Randomized controlled phase III trial to investigate superiority of robot-assisted gastrectomy over laparoscopic gastrectomy for clinical stage T1-2N0-2 Gastric Cancer patients (JCOG1907, MONA LISA study)

INTERVENTION: A:Laparoscopic gastrectomy with nodal dissection B:Robot‐assisted gastrectomy with nodal dissection CONDITION: clinical stage T1‐2N0‐2 Gastric Cancer PRIMARY OUTCOME: Incidence of postoperative intra‐abdominal infectious complications including leakage, pancreatic fistula, and abdominal abscess with Clavien‐Dindo grade II and more SECONDARY OUTCOME: Incidence of postoperative complications with Clavien‐Dindo grade II and more, incidence of postoperative complications with Clavien‐Dindo grade IIIA and more, incidence of postoperative intra‐abdominal infectious complications with Clavien‐Dindo grade IIIA and more, relapse‐free survival, overall survival, proportion of robot‐assisted gastrectomy completion, proportion of laparoscopic gastrectomy completion, proportion of conversion to open surgery, proportion of surgery‐related death, short‐term clinical outcomes after gastrectomy INCLUSION CRITERIA: