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An Open-Label Pharmacokinetics and Safety Study of Talazoparib (MDV3800)

A PHASE I OPEN-LABEL PHARMACOKINETICS AND SAFETY STUDY OF TALAZOPARIB (MDV3800) IN PATIENTS WITH ADVANCED SOLID TUMORS AND NORMAL OR VARYING DEGREES OF HEPATIC IMPAIRMENT

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02997176
Enrollment
38
Registered
2016-12-19
Start date
2016-09-30
Completion date
2020-02-12
Last updated
2021-02-25

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

Conditions

Advanced Solid Tumors

Brief summary

This is a trial to investigate the pharmacokinetics (PK) and the safety of talazoparib in patients with advanced solid tumors and impaired hepatic function.

Detailed description

At the end of the study, patients with no clinically significant toxicities, no contraindications to continue treatment with talazoparib, and no disease progression (underlying cancer progression) may be eligible to continue talazoparib treatment in a separate open-label extension study. The decision to allow the patient to continue dosing with talazoparib in an open-label extension (OLE) study will be based on potential overall benefit-risk and patient meeting eligibility criteria for OLE.

Interventions

DRUGTalazoparib

Daily oral doses of talazoparib 0.5 mg

Sponsors

Medivation, Inc.
CollaboratorINDUSTRY
Pfizer
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

1. Signed and dated Informed Consent Form (by the patient or a legally acceptable representative as per the local regulations). 2. Female or male at least 18 years of age. 3. Histologically or cytologically confirmed advanced solid tumor with no available standard treatment options in the opinion of the Investigator 4. Eastern Cooperative Oncology Group (ECOG) Performance status ≤ 2. 5. Expected life expectancy of ≥ 3 months. 6. Able to swallow the study drug (no contraindication to oral agents). 7. Hepatic function at screening and enrollment as defined by the NCI organ dysfunction working group (NCI-ODWG) criteria. 8. Adequate other organ function at screening and enrollment. 9. Female patients of childbearing potential must have a negative serum pregnancy test at screening and must agree to use a highly effective form of contraception from the time of the first dose of study drug through 7 months after the last dose of study drug. 10. Male patients must agree to use a condom when having sex with a pregnant woman or with a non-pregnant female partner of childbearing potential, from 21 days before the first dose of study drug through 4 months after last dose of study drug. 11. Female patients must not be breastfeeding at screening nor during the study participation until 7 months after the last dose of the study drug. 12. Willingness and ability to comply with scheduled visits, treatment plan, laboratory tests, and other trial procedures.

Exclusion criteria

1. Treatment within 14 days or five half lives prior to enrollment whichever is longer with any type of systemic anticancer-therapy or any investigational drug 2. Have not recovered (recovery is defined as CTCAE grade ≤ 1) from the acute toxicities of previous anticancer standard or investigational therapy, except treatment-related alopecia or laboratory abnormalities otherwise meeting eligibility requirements. 3. Major surgery within 28 days prior to enrollment. 4. Serious accompanying cardiac disorder 5. Active known or suspected brain metastasis or active leptomeningeal disease needing treatment 6. Symptomatic or impending spinal cord compression or cauda equine syndrome 7. Has undergone a liver transplant, kidney transplant or nephrectomy. 8. Prior allergic reaction or severe intolerance (meeting the criteria for a serious adverse event, a grade 3 or 4 AE, or permanent treatment discontinuation) to a poly ADP ribose polymerase (PARP) inhibitor. 9. Known myelodysplastic syndrome 10. Seropositive for human immunodeficiency virus (HIV). 11. Any serious or unstable medical condition that interferes with ability to tolerate treatment or assessments associated with the protocol. 12. Gastrointestinal disorder affecting absorption. 13. Known or suspected hypersensitivity to any of the talazoparib capsule components. 14. Any condition or reason that interferes with ability to participate in the study, tolerate treatment or assessments associated with the protocol, causes undue risk, or complicates the interpretation of safety data, in the opinion of the Investigator or Medical Monitor

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22AUC0-24 of talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose.
Unbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22Cmaxu was defined as the maximum observed plasma concentration for unbound talazoparib. Cmaxu = fu\*Cmax.
Unbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22AUC0-24u for unbound talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose. AUC0-24u = fu\*AUC0-24. fu= Fraction of Unbound (fu) Plasma.
Maximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22Cmax was defined as the maximum observed plasma concentration of talazoparib.

Secondary

MeasureTime frameDescription
Fraction of Unbound (fu) Plasma Talazoparib on Day 1Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1Fraction of unbound drug (fu) was defined as the ratio of unbound drug concentration to the total drug concentration and reported as percentage (%).
Unbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 1Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1AUC0-24u for unbound talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose. AUC0-24u = fu\*AUC0-24.
Unbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 1Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1Cmaxu was defined as the maximum observed plasma concentration for unbound talazoparib. Cmaxu = fu\*Cmax
Plasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Pre-dose on Day 8, 15 and 22Ctrough was defined as plasma trough (pre-dose) concentration of talazoparib. Acceptance criteria for Ctrough on Day 15 and Day 22: received 10 consecutive days of dosing immediately before PK sampling day; Sample drawn within 24 +/-2 hours of the previous dose, and not more than +10 minute after the drug administration on the PK collection day. Ctrough on Day 8: received 7 consecutive days of dosing immediately before PK sampling day; sample drawn within 24 +/- 2 hours of the previous dose, and not more than +10 minute after the drug administration on the PK collection day.
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22Tmax was defined as the time to reach maximum observed plasma concentration of talazoparib.
Fraction of Unbound (fu) Plasma Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22Fraction of unbound drug (fu) was defined as the ratio of unbound drug concentration to the total drug concentration and reported as percentage (%).
Accumulation Ratio (Rac) of Plasma TalazoparibPre-dose (within 60 minutes prior to dose) on Day 1, pre-dose(24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose) on Day 22 and 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Days 1 and 22Accumulation ratio for AUC0-24 was calculated as area under the curve from time zero to 24 hours on Day 22 divided by area under the curve from time zero to 24 hours on Day 1.
Amount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 22Urine voided post-dose at any time between 0 to 12 and any time between 12 to 24 hours on Day 22Ae 0-24 is the amount of talazoparib excreted unchanged in urine from time 0 to 24 hours post dose.
Apparent Clearance (CL/F) of Plasma Talazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22Talazoparib clearance is a measure of the rate at which talazoparib is metabolized or eliminated by normal biological processes.
Amount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 1A single void at pre-dose, post-dose at any time between 0 to 12 and any time between 12 to 24 hours on Day 1Ae 0-24 is the amount of talazoparib excreted unchanged in urine from time 0 to 24 hours post dose.
Percentage of Talazoparib Excreted in Urine From Time Zero to 24 Hours (Ae 0-24%) on Day 1A single void at pre-dose, post-dose at any time between 0 to 12 and any time between 12 to 24 hours on Day 1Ae0-24% was defined as the amount of talazoparib excreted in urine from time 0 to 24 hours expressed as percentage of administered dose.
Percentage of Talazoparib Excreted in Urine From Time 0 to 24 Hours (Ae 0-24%) on Day 22Urine voided post-dose at any time between 0 to 12 and any time between 12 to 24 hours (hrs) on Day 22Ae 0-24% was defined as the amount of talazoparib excreted in urine from time 0 to 24 hours expressed as percentage of administered dose.
Renal Clearance (CLr) of Talazoparib on Day 22Ae: Post-dose at any time between 0 to 12, 12 to 24 hrs on Day 22; AUC0-24: Pre-dose (24 hrs +/- 60 minutes from previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, any time between 8 to12, 24 hrs post-dose on Day 22Renal clearance was calculated as cumulative amount of drug excreted in urine during the 24 hours dosing interval (Ae) divided by area under the plasma concentration time-curve from time zero to 24 hours post dose (AUC0-24).
Number of Participants With Clinically Significant Laboratory AbnormalitiesBaseline up to 30 days after last dose of study drug (up to 52 days)Clinically significant laboratory abnormalities included aspartate transaminase (AST) or alanine aminotransferase (ALT) \>=3 times ULN (\>5 \*ULN if baseline ALT/AST is \>3 \*ULN) and total bilirubin (TBL) \>2 times ULN or INR \>1.5, AST or ALT \>=3 times ULN with signs and symptoms consistent with hepatitis and/or eosinophilia (\>=500 eosinophils/microliter).
Change From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyBaseline, Day 2, 8, 15, 22 and End of Study (Day 52)Systolic blood pressure and diastolic blood pressure were evaluated for examination of vital signs.
Change From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyBaseline, Day 2, 8, 15, 22 and End of Study (Day 52)Heart rate was measured in beats per minute.
Change From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyBaseline, Day 8, 15, 22 and End of Study (Day 52)Respiratory rate was measured in terms of breaths per minute.
Change From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyBaseline, Day 8, 15, 22 and End of Study (Day 52)
Number of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaBaseline up to 30 days after last dose of study drug (up to 52 days)Pre-specified 12-Lead electrocardiogram (ECG) Criteria: QTCF (Fridericia's correction formula) : \>=450 to \<480 milliseconds, \>=480 to \<500 milliseconds, \>=500 milliseconds, increase from baseline \>=30 - \<60, increase from baseline \>=60, PR interval: \>=300 milliseconds, increase from baseline \>=25%; QRS duration: \>=140 milliseconds, increase from baseline \>=50%; QT interval: \>=500 milliseconds; QT Interval: \>= 500 milliseconds.
Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreening (2 to 28 days prior to Day 1), Day -1 (1 day prior to Day 1), safety follow up (Visit up to Day 52)As per ECOG, participant's performance status was measured as: 0=fully active/able to carry on all pre-disease activities without restriction; 1= restricted in physically strenuous activity but ambulatory and able to carry out work of a light and sedentary nature, e.g., light housework, office work; 2= ambulatory and capable of all self-care, but unable to carry out any work activities, up and about more than 50% of waking hours; 3=capable of only limited self-care, confined to bed/chair \>50% of waking hours; 4=completely disabled, cannot carry on any self-care, totally confined to bed/chair.
Unbound Apparent Clearance (CLu/F) of PlasmaTalazoparib on Day 22Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22Clearance of unbound talazoparib is a measure of the rate at which unbound talazoparib is metabolized or eliminated by normal biological processes.
Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 1Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1AUC0-24 of talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose.
Maximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 1Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1Cmax was defined as the maximum observed plasma concentration of talazoparib.
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 1Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1Tmax was defined as the time to reach maximum observed plasma concentration of talazoparib.

Other

MeasureTime frameDescription
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)Baseline up to 30 days after last dose of study drug (up to 52 days)An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; medically important events. TEAEs were events between first dose of Talazoparib and up to 30 days after the last dose of Talazoparib (up to 52 days) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and all non-SAEs.
Number of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsBaseline up to 30 days after last dose of study drug (up to 52 days)A treatment-related adverse event was any untoward medical occurrence attributed to talazoparib in a participant who received talazoparib. A treatment-related serious adverse event was a treatment-related adverse event resulting in any of the following outcomes or deemed significant for any other reason: death; life-threatening experience (immediate risk of dying); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; Congenital anomaly. Relatedness to talazoparib was assessed by the investigator.
Number of Participants With TEAEs Resulting in DeathBaseline up to 30 days after last dose of study drug (up to 52 days)An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; medically important events. Treatment-emergent were events between first dose of Talazoparib and up to 30 days after the last dose of Talazoparib (up to 52 days) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and non-SAEs. Number of participants with TEAEs resulting in death are reported.
Number of Participants With TEAEs Leading to Study Drug DiscontinuationBaseline up to 30 days after last dose of study drug (up to 52 days)An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; medically important events. Treatment-emergent were events between first dose of Talazoparib and up to 30 days after the last dose of Talazoparib (up to 52 days) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and non-SAEs. Number of participants with TEAEs leading to study drug discontinuation are reported.

Countries

United States

Participant flow

Pre-assignment details

Participants with advanced solid tumors and impaired hepatic function were enrolled. Participants were assigned to 1 of the 4 groups based on their hepatic function as per the national cancer institute organ dysfunction working group (NCI-ODWG) classification.

Participants by arm

ArmCount
Talazoparib: Normal Hepatic Function
Participants with TB and AST \<=ULN received 0.5 mg (2 capsules of 0.25 mg) of talazoparib daily, orally for 22 days.
7
Talazoparib: Mild Hepatic Impairment
Participants with TB \<=ULN and AST greater than (\>) ULN or TB \>1.0 to 1.5\* ULN and any AST value, received talazoparib 0.5 mg (2 capsules of 0.25 mg), orally once daily for 22 days.
10
Talazoparib: Moderate Hepatic Impairment
Participants with TB \>1.5 to 3.0 \*ULN and any AST value received talazoparib 0.5 mg (2 capsules of 0.25 mg), orally once daily for 22 days.
5
Talazoparib: Severe Hepatic Impairment
Participants with TB \>3\*ULN and any AST value received talazoparib 0.5 mg (2 capsules of 0.25 mg), orally once daily for 22 days.
16
Total38

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyAdverse Event0008
Overall StudyDeath0011
Overall StudyProgressive Disease1011
Overall StudyWithdrawal by Subject0201

Baseline characteristics

CharacteristicTalazoparib: Normal Hepatic FunctionTotalTalazoparib: Severe Hepatic ImpairmentTalazoparib: Moderate Hepatic ImpairmentTalazoparib: Mild Hepatic Impairment
Age, Continuous60.3 years
STANDARD_DEVIATION 7.61
56.1 years
STANDARD_DEVIATION 12.4
52.7 years
STANDARD_DEVIATION 11.98
60.4 years
STANDARD_DEVIATION 6.31
56.6 years
STANDARD_DEVIATION 17.08
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants6 Participants1 Participants2 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants28 Participants14 Participants3 Participants7 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
2 Participants4 Participants1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Asian
1 Participants4 Participants1 Participants0 Participants2 Participants
Race/Ethnicity, Customized
Other
1 Participants3 Participants2 Participants0 Participants0 Participants
Race/Ethnicity, Customized
White
5 Participants31 Participants13 Participants5 Participants8 Participants
Sex: Female, Male
Female
5 Participants26 Participants9 Participants5 Participants7 Participants
Sex: Female, Male
Male
2 Participants12 Participants7 Participants0 Participants3 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 70 / 101 / 57 / 16
other
Total, other adverse events
6 / 77 / 103 / 510 / 16
serious
Total, serious adverse events
1 / 73 / 102 / 513 / 16

Outcome results

Primary

Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 22

AUC0-24 of talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: Pharmacokinetic (PK) evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 22111.8 nanogram*hour per milliliterGeometric Coefficient of Variation 30
Talazoparib: Mild Hepatic ImpairmentArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 22159.0 nanogram*hour per milliliterGeometric Coefficient of Variation 99
Talazoparib: Moderate Hepatic ImpairmentArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 22123.6 nanogram*hour per milliliterGeometric Coefficient of Variation 30
Talazoparib: Severe Hepatic ImpairmentArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 22NA nanogram*hour per milliliter
Comparison: AUC0-24 was natural log-transformed and analyzed using an analysis of variance (ANOVA) model with hepatic function group as a fixed effect.90% CI: [79.92, 252.98]
Comparison: AUC0-24 was natural log-transformed and analyzed using an analysis of variance (ANOVA) model with hepatic function group as a fixed effect.90% CI: [54.58, 223.85]
Primary

Maximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 22

Cmax was defined as the maximum observed plasma concentration of talazoparib.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: PK evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 2210.30 nanogram per milliliterGeometric Coefficient of Variation 23
Talazoparib: Mild Hepatic ImpairmentMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 2211.30 nanogram per milliliterGeometric Coefficient of Variation 65
Talazoparib: Moderate Hepatic ImpairmentMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 2213.56 nanogram per milliliterGeometric Coefficient of Variation 23
Talazoparib: Severe Hepatic ImpairmentMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 22NA nanogram per milliliter
Comparison: Cmax was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [70.93, 169.84]
Comparison: Cmax was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [77.14, 224.74]
Primary

Unbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 22

AUC0-24u for unbound talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose. AUC0-24u = fu\*AUC0-24. fu= Fraction of Unbound (fu) Plasma.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: PK evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 2230.17 nanogram*hour per milliliterGeometric Coefficient of Variation 11
Talazoparib: Mild Hepatic ImpairmentUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 2245.08 nanogram*hour per milliliterGeometric Coefficient of Variation 84
Talazoparib: Moderate Hepatic ImpairmentUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 2233.50 nanogram*hour per milliliterGeometric Coefficient of Variation 35
Talazoparib: Severe Hepatic ImpairmentUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 22NA nanogram*hour per milliliter
Comparison: AUC0-24u was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [91.49, 243.93]
Comparison: AUC0-24u was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [60.91, 202.43]
Primary

Unbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 22

Cmaxu was defined as the maximum observed plasma concentration for unbound talazoparib. Cmaxu = fu\*Cmax.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: PK evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 222.778 nanogram per milliliterGeometric Coefficient of Variation 27
Talazoparib: Mild Hepatic ImpairmentUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 223.204 nanogram per milliliterGeometric Coefficient of Variation 56
Talazoparib: Moderate Hepatic ImpairmentUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 223.675 nanogram per milliliterGeometric Coefficient of Variation 28
Talazoparib: Severe Hepatic ImpairmentUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 22NA nanogram per milliliter
Comparison: Cmaxu was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [77.95, 170.6]
Comparison: Cmaxu was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [81.87, 213.67]
Secondary

Accumulation Ratio (Rac) of Plasma Talazoparib

Accumulation ratio for AUC0-24 was calculated as area under the curve from time zero to 24 hours on Day 22 divided by area under the curve from time zero to 24 hours on Day 1.

Time frame: Pre-dose (within 60 minutes prior to dose) on Day 1, pre-dose(24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose) on Day 22 and 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Days 1 and 22

Population: PK evaluable analysis population was analyzed. Here, Overall Number of Participants Analyzed =participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionAccumulation Ratio (Rac) of Plasma Talazoparib5.070 ratioGeometric Coefficient of Variation 24
Talazoparib: Mild Hepatic ImpairmentAccumulation Ratio (Rac) of Plasma Talazoparib5.134 ratioGeometric Coefficient of Variation 68
Talazoparib: Moderate Hepatic ImpairmentAccumulation Ratio (Rac) of Plasma Talazoparib4.771 ratioGeometric Coefficient of Variation 31
Talazoparib: Severe Hepatic ImpairmentAccumulation Ratio (Rac) of Plasma TalazoparibNA ratio
Secondary

Amount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 1

Ae 0-24 is the amount of talazoparib excreted unchanged in urine from time 0 to 24 hours post dose.

Time frame: A single void at pre-dose, post-dose at any time between 0 to 12 and any time between 12 to 24 hours on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 10.03816 milligramGeometric Coefficient of Variation 79
Talazoparib: Mild Hepatic ImpairmentAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 10.03534 milligramGeometric Coefficient of Variation 71
Talazoparib: Moderate Hepatic ImpairmentAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 10.04292 milligramGeometric Coefficient of Variation 85
Talazoparib: Severe Hepatic ImpairmentAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 10.02319 milligramGeometric Coefficient of Variation 107
Secondary

Amount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 22

Ae 0-24 is the amount of talazoparib excreted unchanged in urine from time 0 to 24 hours post dose.

Time frame: Urine voided post-dose at any time between 0 to 12 and any time between 12 to 24 hours on Day 22

Population: PK evaluable analysis population was analyzed. Here, Overall Number of Participants Analyzed =participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 220.2229 milligramGeometric Coefficient of Variation 30
Talazoparib: Mild Hepatic ImpairmentAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 220.1819 milligramGeometric Coefficient of Variation 34
Talazoparib: Moderate Hepatic ImpairmentAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 220.1867 milligramGeometric Coefficient of Variation 32
Talazoparib: Severe Hepatic ImpairmentAmount of Talazoparib Excreted Unchanged in Urine From Time Zero to 24 Hours (Ae 0-24) on Day 22NA milligram
Secondary

Apparent Clearance (CL/F) of Plasma Talazoparib on Day 22

Talazoparib clearance is a measure of the rate at which talazoparib is metabolized or eliminated by normal biological processes.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: PK evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionApparent Clearance (CL/F) of Plasma Talazoparib on Day 225.070 liter per hourGeometric Coefficient of Variation 24
Talazoparib: Mild Hepatic ImpairmentApparent Clearance (CL/F) of Plasma Talazoparib on Day 225.134 liter per hourGeometric Coefficient of Variation 68
Talazoparib: Moderate Hepatic ImpairmentApparent Clearance (CL/F) of Plasma Talazoparib on Day 224.771 liter per hourGeometric Coefficient of Variation 31
Talazoparib: Severe Hepatic ImpairmentApparent Clearance (CL/F) of Plasma Talazoparib on Day 22NA liter per hour
Secondary

Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 1

AUC0-24 of talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose.

Time frame: Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 122.21 nanogram*hour per milliliterGeometric Coefficient of Variation 41
Talazoparib: Mild Hepatic ImpairmentArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 127.63 nanogram*hour per milliliterGeometric Coefficient of Variation 38
Talazoparib: Moderate Hepatic ImpairmentArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 125.20 nanogram*hour per milliliterGeometric Coefficient of Variation 7
Talazoparib: Severe Hepatic ImpairmentArea Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24) of Talazoparib on Day 121.26 nanogram*hour per milliliterGeometric Coefficient of Variation 58
Comparison: AUC0-24 was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [85.19, 181.66]
Comparison: AUC0-24 was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [73.9, 174.07]
Comparison: AUC0-24 was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [67.9, 134.83]
Secondary

Change From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of Study

Systolic blood pressure and diastolic blood pressure were evaluated for examination of vital signs.

Time frame: Baseline, Day 2, 8, 15, 22 and End of Study (Day 52)

Population: Safety analysis set included all participants who received any amount of talazoparib. Here, 'number analyzed' signifies participants evaluable for each specified row.

ArmMeasureGroupValue (MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 15-8.4 millimeter of mercury (mmHg)Standard Deviation 8.64
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 2-12.3 millimeter of mercury (mmHg)Standard Deviation 17.72
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Baseline75.9 millimeter of mercury (mmHg)Standard Deviation 12.52
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at end of study (Day 52)-0.8 millimeter of mercury (mmHg)Standard Deviation 18.36
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 22-7.5 millimeter of mercury (mmHg)Standard Deviation 15.1
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at end of study (Day 52)-0.3 millimeter of mercury (mmHg)Standard Deviation 8.26
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 22-3.5 millimeter of mercury (mmHg)Standard Deviation 9.14
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 15-1.4 millimeter of mercury (mmHg)Standard Deviation 6.92
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 8-2.0 millimeter of mercury (mmHg)Standard Deviation 20.22
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Baseline128.1 millimeter of mercury (mmHg)Standard Deviation 19.22
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 8-1.0 millimeter of mercury (mmHg)Standard Deviation 12.04
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 2-5.0 millimeter of mercury (mmHg)Standard Deviation 6.76
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 22-3.0 millimeter of mercury (mmHg)Standard Deviation 7.82
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Baseline110.3 millimeter of mercury (mmHg)Standard Deviation 11.84
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 2-1.1 millimeter of mercury (mmHg)Standard Deviation 12.86
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 8-2.8 millimeter of mercury (mmHg)Standard Deviation 9.85
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 150.3 millimeter of mercury (mmHg)Standard Deviation 12.08
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 22-4.3 millimeter of mercury (mmHg)Standard Deviation 14.3
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at end of study (Day 52)0.7 millimeter of mercury (mmHg)Standard Deviation 14.22
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Baseline65.9 millimeter of mercury (mmHg)Standard Deviation 10.77
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 24.1 millimeter of mercury (mmHg)Standard Deviation 7.69
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 84.1 millimeter of mercury (mmHg)Standard Deviation 6.66
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 150.9 millimeter of mercury (mmHg)Standard Deviation 9
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at end of study (Day 52)1.9 millimeter of mercury (mmHg)Standard Deviation 7.52
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 22-3.3 millimeter of mercury (mmHg)Standard Deviation 15.53
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Baseline68.4 millimeter of mercury (mmHg)Standard Deviation 5.59
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 2-4.5 millimeter of mercury (mmHg)Standard Deviation 6.19
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 8-5.6 millimeter of mercury (mmHg)Standard Deviation 11.97
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Baseline121.8 millimeter of mercury (mmHg)Standard Deviation 23.15
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 8-0.8 millimeter of mercury (mmHg)Standard Deviation 9.12
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 150.8 millimeter of mercury (mmHg)Standard Deviation 10.84
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 2-12.5 millimeter of mercury (mmHg)Standard Deviation 14.48
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 22-10.7 millimeter of mercury (mmHg)Standard Deviation 32.56
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 15-6.0 millimeter of mercury (mmHg)Standard Deviation 23.47
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 8-4.1 millimeter of mercury (mmHg)Standard Deviation 9.91
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 22.2 millimeter of mercury (mmHg)Standard Deviation 10.43
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at end of study (Day 52)-17.0 millimeter of mercury (mmHg)
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 15-2.3 millimeter of mercury (mmHg)Standard Deviation 13.91
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Baseline73.9 millimeter of mercury (mmHg)Standard Deviation 10.6
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 8-5.3 millimeter of mercury (mmHg)Standard Deviation 10.8
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 22-6.0 millimeter of mercury (mmHg)Standard Deviation 11.17
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 15-2.1 millimeter of mercury (mmHg)Standard Deviation 4.97
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudyDiastolic Blood Pressure: Change at Day 2-0.8 millimeter of mercury (mmHg)Standard Deviation 7.03
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Baseline115.8 millimeter of mercury (mmHg)Standard Deviation 13.57
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at end of study (Day 52)-26.0 millimeter of mercury (mmHg)
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign -Blood Pressure at Day 2, 8, 15, 22 and End of StudySystolic Blood Pressure: Change at Day 22-7.8 millimeter of mercury (mmHg)Standard Deviation 17.2
Secondary

Change From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of Study

Heart rate was measured in beats per minute.

Time frame: Baseline, Day 2, 8, 15, 22 and End of Study (Day 52)

Population: Safety analysis set included all participants who received any amount of talazoparib. Here, 'number analyzed' signifies participants evaluable for each specified row.

ArmMeasureGroupValue (MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 155.1 beats per minuteStandard Deviation 9.82
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 222.2 beats per minuteStandard Deviation 9.81
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at end of study (Day 52)8.5 beats per minuteStandard Deviation 11.9
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 81.7 beats per minuteStandard Deviation 7.78
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 23.0 beats per minuteStandard Deviation 7.64
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyBaseline75.9 beats per minuteStandard Deviation 7.67
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 24.7 beats per minuteStandard Deviation 10.01
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 15-6.0 beats per minuteStandard Deviation 12.76
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at end of study (Day 52)3.1 beats per minuteStandard Deviation 15.56
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 22-9.9 beats per minuteStandard Deviation 20.38
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyBaseline89.2 beats per minuteStandard Deviation 19.34
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 83.5 beats per minuteStandard Deviation 16.1
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 22-2.0 beats per minuteStandard Deviation 1
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyBaseline87.4 beats per minuteStandard Deviation 22.13
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 21.0 beats per minuteStandard Deviation 6.16
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 81.6 beats per minuteStandard Deviation 4.67
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 152.5 beats per minuteStandard Deviation 7.05
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 153.8 beats per minuteStandard Deviation 15.52
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 8-2.7 beats per minuteStandard Deviation 8.79
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 222.3 beats per minuteStandard Deviation 19.16
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at Day 21.4 beats per minuteStandard Deviation 11.01
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyBaseline92.3 beats per minuteStandard Deviation 16.76
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Heart Rate at Day 2, 8, 15, 22 and End of StudyChange at end of study (Day 52)23.0 beats per minute
Secondary

Change From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of Study

Respiratory rate was measured in terms of breaths per minute.

Time frame: Baseline, Day 8, 15, 22 and End of Study (Day 52)

Population: Safety analysis set included all participants who received any amount of talazoparib. Here, 'number analyzed' signifies participants evaluable for each specified row.

ArmMeasureGroupValue (MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at end of study (Day 52)-0.5 breaths per minuteStandard Deviation 1
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyBaseline18.3 breaths per minuteStandard Deviation 2.63
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 15-1.6 breaths per minuteStandard Deviation 3.15
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 22-0.2 breaths per minuteStandard Deviation 0.98
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 8-0.3 breaths per minuteStandard Deviation 2.06
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 15-0.4 breaths per minuteStandard Deviation 1.51
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyBaseline17.1 breaths per minuteStandard Deviation 1.2
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 80.6 breaths per minuteStandard Deviation 1.77
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 22-0.6 breaths per minuteStandard Deviation 1.41
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at end of study (Day 52)0.1 breaths per minuteStandard Deviation 1.46
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 81.2 breaths per minuteStandard Deviation 2.39
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 221.3 breaths per minuteStandard Deviation 0.58
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyBaseline16.8 breaths per minuteStandard Deviation 0.84
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 150.3 breaths per minuteStandard Deviation 1.53
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 8-0.1 breaths per minuteStandard Deviation 2.19
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 221.1 breaths per minuteStandard Deviation 1.17
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at Day 150.4 breaths per minuteStandard Deviation 1.51
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyBaseline17.4 breaths per minuteStandard Deviation 1.63
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Respiratory Rate at Day 8, 15, 22 and End of StudyChange at end of study (Day 52)2.0 breaths per minute
Secondary

Change From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of Study

Time frame: Baseline, Day 8, 15, 22 and End of Study (Day 52)

Population: Safety analysis set included all participants who received any amount of talazoparib. Here, 'number analyzed' signifies participants evaluable for each specified row.

ArmMeasureGroupValue (MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyBaseline82.01 kilogramStandard Deviation 15.749
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 8-0.04 kilogramStandard Deviation 0.943
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at end of study (Day 52)0.48 kilogramStandard Deviation 1.839
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 22-0.78 kilogramStandard Deviation 0.546
Talazoparib: Normal Hepatic FunctionChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 15-0.36 kilogramStandard Deviation 0.621
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 220.28 kilogramStandard Deviation 1.647
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at end of study (Day 52)1.81 kilogramStandard Deviation 1.577
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 8-0.10 kilogramStandard Deviation 1.865
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyBaseline63.07 kilogramStandard Deviation 11.493
Talazoparib: Mild Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 15-0.09 kilogramStandard Deviation 2.119
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 15-1.78 kilogramStandard Deviation 0.9
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 22-1.57 kilogramStandard Deviation 0.462
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 8-2.02 kilogramStandard Deviation 1.656
Talazoparib: Moderate Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyBaseline77.78 kilogramStandard Deviation 17.07
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at end of study (Day 52)0.90 kilogram
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 15-1.29 kilogramStandard Deviation 5.025
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyBaseline66.98 kilogramStandard Deviation 12.979
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 8-1.50 kilogramStandard Deviation 3.728
Talazoparib: Severe Hepatic ImpairmentChange From Baseline in Vital Sign- Weight at Day 8, 15, 22 and End of StudyChange at Day 22-2.06 kilogramStandard Deviation 5.416
Secondary

Fraction of Unbound (fu) Plasma Talazoparib on Day 1

Fraction of unbound drug (fu) was defined as the ratio of unbound drug concentration to the total drug concentration and reported as percentage (%).

Time frame: Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionFraction of Unbound (fu) Plasma Talazoparib on Day 128.76 percentage of drug concentrationGeometric Coefficient of Variation 20
Talazoparib: Mild Hepatic ImpairmentFraction of Unbound (fu) Plasma Talazoparib on Day 128.11 percentage of drug concentrationGeometric Coefficient of Variation 14
Talazoparib: Moderate Hepatic ImpairmentFraction of Unbound (fu) Plasma Talazoparib on Day 127.47 percentage of drug concentrationGeometric Coefficient of Variation 15
Talazoparib: Severe Hepatic ImpairmentFraction of Unbound (fu) Plasma Talazoparib on Day 134.66 percentage of drug concentrationGeometric Coefficient of Variation 17
Secondary

Fraction of Unbound (fu) Plasma Talazoparib on Day 22

Fraction of unbound drug (fu) was defined as the ratio of unbound drug concentration to the total drug concentration and reported as percentage (%).

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: Analysis population included participants with available data.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionFraction of Unbound (fu) Plasma Talazoparib on Day 2226.98 percentage of drug concentrationGeometric Coefficient of Variation 23
Talazoparib: Mild Hepatic ImpairmentFraction of Unbound (fu) Plasma Talazoparib on Day 2227.71 percentage of drug concentrationGeometric Coefficient of Variation 18
Talazoparib: Moderate Hepatic ImpairmentFraction of Unbound (fu) Plasma Talazoparib on Day 2227.10 percentage of drug concentrationGeometric Coefficient of Variation 9
Talazoparib: Severe Hepatic ImpairmentFraction of Unbound (fu) Plasma Talazoparib on Day 2233.92 percentage of drug concentrationGeometric Coefficient of Variation 25
Secondary

Maximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 1

Cmax was defined as the maximum observed plasma concentration of talazoparib.

Time frame: Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 13.068 nanogram per milliliterGeometric Coefficient of Variation 66
Talazoparib: Mild Hepatic ImpairmentMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 13.047 nanogram per milliliterGeometric Coefficient of Variation 32
Talazoparib: Moderate Hepatic ImpairmentMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 12.959 nanogram per milliliterGeometric Coefficient of Variation 44
Talazoparib: Severe Hepatic ImpairmentMaximum Observed Plasma Concentration (Cmax) of Talazoparib on Day 11.965 nanogram per milliliterGeometric Coefficient of Variation 90
Comparison: Cmax was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [57.74, 170.8]
Comparison: Cmax was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [52.22, 178.14]
Comparison: Cmax was natural log-transformed and analyzed using ANOVA model with hepatic function group as a fixed effect.90% CI: [39.65, 103.46]
Secondary

Number of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) Criteria

Pre-specified 12-Lead electrocardiogram (ECG) Criteria: QTCF (Fridericia's correction formula) : \>=450 to \<480 milliseconds, \>=480 to \<500 milliseconds, \>=500 milliseconds, increase from baseline \>=30 - \<60, increase from baseline \>=60, PR interval: \>=300 milliseconds, increase from baseline \>=25%; QRS duration: \>=140 milliseconds, increase from baseline \>=50%; QT interval: \>=500 milliseconds; QT Interval: \>= 500 milliseconds.

Time frame: Baseline up to 30 days after last dose of study drug (up to 52 days)

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

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=450 - <480 milliseconds2 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=480 - <500 milliseconds0 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=500 milliseconds0 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=30 - <60 milliseconds2 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=60 milliseconds0 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: >=300 milliseconds1 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: Increase from baseline >=25%1 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: >=140 milliseconds0 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: Increase from baseline >=50%0 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQT Interval: >=500 milliseconds0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=500 milliseconds0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: Increase from baseline >=50%0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=30 - <60 milliseconds0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=60 milliseconds1 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: >=300 milliseconds0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: Increase from baseline >=25%0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQT Interval: >=500 milliseconds0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: >=140 milliseconds0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=450 - <480 milliseconds2 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=480 - <500 milliseconds0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: >=140 milliseconds0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: Increase from baseline >=25%0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQT Interval: >=500 milliseconds1 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=450 - <480 milliseconds1 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=30 - <60 milliseconds0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: >=300 milliseconds0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: Increase from baseline >=50%0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=480 - <500 milliseconds0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=60 milliseconds0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=500 milliseconds0 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=60 milliseconds1 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: >=140 milliseconds1 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: >=300 milliseconds0 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQT Interval: >=500 milliseconds0 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaPR Interval: Increase from baseline >=25%2 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=480 - <500 milliseconds1 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=500 milliseconds1 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: Increase from baseline >=30 - <60 milliseconds3 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQTCF: >=450 - <480 milliseconds4 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants Who Met the Pre-specified 12-Lead Electrocardiogram (ECG) CriteriaQRS Duration: Increase from baseline >=50%0 Participants
Secondary

Number of Participants With Clinically Significant Laboratory Abnormalities

Clinically significant laboratory abnormalities included aspartate transaminase (AST) or alanine aminotransferase (ALT) \>=3 times ULN (\>5 \*ULN if baseline ALT/AST is \>3 \*ULN) and total bilirubin (TBL) \>2 times ULN or INR \>1.5, AST or ALT \>=3 times ULN with signs and symptoms consistent with hepatitis and/or eosinophilia (\>=500 eosinophils/microliter).

Time frame: Baseline up to 30 days after last dose of study drug (up to 52 days)

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

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants With Clinically Significant Laboratory Abnormalities0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Clinically Significant Laboratory Abnormalities0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Clinically Significant Laboratory Abnormalities0 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Clinically Significant Laboratory Abnormalities3 Participants
Secondary

Number of Participants With Eastern Cooperative Oncology Group (ECOG) Performance Status

As per ECOG, participant's performance status was measured as: 0=fully active/able to carry on all pre-disease activities without restriction; 1= restricted in physically strenuous activity but ambulatory and able to carry out work of a light and sedentary nature, e.g., light housework, office work; 2= ambulatory and capable of all self-care, but unable to carry out any work activities, up and about more than 50% of waking hours; 3=capable of only limited self-care, confined to bed/chair \>50% of waking hours; 4=completely disabled, cannot carry on any self-care, totally confined to bed/chair.

Time frame: Screening (2 to 28 days prior to Day 1), Day -1 (1 day prior to Day 1), safety follow up (Visit up to Day 52)

Population: Safety analysis set included all participants who received any amount of talazoparib. Here, 'number analyzed' signifies participants evaluable for each specified row.

ArmMeasureGroupCategoryValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 03 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 12 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 30 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 20 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 40 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 02 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 30 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 14 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 30 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 40 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 02 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 20 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 15 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 40 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 20 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 21 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 14 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 40 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 30 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 18 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 01 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 21 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 40 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 21 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 19 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 40 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 30 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 00 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 30 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 01 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 22 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 01 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 12 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 22 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 30 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 40 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 00 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 12 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 30 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 40 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 00 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 10 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 20 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 30 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 40 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 111 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 112 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 11 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 00 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 40 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 00 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 20 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 30 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusScreeningECOG Performance Status: 24 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 40 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 40 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 30 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 30 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusSafety follow upECOG Performance Status: 00 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Eastern Cooperative Oncology Group (ECOG) Performance StatusDay -1ECOG Performance Status: 24 Participants
Secondary

Percentage of Talazoparib Excreted in Urine From Time 0 to 24 Hours (Ae 0-24%) on Day 22

Ae 0-24% was defined as the amount of talazoparib excreted in urine from time 0 to 24 hours expressed as percentage of administered dose.

Time frame: Urine voided post-dose at any time between 0 to 12 and any time between 12 to 24 hours (hrs) on Day 22

Population: PK evaluable analysis population was analyzed. Here, Overall Number of Participants Analyzed =participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionPercentage of Talazoparib Excreted in Urine From Time 0 to 24 Hours (Ae 0-24%) on Day 2244.58 percentage of doseGeometric Coefficient of Variation 30
Talazoparib: Mild Hepatic ImpairmentPercentage of Talazoparib Excreted in Urine From Time 0 to 24 Hours (Ae 0-24%) on Day 2236.36 percentage of doseGeometric Coefficient of Variation 34
Talazoparib: Moderate Hepatic ImpairmentPercentage of Talazoparib Excreted in Urine From Time 0 to 24 Hours (Ae 0-24%) on Day 2237.40 percentage of doseGeometric Coefficient of Variation 31
Talazoparib: Severe Hepatic ImpairmentPercentage of Talazoparib Excreted in Urine From Time 0 to 24 Hours (Ae 0-24%) on Day 22NA percentage of dose
Secondary

Percentage of Talazoparib Excreted in Urine From Time Zero to 24 Hours (Ae 0-24%) on Day 1

Ae0-24% was defined as the amount of talazoparib excreted in urine from time 0 to 24 hours expressed as percentage of administered dose.

Time frame: A single void at pre-dose, post-dose at any time between 0 to 12 and any time between 12 to 24 hours on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionPercentage of Talazoparib Excreted in Urine From Time Zero to 24 Hours (Ae 0-24%) on Day 17.638 percentage of doseGeometric Coefficient of Variation 79
Talazoparib: Mild Hepatic ImpairmentPercentage of Talazoparib Excreted in Urine From Time Zero to 24 Hours (Ae 0-24%) on Day 17.070 percentage of doseGeometric Coefficient of Variation 71
Talazoparib: Moderate Hepatic ImpairmentPercentage of Talazoparib Excreted in Urine From Time Zero to 24 Hours (Ae 0-24%) on Day 18.582 percentage of doseGeometric Coefficient of Variation 85
Talazoparib: Severe Hepatic ImpairmentPercentage of Talazoparib Excreted in Urine From Time Zero to 24 Hours (Ae 0-24%) on Day 14.641 percentage of doseGeometric Coefficient of Variation 107
Secondary

Plasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22

Ctrough was defined as plasma trough (pre-dose) concentration of talazoparib. Acceptance criteria for Ctrough on Day 15 and Day 22: received 10 consecutive days of dosing immediately before PK sampling day; Sample drawn within 24 +/-2 hours of the previous dose, and not more than +10 minute after the drug administration on the PK collection day. Ctrough on Day 8: received 7 consecutive days of dosing immediately before PK sampling day; sample drawn within 24 +/- 2 hours of the previous dose, and not more than +10 minute after the drug administration on the PK collection day.

Time frame: Pre-dose on Day 8, 15 and 22

Population: Analysis population for this outcome measure included those participants who met acceptance criteria for Ctrough. Here 'number analyzed' signifies number of participants evaluable for each specified row.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 82.244 nanogram per milliliterGeometric Coefficient of Variation 22
Talazoparib: Normal Hepatic FunctionPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 222.624 nanogram per milliliterGeometric Coefficient of Variation 28
Talazoparib: Normal Hepatic FunctionPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 152.857 nanogram per milliliterGeometric Coefficient of Variation 39
Talazoparib: Mild Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 84.807 nanogram per milliliterGeometric Coefficient of Variation 93
Talazoparib: Mild Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 223.699 nanogram per milliliterGeometric Coefficient of Variation 197
Talazoparib: Mild Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 15NA nanogram per milliliter
Talazoparib: Moderate Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 152.909 nanogram per milliliterGeometric Coefficient of Variation 3
Talazoparib: Moderate Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 83.788 nanogram per milliliterGeometric Coefficient of Variation 80
Talazoparib: Moderate Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 223.553 nanogram per milliliterGeometric Coefficient of Variation 8
Talazoparib: Severe Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 83.329 nanogram per milliliterGeometric Coefficient of Variation 57
Talazoparib: Severe Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 22NA nanogram per milliliter
Talazoparib: Severe Hepatic ImpairmentPlasma Trough Concentration (Ctrough) of Talazoparib on Day 8, 15 and 22Day 154.208 nanogram per milliliterGeometric Coefficient of Variation 86
Secondary

Renal Clearance (CLr) of Talazoparib on Day 22

Renal clearance was calculated as cumulative amount of drug excreted in urine during the 24 hours dosing interval (Ae) divided by area under the plasma concentration time-curve from time zero to 24 hours post dose (AUC0-24).

Time frame: Ae: Post-dose at any time between 0 to 12, 12 to 24 hrs on Day 22; AUC0-24: Pre-dose (24 hrs +/- 60 minutes from previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, any time between 8 to12, 24 hrs post-dose on Day 22

Population: PK evaluable analysis population was analyzed. Here, Overall Number of Participants Analyzed =participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionRenal Clearance (CLr) of Talazoparib on Day 221.993 liters per hourGeometric Coefficient of Variation 57
Talazoparib: Mild Hepatic ImpairmentRenal Clearance (CLr) of Talazoparib on Day 221.449 liters per hourGeometric Coefficient of Variation 92
Talazoparib: Moderate Hepatic ImpairmentRenal Clearance (CLr) of Talazoparib on Day 221.510 liters per hourGeometric Coefficient of Variation 39
Talazoparib: Severe Hepatic ImpairmentRenal Clearance (CLr) of Talazoparib on Day 22NA liters per hour
Secondary

Time to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 1

Tmax was defined as the time to reach maximum observed plasma concentration of talazoparib.

Time frame: Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (MEDIAN)
Talazoparib: Normal Hepatic FunctionTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 11.00 hour
Talazoparib: Mild Hepatic ImpairmentTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 11.51 hour
Talazoparib: Moderate Hepatic ImpairmentTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 10.55 hour
Talazoparib: Severe Hepatic ImpairmentTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 11.00 hour
Secondary

Time to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 22

Tmax was defined as the time to reach maximum observed plasma concentration of talazoparib.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: PK evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (MEDIAN)
Talazoparib: Normal Hepatic FunctionTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 221.50 hour
Talazoparib: Mild Hepatic ImpairmentTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 222.13 hour
Talazoparib: Moderate Hepatic ImpairmentTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 221.05 hour
Talazoparib: Severe Hepatic ImpairmentTime to Reach Maximum Observed Plasma Concentration (Tmax) of Talazoparib on Day 22NA hour
Secondary

Unbound Apparent Clearance (CLu/F) of PlasmaTalazoparib on Day 22

Clearance of unbound talazoparib is a measure of the rate at which unbound talazoparib is metabolized or eliminated by normal biological processes.

Time frame: Pre-dose (24 hours +/- 60 minutes from the previous dose on Day 21 but within 60 minutes prior to next dose), 0.5, 1, 2, 4, 6, anytime from 8 to 12 and 24 hours post-dose on Day 22

Population: PK evaluable analysis population included all enrolled participants who completed Day 22 visit, missed less than 5 consecutive doses, received at least 10 consecutive days of 0.5 mg talazoparib daily dose immediately preceding Day 22 visit without dose interruption, not vomited talazoparib dose on Day 1 and last day of dose, at least 85% of total plasma PK samples collection was reported and provided at least 1 of talazoparib PK parameters of primary interest from Day 22 visit.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionUnbound Apparent Clearance (CLu/F) of PlasmaTalazoparib on Day 2216.57 liter per hourGeometric Coefficient of Variation 11
Talazoparib: Mild Hepatic ImpairmentUnbound Apparent Clearance (CLu/F) of PlasmaTalazoparib on Day 2211.09 liter per hourGeometric Coefficient of Variation 84
Talazoparib: Moderate Hepatic ImpairmentUnbound Apparent Clearance (CLu/F) of PlasmaTalazoparib on Day 2214.92 liter per hourGeometric Coefficient of Variation 35
Talazoparib: Severe Hepatic ImpairmentUnbound Apparent Clearance (CLu/F) of PlasmaTalazoparib on Day 22NA liter per hour
Secondary

Unbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 1

AUC0-24u for unbound talazoparib was defined as the area under the free plasma concentration time curve from time 0 to 24 hours post-dose. AUC0-24u = fu\*AUC0-24.

Time frame: Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 16.388 nanogram*hour per milliliterGeometric Coefficient of Variation 42
Talazoparib: Mild Hepatic ImpairmentUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 17.569 nanogram*hour per milliliterGeometric Coefficient of Variation 35
Talazoparib: Moderate Hepatic ImpairmentUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 16.922 nanogram*hour per milliliterGeometric Coefficient of Variation 14
Talazoparib: Severe Hepatic ImpairmentUnbound Area Under the Free Plasma Concentration Time Curve From Zero to 24 Hours (AUC0-24u) of Talazoparib on Day 17.528 nanogram*hour per milliliterGeometric Coefficient of Variation 51
Comparison: AUC0-24u was natural log-transformed and analyzed using ANOVA model with hepatic function group as a fixed effect.90% CI: [83.81, 167.47]
Comparison: AUC0-24u was natural log-transformed and analyzed using ANOVA model with hepatic function group as a fixed effect.90% CI: [73.25, 160.3]
Comparison: AUC0-24u was natural log-transformed and analyzed using ANOVA model with hepatic function group as a fixed effect.90% CI: [85.29, 162.83]
Secondary

Unbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 1

Cmaxu was defined as the maximum observed plasma concentration for unbound talazoparib. Cmaxu = fu\*Cmax

Time frame: Pre-dose (within 60 minutes prior to dose), 0.5, 1, 2, 4, 6, anytime between 8 to 12 and 24 hours post-dose on Day 1

Population: PK parameter analysis population included all enrolled participants who received at least 1 dose of talazoparib and had at least 1 of the talazoparib PK parameters. Here, Overall Number of Participants Analyzed signifies participants evaluable for this outcome measure.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Talazoparib: Normal Hepatic FunctionUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 10.8823 nanogram per milliliterGeometric Coefficient of Variation 76
Talazoparib: Mild Hepatic ImpairmentUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 10.8345 nanogram per milliliterGeometric Coefficient of Variation 35
Talazoparib: Moderate Hepatic ImpairmentUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 10.8131 nanogram per milliliterGeometric Coefficient of Variation 40
Talazoparib: Severe Hepatic ImpairmentUnbound Maximum Observed Plasma Concentration (Cmaxu) of Talazoparib on Day 10.7448 nanogram per milliliterGeometric Coefficient of Variation 78
Comparison: Cmaxu was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [51.69, 164.26]
Comparison: Cmaxu was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [56.74, 157.64]
Comparison: Cmaxu was natural log-transformed and analyzed using an ANOVA model with hepatic function group as a fixed effect.90% CI: [53.14, 134.1]
Other Pre-specified

Number of Participants With TEAEs Leading to Study Drug Discontinuation

An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; medically important events. Treatment-emergent were events between first dose of Talazoparib and up to 30 days after the last dose of Talazoparib (up to 52 days) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and non-SAEs. Number of participants with TEAEs leading to study drug discontinuation are reported.

Time frame: Baseline up to 30 days after last dose of study drug (up to 52 days)

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

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants With TEAEs Leading to Study Drug Discontinuation0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With TEAEs Leading to Study Drug Discontinuation2 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With TEAEs Leading to Study Drug Discontinuation2 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With TEAEs Leading to Study Drug Discontinuation12 Participants
Other Pre-specified

Number of Participants With TEAEs Resulting in Death

An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; medically important events. Treatment-emergent were events between first dose of Talazoparib and up to 30 days after the last dose of Talazoparib (up to 52 days) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and non-SAEs. Number of participants with TEAEs resulting in death are reported.

Time frame: Baseline up to 30 days after last dose of study drug (up to 52 days)

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

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants With TEAEs Resulting in Death0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With TEAEs Resulting in Death0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With TEAEs Resulting in Death1 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With TEAEs Resulting in Death7 Participants
Other Pre-specified

Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence in a participant who received investigational product without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly; medically important events. TEAEs were events between first dose of Talazoparib and up to 30 days after the last dose of Talazoparib (up to 52 days) that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAEs and all non-SAEs.

Time frame: Baseline up to 30 days after last dose of study drug (up to 52 days)

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

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)TEAEs6 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)SAEs1 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)SAEs3 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)TEAEs8 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)TEAEs3 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)SAEs2 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)TEAEs14 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)SAEs13 Participants
Other Pre-specified

Number of Participants With Treatment Emergent Treatment Related Adverse Events and SAEs

A treatment-related adverse event was any untoward medical occurrence attributed to talazoparib in a participant who received talazoparib. A treatment-related serious adverse event was a treatment-related adverse event resulting in any of the following outcomes or deemed significant for any other reason: death; life-threatening experience (immediate risk of dying); initial or prolonged inpatient hospitalization; persistent or significant disability/incapacity; Congenital anomaly. Relatedness to talazoparib was assessed by the investigator.

Time frame: Baseline up to 30 days after last dose of study drug (up to 52 days)

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

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Talazoparib: Normal Hepatic FunctionNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsAEs4 Participants
Talazoparib: Normal Hepatic FunctionNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsSAEs0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsSAEs0 Participants
Talazoparib: Mild Hepatic ImpairmentNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsAEs3 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsAEs0 Participants
Talazoparib: Moderate Hepatic ImpairmentNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsSAEs0 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsAEs2 Participants
Talazoparib: Severe Hepatic ImpairmentNumber of Participants With Treatment Emergent Treatment Related Adverse Events and SAEsSAEs0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026