Overview Phase I Study of CCRT as Adjuvant Treatment for Stage II/III Operable Rectal Cancer. Status: Unknown status Trial end date: 2015-12-01 Target enrollment: Participant gender: Summary The purpose of this study is to determine the maximum tolerated dose and safety of S-1 plus radiotherapy for patients with rectal cancer Phase: Phase 1 Details Lead Sponsor: Daping Hospital and the Research Institute of Surgery of the Third Military Medical University