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Gynecol Oncol. 2008 Mar;108(3):493-9. doi: 10.1016/j.ygyno.2007.11.029. Epub 2008 Jan 14.

Phase II trial of cetuximab and carboplatin in relapsed platinum-sensitive ovarian cancer and evaluation of epidermal growth factor receptor expression: a Gynecologic Oncology Group study.

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  • 1Department of Gynecologic Oncology, Duke University Medical Center, Durham, North Carolina 27710, USA. secor002@mc.duke.edu

Abstract

PURPOSE:

This phase II trial assessed the activity and tolerability of cetuximab (C225, Erbitux) in combination with carboplatin in patients with relapsed platinum-sensitive ovarian or primary peritoneal carcinoma.

PATIENTS AND METHODS:

Patients were to receive combination therapy with cetuximab (initial dose of 400 mg/m2 intravenously on cycle 1, day 1, followed by weekly infusions of 250 mg/m2) and carboplatin (AUC of 6 on day 1 and every 3 weeks). The primary objectives of this trial were to estimate the anti-tumor activity and adverse events of this combination therapy. Immunohistochemical expression of EGFR was evaluated in tumor specimens from patients enrolled in this trial.

RESULTS:

Of the 29 patients, 28 (97%) were eligible and evaluable for analysis of the efficacy and toxicity of cetuximab administered in combination with carboplatin. Of the evaluable entries, 26 had EGFR-positive tumors and the response rate in this group of patients was as follows: 9 demonstrated an objective response (3 CR; 6 PR) and 8 had stable disease. The response rate did not meet criteria for opening a second stage of accrual. The median time to progression was 9.4+ months (range: .9-22.2+). The most commonly observed adverse events were dermatologic toxicity (grade 3 in 32%), thrombocytopenia (grade 3 in 14%), and hypersensitivity reactions (grade 3 and 4 in 18%).

CONCLUSIONS:

Cetuximab administered in combination with carboplatin had modest activity in screened patients with EGFR-positive, relapsed platinum-sensitive ovarian or primary peritoneal carcinoma. Cetuximab was associated with an acneiform rash in a majority of patients and occasional serious hypersensitivity reactions.

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