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The combination of oxaliplatin (L-OHP), 5-fluorouracil (5-Fu) and folinic acid (FA), being one of the effective regimens for advanced gastric cancer, is used in form of chronomodulated chemotherapy for advanced gastric cancer to investigate its efficacy and safety.Twenty-six patients received a 4-day chronomodulated infusion of L-OHP, 5-Fu and FA. L-OHP (25 mg.m(-2).d(-1)) infused from 10:00 am to 22:00 pm, and followed by 5-Fu (600 mg.m(-2).d(-1)) and FA (300 mg.m(-2).d(-1)) from 22:00 pm to 10:00 am for 4 days using a multichannel programmable pump, every 2 weeks as an cycle for at least 2 cycles.Twenty-six patients with previously untreated advanced gastric cancer were eligible. Two complete and 13 partial remissions were observed with an overall response rate of 57.7%. Stable disease was observed in 6 patients (23.1%) and progressive disease in five (19.2%). Four of these patients underwent surgery. The median remission time was 3.5 months and time to tumor progression (TTP) was 4.5 months. The median overall survival time was 8 months. A total of 80 cycles were given without any grade 4 toxicity observed, but grade 3 thrombocytopenia (1.3%) and mucositis (1.3%) in one patient, two grade 3 neutropenia (2.5%) and nausea/vomiting (2.5%) in 2.Chronomodulated intravenous chemotherapy of oxaliplatin, 5-fluorouracil and folinic acid is effective and safe in the treatment of advanced gastric cancer.