JOURNAL ARTICLE
MULTICENTER STUDY
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Efficacy of irinotecan in combination with 5-fluorouracil (FOLFIRI) for metastatic gastric or gastroesophageal junction adenocarcinomas (MGA) treatment.

OBJECTIVES: The most commonly used schedules are 5-FU in combination with CDDP with or without epirubicin (ECF) or docetaxel (TCF) in treatment of MGA patients (pts), independently of HER status. We evaluated the efficacy of FOLFIRI regimen in a large retrospective series of MGA pts.

METHODS: Two hundred and twelve pts from 13 French centers were treated with at least one cycle of FOLFIRI (irinotecan 180 mg/m2 intravenous (i.v.) over 90 minutes on day 1 with folinic acid (FA) 400mg/m2 i.v. over two hours followed by 5-FU 400mg/m2 i.v. bolus then 5- FU 2400 mg/m2 continuous infusion over 46 hours on day 1, repeated every 14 days). Primary tumour sites were 120 (58%) stomach and 92 (42%) gastroesophageal junction. FOLFIRI was administered as first-line in 137 (65%) pts and as later-line in 75 (35%) pts for MGA.

RESULTS: There was no difference between chemonaive and not chemonaive pts treated as firstline in terms of response rate 37% (95% CI: 25-50) vs 44% (95% CI: 21-69), median PFS, 6.7 (95% CI: 5.5-9.9) vs 5.3 months (95% CI: 3.6-6.9) (P = 0.25), and OS, 13.1 (95% CI: 11.7-18.7) vs 8.8 months (95% CI: 7.3—15.6) (P = 0.19), respectively. There was no difference between pts treated as second or later-line in terms of response rate 20% (95% CI: 8-39) vs 22% (95% CI: 6-48), median PFS, four months (95% CI: 2.8-5.4) vs 3.5 months (95% CI: 2.3-4.5) (P = 0.56), and OS, 10.4 months (95% CI: 5.4-14.4) vs 5.3 months (95% CI: 3.5-11.3) (P = 0.58), respectively. The global grade 3-4 toxicities were: diarrhea 11%, vomiting 9%, neutropenia 18%, febril neutropenia 4% (one toxic death).

CONCLUSIONS: This retrospective study confirms the activity and good tolerance of FOLFIRI regimen in MGA as first-line as well as later-line.

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