Key clinical point: The prespecified second interim analysis of the OlympiA trial revealed a significant improvement in overall survival (OS) with adjuvant olaparib vs placebo in patients with pathogenic variants in BRCA1 or BRCA2 ( gBRCA1/2pv) and high-risk, human epidermal growth factor receptor 2-negative (HER2−), early breast cancer (BC).
Major finding: After a median follow-up of 3.5 years, OS improved significantly (hazard ratio 0.68; P = .009) and improvement in 4-year invasive disease-free survival was maintained (82.7% vs 75.4%) in the olaparib vs placebo group. No new safety signals were identified.
Study details: Findings are from the double-blind, phase 3, OlympiA study including 1836 patients with gBRCA1/2pv-associated high-risk, HER2−, early BC who were randomly assigned to receive olaparib or placebo in the adjuvant setting.
Disclosures: This work was supported by the US National Institutes of Health. Some authors declared receiving research funding, honoraria, consulting fees, compensation, accommodations and travel expenses, and royalties from and having other ties with several sources.
Source: Geyer CE Jr et al. Overall survival in the OlympiA phase III trial of adjuvant olaparib in patients with germline pathogenic variants in BRCA1/2 and high risk, early breast cancer. Ann Oncol. 2022 (Oct 10). Doi: 10.1016/j.annonc.2022.09.159