^○Takuro Mizukami, Arai Hiroyuki, Takeda Hiroyuki, Doi Ayako, Horie Yoshiki, Umemoto Kumiko, Izawa Naoki, Sunakawa Yu (Department of Clinical Oncology, St. Marianna University School of Medicine)

^○Satoshi Yuki¹, Yu Sunakawa², Hiroya Taniguchi^3,4, Hideaki Bando⁴, Kentaro Yamazaki⁵, Tomohiro Nishina⁶, Takashi Ohta⁷, Tadamichi Denda⁸, Taito Esaki⁹, Hisato Kawakami¹⁰, Atsuo Takashima¹¹, Takeshi Kato¹², Koji Ando¹³, Toshikazu Moriwaki¹⁴, Taroh Satoh¹⁵, Yoshinaga Okugawa¹⁶, Yukiko Abe¹⁷, Shogo Nomura¹⁸, Chiharu Asano¹⁹, Takayuki Yoshino⁴ (1.Department of Gastroenterology and Hepatology, Hokkaido University Hospital, 2.Department of Clinical Oncology, St. Marianna University School of Medicine, 3.Department of Clinical Oncology, Aichi Cancer Center Hospital, 4.Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, 5.Division of Gastrointestinal Oncology, Shizuoka Cancer Center, 6.Department of Gastrointestinal Medical Oncology, National Hospital Organization Shikoku Cancer Center, 7.Department of Clinical Oncology, Kansai Rosai Hospital, 8.Division of Gastroenterology, Chiba Cancer Center, 9.Department of Gastrointestinal and Medical Oncology, National Kyushu Cancer Center, 10.Department of Medical Oncology, Kindai University Faculty of Medicine, 11.Division of Gastrointestinal Medical Oncology, National Cancer Center Hospital, 12.Department of Surgery, National Hospital Organization Osaka National Hospital, 13.Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, 14.Department of Gastroenterology, University of Tsukuba Hospital, 15.Department of Frontier Science for Cancer and Chemotherapy, Osaka University Graduate School of Medicine, 16.Division of Genomic Medicine, Mie University Hospital, 17.G&G Science Co., Ltd., 18.Clinical Research Support Office, National Cancer Center Hospital East, 19.Institute of Health Science Innovation for Medical Care (HELIOS), Hokkaido University Hospital)

^○Toshiharu Hirose¹, Atsuo Takashima¹, Hidekazu Hirano¹, Natsuko Okita¹, Hirokazu Shoji¹, Satoru Iwasa¹, Rie Matsuo², Kimihiko Kawamura², Hiroya Taniguchi³, Naoto Tsuchiya⁴, Satoru Otsu⁵, Shuichi Hironaka⁵, Hiromichi Matsushita², Ken Kato¹ (1.Department of Gastrointestinal Medical Oncology, National Cancer Center Hospital, 2.Department of Laboratory Medicine, National Cancer Center Hospital, 3.Department of Clinical Oncology, Aichi Cancer Center Hospital, 4.Laboratory of Molecular Carcinogenesis, National Cancer Center Research Institute, 5.Department of Medical Oncology and Hematology, Oita University Faculty of Medicine)

^○Ryan Wai-Yan Sin (Department of Surgery, The University of Hong Kong)

^○Wen Cai¹, Wenwen Bao¹, Linxin Hua², Weiting Ge², Jianshan Mao¹, Jiawei Zhang² (1.Department of Gastroenterology (Cancer Institute, Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education), Second Affiliated Hospital of Zhejiang University School of Medicine, China, 2.Cancer Institute, Key Laboratory of Cancer Prevention and Intervention, China National Ministry of Education, Second Affiliated Hospital of Zhejiang University School of Medicine, China)

^○Saori Mishima¹, Akihito Kawazoe¹, Yoshiaki Nakamura¹, Martina Lefterova², Justin Odegaard², Takayuki Yoshino¹ (1.Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, 2.Guardant Health)