A randomized, open-label, multicenter trial of the concurrent chemoradiotherapy of capecitabine with or without oxaliplatin versus cisplatin with 5-FU for Chinese squamous esophageal cancer: An interim report from CRTCOESC.

4063Background: CRT with 5- FU and cisplatin (PF) has shown greater clinical efficacy for local advanced esophageal cancer (EC) but with high rate of acute toxicities (ATs). CRTCOESC is a randomized, open-label, multicenter trial designed to evaluate the effect and safety of capecitabine with or without oxaliplatin versus PF with CRT in Chinese EC. Methods: Pts with biopsy-proven squamous EC (T2-4N0-2M0) were randomized to single capecitabine (Arm1), capecitabine plus oxaliplatin (Arm2), or PF (Arm3), while daily radiation 50Gy/2Gy for all. Pts were stratified by different regimens cycles. Both grade3-5 ATs and 2-year OS were the primary endpoint, with a planned accrual of 249 pts to detect a decrease in Grade3-5 ATs from 40% to 20%. The secondary endpoint included objective response rate (ORR) and 2-year progression free survival (PFS). Interim analysis of ATs and ORR was planned for the first 120 pts. Results: The study accrued 128 pts from 2014.10-2016.12, 118 were eligible. 86 patients were finished 1...