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Title: FOLFIRI plus cetuximab versus FOLFIRI plus bevacizumab as first-line treatment for patients with metastatic colorectal cancer-subgroup analysis of patients with KRAS: mutated tumours in the randomised German AIO study KRK-0306. Author: Stintzing S, Fischer von Weikersthal L, Decker T, Vehling-Kaiser U, Jäger E, Heintges T, Stoll C, Giessen C, Modest DP, Neumann J, Jung A, Kirchner T, Scheithauer W, Heinemann V. Journal: Ann Oncol; 2012 Jul; 23(7):1693-9. PubMed ID: 22219013. Abstract: BACKGROUND: The AIO KRK-0306 trial compares the efficacy of infusional 5-fluorouracil, folinic acid, irinotecan (FOLFIRI) plus cetuximab with FOLFIRI plus bevacizumab in first-line treatment of metastatic colorectal cancer (mCRC). In October 2008, an amendment terminated the inclusion of patients with KRAS-mutated tumours. This subgroup of patients is evaluated in the present analysis, while the study is ongoing for patients with KRAS wild-type tumours. METHODS: Patients were randomly assigned to FOLFIRI (Tournigand regimen) every 2 weeks plus cetuximab (400 mg/m2 day 1, followed by 250 mg/m2 weekly=arm A) or bevacizumab (5 mg/kg every 2 weeks=arm B). Among 336 randomised patients, KRAS mutation was demonstrated in 100 assessable patients. The primary study end point was objective response rate (ORR). RESULTS: ORR was 44% [95% confidence interval (CI) 29% to 59%] in arm A versus 48% (95% CI, 33% to 62%) in arm B. Progression-free survival was 7.5 versus 8.9 months (hazard ratio: 1.0) and overall survival was 22.7 versus 18.7 months (hazard ratio: 0.86) in arms A versus B, respectively. CONCLUSIONS: This is the first head to head comparison of cetuximab versus bevacizumab in first-line treatment of mCRC. In the present evaluation of patients with KRAS-mutated tumours, neither strategy demonstrated a clearly superior outcome.[Abstract] [Full Text] [Related] [New Search]