John Valliant, Ph.D.

Chief Executive Officer

Dr. Valliant is Founder and Chief Executive Officer of Fusion Pharmaceuticals. Dr. Valliant has been instrumental in securing both investment and scientific and medical collaborations with the industrial and academic partners of Fusion.

Prior to Fusion, Dr. Valliant founded the Centre for Probe Development and Commercialization (CPDC), a radiopharmaceutical research and development centre of excellence established in 2008 through funding from the Federal and Provincial governments, industry and academic partners. The CPDC is focused on discovering, developing and distributing the next generation of molecular imaging probes. The CPDC also plays an important role in Canada’s health care system, manufacturing and delivering a reliable, daily supply of imaging probes to hospitals and clinics nationally and internationally.
Dr. Valliant is also a Professor in the Department of Chemistry and Chemical Biology at McMaster University.

In 2009, Dr. Valliant was selected as one of Canada’s Top 40, Under 40, a distinction that recognizes his work at CPDC and McMaster University to advance molecular imaging probe technologies, improve patient care and spur economic growth through the commercialization of Canadian technologies. In 2015, he received the Brockhouse Canada Prize for Interdisciplinary Research in Science and Engineering from NSERC, recognizing his contribution to a team of researchers from physics, chemistry and nuclear medicine, who developed a breakthrough technology that uses hospital-based cyclotrons to produce critical medical isotopes.

Dr. Valliant completed his PhD at McMaster University, and followed with a post-doctoral fellowship under the joint supervision of professors Alun G. Jones (Harvard) and Alan Davison (MIT).

Eric Burak, Ph.D.

Chief Technology Officer

Dr. Burak has more than 20 years of pharmaceutical research and development experience in both biotechnology and large pharmaceutical companies. Before joining Fusion, he was Vice President of Development at Theracos Inc., where he was responsible for all research, clinical development and manufacturing activities for a company developing drugs to treat Type 2 diabetes. Previous positions include Vice President of Preclinical and Early Clinical Development at Rib-X Pharmaceuticals, Inc., a venture-funded antibiotic company, and Director of Drug Metabolism and Pharmacokinetics at Guilford Pharmaceuticals, Inc.

Dr. Burak’s experience has focused on integrating discovery and development processes to accelerate the identification and development of new therapeutic agents. He has submitted 14 Investigational New Drug Applications (INDs) and has developed two approved products across multiple therapeutic areas including oncology, cardiovascular, antibiotics, diseases of the central and peripheral nervous system, anesthesia/sedation, diabetes, and wound healing.

Dr. Burak holds a PhD in Analytical Chemistry from Temple University and a BSc in Chemistry from Drexel University.

Christopher Leamon, Ph.D.

Chief Scientific Officer

Dr. Leamon was most recently executive director, radioligand drug discovery at Novartis. Prior to Novartis, he was vice president, discovery research at Advanced Accelerator Applications, a subsidiary acquired by Novartis in 2018. Before that, he held several positions within Endocyte, including vice president of research and most recently, president. At Endocyte he contributed to the research and development of the company's PSMA-targeted radioligand therapy program for metastatic castration-resistant prostate cancer prior to the acquisition by Novartis. Prior to Endocyte, Dr. Leamon held various research and development roles at Ionis Pharmaceuticals and GlaxoSmithKline. Dr. Leamon obtained a bachelor of science degree in chemistry from Baldwin Wallace University, and a doctor of philosophy degree in chemistry, with a concentration in biochemistry, from Purdue University.

Eric S. Hoffman, PH.D.

Senior Vice President, Business Development

Dr. Hoffman has more than 15 years' experience in the biotechnology industry, most recently acting as chief business officer at Vicarius Pharma, where he led successful business development efforts to in-license European commercialization rights for oncology and other products. Prior to Vicarius, he was chief business officer of Genocea Biosciences where he led business development, alliance management and commercial operations. Prior to Genocea, he was vice president of corporate and business development and executive director of investor relations and corporate communications at Idenix Pharmaceuticals until the acquisition by Merck & Co. Dr. Hoffman was previously director of corporate and business development and director of investor relations at Biogen Idec. He also previously worked for more than five years on Wall Street as a biotechnology equity analyst at JPMorgan Securities and a biotechnology research associate at Bear Stearns International. Dr. Hoffman was a post-doctoral research associate in the Department of Immunobiology at King's College in London. He holds a Ph.D. in molecular, cellular and developmental biology with a focus on T cell immunology from Yale University, and a B.S. in biology from Trinity University.

Maria Stahl

Chief Legal Officer

Ms. Stahl brings to Fusion a breadth of legal and operational experience within the biopharmaceutical industry. Prior to joining Fusion, Ms. Stahl held executive leadership roles at Tetraphase Pharmaceuticals, including chief business officer and general counsel. Before joining Tetraphase, Ms. Stahl was the senior vice president, general counsel of Idenix Pharmaceuticals. Ms. Stahl began her career with the law firm Wilmer Cutler Pickering Hale and Dorr LLP. Ms. Stahl holds a bachelor of arts from Providence College and a juris doctorate from Yale Law School.

Dmitri Bobilev, M.D.

Chief Medical Officer

Dr. Bobilev joined Fusion from Checkmate Pharma, where he was vice president, head of clinical development until the company’s acquisition by Regeneron earlier in 2022. At Checkmate, he was responsible for clinical development strategy for vidutolimod. Prior to Checkmate, Dr. Bobilev was vice president, head of clinical development at Vedanta Biosciences. He previously held clinical development leadership roles with Tesaro and Sanofi. Dr. Bobilev spent more than 10 years as a practicing medical and radiation oncologist.