 This CLASS02-01 trial is a prospective, multicenter trial for LTG and open total gastrectomy OTG in patients with clinical stage I T1N0M0T1N1M0T2N0M0 gastric cancer. The primary purpose of this study is to evaluate the early operative morbidity and mortality and determine the safety of LTG compared with OTG for clinical stage I gastric adenocarcinoma. The second purpose is to evaluate the recovery course and compare the postoperative hospital stay of the patients enrolled in this study. 