Our Vision
Our vision is a world without breast cancer.
Working Toward a Cure for All Cases of Breast Cancer
For the benefit of all patients and their families whose lives have been or will be affected by breast cancer, the JBCRG is working to improve breast cancer treatment and outcomes. Our ultimate aim is a world in which all cases of breast cancer are curable and no more lives are lost to this disease.
Our Principles
- We conduct research in a way that ensures the scientific validity of our findings.
- The human rights of patients with breast cancer are our top priority. Our research is conducted in accordance with national and international ethical standards.
- We are committed to transparency regarding the funding of our research.
Greetings

Japan Breast Cancer Research Group (JBCRG) is a network of doctors and researchers from across Japan dedicated to conducting clinical trials, clinical research, and translational research, with the aim of discovering and establishing new and improved treatments for breast cancer. For the past two decades, following in the footsteps of its predecessor organization, JBCRG has remained committed to providing the best possible treatment for every patient.
JBCRG will continue to harness big data generated through patient medical records, advanced testing technologies and artificial intelligence, striving to implement evidence-based practices that enhance survivorship. Drawing on its accumulated expertise, the group will propose policies and initiatives that benefit individualized patient care. To achieve this, JBCRG is devoted to fostering an international perspective by collaborating with medical experts across various specialties and researchers from diverse backgrounds. Furthermore, the group is committed to laying the groundwork for the future of breast cancer research by supporting and empowering the next generation of doctors and researchers.
We are deeply grateful for the generous donations from individuals and private companies that have supported our research activities. We will continue to listen to the voices of patients, their families, and the broader public, working towards a society where everyone has access to safe and effective treatments. We sincerely appreciate and look forward to your continued warm support for our endeavors.
Shigehira Saji, M.D., Ph.D.
Representative Director, JBCRG
Professor and Chairman, Department of Medical Oncology, Fukushima Medical University
Organizational chart
Officers list
Represen
tative
Director
Shigehira Saji
Fukushima Medical University
Executive Director
Hiroshi Ishiguro
Saitama Medical University International Medical Center
Norikazu Masuda
Kyoto University Graduate School of Medicine
Chikako Shimizu
National Center for Global Health and Medicine
Takahiro Nakayama
Osaka International Cancer Institute
Yasuaki Sagara
Hakuaikai Sagara Hospital
Director
Kenjiro Aogi
Shikoku Cancer Center
Yutaka Yamamoto
Kumamoto University Hospital
Toshinari Yamashita
Kanagawa Cancer Center
Shoichiro Ohtani
Ohtani Shoichiro Breast Clinic
Takayuki Ueno
Cancer Institute Hospital of JFCR
Hiroko Tamura Bando
Institute of Clinical Medicine University of Tsukuba
Manabu Futamura
Gifu University Hospital
Masato Takahashi
Hokkaido University Hospital
Eriko Kitao Tokunaga
Kyushu Cancer Center
Masahiro Takada
Kansai Medical University
Tetsuhiro Yoshinami
Osaka University Hospital
Hiroko Sangai Masuda
Tokyo Metropolitan Komagome Hospital
Atsuko Yamamoto Kitano
St.Luke’s International Hospital
Tatsunori Shimoi
National Cancer Center Hospital
Yukinori Ozaki
Cancer Institute Hospital of JFCR
Auditor
- Katsumasa Kuroi
- Tokyo Metropolitan Tama Medical Center
- Shinji Ohno
- Hakuaikai Sagara Hospital
Honorary Advisor
- Masakazu Toi
- Tokyo Metropolitan Komagome Hospital