Justin Gainor

Current Role

Dr. Justin Gainor is a medical oncologist specialising in thoracic malignancies and early-phase clinical trials at Massachusetts General Hospital, USA and is currently an associate professor of medicine at Harvard Medical School. In addition, he is the director of the Center for Thoracic Cancers and the director of targeted immunotherapy in the Henri and Belinda Termeer Center for Targeted Therapies at Massachusetts General Hospital.

Clinical focus and interest:

Dr. Gainor’s research focuses on the clinical development of novel targeted therapies and immunotherapies. His work in translational research is centered around developing predictive biomarkers and elucidating mechanisms of resistance to therapy.


Dr. Gainor received his medical degree from Harvard Medical School and subsequently completed his training in internal medicine at Massachusetts General Hospital and his training in medical oncology in the combined Dana-Farber/Mass General Brigham fellowship program. In addition to his appointment at Massachusetts General Hospital, He has led a number of Phase I–III clinical trials and is involved in multi-institutional collaborative efforts focused on biomarker discovery. He has published more than 300 research publications.


Dr. Gainor is affiliated with Massachusetts General Hospital and is a member of the Dana-Farber/Harvard Cancer Center. He is also a member of the Translational Research and Precision Medicine Working Group of the European Society for Medical Oncology.