A comprehensive portal site for Medical Innovation Support Office (MEDISO).Medical Innovation Support Office

Masakazu Masujima

Partner, Mori Hamada & Matsumoto

Masa is a guru of startup legal advisory space in Japan. Based on the experiences at Palo Alto office of Wilson Sonsini Goodrich & Rosati, his advice is West Coast style; progressive, risk-base and proactive. Through more than 2 dacades of dedication to the startup space, he has advised IPOs, M&As and major cross-border fundraising for may startups, including biotech and healthcare ones, and have also worked with entrepreneurs through a variety of touch situation, such as disputes between founders, problems with investors as well as intellectual property disputes. Masa has served as a council member of numerous Government committees, such as Regulatory Reform Promotion Council, the Regulatory Sandbox Committee, the Digital Market Competition Council and the Industrial Structure Council. He is admitted to NY bar and Japan bar, and a licensed patent attorny in Japan.

Tomokazu Ichikawa

Director, TM Research and Investments Pte. Ltd.

Leveraged cross-functional expertise in business strategy and legal to work on strategy development, M&A, and investments in the medical device sector. Practiced law at Nagashima, Ohno and Tsunematsu, handling M&A and other corporate matters. Worked for McKinsey & Company and Hoya Corporation. Completed several acquisitions and investments in the US and Europe in the medical device business. Experienced managing a healthcare service operator in India. Currently, helping AI Medical Service, an artificial intelligence software startup for endoscope and CUC, a healthcare service provision related company. Spent more than 10 years in Singapore and familiar with business in Southeast Asian countries. Graduated from Waseda University, London Business School's Masters in Finance, and Cambridge's MBA. Attorney at law admitted in Japan.

Rou Irisawa

IRISAWA Consulting LLC

Worked at Chugai Pharmaceutical Co., Ltd. for 27 years, primarily in antibody drug research and development, CMC regulatory affairs, and quality assurance, from preclinical trials stage to BLA stage. Involved in the BLA of Japan, US and EU approval for the CTD-Q of Actemra, Japan's original first antibody drug. And also involved in Japan BLA for several biologics Genentech original. Since 2017, involved in the development of many new modalities, including three SAKIGAKE designated cell products, and participated in 21 times PMDA consultations responsible for CMC regulatory and QA for cell products and gene therapy products. In 2023, became independent as a CMC regulatory consultant. Author of ""CMC Pharmaceutical Design - CMC Pharmaceutical Strategy in the Era of New Modality Pharmaceuticals"" (Yakuji Nipposha, 2022), and is the overall supervisor of the Japanese translation of A-CELL (CMC Development Guidance for CAR-T). Fellow at Tama University's Medical Care Solutions Research Institute, and a top performer in the regular course of Pharmaceutical Evaluation Science at the University of Tokyo Graduate School of Pharmaceutical Sciences in 2024. Certified in generative AI skills (November 2025).　Currently involved in various projects, including serving as CMC lecturer at seminars on how to proceed with the development of CMC for antibody drugs, cell products, gene therapy products, etc　for small company to semi-major company.

Hiroki Yamada

Medii, Inc. CEO, M.D.,Ph.D.

Kumi Sakurai

早稲田大学大学院理工学研究科で生体工学を専攻後、慶應義塾大学病院で10年以上にわたり血液研究に従事。その後、外資系医療機器メーカーであるベックマンコールター（2005年～）、日本メドトロニック（2007年～）、セントジュードメディカル（現アボットメディカル、2015年～）のマーケティング部門にて、医療機器の市場導入や事業戦略を担当。2019年、医療機器・ヘルスケア機器の開発支援を専門とするインキュベーター、プレモパートナー株式会社を共同創業。研究者・スタートアップ・大企業を対象に、事業戦略策定から薬事・保険償還・上市までを一気通貫で支援し、国内外のネットワークを活かして医療機器の事業化を推進している。
文部科学省　科学技術・学術審議会専門委員、東京都AMDAPカタライザー
早稲田大学大学院修了（工学修士）。金沢工業大学大学院修了（MBA）

After earning a master’s degree in Biomedical Engineering from Waseda University, Kumi Sakurai engaged in over ten years of hematology research at Keio University Hospital. She then transitioned to the medical device industry, joining Beckman Coulter in 2005, Medtronic Japan in 2007, and St. Jude Medical (now Abbott Medical) in 2015, where she worked in marketing and business strategy for innovative medical technologies. In 2019, she co-founded Premo Partners Inc., an incubator specializing in the development and commercialization of medical and healthcare devices. Premo Partners supports researchers, startups, and large corporations throughout the entire innovation process—from business strategy formulation, market analysis, and regulatory and reimbursement planning to commercialization. Leveraging extensive domestic and international networks, the company provides end-to-end support to accelerate the delivery of essential medical technologies to patients and healthcare professionals. Through its comprehensive expertise in regulatory pathways, evidence generation, and global market access, Premo Partners plays a vital role in fostering Japan’s MedTech ecosystem and bridging it with the global healthcare innovation community.