articleJournal of Clinical OncologyApr 20, 2010BRONZE OA

Poly(ADP)-Ribose Polymerase Inhibition: Frequent Durable Responses in BRCA Carrier Ovarian Cancer Correlating With Platinum-Free Interval

Institute of Cancer Research · Breast Cancer Research Foundation · +9 more institutions

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Abstract

Results

Fifty patients were treated: 48 had germline BRCA1/2 mutations; one had a BRCA2 germline sequence change of unknown significance, and another had a strong family history of BRCA1/2-associated cancers who declined mutation testing. Of the 50 patients, 13 had platinum-sensitive disease, 24 had platinum-resistant disease, and 13 had platinum-refractory disease (according to platinum-free interval). Twenty (40%; 95% CI, 26% to 55%) achieved Response Evaluation Criteria in Solid Tumors (RECIST) complete or partial responses and/or tumor marker (CA125) responses, and three (6.0%) maintained RECIST disease stabilization for more than 4 months, giving an overall clinical benefit rate of 46% (95% CI, 32% to 61%). Median response duration was 28 weeks. There was a significant association between the clinical benefit rate and platinum-free interval across the platinum-sensitive, resistant, and refractory subgroups (69%, 45%, and 23%, respectively). Post hoc analyses indicated associations between platinum sensitivity and extent of olaparib response (radiologic change, P = .001; CA125 change, P = .002).

Conclusion

Olaparib has antitumor activity in BRCA1/2 mutation ovarian cancer, which is associated with platinum sensitivity.

Citation impact

992
total citations
FWCI
43.81
Percentile
100%
References
28
Citations per year

Authors

18

Topics & keywords

Keywords
  • Olaparib
  • Medicine
  • Ovarian cancer
  • BRCA mutation
  • Internal medicine
  • PARP inhibitor
  • Oncology
  • Chemotherapy
UN Sustainable Development Goals
  • Good health and well-being
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