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Open-Label Extension and Safety Study of Talazoparib

A SINGLE-ARM, OPEN-LABEL, MULTICENTER, EXTENDED TREATMENT, SAFETY STUDY IN PATIENTS TREATED WITH TALAZOPARIB

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02921919
Enrollment
120
Registered
2016-10-03
Start date
2016-11-08
Completion date
2021-07-20
Last updated
2022-08-24

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

Conditions

Cancer

Brief summary

This is a single-arm, open-label, extended treatment, safety study in patients treated with talazoparib in qualifying studies.

Interventions

DRUGTalazoparib

Maximum starting dose: 1mg/day or last tolerated dose in the originating protocol

Sponsors

Medivation, Inc.
CollaboratorINDUSTRY
Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Eastern Cooperative Oncology Group (ECOG) performance status ≤ 2. * Female patients of childbearing potential must have a negative pregnancy test before the first dose of talazoparib and must agree to use a highly effective birth control method from the time of the first dose of talazoparib through 45 days after the last dose. * Male patients must use a condom when having sex with a pregnant woman or with a woman of childbearing potential from the time of the first dose of talazoparib through 105 days after the last dose. Contraception should be considered for a nonpregnant female partner of childbearing potential. * Female patients may not be breastfeeding at the first dose of talazoparib and must not breastfeed during study participation through 45 days after the last dose of talazoparib.

Exclusion criteria

* Permanently discontinued from any Medivation sponsored study with talazoparib alone or in combination with another agent. * Received an antineoplastic therapy or investigational agent after treatment with talazoparib in the originating protocol. * Has a clinically significant cardiovascular, dermatologic, endocrine, gastrointestinal, hematologic, infectious, metabolic, neurologic, psychologic, or pulmonary disorder or any other condition, including excessive alcohol or drug abuse, or secondary malignancy, that may interfere with study participation in the opinion of the investigator. * Diagnosis of myelodysplastic syndrome (MDS).

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsFrom start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)An adverse event (AE) was any untoward medical occurrence in a participant administered a study drug without regard to possibility of a causal relationship. SAE was any untoward medical occurrence that at any dose resulted in death; inpatient hospitalization or prolongation of existing hospitalization; was life-threatening (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect or was considered as an important medical event. TEAEs were AEs that occurred on or after the administration of first dose of study drug through approximately 30 days after the last dose. AE included both SAEs and all non-SAEs. Treatment-related TEAEs were defined as any TEAE with at least a possible relationship to the study drug as assessed by the investigator or that was missing the assessment of causal relationship whose relationship to the study drug could not be ruled out.
Number of Participants With Grade 3 or 4 TEAEs Based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Version 4From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)An AE was any untoward medical occurrence in a participant administered a study drug without regard to possibility of a causal relationship. TEAEs were AEs that occurred on or after the administration of first dose of study drug through approximately 30 days after the last dose. Severity was graded using NCI-CTCAE version 4 where, Grade 1: mild AE; Grade 2: moderate AE; Grade 3: severe AE; Grade 4: life-threatening consequences, urgent intervention indicated; Grade 5: death related to AE. Number of participants with Grade 3 or 4 TEAEs were reported.
Number of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathFrom start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)An AE was any untoward medical occurrence in a participant administered a study drug without regard to possibility of a causal relationship. TEAEs were AEs that occurred on or after the administration of first dose of study drug through approximately 30 days after the last dose. Number of participants with TEAEs leading to dose reduction, permanent study drug discontinuation and death were reported.
Number of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsFrom start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)The following liver parameters were analyzed: aspartate transaminase (AST), alanine aminotransferase (ALT), total bilirubin (TBL) and alkaline phosphatase (ALP). The criteria for clinically significant abnormalities for liver parameters included AST or ALT greater than or equal to (\>=) 3 times upper limit of normal (ULN); ALT or AST greater than (\>) 5 times ULN; ALT or AST \> 10 times ULN; ALT or AST \> 20 times ULN; total TBL \>2 times ULN; ALT or AST \>= 3 times ULN and TBL \> 2 times ULN and ALT or AST \>= 3 times ULN and TBL \> 2 times ULN and ALP \< 2 times ULN.
Number of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersFrom start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)The following hematology parameters were analyzed: hemoglobin, leukocytes, lymphocytes, neutrophils and platelets. Laboratory toxicities were graded using NCI-CTCAE version 4 where, grade 1 (mild), grade 2 (moderate), grade 3 (severe), grade 4 (potentially life threatening) and grade 5 (death) for each parameter. Number of participants with Grade 3 and 4 toxicities were reported. Low indicates values lower than the normal range.
Number of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersFrom start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)The following chemistry parameters were analyzed: alkaline phosphatase, bilirubin and creatinine. Laboratory toxicities were graded using NCI-CTCAE version 4 where, grade 1 (mild), grade 2 (moderate), grade 3 (severe), grade 4 (potentially life threatening) and grade 5 (death) for each parameter. Number of participants with Grade 3 or 4 toxicities were reported. High indicates values higher than the normal range.
Number of Participants With Clinically Significant Changes in Vital Signs and WeightFrom start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)Criteria for clinically significant changes in vital signs included a) Systolic blood pressure (SBP): 1) absolute results \>180 millimeter of mercury (mmHg) and increase from baseline \>=40 mmHg, 2) absolute results \<90 mmHg and decrease from baseline \>30 mmHg; b) Diastolic blood pressure (DBP): 1) absolute results \>110 mmHg and increase from baseline \>=30 mmHg , 2) absolute results \<50 mmHg and decrease from baseline \>20 mmHg , 3) increase from baseline \>=20 mmHg; c) Heart rate: 1) absolute results \>120 beats per minute (bpm) and increase from baseline \>30 bpm, 2) absolute results \<50 bpm and \>20 bpm decrease from baseline; d) Temperature: \<=34.5 or \>=38 degree Celsius. Criteria for clinically significant changes in weight: \>10 percent (%) decrease from baseline.

Countries

Canada, France, Germany, Hungary, Moldova, Poland, Russia, United Kingdom, United States

Participant flow

Recruitment details

Eligible participants who received talazoparib as a single agent or in combination with another agent in following qualifying studies: PRP-001(NCT01286987), MDV3800-01(NCT02997163), MDV3800-02(NCT02997176), MDV3800-03(NCT03070548), MDV3800-04(NCT03077607), MDV3800-14(NCT03042910) continued therapy with talazoparib as single agent in this extended treatment study.

Pre-assignment details

A total of 120 participants were enrolled in the study of which 118 participants received the study treatment and 2 participants did not receive any study treatment as they were withdrawn before treatment initiation. Hence those 2 participants were not reported under any reporting arms.

Participants by arm

ArmCount
Initial Dose Talazoparib: < 1 mg/Day
Participants were administered talazoparib capsules at an initial dose (i.e. the last tolerated dose in the originating study) of \< 1 mg orally once daily. Participants received talazoparib till the investigator considered treatment to be providing clinical benefit or until other study discontinuation criteria were met. Participants were followed-up for safety until 30 days after the last dose of talazoparib (i.e., permanent discontinuation) or before initiation of a new antineoplastic therapy, whichever occurred first.
66
Initial Dose Talazoparib: 1 mg/Day
Participants were administered talazoparib capsules at an initial dose (i.e. the last tolerated dose in the originating study) of 1 mg orally once daily. Participants received talazoparib till the investigator considered treatment to be providing clinical benefit or until other study discontinuation criteria were met. Participants were followed-up for safety until 30 days after the last dose of talazoparib (i.e., permanent discontinuation) or before initiation of a new antineoplastic therapy, whichever occurred first.
52
Total118

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event64
Overall StudyDisease Progression4738
Overall StudyLost to Follow-up01
Overall StudyOther56
Overall StudyPhysician Decision32
Overall StudyWithdrawal by Subject51

Baseline characteristics

CharacteristicInitial Dose Talazoparib: < 1 mg/DayInitial Dose Talazoparib: 1 mg/DayTotal
Age, Customized
50 to <65 years
30 Participants17 Participants47 Participants
Age, Customized
< 50 years
10 Participants9 Participants19 Participants
Age, Customized
>= 65 years
25 Participants25 Participants50 Participants
Age, Customized
Missing
1 Participants1 Participants2 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants5 Participants11 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
56 Participants45 Participants101 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
4 Participants2 Participants6 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
3 Participants0 Participants3 Participants
Race (NIH/OMB)
Black or African American
1 Participants2 Participants3 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants2 Participants5 Participants
Race (NIH/OMB)
White
59 Participants48 Participants107 Participants
Sex: Female, Male
Female
46 Participants37 Participants83 Participants
Sex: Female, Male
Male
20 Participants15 Participants35 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
7 / 668 / 52
other
Total, other adverse events
54 / 6646 / 52
serious
Total, serious adverse events
27 / 6618 / 52

Outcome results

Primary

Number of Participants With Clinically Significant Changes in Vital Signs and Weight

Criteria for clinically significant changes in vital signs included a) Systolic blood pressure (SBP): 1) absolute results \>180 millimeter of mercury (mmHg) and increase from baseline \>=40 mmHg, 2) absolute results \<90 mmHg and decrease from baseline \>30 mmHg; b) Diastolic blood pressure (DBP): 1) absolute results \>110 mmHg and increase from baseline \>=30 mmHg , 2) absolute results \<50 mmHg and decrease from baseline \>20 mmHg , 3) increase from baseline \>=20 mmHg; c) Heart rate: 1) absolute results \>120 beats per minute (bpm) and increase from baseline \>30 bpm, 2) absolute results \<50 bpm and \>20 bpm decrease from baseline; d) Temperature: \<=34.5 or \>=38 degree Celsius. Criteria for clinically significant changes in weight: \>10 percent (%) decrease from baseline.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightSBP: absolute results <90 mmHg and decrease from baseline >30 mmHg1 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightHeart rate: absolute results >120 bpm and increase from baseline >30 bpm2 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightDBP: absolute results <50 mmHg and decrease from baseline >20 mmHg0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightHeart rate: absolute results <50 bpm and decrease from baseline >20 bpm0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightDBP: absolute results >110 mmHg and increase from baseline >=30 mmHg0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightTemperature: <=34.5 or >=38 degree Celsius0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightDBP: increase from baseline >=20 mmHg6 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightWeight: >10% decrease from baseline7 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightSBP: absolute results >180 mmHg and increase from baseline >=40 mmHg1 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightWeight: >10% decrease from baseline2 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightSBP: absolute results >180 mmHg and increase from baseline >=40 mmHg0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightSBP: absolute results <90 mmHg and decrease from baseline >30 mmHg0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightDBP: absolute results >110 mmHg and increase from baseline >=30 mmHg0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightDBP: absolute results <50 mmHg and decrease from baseline >20 mmHg0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightDBP: increase from baseline >=20 mmHg5 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightHeart rate: absolute results >120 bpm and increase from baseline >30 bpm0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightHeart rate: absolute results <50 bpm and decrease from baseline >20 bpm0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Changes in Vital Signs and WeightTemperature: <=34.5 or >=38 degree Celsius0 Participants
Primary

Number of Participants With Clinically Significant Laboratory Abnormalities: Liver Function Tests

The following liver parameters were analyzed: aspartate transaminase (AST), alanine aminotransferase (ALT), total bilirubin (TBL) and alkaline phosphatase (ALP). The criteria for clinically significant abnormalities for liver parameters included AST or ALT greater than or equal to (\>=) 3 times upper limit of normal (ULN); ALT or AST greater than (\>) 5 times ULN; ALT or AST \> 10 times ULN; ALT or AST \> 20 times ULN; total TBL \>2 times ULN; ALT or AST \>= 3 times ULN and TBL \> 2 times ULN and ALT or AST \>= 3 times ULN and TBL \> 2 times ULN and ALP \< 2 times ULN.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib. Here, overall number of participants analyzed signifies number of participants who were evaluable for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST > 10*ULN0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsTBL > 2*ULN4 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST > 5*ULN0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST >= 3*ULN and TBL > 2*ULN (any visit date)2 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST > 20*ULN0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST >= 3*ULN and TBL > 2*ULN and ALP < 2*ULN (any visit date)0 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST >= 3*ULN5 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST >= 3*ULN and TBL > 2*ULN and ALP < 2*ULN (any visit date)0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST >= 3*ULN2 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST > 5*ULN0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST > 10*ULN0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST > 20*ULN0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsTBL > 2*ULN0 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Clinically Significant Laboratory Abnormalities: Liver Function TestsALT or AST >= 3*ULN and TBL > 2*ULN (any visit date)0 Participants
Primary

Number of Participants With Grade 3 or 4 TEAEs Based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Version 4

An AE was any untoward medical occurrence in a participant administered a study drug without regard to possibility of a causal relationship. TEAEs were AEs that occurred on or after the administration of first dose of study drug through approximately 30 days after the last dose. Severity was graded using NCI-CTCAE version 4 where, Grade 1: mild AE; Grade 2: moderate AE; Grade 3: severe AE; Grade 4: life-threatening consequences, urgent intervention indicated; Grade 5: death related to AE. Number of participants with Grade 3 or 4 TEAEs were reported.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Grade 3 or 4 TEAEs Based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Version 438 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Grade 3 or 4 TEAEs Based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) Version 432 Participants
Primary

Number of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry Parameters

The following chemistry parameters were analyzed: alkaline phosphatase, bilirubin and creatinine. Laboratory toxicities were graded using NCI-CTCAE version 4 where, grade 1 (mild), grade 2 (moderate), grade 3 (severe), grade 4 (potentially life threatening) and grade 5 (death) for each parameter. Number of participants with Grade 3 or 4 toxicities were reported. High indicates values higher than the normal range.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersAlkaline Phosphatase (high): Grade 35 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersAlkaline Phosphatase (high): Grade 41 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersBilirubin (high): Grade 33 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersBilirubin (high): Grade 41 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersCreatinine (high): Grade 31 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersCreatinine (high): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersCreatinine (high): Grade 30 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersAlkaline Phosphatase (high): Grade 31 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersBilirubin (high): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersAlkaline Phosphatase (high): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersCreatinine (high): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Chemistry ParametersBilirubin (high): Grade 30 Participants
Primary

Number of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology Parameters

The following hematology parameters were analyzed: hemoglobin, leukocytes, lymphocytes, neutrophils and platelets. Laboratory toxicities were graded using NCI-CTCAE version 4 where, grade 1 (mild), grade 2 (moderate), grade 3 (severe), grade 4 (potentially life threatening) and grade 5 (death) for each parameter. Number of participants with Grade 3 and 4 toxicities were reported. Low indicates values lower than the normal range.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLeukocytes (low): Grade 40 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersNeutrophils (low): Grade 39 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLeukocytes (low): Grade 35 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersNeutrophils (low): Grade 41 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLymphocytes (low): Grade 311 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersPlatelets (low): Grade 34 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersHemoglobin (low): Grade 40 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersPlatelets (low): Grade 41 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLymphocytes (low): Grade 41 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersHemoglobin (low): Grade 37 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersHemoglobin (low): Grade 316 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersHemoglobin (low): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLeukocytes (low): Grade 32 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLeukocytes (low): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLymphocytes (low): Grade 38 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersLymphocytes (low): Grade 41 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersNeutrophils (low): Grade 34 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersNeutrophils (low): Grade 40 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersPlatelets (low): Grade 34 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With NCI-CTCAE Grade 3/4 Postbaseline Laboratory Toxicities: Hematology ParametersPlatelets (low): Grade 41 Participants
Primary

Number of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and Death

An AE was any untoward medical occurrence in a participant administered a study drug without regard to possibility of a causal relationship. TEAEs were AEs that occurred on or after the administration of first dose of study drug through approximately 30 days after the last dose. Number of participants with TEAEs leading to dose reduction, permanent study drug discontinuation and death were reported.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathTEAE leading to dose reduction6 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathTEAE leading to permanent study drug discontinuation5 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathTEAE leading to death7 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathTEAE leading to dose reduction7 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathTEAE leading to permanent study drug discontinuation4 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With TEAEs Leading to Dose Reduction, Permanent Study Drug Discontinuation and DeathTEAE leading to death7 Participants
Primary

Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEs

An adverse event (AE) was any untoward medical occurrence in a participant administered a study drug without regard to possibility of a causal relationship. SAE was any untoward medical occurrence that at any dose resulted in death; inpatient hospitalization or prolongation of existing hospitalization; was life-threatening (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect or was considered as an important medical event. TEAEs were AEs that occurred on or after the administration of first dose of study drug through approximately 30 days after the last dose. AE included both SAEs and all non-SAEs. Treatment-related TEAEs were defined as any TEAE with at least a possible relationship to the study drug as assessed by the investigator or that was missing the assessment of causal relationship whose relationship to the study drug could not be ruled out.

Time frame: From start of study treatment up to 30 days after last dose of study treatment or before initiation of a new antineoplastic therapy, whichever occurred first (approximately maximum for 4.6 years)

Population: Safety population included all participants who received any amount of talazoparib.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsTEAE63 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsSAE27 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsTreatment-related TEAEs45 Participants
Initial Dose Talazoparib: < 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsTreatment-related SAEs6 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsTreatment-related SAEs3 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsTEAE47 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsTreatment-related TEAEs31 Participants
Initial Dose Talazoparib: 1 mg/DayNumber of Participants With Treatment-Emergent Adverse Events (TEAEs), Treatment Emergent Serious Adverse Events (SAEs), Treatment Emergent Treatment Related AEs and Treatment Emergent Treatment Related SAEsSAE18 Participants

Source: ClinicalTrials.gov · Data processed: Feb 23, 2026