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Chemotherapy of advanced small-bowel adenocarcinoma: a multicenter AGEO study
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International audience. Background: Small-bowel adenocarcinoma (SBA) is a rare tumor of poor prognosis. Data on the efficacy of chemotherapy for advanced SBA are scarce. Patients and methods: All patients with advanced SBA who received frontline chemotherapy from 1996 to 2008 were eligible for this retrospective multicenter study. Results: Ninety-three consecutive patients were included. In the entire population, the median progression-free survival (PFS) and overall survival (OS) times were 6.6 and 15.1 months, respectively. Median PFS times among patients treated with LV5FU2 (n = 10), FOLFOX (n = 48) FOLFIRI (n = 19) and LV5FU2-cisplatin (n = 16) were 7.7, 6.9, 6.0 and 4.8 months, respectively, while median OS times were 13.5, 17.8, 10.6 and 9.3 months, respectively. In multivariate analysis, World Health Organization performance status (PS) (P < 0.0001) and elevated serum levels of carcinoembryonic antigen (CEA) (P = 0.02) and carbohydrate antigen 19-9 (CA 19-9) (P = 0.03) were the only variables significantly associated with poor OS. In the subgroup of patients treated with platinum-based chemotherapy, multivariate analysis showed that LV5FU2-cisplatin was associated with poorer PFS (P < 0.0001) and OS (P = 0.02) compared with FOLFOX. Conclusions: This is the largest study of chemotherapy in advanced SBA. Baseline PS and CEA and CA 19-9 levels were the main prognostic factors. FOLFOX seems to be the most effective platinum-based chemotherapy regimen.
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