1. Translational Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan. 1
2. Department of Clinical Oncology, Hiroshima University Hospital, Hiroshima, Japan. 2
3. Department of Surgery, NHO Osaka National Hospital, Osaka, Japan. 3
4. Department of Gastrointestinal and Medical Oncology, NHO Kyushu Cancer Center, Fukuoka, Japan. 4
5. Department of Head and Neck, Esophageal Medical Oncology, National Cancer Center Hospital, Tokyo, Japan. 5
6. Department of Cancer Center, Hokkaido University Hospital, Sapporo, Japan. 6
7. Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan. 7
8. Department of Clinical Oncology, Aichi Cancer Center Hospital, Nagoya, Japan. 8
9. Gastrointestinal Medical Oncology, NHO Shikoku Cancer Center, Matsuyama, Japan. 9
10. Division of Molecular Therapeutics, Aichi Cancer Center Research Institute, Nagoya, Japan. 10
11. Department of Urology, Graduate School of Medicine, Osaka University, Suita, Japan. 11
12. Department of Clinical Oncology, St. Marianna University School of Medicine, Kawasaki, Japan. 12
13. Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Yokohama, Japan. 13
14. Division of Gastrointestinal Oncology, Shizuoka Cancer Center, Shunto-gun, Japan. 14
15. Cancer Treatment Center, Kansai Medical University Hospital, Hirakata, Japan. 15
16. Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan. 16
17. Division of Genome Analysis Platform Development, National Cancer Center Research Institute, Tokyo, Japan. 17
18. Translational Research Laboratories, Daiichi Sankyo Co., Ltd., Tokyo, Japan. 18
19. Clinical Research Support Office, National Cancer Center Hospital East, Kashiwa, Japan. 19
20. Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Tokyo, Japan. 20
21. Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Kanagawa, Japan. 21