The Japan Clinical Oncology Group (JCOG) is the largest Japanese cooperative group funded primarily by the National Cancer Center Research and Development Fund.

Member Institutions

As of Dec 2022, a total of 188 institutions participate in JCOG.
To view a list of JCOG member institutions by region, please click on the map below.


Hokkaido/Tohoku Hokkaido/Tohoku Kanto Tokai Kinki Chugoku/Shikoku Chugoku/Shikoku Kyushu/Okinawa Kyushu/Okinawa Hokkaido/Tohoku Koshinetsu/Hokuriku Chugoku/Shikoku Kanto Tokai Kinki Kyushu/Okinawa Koshinetsu/Hokuriku


Sapporo-Kosei General Hospital
Asahikawa Medical Center
National Hospital Organization Hokkaido Cancer Center
Sapporo Hokuyu Hospital
Hokkaido University Hospital
Asahikawa Medical University hospital
Nakamura Memorial Hospital
Sapporo Medical University
Hakodate Goryoukaku Hospital
Keiyukai Sapporo Hospital
Teine-Keijinkai Hospital
Hirosaki University Hospital
Iwate Medical University
National Hospital Organization, Sendai Medical Center
Tohoku University Hospital
Miyagi Cancer Center
Sendai Kousei Hospital
Akita University Graduate School of Medicine
Akita Kousei Medical Center
Yamagata Prefectural Central Hospital
Yamagata University Hospital
Fukushima Medical University Hospital
Southern Tohoku General Hospital

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Faculty of Medicine, University of Tsukuba
Ibaraki Prefectural Central Hospital & Cancer Center
Tochigi Cancer Center
Jichi Medical University
Dokkyo Medical University Hospital
Gunma Prefectural Cancer Center
Gunma University
National Defense Medical College
Saitama Cancer Center
Saitama Medical Center, Jichi Medical School
Saitama Medical University International Medical Center
Saitama Medical Center, Saitama Medical University
Saitama medical University Hospital
National Cancer Center Hospital East
Chiba Cancer Center
Chiba University, Graduate School of Medicine
Asahi General Hospital
Jikei Kashiwa Hospital
Funabashi Municipal Medical
National Cancer Center Hospital
Nihon University Itabashi Hospital
Kyorin University Faculty of Medicine
Tokyo Medical University Hospital
Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital
National Center for Global Health and Medicine (NCGM)
Tokyo Women's Medical University
National Hospital Organization Tokyo Medical Center
Keio University Hospital
Showa University School of Medicine
Tokyo Medical and Dental University Hospital
Jikei University Hospital
Jikei University,Daisan Hospital
Cancer Institute Hospital of Japanese Foundation for Cancer Research
The University of Tokyo Hospital
Toranomon Hospital
Toho University Ohashi Medical Center
Japanese Red Cross Medical Center
Juntendo University Hospital
Toho University Omori Medical Center
Nippon Medical School Hospital
Teikyo University School of Medicine
St.Luke's International Hospital
Tokyo Metropolitan Bokutoh Hospital
NTT Medical Center Tokyo
Tokai University Hachioji Hospital
Yokohama City University Hospital
Tokai University School of Medicine
St.Marianna University School of Medicine
Kanagawa Cancer Center
Yokohama Municipal Citizen's Hospital
Kitasato University School of Medicine
Yokohama City University Medical Center

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Niigata Cancer Center Hospital
Niigata University Medical and Dental Hospital
Nagaoka Chuo General Hospital
Toyama Prefectural Central Hospital
Toyama University Hospital
Kanazawa University School of Medicine
Ishikawa Prefectural Central Hospital
University of Fukui Hospital
University of Yamanashi Faculty of Medicine
Yamanashi Prefectural Central Hospital
Saku Central Hospital Advanced Care Center
Sinshu University School of Medicine
Aizawa Hospital

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Gifu University School of Medicine
Gifu Municipal Hospital
Ogaki Municipal Hospital
Gifu Prefectural General Medical Center
Shizuoka General Hospital
Hamamatsu University School of Medicine
Shizuoka Cancer Center
Aichi Cancer Center Hospital
National Hospital Organization Nagoya Medical Center
Nagoya University School of Medicine
Fujita Health University
Nagoya City University Hospital
Japanese Red Cross Aichi Medical Center Nagoya Daini Hospital
Aichi Medical University
Toyota Kosei Hospital
Nagoya City University West Medical Center
Mie University School of Medicine

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Shiga General Hospital
Kyoto University Hospital
National Hospital Organization Kyoto Medical Center
Kyoto Prefectural University of Medicine
Japanese Red Cross Kyoto Daiichi Hospital
Osaka University Graduate School of Medicine
Osaka City University Hospital
Osaka Redcross Hospital
Kindai University Hospital
Osaka International Cancer Institute
National Hospital Organization Osaka National Hospital
National Hospital Organization Kinki-Chuo Chest Medical Center
Osaka General Medical Center
Osaka City General Hospital
Osaka Medical College
Toyonaka Municipal Hospital
Sakai City Medical Center
Minoh City Hospital
Suita Municipal Hospital
Kansai Medical University Hospital
Osaka Rosai Hospital
Yao Municipal Hospital
Kobe University Graduate School of Medicine
Kansai Rosai Hospital
Hyogo Medical University
Hyogo Cancer Center
Itami City Hospital
Institute of Biomedical Research and Innovation, Hospital
Hyogo Ion Beam Medical Center
Himeji Red Cross Hospital
Nara Medical University
Wakayama Medical University, School of Medicine
Japanese Red Cross Society Wakayama Medical Center

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Faculty of Medicine,Tottori University
Shimane University Faculty of Medicine
Shimane Prefectural Centeral Hospital
Kurashiki Central Hospital
Kawasaki Medical School Hospital
Japanese Red Cross Okayama Hospital
Tsuyama Chuo Hospital 
Okayama University Hospital
National Hospital Organization Kure Medical Center Chugoku Cancer Center
Hiroshima University Hospital
Hiroshima City Hiroshima Citizens Hospital
NHO Fukuyama Medical Center
Hiroshima Prefectural Hospital
Hiroshima City North Medical Center Asa Citizens Hospital
Fukuyama City Hospital
Hiroshima High-Precision Radiotherapy Cancer Center
Yamaguchi University Hospital
National Hospital Organization Yamaguchi-Ube Medical Center
Tokushima Red Cross Hospital
Tokushima University Hospital
Faculty of Medicine, Kagawa University
Kagawa Prefectural Central Hospital
National Hospital Organization Shikoku Cancer Center
Ehime University Hospital
Kochi Health Sciences Center
Kochi Medical School Hospital

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National Kyushu Cancer Center
School of Medicine,Fukuoka University
National Hospital Organization Kyushu Medical Center
Kurume University School of Medicine
University of Occupational and Environmental Health
Kitakyushu Municipal Medical Center
Kyushu University Hospital
Hara Sanshin Hospital
Kyushu Rosai Hospital
Faculty of Medicine, Saga University
Nagasaki Medical Center
Sasebo City General Hospital
Nagasaki University Hospital
Kumamoto University Hospital
NHO Kumamoto Medical Center
Oita Prefectural Hospital
Oita University Hospital
Miyazaki University Hospital
Kagoshima University Hospital
Kagoshima City Hospital
Imamura General Hospital
Social medical corporation Hakuaikai Sagara Hospital
National Hospital Organization Kagoshima Medical Center
University of the Ryukyus Hospital
Okinawa Chubu Hospital