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Yousuke Nakai

Yousuke  Nakai

Department of Endoscopy and Endoscopic Surgery


M.D., Ph.D.


Diagnostic and therapeutic endoscopy, Gastroenterology, Oncology, Interventional radiology

Research Interests

Research on the diagnosis and management of pancreatobiliary diseases, chemotherapy for pancreatobiliary cancer, endotherapy for pancreatobiliary diseases.




Years Institution Degree
1998 The University of Tokyo M.D.
2007 The University of Tokyo Graducate School of Medicine Ph.D.
Years attended Institution Discipline
1998-1999 The University of Tokyo Hospital Resident/Internal Medicine
1999-2001 Asahi General Hospital Resident/Internal Medicine
2010-2012 University of California Irvine Medical Center Advanced Fellowship
Appointments and positions
Years Institution Title
2008-2009 Department of Gastroenterology, Saitama Medical University International Medical Center Assistant Professor
Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo Assistant Professor
2019- Department of Endoscopy and Endoscopic Surgery, The University of Tokyo Hospital Associate Professor
Board Certifications
Year Certifications
2015 Fellow of the Japanese Society of Internal Medicine
2008 Board Certified Gastroenterologist of the Japanese Society of Gastroenterology
2017 Board Certified Trainer of the Japanese Society of Gastroenterology
2007 Board Certified Fellow of the Japan Gastroenterological Endoscopy Society
2014 Board Certified Trainer of the Japan Gastroenterological Endoscopy Society
2008 General Clinical Oncologist by Japanese Board of Cancer Therapy
Selected Publications
  • Nakai Y, Isayama H, Sasaki T, Sasahira N, Tsujino T, Toda N, Kogure H, Matsubara S, Ito Y, Togawa O, Arizumi T, Hirano K, Tada M, Omata M, Koike K. A multicentre randomised phase II trial of gemcitabine alone vs gemcitabine and S-1 combination therapy in advanced pancreatic cancer: GEMSAP study. Br J Cancer. 106:1934-1939, 2012.
  • Nakai Y, Isayama H, Sasahira N, Kogure H, Sasaki T, Yamamoto N, Saito K, Umefune G, Akiyama D, Kawahata S, Matsukawa M, Saito T, Hamada T, Takahara N, Mizuno S, Miyabayashi K, Mohri D, Hirano K, Tada M, Koike K. Risk factors for post-ERCP pancreatitis in wire-guided cannulation for therapeutic biliary ERCP. Gastrointest Endosc. 81:119-126, 2015.
  • Nakai Y, Iwashita T, Park DH, Samarasena JB, Lee JG, Chang KJ. Diagnosis of pancreatic cysts: EUS-guided, through-the-needle confocal laser-induced endomicroscopy and cystoscopy trial: DETECT study. Gastrointest Endosc. 81:1204-1214, 2015.
  • Nakai Y, Sato T, Hakuta R, Ishigaki K, Saito K, Saito T, Takahara N, Hamada T, Mizuno S, Kogure H, Nogchi K, Ito Y, Isayama H, Koike K. Long-term outcomes of a long, partially covered metal stent for EUS-guided hepaticogastrostomy in patients with malignant biliary obstruction (with video). Gastrointest Endosc. 92:623-631, 2020.
Academic Societies
  • Japanese Society of Internal Medicine
  • Japanese Society of Gastroenterology
  • Japan Gastroenterological Endoscopy Society
  • Japan Biliary Association
  • Japan Society of Pancreatology
  • Japanese Society of Medical Oncology
  • American Society for Gastrointestinal Endoscopy
  • American Society of Clinical Oncology
Editorial Boards
  • Digestive Endoscopy, associate editor
  • Clinical Journal of Gastroenterology, associate editor

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