Professor Do Joong Park from Division of Gastrointestinal Surgery and Minimally Invasive Surgery, Department of Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seoul, Korea, is actively performing gastric cancer surgeries with many experiences of minimally invasive surgeries such as laparoscopic, robotic or single port gastrectomies. Prof. Park has been participating in many important clinical studies such as KLASS (PI of KLASS 5: Phase III trial for laparoscopic proximal gastrectomy versus total gastrectomy for upper early gastric cancer), REGATTA, sentinel node, etc., and has played an important role in many Korean and International societies.