Intraperitoneal and Intravenous Paclitaxel Plus S-1 for Gastric Cancer With Peritoneal Metastasis
JAMA Oncology 10.1001/jamaoncol.2026.1347May 21, 2026 at 11:00 AM EDT
Among patients with gastric cancer and peritoneal metastasis, does adding intraperitoneal paclitaxel to intravenous paclitaxel plus S-1 improve overall survival compared with intravenous paclitaxel plus S-1?In this randomized clinical trial that included 222 patients with gastric cancer with peritoneal metastasis, intraperitoneal and intravenous paclitaxel plus oral S-1 resulted in significantly longer overall survival than intravenous paclitaxel plus S-1 alone (19.4 vs 13.9 months) without increasing grade 3 or 4 adverse events.The findings of this randomized clinical trial potentially provide an encouraging signal that intraperitoneal paclitaxel may enhance first-line treatment of gastric cancer with peritoneal metastasis.
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