Phase 3 Trial of Saruparib Added to Radiation and Hormone Therapy for Men with High-Risk Prostate Cancer and BRCA Mutation

What this Trial Is About

Researchers are evaluating the addition of Saruparib AZD5305 to standard radiation therapy RT and androgen deprivation therapy ADT for men with high-risk or very high-risk localized or locally advanced prostate cancer who have a BRCA1 or BRCA2 mutation. The study aims to determine if Saruparib improves metastases-free survival compared to placebo when added to these treatments. This phase 3 trial involves approximately 700 adult male participants. Participants are randomly assigned to receive either Saruparib or a matching placebo alongside physicians choice of ADT, with or without abiraterone and prednisoneprednisolone, depending on their cohort. Cohort A includes those receiving RT and continuous ADT, while Cohort B includes participants receiving RT, ADT, and abiraterone. Saruparib and placebo are administered orally. Treatment continues with close monitoring throughout the study. Participants will undergo scans including CT or MRI, bone scans, and PSMA-PET after their planned RT to confirm eligibility and monitor disease status. They will be followed for survival and disease progression for up to approximately 11 years. Researchers will assess metastasis-free survival, overall survival, prostate cancer-specific survival, biochemical recurrence, physical function, and urinary symptoms. Safety and drug levels will also be monitored. An independent committee will review safety and efficacy regularly throughout the trial.

A Study of Metastases Free Survival With Saruparib vs Placebo Added to a Standard RT/ADT in Men With High-risk Prostate Cancer With a BRCA Mutation