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Clinical Trial
. 2019 Nov;29(9):1396-1404.
doi: 10.1136/ijgc-2019-000623.

Antitumor activity of the poly(ADP-ribose) polymerase inhibitor rucaparib as monotherapy in patients with platinum-sensitive, relapsed, BRCA-mutated, high-grade ovarian cancer, and an update on safety

Rebecca S Kristeleit  1 , Ana Oaknin  2 , Isabelle Ray-Coquard  3 , Alexandra Leary  4 , Judith Balmaña  2 , Yvette Drew  5 , Amit M Oza  6 , Ronnie Shapira-Frommer  7 , Susan M Domchek  8 , Terri Cameron  9 , Lara Maloney  10 , Sandra Goble  10 , Domenica Lorusso  11 , Jonathan A Ledermann  12 , Iain A McNeish  13
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Free article
Clinical Trial

Antitumor activity of the poly(ADP-ribose) polymerase inhibitor rucaparib as monotherapy in patients with platinum-sensitive, relapsed, BRCA-mutated, high-grade ovarian cancer, and an update on safety

Rebecca S Kristeleit et al. Int J Gynecol Cancer. 2019 Nov.
Free article

Abstract

Objective: To report results from an integrated efficacy and safety analysis supporting the European Commission's approval of the poly(ADP-ribose) polymerase inhibitor rucaparib as monotherapy treatment for relapsed, platinum-sensitive, BRCA-mutated ovarian cancer.

Methods: Efficacy was analyzed in platinum-sensitive patients from Study 10 (NCT01482715) and ARIEL2 (NCT01891344) who had high-grade serous or endometrioid epithelial ovarian, fallopian tube, or primary peritoneal cancer and a deleterious BRCA1 or BRCA2 mutation and received two or more prior chemotherapies (including two or more platinum-based therapies). The primary end point was investigator-assessed, confirmed objective response rate (visit cut-off: April 10, 2017). Safety was analyzed in patients with ovarian cancer, regardless of BRCA mutation status or lines of prior chemotherapies, who received at least one dose of rucaparib 600 mg in either study (visit cut-off: December 31, 2017).

Results: In the integrated platinum-sensitive efficacy population (n=79), objective response rate was 64.6% (95% CI, 53.0 to 75.0); 10.1% (8/79) of patients had a complete response and 54.4% (43/79) had a partial response. Median duration of response was 294 days (95% CI, 224 to 393). In the integrated safety population (n=565), the most common any-grade treatment-emergent adverse events were nausea (77.7%, 439/565), asthenia/fatigue (74.7%, 422/565), vomiting (45.8%, 259/565), and hemoglobin decreased (44.2%, 250/565). Treatment-emergent adverse events led to treatment interruption, dose reduction, or discontinuation in 60.2% (340/565), 46.0% (260/565), and 16.8% (95/565) of patients.

Conclusions: In patients with platinum-sensitive, BRCA-mutated ovarian cancer, rucaparib demonstrated antitumor activity and is the first and currently the only poly(ADP-ribose) polymerase inhibitor approved by the European Commission as treatment for this population. The safety analysis used a more recent visit cut-off date and larger population than previously published, was consistent with prior reports, and was the basis for the treatment-indication safety population in rucaparib's recently updated European Union label.

Keywords: ovarian cancer.

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Conflict of interest statement

Competing interests: RSK has served on advisory boards for Clovis Oncology, Roche, and Tesaro. AO has served on advisory boards for Clovis Oncology, AstraZeneca, Genmab/Seattle Genetics, ImmunoGen, PharmaMar, Roche, and Tesaro; has received support for travel or accommodation from Clovis Oncology, AstraZeneca, PharmaMar, and Roche; and reports institutional research grant support from Clovis Oncology, AbbVie Deutschland, Ability Pharmaceuticals, Advaxis, Aeterna Zentaris, Amgen, Aprea Therapeutics, Eisai, ImmunoGen, Merck/Merck Sharp & Dohme, Millennium Pharmaceuticals, PharmaMar, Roche, and Tesaro. IR-C has served on advisory boards for Clovis Oncology, AstraZeneca, Genmab/Seattle Genetics, ImmunoGen, PharmaMar, Roche, and Tesaro and received support for travel or accommodation from AstraZeneca and Roche. AL has served on advisory boards for Clovis Oncology, AstraZeneca, Gritstone, Genmab/Seattle Genetics, and Tesaro; reports institutional support for clinical trials from Clovis Oncology and AstraZeneca; and reports boarding and travel expenses for congress activities from Clovis Oncology, AstraZeneca, and Roche. JB has served on advisory boards for Clovis Oncology, AstraZeneca, and Bristol-Myers Squibb and received support for travel from AstraZeneca. YD has served on advisory boards for Clovis Oncology, AstraZeneca, Genmab, and Tesaro; serves on a trial steering committee for AstraZeneca; has received research funding from Clovis Oncology; her institution, Newcastle Hospitals NHS Foundation Trust, has received reimbursement of study costs from Clovis Oncology for a clinical trial described in this manuscript. YD and her employer (Newcastle University) receive royalties in recognition of their role in the preclinical development of rucaparib. AMO has served on steering committees for Clovis Oncology, AstraZeneca, and Tesaro. RS-F has served on advisory boards for Clovis Oncology. SMD has received honoraria from Clovis Oncology, AstraZeneca, and Bristol-Myers Squibb, and her institution has received research funding from Clovis Oncology and AstraZeneca. TC, LM, and SG are employees of Clovis Oncology and may own stock or have stock options in that company. DL has served in a consulting or advisory role for Clovis Oncology, AstraZeneca, Genmab, Merck, and Tesaro and received institutional research support from Clovis Oncology, Merck, PharmaMar, and Tesaro. JAL has served in an advisory role for Clovis Oncology, Artios Pharma, AstraZeneca, Merck/Merck Sharp & Dohme, Pfizer, Seattle Genetics, and Tesaro; is chair of an independent Data Monitoring Committee for Regeneron; and has served on speakers' bureaus for and received research grants from AstraZeneca and Merck/Merck Sharp & Dohme. IAM has served on advisory boards for Clovis Oncology, AstraZeneca, Takeda, and Tesaro and receives institutional funding from AstraZeneca.

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