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Background: Epidermal growth factor receptor (EGFR) and ligand expression is frequently seen in hepatocellular carcinoma (HCC). A phase 2 study was performed with cetuximab, a chimeric monoclonal antibody that binds specifically to EGFR, in patients with advanced HCC.

Methods: Eligibility criteria included unresectable or metastatic measurable HCC, an Eastern Cooperative Oncology Group performance status
Results: Thirty patients were enrolled and assessable for efficacy and toxicity. No responses were seen. Five patients had stable disease (median time, 4.2 months; range, 2.8-4.2 months). The median overall survival was 9.6 months (95% confidence interval [CI], 4.3-12.1 months) and the median progression-free survival (PFS) was 1.4 months (95% CI, 1.2-2.6 months). The treatment was generally well tolerated. No treatment-related grade 4-5 toxicities occurred. Grade 3 (according to the National Cancer Institute's Common Terminology Criteria for Adverse Events [version 3.0]) aspartate aminotransferase, hypomagnesemia, and fever without neutropenia were noted in 1 patient (3.3%) each. On Week 6 of Cycle 1, arithmetic mean serum cetuximab concentrations for patients with Child-Turcotte-Pugh (CTP) A and CTP B disease were 47.6 mcg/mL and 66.9 mcg/mL, respectively.

Conclusions: Although cetuximab could be safely administered with tolerable toxicity profiles, it demonstrated no antitumor activity in HCC in this phase 2 study. Cetuximab trough concentrations were not notably altered in patients with mild to moderate hepatic dysfunction.

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http://dx.doi.org/10.1002/cncr.22829DOI Listing

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