A Phase II Pilot Study of Anti-PD-L1, Durvalumab, and a PARP Inhibitor, Olaparib in Patients With Metastatic Triple-Negative Breast Cancer With or Without Germline BRCA Mutation.

ABSTRACT:

Background

Immunostimulatory effects of PARP inhibitors could increase sensitivity to immune checkpoint inhibitors. The previous Phase II trial (MEDIOLA) reported clinical benefits of durvalumab and olaparib (D + O) in patients with germline BRCA-mutated (gBRCAm) HER2-negative metastatic breast cancer. Yet, the clinical activity of D + O in germline BRCA wild-type (gBRCAwt) triple-negative breast cancer (TNBC) remains unknown.

Methods

This single-arm Phase II study tested D + O in patients with metastatic TNBC. The primary objective was overall response rate (ORR). Secondary objectives were safety, disease control rate (DCR), progression-free survival (PFS) and overall survival (OS). Based on gBRCA status, patients were assigned to either gBRCAwt or gBRCAm cohort and were tr

SUBMITTER: Fujii T 

PROVIDER: S-EPMC12685463 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature