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Murviel-lès-Montpellier, France

Assenat E.,CAC Val dAurelle | Desseigne F.,CAC Leon Berard | Thezenas S.,CAC Val dAurelle | Viret F.,CAC Paoli Calmette | And 8 more authors.

Background. Triplet chemotherapy has demonstrated manageable toxicities and a favorable response rate. The addition of cetuximab to chemotherapy can increase treatment efficacy. We evaluated the efficacy and safety of cetuximab plus 5-fluorouracil, leucovorin, irinotecan, and oxaliplatin (FOLFIRINOX), the ERBIRINOX regimen, as first-line treatment in patients with unresectable metastatic colorectal cancer (mCRC). Patients and Methods. In a phase II study, treatment consisted of weekly cetuximab plus biweekly. Treatment was continued for a maximum of 12 cycles and tumor response was evaluated every four cycles. The primary efficacy criterion was the complete response (CR) rate. Results. From April 2006 to April 2008, 42 patients were enrolled. The median age was 60 years (range, 32-76 years). The median duration of treatment was 5.2 months (range, 0.7-8.5 months), and a median of nine cycles was given per patient (range, 1-12 cycles). Five patients (11.9%) showed a CR, with a median duration of 23.1 months (95% confidence interval [CI], 10.8-39.7 months). The objective response rate was 80.9% (95% CI, 65.9%-91.4%). The median overall and progression-free survival times were 24.7 months (95% CI, 22.6 months to not reached) and 9.5 months (95% CI, 7.6-10.4 months), respectively. The most frequent grade 3-4 adverse events were diarrhea (52%), neutropenia (38%), and asthenia (32%). Conclusion. The ERBIRINOX regimen appears to be effective and feasible in first-line treatment of mCRC patients. These promising results led us to initiate a multicenter, randomized, phase II trial ([Research Partnership for Digestive Oncology] PRODIGE 14) in patients with potentially resectable mCRC. © AlphaMed Press. Source

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