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 TAKASHI YOSHIOKA A1 MASANOBU TAKAHASHI A1 YASUHIRO SAKAMOTO A1 AKIRA OKITA A1 TADAHISA FUKUI A1 YASUKO MURAKAWA A1 YOSHIAKI SHINDO A1 HIROO IMAI A1 HISATSUGU OHORI A1 HIDEKAZU SHIROTA A1 NATSUKO CHIBA A1 YURIKO (ITO) SASAHARA A1 TAKASHI NOMURA A1 NORIMASA FUKUSHIMA A1 TAKUHIRO YAMAGUCHI A1 HIDEKI SHIMODAIRA A1 CHIKASHI ISHIOKA 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.