• Ji Yeon Park, Young-Woo Kim, Keun Won Ryu, Byung-Ho Nam, Young Joon Lee, Sang Ho Jeong, Ji-Ho Park, Hoon Hur, Sang-Uk Han, Jae Seok Min, Ji Yeong An, Woo Jin Hyung, Gyu Seok Cho, Gui Ae Jeong, Oh Jeong, Young Kyu Park, Mi Ran Jung, Hong Man Yoon, and Bang Wool Eom.
• Department of Surgery, National Cancer Center, Goyang, Republic of Korea.
• Bmc Cancer. 2016 May 31; 16: 340.

BackgroundAlong with the marked increase in early gastric cancer (EGC) in the Eastern countries, there has been an effort to adopt the sentinel node concept in EGC to preserve gastric function and reduce the occurrence of postoperative complications. Based on promising results from a previous quality control study, this prospective multicenter randomized controlled phase III clinical trial aims to elucidate the oncologic safety of laparoscopic stomach-preserving surgery with sentinel basin dissection (SBD) compared to a standard laparoscopic gastrectomy.Methods/DesignThis trial is an investigator-initiated, open-label, multicenter randomized controlled phase III trial with a non-inferiority design. Patients diagnosed with a single lesion of clinical stage T1N0M0 gastric adenocarcinoma, with a diameter of 3 cm or less are eligible for the present study. A total of 580 patients (290 per group) will be randomized to either laparoscopic stomach-preserving surgery with SBD or standard surgery. The primary end-point is 3-year disease-free survival (DFS) and the secondary endpoints include postoperative morbidity and mortality, quality of life, 5-year DFS, and overall survival. Qualified investigators who completed the prior quality control study are exclusively allowed to participate in this phase III clinical trial.DiscussionThe proposed trial is expected to verify whether laparoscopic stomach-preserving surgery with SBD achieves similar oncologic outcomes and improved quality of life compared to a standard gastrectomy in EGC patients.Trial RegistrationThis study was registered at the NIH ClinicalTrial.gov database ( NCT01804998 ) on March 4th, 2013.

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