RT Journal Article SR Electronic T1 Cisplatin Plus Capecitabine After Adjuvant S-1 in Metastatic Gastric Cancer: A Phase II T-CORE1102 Trial JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 2009 OP 2015 DO 10.21873/anticanres.15680 VO 42 IS 4 A1 YOSHIOKA, TAKASHI A1 TAKAHASHI, MASANOBU A1 SAKAMOTO, YASUHIRO A1 OKITA, AKIRA A1 FUKUI, TADAHISA A1 MURAKAWA, YASUKO A1 SHINDO, YOSHIAKI A1 IMAI, HIROO A1 OHORI, HISATSUGU A1 SHIROTA, HIDEKAZU A1 CHIBA, NATSUKO A1 SASAHARA, YURIKO (ITO) A1 NOMURA, TAKASHI A1 FUKUSHIMA, NORIMASA A1 YAMAGUCHI, TAKUHIRO A1 SHIMODAIRA, HIDEKI A1 ISHIOKA, CHIKASHI YR 2022 UL http://ar.iiarjournals.org/content/42/4/2009.abstract AB Background/Aim: This phase II study assessed the efficacy of capecitabine plus cisplatin in patients with advanced gastric cancer refractory to adjuvant S-1. Patients and Methods: This single-arm, open-label, multicenter, phase II study was conducted by Tohoku Clinical Oncology Research and Education Society (T-CORE) in Japan. Patients aged ≥20 years with advanced HER2-negative gastric cancer that was refractory to S-1 were enrolled. Patients received 80 mg/m2 cisplatin on day 1 intravenously and 1,000 mg/m2 capecitabine twice daily from day 1 to day 14, in 3-week cycles. The primary endpoint was progression-free survival (PFS). The threshold overall response rate (ORR) was estimated to be 15%. The secondary endpoints were overall survival (OS), time to treatment failure, ORR, and toxicities. Results: In total, 21 patients were enrolled from seven hospitals. The median patient age was 63 years. Nineteen patients received the protocol treatment. Median PFS was 3.7 months [90% confidence interval (CI)=2.7-5.6 months], which did not reach the predefined threshold of 4.0 months. ORR was 5.9% (95%CI=0.0-17.1%). Median OS was 11.9 months (95% CI 6.3-19.4 months). Febrile neutropenia was observed in 5.3% of patients. The most frequently observed grade 3 non-hematologic toxicities were nausea (15.8%) and hyponatremia (15.8%). Conclusion: The addition of a fluoropyrimidine to a platinum agent after adjuvant therapy is not suitable for gastric cancer.