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Phase II Trial of Talazoparib in BRCA1/2 Wild-type HER2-negative Breast Cancer and Other Solid Tumors

Advanced Breast Cancer Clinical Trial

Official title:
A Phase II Clinical Trial of the PARP Inhibitor Talazoparib in BRCA1 and BRCA2 Wild Type Patients With Advanced Triple Negative Breast Cancer and Homologous Recombination Deficiency or Advanced HER2 Negative Breast Cancer or Other Solid Tumors With a Mutation in Homologous Recombination Pathway Genes

Clinical Trial Summary

The aim of this single-arm phase 2 clinical trial is to evaluate the anti-cancer activity of Talazoparib (also known as BMN 673) in patients with advanced breast cancer with specific genetic or tumor genomic alterations. Patients with either triple-negative or HER2-negative breast cancer are eligible.

Clinical Trial Description

Talazoparib (BMN 673) is a novel, dual-mechanism PARP inhibitor that potently inhibits the PARP enzyme and effectively traps PARP on DNA. Talazoparib has shown promising single-agent anti-tumor efficacy in several BRCA1/2 mutation-associated advanced cancers. The efficacy of PARP inhibition in BRCA1/2 wild-type TNBC with homologous recombination (HR) defects and in breast tumors with mutations in other non-BRCA1/2 HR pathway genes is currently unknown. This phase 2 trial explores the activity of single agent talazoparib in BRCA1/2 wild-type BC patients using an optimal Simon two-stage design. Eligible subjects will be assigned to one of two parallel cohorts: 1) Cohort A: Subjects (n=29) with advanced TNBC with underlying HR defects as assessed by the HRD assay and, 2) Cohort B: Subjects (n=29) with advanced HER2-negative BC with a somatic or germline mutation in a non-BRCA1/2 HR pathway gene. Gene mutations of interest are: PTEN, PALB2, CHEK2, ATM, NBN, BARD1, BRIP1, RAD50, RAD51C, RAD51D, MRE11, ATR, Fanconi anemia complementation group of genes (FANCA, FANCC, FANCD2, FANCE, FANCF, FANCG, FANCL). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT02401347
Study type Interventional
Source Stanford University
Contact
Status Completed
Phase Phase 2
Start date August 2015
Completion date December 2022
View Details
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