- Conditions
- Castration-Resistant Prostatic Cancer
- Interventions
- Niraparib, Abiraterone Acetate, Prednisone, Placebo, New Formulation of Niraparib and Abiraterone Acetate (AA)
- Drug
- Lead sponsor
- Janssen Research & Development, LLC
- Industry
- Eligibility
- 18 Years and older · Male only
- Enrollment
- 765 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2027
- U.S. locations
- 47
- States / cities
- Homewood, Alabama • Phoenix, Arizona • Tucson, Arizona + 40 more
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced May 22, 2026, 4:45 AM EDT