[TS-1/CDDP therapy for advanced gastric cancer as neoadjuvant chemotherapy].

Five patients with inoperable advanced gastric cancer were treated with combination chemotherapy of TS-1 and cisplatin (CDDP). TS-1 of 80-120 mg/body/day was orally administered for 3 weeks followed by 2 drug-free weeks, and 60 mg/m2/day of CDDP was venally administered on Day 8. It was possible to evaluate all 5 patients for response and toxicity. Only low grade toxicities (Grade 1 or 2) of leukocytopenia, neutrocytopenia, anemia, nausea, diarrhea and stomatitis were seen. Four of 5 patients achieved a partial response, for a response rate of 80.0%. Stomach, liver, lymph node and peritoneal tumors responded to TS-1/CDDP. TS-1/CDDP therapy produces a high response in cases of gastric cancer, and it is useful as a neoadjuvant chemotherapy.