Day One Biopharmaceuticals, Inc. Appoints Michael Vasconcelles as Head of Research and Development

Published: 2025-06-10 10:35:53 ET DAWN

Published on 06/10/2025 at 10:35

Day One Biopharmaceuticals, Inc. announced that Michael Vasconcelles, M.D., has joined the Company as Head of Research & Development (R&D). As Head of R&D and a member of the Executive Leadership Team, the Company?s research, development and medical affairs infrastructure will report to Dr. Vasconcelles. Dr. Vasconcelles?

experience spans more than 25 years in oncology research and development as an academic hematologist/oncologist and as an industry leader at both large pharmaceutical and emerging biotechnology companies. Most recently, he was the Executive Vice President and Head of Research, Development, and Medical Affairs at ImmunoGen. He was instrumental in transforming the company from primarily a clinical development and U.S.-focused commercial stage organization to a vertically integrated, global biotech enterprise.

This transformation was accomplished through reinvestment in ImmunoGen?s research infrastructure, and the globalization of product launch and lifecycle management investment to optimize the commercialization of ELAHERE (mirvetuximab soravtansine-gynx). Prior to ImmunoGen, he served as Chief Medical Officer and Head of the Medical and Scientific Organization at Flatiron Health, a subsidiary of the Roche Group. Prior to Flatiron Health, Dr. Vasconcelles was Chief Medical Officer at Unum Therapeutics after leading the Oncology Therapy Area Unit at Takeda for several years.

Earlier in his career, he oversaw the clinical development of Genzyme?s transplant and oncology portfolio as Group Vice President and Global Therapeutic Area Head of Transplant and Oncology. Following Sanofi?s acquisition of Genzyme, he led Personalized Medicine and Companion Diagnostics at Sanofi Oncology. In addition to Dr. Vasconcelles?

new role as Head of Research and Development at Day One, he continues to serve as an Independent Director at Kura Oncology Inc. and Molecular Partners AG. Dr. Vasconcelles earned both his B.A., and M.D., from Northwestern University, where he serves on the Executive Committee of the Medical Alumni Association for the Feinberg School of Medicine. During the period from 1996-2021, Dr. Vasconcelles held a faculty appointment at the Harvard Medical School, where he completed all of his postgraduate training, and was an associate physician at the Beth Israel Hospital, the Brigham and Women?s Hospital and the Dana-Farber Cancer Institute.