Performance Status
0 (Fully Active)
33 participants9 participants22 participants2 participants
Eastern Cooperative Oncology Group (ECOG) Performance Status
1 (Restrictive but Ambulatory)
34 participants11 participants22 participants1 participants
Histology of Primary Diagnosis: Adenocarcinoma67 participants20 participants44 participants3 participants
Race/Ethnicity, Customized
Asian
2 participants1 participants1 participants0 participants
Race/Ethnicity, Customized
Black, of African Heritage
2 participants0 participants2 participants0 participants
Race/Ethnicity, Customized
Other
1 participants1 participants0 participants0 participants
Race/Ethnicity, Customized
White, Hispanic, or Latino
8 participants2 participants4 participants2 participants
Race/Ethnicity, Customized
White, Non-Hispanic, and Non-Latino
54 participants16 participants37 participants1 participants
Region of Enrollment
United States
67 participants20 participants44 participants3 participants
Sex: Female, Male
Female
35 Participants9 Participants25 Participants1 Participants
Sex: Female, Male
Male
32 Participants11 Participants19 Participants2 Participants
Time from First Documented Metastasis/Relapse to Study Entry0.7 months0.8 months0.7 months0.3 months

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —
other
Total, other adverse events
20 / 2044 / 443 / 3
serious
Total, serious adverse events
10 / 2024 / 441 / 3

Outcome results

Primary

Number of Participants With Dose-limiting Toxicities

A dose-limiting toxicity (DLT) is defined as one or more of the following toxicities related to study drug during Cycle 1, according to the National Cancer Institute (NCI) Common Toxicity Criteria for Adverse Events (CTCAE), Version 3: * Grade 4 neutropenia lasting \>3 days in the absence of growth factor support; * Grade 4 neutropenia associated with fever \>38.5°C; * Any other Grade 4 hematological toxicity; * Grade 3 thrombocytopenia with hemorrhage; * Grade 3 or 4 nausea, vomiting or diarrhea despite prophylaxis or treatment with an optimal anti-emetic or anti-diarrhea regimen; * Any other Grade 3 or higher non-hematological toxicity attributable to the study drug, excluding alopecia and fatigue.

Time frame: Cycle 1 (Days 1-28)

Population: Phase 1 treated population

ArmMeasureValue (NUMBER)
100 mg/m^2Number of Participants With Dose-limiting Toxicities4 participants
125 mg/m^2Number of Participants With Dose-limiting Toxicities0 participants
150 mg/m^2Number of Participants With Dose-limiting Toxicities1 participants
Secondary

Duration of Response

Duration of response was assessed by progression-free survival for participants who achieved a confirmed Complete Response or Partial Response, assessed by an Independent Radiological Reviewer.

Time frame: Up to approximately 4 years

Population: Treated patients with an overall confirmed Complete Response or Partial Response.

ArmMeasureValue (MEDIAN)
100 mg/m^2Duration of ResponseNA months
125 mg/m^2Duration of Response7.3 months
Secondary

Maximal Degree of Anemia

The maximal degree of anemia (and myelosuppression) was assessed by the overall (any time after first dose of study drug) nadir of hemoglobin levels based on clinical laboratory measurements.

Time frame: During the treatment phase, up to a maximum of 24 months.

Population: Treated patients with available data

ArmMeasureValue (MEAN)Dispersion
100 mg/m^2Maximal Degree of Anemia95.1 g/LStandard Deviation 12.85
125 mg/m^2Maximal Degree of Anemia91.8 g/LStandard Deviation 10.43
150 mg/m^2Maximal Degree of Anemia95.3 g/LStandard Deviation 15.37
Secondary

Maximal Degree of Myelosuppression

The maximal degree of myelosuppression was assessed by the overall nadir of absolute neutrophil count (ANC), white blood cell count and platelet count based on clinical laboratory measurements.

Time frame: During the treatment phase, up to a maximum of 24 months.

Population: Treated patients with available data

ArmMeasureGroupValue (MEAN)Dispersion
100 mg/m^2Maximal Degree of MyelosuppressionPlatelet count120.3 x10^9/LStandard Deviation 79.02
100 mg/m^2Maximal Degree of MyelosuppressionWhite blood cell count2.69 x10^9/LStandard Deviation 1.734
100 mg/m^2Maximal Degree of MyelosuppressionAbsolute neutrophil count1.38 x10^9/LStandard Deviation 1.541
125 mg/m^2Maximal Degree of MyelosuppressionAbsolute neutrophil count0.96 x10^9/LStandard Deviation 1.446
125 mg/m^2Maximal Degree of MyelosuppressionPlatelet count88.3 x10^9/LStandard Deviation 62.1
125 mg/m^2Maximal Degree of MyelosuppressionWhite blood cell count2.18 x10^9/LStandard Deviation 1.849
150 mg/m^2Maximal Degree of MyelosuppressionPlatelet count58.7 x10^9/LStandard Deviation 48.64
150 mg/m^2Maximal Degree of MyelosuppressionAbsolute neutrophil count0.47 x10^9/LStandard Deviation 0.46
150 mg/m^2Maximal Degree of MyelosuppressionWhite blood cell count1.52 x10^9/LStandard Deviation 1.484
Secondary

Number of Participants With Adverse Events (AE)

An AE was any untoward medical occurrence, not necessarily having a causal relationship with the patient's treatment, that began or worsened in grade after the start of study drug through 30 days after the last dose. A serious AE (SAE) is any untoward medical occurrence that is fatal, life-threatening, results in persistent or significant disability or incapacity, requires or prolongs existing in-patient hospitalization, is a congenital anomaly/birth defect, or is a condition that may jeopardize the patient or may require intervention to prevent one of the outcomes listed above. Treatment-related AEs (TRAEs) include those assessed by the Investigator as possibly, probably, or definitely related to study treatment. Severity was graded according to the NCI CTCAE based on the following: Grade 1- Mild; Grade 2 -Moderate; Grade 3 - Severe; Grade 4 - Life-threatening or disabling; Grade 5 - Death related to AE.

Time frame: Up to 25 months

Population: Treated patients: all enrolled patients who received at least one dose of study drug.

ArmMeasureGroupValue (NUMBER)
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 grade 3 or higher AE15 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 dose interruption due to AE1 participants
100 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 treatment-related SAE4 participants
100 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 AE20 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 dose reduction due to TRAE4 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 AE and drug permanently discontinued3 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related dose delay due to AE13 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 TRAE and drug permanently discontinued2 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related AE18 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-emergent dose delay due to AE14 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related grade 3 to 5 AE11 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 AE resulting in death0 participants
100 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related AE dose interruption1 participants
100 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 SAE10 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related AE dose interruption0 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 TRAE and drug permanently discontinued8 participants
125 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 AE44 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 grade 3 or higher AE42 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related grade 3 to 5 AE38 participants
125 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 SAE24 participants
125 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 treatment-related SAE12 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 AE and drug permanently discontinued12 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 dose reduction due to TRAE10 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 dose interruption due to AE0 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related AE42 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-emergent dose delay due to AE27 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related dose delay due to AE27 participants
125 mg/m^2Number of Participants With Adverse Events (AE)At least 1 AE resulting in death1 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 AE resulting in death1 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 dose interruption due to AE0 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related grade 3 to 5 AE3 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related dose delay due to AE3 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related AE dose interruption0 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-related AE3 participants
150 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 AE3 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 treatment-emergent dose delay due to AE3 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 AE and drug permanently discontinued2 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 TRAE and drug permanently discontinued2 participants
150 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 treatment-related SAE1 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 grade 3 or higher AE3 participants
150 mg/m^2Number of Participants With Adverse Events (AE)At least 1 dose reduction due to TRAE1 participants
150 mg/m^2Number of Participants With Adverse Events (AE)Patients with at least 1 SAE1 participants
Secondary

Overall Survival

Overall survival was defined as the time from the date of first dose of study drug to the date of patient death from all causes. Participants who did not die were censored at the last known time the patient was alive. Patient survival was summarized using Kaplan-Meier methods.

Time frame: Up to approximately 4 years

Population: Treated patients

ArmMeasureValue (MEDIAN)
100 mg/m^2Overall Survival9.3 months
125 mg/m^2Overall Survival12.2 months
150 mg/m^2Overall Survival6.1 months
Secondary

Percentage of Participants Who Achieved an Objective Confirmed Overall Response

Overall Response is defined as the percent of participants who achieve an objective confirmed complete (CR) or partial response (PR). Response was determined according to Response Evaluation Criteria in Solid Tumors (RECIST) guidelines, assessed by an Independent Radiological Reviewer. CR: The disappearance of all known disease and no new sites or disease-related symptoms confirmed at least 4 weeks after initial documentation. All sites must be assessed, including non-measurable sites, such as effusions, or markers. PR: At least a 30% decrease in the sum of the longest diameters of target lesions, taking as a reference the baseline sum of the longest diameters confirmed at least 4 weeks after initial documentation and no new non-target lesions and/or unequivocal progression of existing non-target lesions. PR is also recorded when all measurable disease has completely disappeared, but a non-measurable component (i.e., ascites) is still present but not progressing.

Time frame: Up to approximately 4 years

Population: Treated patients

ArmMeasureValue (NUMBER)
100 mg/m^2Percentage of Participants Who Achieved an Objective Confirmed Overall Response25 percentage of participants
125 mg/m^2Percentage of Participants Who Achieved an Objective Confirmed Overall Response39 percentage of participants
150 mg/m^2Percentage of Participants Who Achieved an Objective Confirmed Overall Response0 percentage of participants
Secondary

Percentage of Participants With Disease Control

Disease control is defined as participants with Stable Disease for at least 16 weeks, or confirmed complete or partial overall response, based on RECIST guidelines and assessed by an Independent Radiological Reviewer. Stable disease is defined as neither sufficient shrinkage to qualify for partial response nor sufficient increase to qualify for Progressive Disease, and no new non-target lesions or unequivocal progression of existing non-target lesions. Progressive Disease is defined as at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion.

Time frame: Up to approximately 4 years

Population: Treated patients

ArmMeasureValue (NUMBER)
100 mg/m^2Percentage of Participants With Disease Control55 percentage of participants
125 mg/m^2Percentage of Participants With Disease Control55 percentage of participants
150 mg/m^2Percentage of Participants With Disease Control33 percentage of participants
Secondary

Progression-free Survival

Progression-free survival is defined as the time from first dose of study drug to the start of disease progression or patient death, whichever occurs first, assessed by an Independent Radiological Reviewer. Participants who do not have disease progression or have not died were censored at the last known time that the participant was progression free. Progression-free survival was summarized using Kaplan-Meier methods. Progressive Disease is defined as at least a 20% increase in the sum of the longest diameters of target lesions, taking as reference the smallest sum of the longest diameters recorded since the treatment started; or the appearance of one or more new lesions; or the unequivocal progression of a non-target lesion.

Time frame: Up to approximately 4 years

Population: Treated patients

ArmMeasureValue (MEDIAN)
100 mg/m^2Progression-free Survival6.1 months
125 mg/m^2Progression-free Survival6.9 months
150 mg/m^2Progression-free Survival1.6 months

Source: ClinicalTrials.gov · Data processed: Feb 26, 2026