Last updated on September 2020

A Study of Niraparib in Combination With Abiraterone Acetate and Prednisone Versus Abiraterone Acetate and Prednisone for Treatment of Participants With Metastatic Prostate Cancer


Brief description of study

The purpose of this study is to evaluate the effectiveness of niraparib in combination with abiraterone acetate plus prednisone (AAP) compared to AAP plus placebo.

Detailed Study Description

This study will assess efficacy and safety of niraparib in combination with AAP for the treatment of participants with metastatic castration resistant prostate cancer. Niraparib is an orally available, highly selective poly (adenosine diphosphate [ADP]-ribose) polymerase (PARP) inhibitor, with potent activity against PARP-1 and PARP-2 deoxyribonucleic acid (DNA)-repair polymerases. AA is a pro-drug of abiraterone and selectively inhibits the enzyme 17 alpha-hydroxylase/C17,20-lyase (CYP17), which is found in the testes and adrenals, as well as in prostate tissues and tumors. In participants with metastatic prostate cancer, DNA-repair anomalies are identified in approximately 15 percent (%) to 20% of tumors. The study will consist of 4 phases: a prescreening phase for biomarker evaluation only, a screening phase, a treatment phase, and a follow up phase. During the prescreening phase participants will be evaluated for homologous recombination repair (HRR) gene alteration status and then will be assigned to one of the 2 cohorts based on their biomarker status. Treatment will be administered daily and is planned to be continuous until disease progression, unacceptable toxicity, death, or the sponsor terminates the study. Efficacy, pharmacokinetics, biomarkers, participants reported outcomes and safety will be assessed. The total duration of study will be approximately 66 months.

Clinical Study Identifier: NCT03748641

Find a site near you

Start Over

Recruitment Status: Open


Brief Description Eligibility Contact Research Team


Volunteer Sign-up

Sign up for our FREE service to receive email notifications when clinical trials are posted in the medical category of interest to you.