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Medical writer: Christy HC CHEUNG, BSc | Last updated: 24th January 2020 | In: Chemotherapy, Gynaecological Cancer, Oncology, Targeted Therapies
Article Keywords
AstraZeneca, Avastin, AZ, bevacizumab, BRCA, chemotherapy, gBRCAm, Genentech, germline BRCA-mutated, HRD, Lynparza, olaparib, PARP, PARPi, Roche
Adding olaparib to maintenance bevacizumab significantly improved the progression-free survival (PFS) in patients with advanced ovarian cancer who achieved a response to first-line platinum–taxane chemotherapy plus bevacizumab. The improvement in PFS with olaparib was independent of the BRCA-mutation status, as reported by Ray-Coquard et al. in The New England Journal of Medicine.1Ray-Coquard et al. N Engl J Med. 2019; doi:10.1056/NEJMoa1911361
“In patients with advanced ovarian cancer receiving first-line standard therapy including bevacizumab, the addition of maintenance olaparib provided a significant progression-free survival benefit, which was substantial in patients with homologous recombination deficiency (HRD)-positive tumours, including those without a BRCA mutation.” first author Dr Ray-Coquard, and colleagues wrote in The New England Journal of Medicine.
PAOLA-1
The double-blind phase 3 PAOLA-1 (NCT02477644) trial randomized 806 patients with advanced ovarian cancer 2:1 to either receive olaparib plus bevacizumab (N=537) or placebo plus bevacizumab (N=269).1Ray-Coquard et al. N Engl J Med. 2019; doi:10.1056/NEJMoa1911361 Eligible patients had a Federation of Gynecology and Obstetrics (FIGO) stage III or IV high-grade serous or endometrioid ovarian cancer, primary peritoneal cancer, or fallopian tube cancer. Patients with other non-mucinous epithelial ovarian cancers were only eligible if they were found to have germline BRCA1 or BRCA2 mutations. The primary efficacy endpoint was the PFS. Patients were stratified according to the tumour BRCA mutational status.
Results
At a median follow-up of 22.9 months, the median PFS was significantly longer for patients receiving maintenance bevacizumab plus olaparib than for patients receiving bevacizumab plus placebo, 22.1 vs 16.6 months, respectively (HR=0.59; 95% CI, 0.49-0.72; p<0.001). Subgroup analysis showed a similar PFS benefit in patients with tumours positive for homologous recombination deficiency (HRD) with BRCA mutations (37.2 months vs 17.1 months) and HRD-positive without BRCA mutations (28.1 months vs 16.6 months), both for the olaparib and placebo groups, respectively.
Safety
Adverse effects were consistent with the established safety profile of olaparib and bevacizumab, with higher percentage fatigue (53% vs 32%), nausea (53% vs 22%) and anaemia (41% vs 10%) in patients receiving olaparib and bevacizumab than placebo and bevacizumab.
Reference
- Ray-Coquard et al. N Engl J Med. 2019; doi:10.1056/NEJMoa191136
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Disclaimer
This article is not medical advice. Patients should seek personal assessment by a licenced specialist. Physicians are recommended to read the full publication(s) as cited in the article before making medical decisions. This article does not supersede nor replace the published article(s).
© Copyright 2018 MediPaper Medical Communications Ltd. – Olaparib plus Bevacizumab as Maintenance Therapy in Ovarian Cancer
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