Talazoparib For Neoadjuvant Treatment Of Germline BRCA1/2 Mutation Patients With Early Human Epidermal Growth Factor Receptor 2 Negative Breast Cancer

Early Breast Cancer Clinical Trial

Official title:

A PHASE 2, NON RANDOMIZED, OPEN LABEL, SINGLE ARM, MULTI CENTER STUDY OF TALAZOPARIB FOR NEOADJUVANT TREATMENT OF GERMLINE BRCA1/2 MUTATION PATIENTS WITH EARLY HUMAN EPIDERMAL GROWTH FACTOR RECEPTOR 2 NEGATIVE BREAST CANCER

Clinical Trial Details — Status: Terminated

Administrative data

• NCT number: NCT03499353
• Other study ID #: C3441020
• Secondary ID: TALAZOPARIB NEOA
• Status: Terminated
• Phase: Phase 2
• Start date: August 27, 2018
• Est. completion date: September 23, 2020

Study information

• Verified date: October 2021
• Source: Pfizer
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A PHASE 2, NON RANDOMIZED, OPEN LABEL, SINGLE ARM, MULTI CENTER STUDY OF TALAZOPARIB FOR NEOADJUVANT TREATMENT OF GERMLINE BRCA1/2 MUTATION PATIENTS WITH EARLY HUMAN EPIDERMAL GROWTH FACTOR RECEPTOR 2 NEGATIVE BREAST CANCER

Description:

TALAZOPARIB (PARP INHIBITOR) FOR NEOADJUVANT TREATMENT OF GERMLINE BRCA1/2 MUTATION PATIENTS WITH EARLY HUMAN EPIDERMAL GROWTH FACTOR RECEPTOR 2 NEGATIVE BREAST CANCER. THIS IS A MONOTHERAPY TREATMENT FOR 24 WKS FOLLOWED BY SURGERY TO EVALUATE PATHOLOGICAL COMPLETE RESPONSE.

Recruitment information / eligibility

• Status: Terminated
• Enrollment: 61
• Est. completion date: September 23, 2020
• Est. primary completion date: September 23, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Germline BRCA 1/2 Mutation Positive

• Women and men at least 18 years of age or older.

• Histologically confirmed invasive adenocarcinoma of the breast

• HER2 negative breast cancer as defined by ASCO-CAP criteria

• Tumor greater than or equal toT1, N0-3

• No evidence of distant metastasis

• Adequate bone marrow, hepatic, and renal function

• ECOG performance status 0 or 1

Exclusion Criteria:

• Any other previous antitumor therapies for the current cancer event. Treatment for ductal carcinoma in situ (DCIS) is allowed; ie, surgery, hormonal therapy and radiation.

• Evidence of distant metastasis apparent prior to randomization

• Patients with inflammatory breast carcinoma

• Malignancy within the last 3 years, except: Stage 1 melanoma which does not require any further treatment after adequate surgical excision; adequately treated non melanoma skin cancer; Curatively treated in situ cancer of the cervix; Stage 1, Grade 1 endometrial carcinoma; or Adequately treated contralateral breast carcinoma which has been disease free for a year; Other solid tumors including lymphomas (without bone marrow involvement) curatively treated with no evidence of disease for 5 years.

• Previous or concomitant systemic anti cancer therapies used for the treatment of cancer in the last 3 years.

• Prior treatment with a PARP inhibitor in any disease setting

• Concomitant use of Strong P gp inhibitors or inducers or BCRP inhibitors

• Patients who are unwilling or unable to use a highly effective method of contraception as outlined in this protocol

• Major surgery within 14 days prior to study entry

• Known history of cardiac disease, for example : Myocardial infarction or symptomatic cardiac ischemia within 24 weeks before screening; Congestive heart failure New York Heart Association Class III or IV; History of clinically significant ventricular arrhythmias within one year prior to randomization; History of Mobitz II second degree or third degree heart block, uncontrolled hypertension.

• Active clinically significant infection

• Clinically significant bleeding diathesis or coagulopathy

• Non healing wound, ulcer or bone fracture

• Known hypersensitivity to any of the components of talazoparib

• Patients with myelodysplastic syndrome/acute myeloid leukemia

• Patients with uncontrolled seizures.

• Any evidence of other disease or any concomitant medical or psychiatric problems which in the opinion of the Investigator would prevent completion of treatment

Related Conditions & MeSH terms

• Breast Neoplasms
• Early Breast Cancer

Intervention

Drug:
• TALAZOPARIB
Talazoparib 1mg/day

Locations

Country	Name	City	State
United States	Texas Oncology - Allen	Allen	Texas
United States	St. Luke's Hematology Oncology Specialists	Allentown	Pennsylvania
United States	St. Luke's Hospital - Allentown Campus	Allentown	Pennsylvania
United States	Emory Saint Joseph's Hospital	Atlanta	Georgia
United States	Emory University Hospital	Atlanta	Georgia
United States	Emory University Hospital Midtown	Atlanta	Georgia
United States	Grady Health System	Atlanta	Georgia
United States	The Emory Clinic	Atlanta	Georgia
United States	Winship Cancer Institute	Atlanta	Georgia
United States	Rocky Mountain Cancer Centers	Aurora	Colorado
United States	Texas Oncology - Austin Midtown	Austin	Texas
United States	Texas Oncology - South Austin	Austin	Texas
United States	Texas Oncology-Austin Central	Austin	Texas
United States	Innovative Medical Research of South Florida, Inc	Aventura	Florida
United States	Summit Medical Group	Berkeley Heights	New Jersey
United States	St. Luke's Hematology Oncology Specialists	Bethlehem	Pennsylvania
United States	St. Luke's Hospital - Bethlehem Campus	Bethlehem	Pennsylvania
United States	Rocky Mountain Cancer Centers	Boulder	Colorado
United States	PMK Medical Group Inc., dba Ventura County Hematology Oncology Specialists	Camarillo	California
United States	Charleston Hematology Oncology Associates, PA	Charleston	South Carolina
United States	Virginia Oncology Associates	Chesapeake	Virginia
United States	Rush University Medical Center	Chicago	Illinois
United States	Rush University Medical Center, Professional Office Building Infusion Pharmacy	Chicago	Illinois
United States	St. Luke's Hospital - Miners Campus	Coaldale	Pennsylvania
United States	Rocky Mountain Cancer Centers	Colorado Springs	Colorado
United States	Texas Oncology-Baylor Charles A. Sammons Cancer Center	Dallas	Texas
United States	Texas Oncology-Denton South	Denton	Texas
United States	Rocky Mountain Cancer Centers	Denver	Colorado
United States	Rocky Mountain Cancer Centers	Denver	Colorado
United States	City of Hope (City of Hope National Medical Center, City of Hope Medical Center)	Duarte	California
United States	City of Hope Investigational Drug Services (IDS)	Duarte	California
United States	St Luke's Hospital - Anderson Campus	Easton	Pennsylvania
United States	St. Luke's Hospital - Anderson Campus	Easton	Pennsylvania
United States	Rocky Mountain Cancer Centers	Englewood	Colorado
United States	Highlands Oncology Group	Fayetteville	Arkansas
United States	Summit Medical Group PA	Florham Park	New Jersey
United States	Banner Gateway Medical Center	Gilbert	Arizona
United States	Banner MD Anderson Cancer Center	Gilbert	Arizona
United States	Glendale Adventist Medical Center	Glendale	California
United States	The Oncology Institute of Hope & Innovation	Glendale	California
United States	UPMC Hillman Cancer Center Mountainview Arnold Palmer Pavilion	Greensburg	Pennsylvania
United States	Virginia Oncology Associates	Hampton	Virginia
United States	The University of Texas MD Anderson Cancer Center	Houston	Texas
United States	The University of Texas MD Anderson Cancer Center	Houston	Texas
United States	U.T. MD Anderson Cancer Center	Houston	Texas
United States	U.T. MD Anderson Cancer Center, Investigational Pharmacy Services - Unit 376	Houston	Texas
United States	US Oncology Investigational Products Center (IPC)	Irving	Texas
United States	University of Mississippi Medical Center	Jackson	Mississippi
United States	Brig Center for Cancer Care and Survivorship	Knoxville	Tennessee
United States	Rocky Mountain Cancer Centers	Lakewood	Colorado
United States	Rocky Mountain Cancer Centers	Littleton	Colorado
United States	Rocky Mountain Cancer Centers	Lone Tree	Colorado
United States	The Oncology Institute of Hope & Innovation	Long Beach	California
United States	Rocky Mountain Cancer Centers	Longmont	Colorado
United States	University of Wisconsin Clinical Science Center	Madison	Wisconsin
United States	UW Health University Hospital - Pharmaceutical Research Center	Madison	Wisconsin
United States	Texas Oncology - McKinney	McKinney	Texas
United States	Baptist Cancer Center	Memphis	Tennessee
United States	UPMC Cancer Centers East Oxford Drive	Monroeville	Pennsylvania
United States	Virginia Oncology Associates	Newport News	Virginia
United States	Virginia Oncology Associates	Norfolk	Virginia
United States	Rush Oak Park Hospital	Oak Park	Illinois
United States	UC Irvine Health	Orange	California
United States	UC Irvine Medical Center	Orange	California
United States	PMK Medical Group Inc., dba Ventura County Hematology Oncology Specialists	Oxnard	California
United States	Rocky Mountain Cancer Centers	Parker	Colorado
United States	St. Luke's Hospital - Warren Campus	Phillipsburg	New Jersey
United States	St. Luke's Warren Physician Group	Phillipsburg	New Jersey
United States	Magee-Womens Hospital of UPMC	Pittsburgh	Pennsylvania
United States	UPMC Hillman Cancer Center	Pittsburgh	Pennsylvania
United States	UPMC Hillman Cancer Center North Hills at Passavant	Pittsburgh	Pennsylvania
United States	UPMC Hillman Cancer Center UPMC Passavant	Pittsburgh	Pennsylvania
United States	Northwest Cancer Specialists, P.C.	Portland	Oregon
United States	Northwest Cancer Specialists, P.C.	Portland	Oregon
United States	Rocky Mountain Cancer Centers	Pueblo	Colorado
United States	St. Luke's Hospital - Quakertown Campus	Quakertown	Pennsylvania
United States	Emad Ibrahim, MD, INC.	Redlands	California
United States	Highlands Oncology Group	Rogers	Arkansas
United States	Texas Oncology - Round Rock	Round Rock	Texas
United States	The Oncology Institute of Hope & Innovation	Santa Ana	California
United States	Avera Cancer Institute	Sioux Falls	South Dakota
United States	Avera Specialty Hospital	Sioux Falls	South Dakota
United States	Stanford Cancer Institute	Stanford	California
United States	Stanford Hospital and Clinics	Stanford	California
United States	Stanford Women's Cancer Center	Stanford	California
United States	St. Luke's Hospital - Monroe Campus	Stroudsburg	Pennsylvania
United States	Rocky Mountain Cancer Centers	Thornton	Colorado
United States	Northwest Cancer Specialists, P.C.	Tigard	Oregon
United States	UPMC Hillman Cancer Center Uniontown	Uniontown	Pennsylvania
United States	Northwest Cancer Specialists, P.C.	Vancouver	Washington
United States	Northwest Cancer Specialists, P.C.	Vancouver	Washington
United States	PMK Medical Group Inc., dba Ventura County Hematology Oncology Specialists	Ventura	California
United States	Virginia Oncology Associates	Virginia Beach	Virginia
United States	UPMC Hillman Cancer Center Washington	Washington	Pennsylvania
United States	The Oncology Institute of Hope & Innovation	West Covina	California
United States	ICRI	Whittier	California
United States	The Oncology Institute of Hope & Innovation	Whittier	California

Sponsors (1)

Lead Sponsor	Collaborator
Pfizer

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Percentage of Participants Achieving Pathological Complete Response (pCR) as Per Independent Central Review (ICR) in Evaluable Analysis Set as Per ICR With 80% Confidence Interval (CI)	pCR was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (ie, ypT0/Tis ypN0 in the current American Joint Committee on Cancer [AJCC] staging system). pCR rate by ICR was defined as the percentage of participants achieving pCR by ICR after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the evaluable population (Evaluable Analysis Set as per ICR). The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Primary	Percentage of Participants Achieving pCR as Per ICR in Evaluable Analysis Set as Per ICR With 95% CI	pCR was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (ie, ypT0/Tis ypN0 in the current AJCC staging system). pCR rate by ICR was defined as the percentage of participants achieving pCR by ICR after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the evaluable population (Evaluable Analysis Set as per ICR). The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR as Per ICR in Intention-to-Treat (ITT) Analysis Set With 80% CI	pCR was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (ie, ypT0/Tis ypN0 in the current AJCC staging system). pCR rate by ICR in ITT Analysis Set was defined as the percentage of participants achieving pCR by ICR after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the ITT Analysis Set. The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR as Per ICR in ITT Analysis Set With 95% CI	pCR was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (ie, ypT0/Tis ypN0 in the current AJCC staging system). pCR rate by ICR in ITT Analysis Set was defined as the percentage of participants achieving pCR by ICR after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the ITT Analysis Set. The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR as Per Investigator in Evaluable Analysis Set as Per Investigator	pCR was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (ie, ypT0/Tis ypN0 in the current AJCC staging system). pCR rate by investigator was defined as the percentage of participants achieving pCR by investigator review after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the evaluable population (Evaluable Analysis Set as per Investigator). The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR as Per Investigator in ITT Analysis Set	pCR was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen and all sampled regional lymph nodes following completion of neoadjuvant systemic therapy (ie, ypT0/Tis ypN0 in the current AJCC staging system). pCR rate by investigator in ITT Analysis Set was defined as the percentage of participants achieving pCR by investigator review after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the ITT Analysis Set. The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR in Breast Only as Per Investigator in Evaluable Analysis Set as Per Investigator	pCR in breast was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen following completion of neoadjuvant therapy with talazoparib. pCR rate in breast by investigator was defined as the percentage of participants achieving pCR in breast by investigator review after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the evaluable population (Evaluable Analysis Set as per Investigator). The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR in Breast Only as Per Investigator in ITT Analysis Set	pCR in breast was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen following completion of neoadjuvant therapy with talazoparib. pCR rate in breast by investigator in ITT Analysis Set was defined as the percentage of participants achieving pCR in breast by investigator review after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the ITT Analysis Set. The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR in Breast Only as Per ICR in Evaluable Analysis Set as Per ICR	pCR in breast was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen following completion of neoadjuvant therapy with talazoparib. pCR rate in breast by ICR was defined as the percentage of participants achieving pCR in breast by ICR after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the evaluable population (Evaluable Analysis Set as per ICR). The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants Achieving pCR in Breast Only as Per ICR in ITT Analysis Set	pCR in breast was defined as the absence of residual invasive cancer in the breast and axillary lymph nodes on hematoxylin and eosin evaluation of the complete resected breast specimen following completion of neoadjuvant therapy with talazoparib. pCR rate in breast by ICR in ITT Analysis Set was defined as the percentage of participants achieving pCR in breast by ICR after talazoparib treatment for 24 weeks, followed by surgery, among all participants in the ITT Analysis Set. The exact CI was calculated using the Blaker's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants With Residual Cander Burden (RCB) as Per ICR in Evaluable Analysis Set as Per ICR	The RCB is a continuous index derived from the following: primary tumor dimensions; cellularity of the tumor bed; axillary nodal burden. Residual cancer burden by ICR is reported as a categorical variable with four classes (categories): RCB 0 (pCR), I (minimal RCB), II (moderate RCB), III (extensive RCB). Participants who had progressive disease or was unable to be assessed for RCB due to missing required axillary specimen were counted in the "Missing" category. The simultaneous exact CI was calculated using Goodman's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Percentage of Participants With RCB as Per ICR in ITT Analysis Set	The RCB is a continuous index derived from the following: primary tumor dimensions; cellularity of the tumor bed; axillary nodal burden. Residual cancer burden by ICR is reported as a categorical variable with four classes (categories): RCB 0 (pCR), I (minimal RCB), II (moderate RCB), III (extensive RCB). Participants who had progressive disease or was unable to be assessed for RCB due to missing required axillary specimen were counted in the "Missing" category. The simultaneous exact CI was calculated using Goodman's method.	Date of surgery (maximum of approximately 8 months post-baseline) (assessed within a maximum of 6 weeks of last dose of talazoparib)
Secondary	Probability of Being Event-Free at 3 Years in Evaluable Analysis Set	Event-Free Survival (EFS) is defined as the time from surgery date to first documentation of local or distant recurrence or death or initiation of antineoplastic therapy before documentation of first relapse. Participants discontinuing study before documentation of first relapse or death, but after surgery were censored observations for EFS. EFS at 3 years is defined as the probability of being event free at 3 years after surgery using Kaplan Meier methods.	3 years after surgery
Secondary	Probability of Being Alive at 3 Years in Evaluable Analysis Set	Overall Survival (OS) is defined as the time from first dose of talazoparib to death due to any cause. Participants not known to have died at the time of the analysis were right censored on the date they were last known to be alive before the analysis data cutoff date. OS at 3 years is defined as the probability of being alive at 3 years after first dose of talazoparib using Kaplan Meier methods.	3 years after first dose of talazoparib
Secondary	Probability of Being Alive at 3 Years in ITT Analysis Set	OS is defined as the time from first dose of talazoparib to death due to any cause. Participants not known to have died at the time of the analysis were right censored on the date they were last known to be alive before the analysis data cutoff date. OS at 3 years is defined as the probability of being alive at 3 years after first dose of talazoparib using Kaplan Meier methods.	3 years after first dose of talazoparib
Secondary	Number of Participants With Treatment-Emergent Adverse Events (TEAEs)	An adverse event (AE) was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with study treatment. TEAEs=AEs that occurred between first dose of study drug and up to 28 days after the last dose that were absent before treatment or worsened relative to pretreatment state. Grades of AEs were defined by National Cancer Institute Common Toxicity Criteria for Adverse Events (NCI CTCAE) version 4.03. Grade 1=asymptomatic/mild symptoms, clinical or diagnostic observations only, intervention not indicated; Grade 2=minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental activity of daily living (ADL); Grade 3=severe or medically significant but not immediately life-threatening, hospitalization of prolongation of hospitalization indicated; disabling limiting self-care ADL; Grade 4=events with life-threatening consequences, urgent intervention indicated; Grade 5= death related to AE.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With Serious Adverse Events (SAEs)	An SAE was any untoward medical occurrence at any dose that resulted in death; was life threatening; required inpatient hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity; resulted in congenital anomaly/birth defect. Treatment-related SAEs were determined by the investigator.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With TEAEs Leading to Permanent Discontinuation of Study Drug	An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. TEAEs were AEs that occurred between first dose of study drug and up to 28 days after the last dose that were absent before treatment or that worsened relative to pretreatment state.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With TEAEs Leading to Temporary Discontinuation of Study Drug	An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. TEAEs were AEs that occurred between first dose of study drug and up to 28 days after the last dose that were absent before treatment or that worsened relative to pretreatment state.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With TEAEs Leading to Dose Reduction of Study Drug	An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship with the study treatment. TEAEs were AEs that occurred between first dose of study drug and up to 28 days after the last dose that were absent before treatment or that worsened relative to pretreatment state.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With Laboratory Abnormalities	Laboratory parameters included hematology, serum chemistry, urinalysis and coagulation. Grades of laboratory abnormalities were defined according to NCI CTCAE version 4.03. Participants with laboratory test abnormalities meeting specified criteria (>upper limit of normal [ULN] or	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With Hematology Laboratory Results From Grade <=2 at Baseline to Grade 3 or 4 Post-Baseline	Hematology laboratory parameters included hematocrit, hemoglobin, mean corpuscular volume, red blood cells, platelets, white blood cells with differential (neutrophils, lymphocytes, monocytes, eosinophils, basophils). Grades of lab results were defined by NCI CTCAE version 4.03. Grade 1(mild)=asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; Grade 2(moderate)=minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental activity of daily living (ADL); Grade 3=severe or medically significant but not immediately life-threatening, hospitalization or prolongation of hospitalization indicated; disabling limiting self-care ADL; Grade 4=life-threatening consequences, urgent intervention indicated; Grade 5=death related to AE. This outcome measure was based only on laboratory data. As Grade 4 anemia cannot be assessed based only on laboratory data, it was not applicable for analysis in this outcome measure.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Number of Participants With Chemistry Laboratory Results From Grade <=2 at Baseline to Grade 3 or 4 Post-Baseline	Chemistry laboratory parameters included albumin, total protein, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, total bilirubin, blood urea nitrogen, creatinine, non-fasting glucose, bicarbonate, calcium, chloride, magnesium, phosphate, potassium, sodium, and lactate dehydrogenase. Grades of laboratory results were defined by NCI CTCAE version 4.03. Grade 1 (Mild) = asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; Grade 2 (Moderate ) = minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental activity of daily living (ADL); Grade 3 = severe or medically significant but not immediately life-threatening, hospitalization of prolongation of hospitalization indicated; disabling limiting self-care ADL; Grade 4 = events with life-threatening consequences, urgent intervention indicated; Grade 5 = death related to AE.	Baseline to 28 days after the last dose of talazoparib (maximum of approximately 8 months)
Secondary	Trough Plasma Concentration (Ctrough) of Talazoparib in Cycles 2, 3 and 4 in PK Analysis Set		Pre-dose on Day 1 of Cycles 2, 3, 4
Secondary	Within-Participant Average Ctrough of Talazoparib at Steady State in PK Analysis Set	Within-participant average Ctrough of talazoparib at steady state for each participant was defined as the average (mean) value of the steady state Ctrough values (Cycle 2 Day 1, Cycle 3 Day 1 and Cycle 4 Day 1 trough concentrations) for each individual participant.	Pre-dose on Day 1 of Cycles 2, 3, 4
Secondary	Ctrough of Talazoparib in Cycles 2, 3 and 4 in Dose-Compliant PK Analysis Set		Pre-dose on Day 1 of Cycles 2, 3, 4
Secondary	Within-Participant Average Ctrough of Talazoparib at Steady State in Dose-Compliant PK Analysis Set	Within-participant average Ctrough of talazoparib at steady state for each participant was defined as the average (mean) value of the steady state Ctrough values (Cycle 2 Day 1, Cycle 3 Day 1 and Cycle 4 Day 1 trough concentrations) for each individual participant.	Pre-dosing on Day 1 of Cycles 2, 3, 4
Secondary	Number of Participants Who Achieved Definitive Deterioration in Global Health Status (GHS)/Quality of Life (QoL) Per European Organization For Research And Treatment Of Cancer Quality Of Life Questionnaire (EORTC QLQ-30)	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes (PROs), consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the GHS/QoL scale, participants rated their overall health and quality of life within the past week. A 10 point change from baseline was used to indicate clinically meaningful change. Definitive deterioration was defined as =10 point decrease from baseline without any subsequent <10 point decrease.	Baseline to End of Treatment visit (assessed for maximum of 33 weeks)
Secondary	Kaplan-Meier Estimate of Time to Definitive Deterioration in GHS/QoL Per EORTC QLQ-30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the GHS/QoL scale, participants rated their overall health and quality of life within the past week. A 10 point change from baseline was used to indicate clinically meaningful change. Definitive deterioration was defined as =10 point decrease from baseline without any subsequent <10 point decrease.	Baseline to End of Treatment visit (assessed for maximum of 33 weeks)
Secondary	Probability of Not Achieving Definitive Deterioration in GHS/QoL Per EORTC QLQ-C30 at 3 and 6 Months	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all to 4=very much).; For the GHS/QoL scale, participants rated their overall health and quality of life within the past week. A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best. A 10 point change from baseline was used to indicate clinically meaningful change. Definitive deterioration was defined as =10 point decrease from baseline without any subsequent <10 point decrease.; Probability of not achieving definitive deterioration (being event-free) at specified time points (3 and 6 months post-baseline) using the Kaplan Meier method were reported.	3 months and 6 months post-baseline
Secondary	Number of Participants Who Achieved Definitive Deterioration in Nausea and Vomiting Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. A 10 point change from baseline was used to indicate clinically meaningful change. Definitive deterioration was defined as =10 point increase from baseline without any subsequent <10 point increase.	Baseline to End of Treatment visit (assessed for maximum of 33 weeks)
Secondary	Kaplan-Meier Estimate of Time to Definitive Deterioration in Nausea and Vomiting Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. A 10 point change from baseline was used to indicate clinically meaningful change. Definitive deterioration was defined as =10 point increase from baseline without any subsequent <10 point increase.	Baseline to End of Treatment visit (assessed for maximum of 33 weeks)
Secondary	Probability of Not Achieving Definitive Deterioration in Nausea and Vomiting Symptoms Per EORTC QLQ-C30 at 3 and 6 Months	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, with 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores (1=very poor to 7=excellent); other items have 4 possible scores (1=not at all to 4=very much).; For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. A linear transformation was applied to raw scores so that transformed scores lie between 0 to 100, with 0 being the best and 100 being the worst for this symptom scale. A 10 point change from baseline was used to indicate clinically meaningful change. Definitive deterioration was defined as=10 point increase from baseline without any subsequent <10 point increase. Probability of not achieving definitive deterioration (being event-free) at specified time points (3 and 6 months post-baseline) using Kaplan Meier method were reported.	3 months and 6 months post-baseline
Secondary	Change From Baseline in Global QoL Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the GHS/QoL scale, participants rated their overall health and quality of life within the past week. Negative change from baseline indicates deterioration in GHS/QoL and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Physical Functioning Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the physical functioning scale, participants self-rated levels of difficulty in doing strenuous activities, taking a walk, how much they needed to stay in bed or a chair, or needed help with eating, dressing, bathing, using the toilet. Negative change from baseline indicates deterioration in physical functioning and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Role Functioning Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the role functioning scale, participants self-rated how much they were limited in doing work or daily activities, or in pursuing hobbies or other leisure time activities during the past week. Negative change from baseline values indicates deterioration in role functioning and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Emotional Functioning Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the emotional functioning scale, participants self-rated how much they felt tense, worried, irritable or depressed during the past week. Negative change from baseline values indicates deterioration in emotional functioning and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Cognitive Functioning Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the cognitive functioning scale, participants self-rated the extent of difficulty in concentrating on things or remembering things during the past week. Negative change from baseline values indicates deterioration in cognitive functioning and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Social Functioning Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the social functioning scale, participants self-rated how much their physical condition or medical treatment interfered with their family life and social activities during the past week. Negative change from baseline values indicates deterioration in social functioning and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Fatigue Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the fatigue symptoms scale, participants self-rated how much they had felt weak, tired or needed to rest during the past week. Negative change from baseline values indicates improvement of fatigue symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Nausea and Vomiting Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. Negative change from baseline values indicates improvement of nausea and vomiting symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Pain Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the pain symptoms scale, participants self-rated the extent of pain and how much the pain interfered with daily activities during the past week. Negative change from baseline values indicates improvement of pain symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Dyspnoea Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the dyspnoea symptoms scale, participants self-rated the intensity of shortness of breath during the past week. Negative change from baseline values indicates improvement of dyspnoea symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Insomnia Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the insomnia symptoms scale, participants self-rated the intensity of shortness of breath during the past week. Negative change from baseline values indicates improvement of insomnia symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Appetite Loss Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the appetite loss symptoms scale, participants self-rated the extent of lack of appetite during the past week. Negative change from baseline values indicates improvement of appetite loss symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Constipation Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the constipation symptoms scale, participants self-rated the intensity of constipation during the past week. Negative change from baseline values indicates improvement of constipation symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Diarrhea Symptoms Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the diarrhea symptoms scale, participants self-rated the intensity of diarrhea during the past week. Negative change from baseline values indicates improvement of diarrhea symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Financial Difficulties Per EORTC QLQ-C30	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the symptom scale of financial difficulties, participants self-rated how much their physical condition or medical treatment caused financial difficulties. Negative change from baseline values indicates improvement of financial difficulties and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Body Image Per EORTC QLQ Breast Cancer Quality of Life Questionnaire (EORTC QLQ-BR23)	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the functional scale of body image, participants self-rated how much they felt physically less attractive or less feminine, difficult to look at themselves naked, or dissatisfied with their body during the past week. Negative change from baseline indicates worsening of self-rated body image and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Sexual Functioning Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the sexual functioning scale, participants self-rated to what extent they were interested in sex and were sexually active (with or without intercourse) during the past 4 weeks. Negative change from baseline values indicates worsening of sexual functioning and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Sexual Enjoyment Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the functional scale of sexual enjoyment, participants self-rated to what extent sex was enjoyable for them during the past 4 weeks. Negative change from baseline values indicates worsening of sexual enjoyment and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Future Perspective Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the functional scale of future perspective, participants self-rated how much they were worried about their health in the future. Negative change from baseline values indicates worsening of future perspective and positive change indicates improvement.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Systemic Therapy Side Effects Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the systemic therapy side effects scale, participants self-rated the intensity of symptoms of dry mouth, unusual taste, pain and irritation of eyes, hair loss, feeling ill or unwell, hot flushes and headaches during the past week. Negative change from baseline= improvement of these side effects, positive change = deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Breast Symptoms Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the breast symptoms scale, participants self-rated how much they had pain or skin problems (e.g. itchy, dry, flaky) on or in the area of affected breast, and how much this area was swollen or oversensitive during the past week. Negative change from baseline indicates improvement of breast symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Arm Symptoms Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the arm symptoms scale, participants self-rated how much they had pain in the arm or shoulder, how much the arm or hand was swollen, and difficulty in raising the arm or moving it sideways. Negative change from baseline indicates improvement of arm symptoms and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Change From Baseline in Upset by Hair Loss Per EORTC QLQ-BR23	EORTC-QLQ-BR23 is a 23-item breast cancer module developed as a supplement for the EORTC-QLQ-C30 to assess the quality of life of participants with breast cancer, consisting of 2 functional scales, 3 symptoms scales, and 3 single-item scales. Each scale has 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for functional scales, and 0 being the best and 100 being the worst for symptoms scales.; For the upset by hair loss scale, participants self-rated how upset they were due to loss of hair during the past week. Negative change from baseline values indicates improvement of upset by hair loss and positive change indicates deterioration.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Number of Participants With Deterioration in Nausea/Vomiting Symptoms	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales. For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. A 10 point change from baseline was used to indicate clinically meaningful change. Deterioration in nausea and vomiting symptoms was defined as a 10 point or more increase from baseline for that specific time point.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Number of Participants With Improvement in Nausea/Vomiting Symptoms	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all, 2=a little, 3=quite a bit, 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales. For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. A 10 point change from baseline was used to indicate clinically meaningful change. Improvement in nausea and vomiting symptoms was defined as a 10 point or more decrease from baseline for that specific time point.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Number of Participants With No Change in Nausea/Vomiting Symptoms	EORTC QLQ-C30 is a 30-item cancer-specific instrument that assesses participant reported outcomes, consisting of 5 functional scales, 3 symptoms scales, a GHS/QoL scale, and 6 single-item scales. The GHS/QoL scale has 7 possible scores of responses (1=very poor to 7=excellent). All other items have 4 possible scores (1=not at all to 4=very much). A linear transformation was applied to the raw scores so that all transformed scores lie between 0 to 100, with 0 being the worst and 100 being the best for GHS/QoL and functional scales, and 0 being the best and 100 being the worst for symptoms scales. For the nausea and vomiting symptoms scale, participants self-rated how much they had felt nauseated and/or vomited during the past week. A 10 point change from baseline was used to indicate clinically meaningful change. No change in nausea/vomiting symptoms=having neither deterioration (=10 point increase from baseline) nor improvement (=10 point decrease from baseline) for the time point.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)
Secondary	Number of Participants With Missed Expected Menstrual Periods Per Patient Reported Outcomes Version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE)	Missed expected menstrual period was assessed electronically using the PRO CTCAE questionnaire, a PRO measure developed to evaluate symptomatic toxicity in patients on cancer clinical trials. This objective captures the concept of fertility preservation through PRO, since there is a possible fertility sparing effect of talazoparib versus chemotherapy.	Baseline, Cycle 1 Day 15, Cycle 2 Day 1, Cycle 2 Day 15, Day 1 of Cycles 3-6, End of Treatment visit (maximum of 33 weeks) and Post-surgical follow-up visit (maximum of 41 weeks)

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