Study of Neoadjuvant PARP Inhibition Followed by Radical Prostatectomy in Patients With Unfavorable Intermediate-Risk or High-Risk Prostate Cancer With Select HRR Gene Alterations

NCT05498272 · Status: RECRUITING · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 32

Last updated 2026-01-23

No results posted yet for this study

Summary

Phase 2 open-label, single-arm clinical trial evaluating the efficacy and safety of neoadjuvant olaparib + LHRH agonist administered for 6 months prior to radical prostatectomy (RP) in men with unfavorable intermediate-risk or high-risk localized prostate cancer. All patients must have confirmed germline or somatic select HRR alterations. Germline and somatic mutation testing will be performed as part of commercially available CLIA assays and will be validated on a uniform platform centrally all patients retrospectively.

Eligible patients will receive treatment with olaparib + LHRH agonist. Following 6 months of therapy, patients will undergo RP with mandatory lymph node dissection. The lymph node dissection template will be at the discretion of the treating urologist. RP specimens will undergo pathology blinded independent central review. Following RP, patients will be followed for testosterone recovery and PSA progression.

Conditions

  • Prostate Cancer
  • BRCA1 Mutation
  • BRCA2 Mutation
  • Prostatic Adenocarcinoma
  • High-Risk Cancer

Interventions

DRUG

Olaparib

300 mg orally twice a day (D1-D30) for 6 Cycles (30 day Cycles)

DRUG

LHRH agonist

Total duration of therapy will be for 180 days with use of agent as per institutional standards

Sponsors & Collaborators

Principal Investigators

  • Rana R. McKay, MD · University of California, San Diego

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
MALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2023-02-01
Primary Completion
2026-03-31
Completion
2026-12-31
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT05498272 on ClinicalTrials.gov