Introduction of
Medical Staff

  • Professor

    Director of Early-Phase 1 Drug Development Service

    Toshio Shimizu, MD, PhD

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    Professional Experience

    • Professor

      (Nov 2024 – present)

      Department of New Experimental Therapeutics
      Director, Early-Phase 1 Drug Development Service
      Kansai Medical University Hospital

    • Associate Professor

      (Apr 2022 – Oct 2024)

      Department of Medical Oncology
      Wakayama Medical University Graduate School of Medicine
      Wakayama Medical University Hospital, Wakayama Japan

    • Head of Physicians
      (Early Phase 1 Drug Development Service)

      (Apr 2016 – Mar 2022)

      Department of Experimental Therapeutics
      National Cancer Center Hospital, Tokyo Japan

    • Associate Professor

      (Apr 2012 – Mar 2016)

      Department of Medical Oncology
      Kindai University Faculty of Medicine, Osaka Japan

    • Medical Oncology Fellowship
      ‐Division of Drug Development

      (Jun 2002 – May 2005)

      National Cancer Center Hospital, Tokyo, Japan

    • Residency
      (Internal Medicine and Medical Oncology)

      (May 1999 – May 2002)

      Kindai University Hospital, Osaka, Japan

    Educational Background

    • Phase 1 Clinical Fellow

      (Jan 2010 - Mar 2012)

      START (South Texas Accelerated Research Therapeutics),
      San Antonio, TX, USA
      Supervised phase 1 training by Dr. Anthony W. Tolcher, MD. FRCPC

    • Visiting Research Scholar

      (2010–2012)

      The University of Texas at Austin, College of
      Pharmacy, Austin, TX, USA

    • Ph.D.

      (2005)

      Kindai University Graduate School of Medicine, Osaka Japan

    • M.D.

      (1999)

      Kindai University School of Medicine, Osaka Japan
      (Japanese Government Medical License Registration)

  • Center Lecturer

    Kosuke Hamai, MD, PhD

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    Professional Experience

    • Lecturer

      (Apr 2026 – PRESENT)

      Department of New Experimental Therapeutics,
      Kansai Medical University Hospital, Osaka, Japan

    • CHIEF

      (2022-2026)

      DEPARTMENT OF RESPIRATORY MEDICINE,
      JA ONOMICHI GENERAL HOSPITAL

    • CHIEF

      (2016-2022)

      DEPARTMENT OF RESPIRATORY MEDICINE,
      HIROSHIMA PREFECTURAL HOSPITAL

    • Stuff

      (2015-2016)

      DEPARTMENT OF INTERNAL MEDICINE,
      RIKITA HOSPITAL, GYOKUSHOW KAI MEDICAL CORPORATION

    • DEPUTY CHIEF

      (2010-2015)

      DEPARTMENT OF CLINICAL ONCOLOGY,
      HIROSHIMA PREFECTURAL HOSPITAL

    • Stuff

      (2005-2010)

      DEPARTMENT OF RESPIRATORY MEDICINE,
      HIROSHIMA CITY ASA CITIZENS HOSPITAL

    • RESIDENT

      (2003-2005)

      HIROSHIMA UNIVERSITY HOSPITAL

    Educational Background

    • M.D.

      (2003)

      HIROSHIMA UNIVERSITY, Hiroshima, Japan

  • Assistant Professor

    Tatsuki Ikoma, MD

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    Professional Experience

    • Assistant Professor

      (2024-present)

      Department of New Experimental Therapeutics, Kansai Medical University Hospital, Osaka, Japan

    • Assistant Professor

      (2024-present)

      Department of Clinical Oncology, Kansai Medical University Hospital, Osaka, Japan

    • Assistant Professor

      (2023-present)

      Department of Thoracic Oncology, Kansai Medical University, Osaka, Japan

    • Residency

      (2020-2023)

      Department of Medical Oncology,
      Kobe City Medical Center General Hospital
      Department of Medical Oncology, Osaka Red Cross Hospital

    • Junior Resident

      (2018-2020)

      National Hospital Organization Osaka Minami Medical Center, Osaka, Japan

    Educational Background

    • M.D.

      (2018)

      Nara Medical University, Nara, Japan

  • Center Assistant Professor

    Ryoko Yamasaki, MD

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    Professional Experience

    • ASSISTANT PROFESSOR

      (2026-PRESENT)

      DEPARTMENT OF NEW EXPERIMENTAL THERAPEUTICS,
      KANSAI MEDICAL UNIVERSITY HOSPITAL, Osaka, Japan

    • CHIEF RESIDENT

      (2024-2026)

      Department of Experimental Therapeutics
      National Cancer Center Hospital

    • RESIDENT

      (2022-2024)

      Department of Experimental Therapeutics
      National Cancer Center Hospital

    • DEPUTY CHIEF

      (2020-2022)

      DEPARTMENT OF HEMATOLOGY,
      HAGA RED CROSS HOSPITAL

    • HOSPITAL ASSISTANT PROFESSOR

      (2017-2020)

      DEPARTMENT OF HEMATOLOGY,
      JICHI MEDICAL UNIVERSITY HOSPITAL

    • CLINICAL ASSISTANT PROFESSOR

      (2014-2017)

      DEPARTMENT OF HEMATOLOGY,
      JICHI MEDICAL UNIVERSITY HOSPITAL

    • CLINICAL ASSISTANT PROFESSOR

      (2012-2014)

      DEPARTMENT OF HEMATOLOGY,
      SAITAMA MEDICAL CENTER, JICHI MEDICAL UNIVERSITY

    • INTERNAL MEDICINE RESIDENT

      (2009-2012)

      TOTTORI PREFECTURAL CENTRAL HOSPITAL

    • RESIDENT

      (2007-2009)

      TOTTORI PREFECTURAL CENTRAL HOSPITAL

    Educational Background

    • M.D.

      (2007)

      TOTTORI UNIVERSITY, tottori, Japan

  • Lecturer

    Yuta Yamanaka, M.D., Ph.D.

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    Professional Experience

    • Lecturer

      (2024–present)

      Department of New Experimental Therapeutics, Early-Phase 1 Drug Development Service, Kansai Medical University Hospital

    • Chief Physician and Director of Medical Education

      (2022–present)

      Department of Thoracic Oncology,
      Kansai Medical University

    • Assistant Professor and Chief of the Inpatient Ward

      (2019-2022)

      Department of First Internal Medicine,
      Kansai Medical University

    • Resident Physician

      (2013–2019)

      First Department of Internal Medicine,
      Kansai Medical University

    • Resident

      (2011–2013)

      Kansai Medical University Hospital

    Educational Background

    • Ph.D.

      (2019)

      Internal Medicine, Kansai Medical University Graduate School

    • M.D.

      (2011)

      Kansai Medical University, Osaka, Japan

  • Center Assistant Professor

    Kohei Nagata, M.D., Ph.D.

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    Professional Experience

    • Assistant Professor

      (2026-Present)

      Department of Clinical Oncology, Cancer Center, Kansai Medical
      University Hospital
      Department of New Experimental Therapeutics,
      Kansai Medical University Hospital

    • Assistant Professor

      (2025)

      Third Department of Internal Medicine,
      Toyama University Hospital

    • Clinical Staff

      (2023-2024)

      Department of Medical Oncology,
      Kyoto University

    • Visiting Researcher

      (2023-2024)

      Department of Molecular Pathology,
      Tokyo University

    • Special Research Fellow

      (2021-2022)

      Division of Stem Cell Pathology Center for Experimental Medicine and Systems Biology,
      The Institute of Medical Science,
      Tokyo University

    • Special Research Student

      (2019-2020)

      Division of Stem Cell Pathology Center for Experimental Medicine and Systems Biology,
      The Institute of Medical Science,
      Tokyo University

    • Research Associate

      (2018-2019)

      Third department of Internal Medicine,
      Toyama University Hospital

    • (2017-2018)

      Department of Gastroenterology,
      JA Toyama Kouseiren Takaoka Hospital

    • (2016-2017)

      Department of Gastroenterology,
      Toyama Red Cross Hospital

    • Clinical Staff

      (2015-2016)

      Third Department of Internal Medicine,
      Toyama University Hospital

    • Resident

      (2013-2014)

      Kanazawa Medical Center Hospital

    Educational Background

    • PhD.

      (2023)

      Graduate School of Medicine,
      University of Toyama

    • M.D.

      (2013)

      University of Toyama, Toyama, Japan

  • Assistant Professor

    Yoshikazu Hayashi, M.D.

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    Professional Experience

    • (2025–present)

      Department of New Experimental Therapeutics,
      Early-Phase 1 Drug Development Service,
      Kansai Medical University Hospital

    • Assistant Professor

      (2024-present)

      Department of Otorhinolaryngology,
      Kansai Medical University Hospital

    • Clinical Staff

      (2023-2024)

      Department of Otorhinolaryngology,
      University of the Ryukyus Hospital

    • Fixed-term Assistant Professor

      (2021-2023)

      Department of Otorhinolaryngology,
      Kansai Medical University Hospital

    • Resident

      (2019-2021)

      Kansai Medical University Hospital

    Educational Background

    • M.D

      (2019)

      Kansai Medical University, Osaka, Japan

  • Director of Phase 1 Pharmacy

    Masafumi Ui, PharmD

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    Professional Experience

    • Pharmacist

      Pharmacy Department,
      Kansai Medical University Hospital

    Educational Background

    • Faculty of Pharmaceutical Sciences

      Department of Pharmacy,
      Kyoto Pharmaceutical University

    • Master’s Course in Clinical Pharmacy

      Kyoto Pharmaceutical University Graduate School of Pharmaceutical Sciences

  • Director of Phase 1 Nursing

    Chikako Ozawa, RN

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    Professional Experience

    • Chief Nursing Officer

      International Cancer New Drug Development Center,
      Kansai Medical University Hospital

    Educational Background

    • Kansai Gaidai University College of International Language and Communications

    • School of International Language and Communications

    • Osaka City Nursing School

    • University of Louisville, Louisville, KY, USA

    • Tulane University, New Orleans, LA, USA

    Licenses

    • Certified International Nurse of Japan International Nursing Administrator (NiNA)