alexa Clinical Activity of Gemcitabine Plus Pertuzumab in Platinum-Resistant Ovarian Cancer, Fallopian Tube Cancer, or Primary Peritoneal Cancer
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Molecular Pharmaceutics & Organic Process Research

Author(s): Makhija S, Mark X Sliwkowski, Ursula Matulonis

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Purpose Pertuzumab is a humanized monoclonal antibody that inhibits human epidermal growth factor receptor 2 (HER2) heterodimerization and has single-agent activity in recurrent epithelial ovarian cancer. The primary objective of this phase II study was to characterize the safety and estimate progression-free survival (PFS) of pertuzumab with gemcitabine in patients with platinum-resistant ovarian cancer. Patients and Methods Patients with advanced, platinum-resistant epithelial ovarian, fallopian tube, or primary peritoneal cancer who had received a maximum of one prior treatment for recurrent cancer were randomly assigned to gemcitabine plus either pertuzumab or placebo. Collection of archival tissue was mandatory to permit exploration of biomarkers that would predict benefit from pertuzumab in this setting. Results One hundred thirty patients (65 per arm) were treated. Baseline characteristics were similar between arms. The adjusted hazard ratio (HR) for PFS was 0.66 (95% CI, 0.43 to 1.03; P = .07) in favor of gemcitabine + pertuzumab. The objective response rate was 13.8% in patients who received gemcitabine + pertuzumab compared with 4.6% in patients who received gemcitabine + placebo. In patients whose tumors had low HER3 mRNA expression (< median, n = 61), an increased treatment benefit was observed in the gemcitabine + pertuzumab arm compared with the gemcitabine alone arm (PFS HR = 0.32; 95% CI, 0.17 to 0.59; P = .0002). Grade 3 to 4 neutropenia, diarrhea, and back pain were increased in patients treated with gemcitabine + pertuzumab. Symptomatic congestive heart failure was reported in one patient in the gemcitabine + pertuzumab arm.

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This article was published in Journal of Molecular Pharmaceutics & Organic Process Research and referenced in Journal of Molecular Pharmaceutics & Organic Process Research

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