Caitlin Norris-Grey

Caitlin Norris-Grey joined Flagship Pioneering as an Associate with Pioneering Medicines, following the Flagship Fellowship in 2024. She works on early-stage therapeutic concept development, drawing on a background that spans clinical medicine, translational research, and public health.

She trained at University College London, earning her medical degree alongside a BSc in Infection, Immunology and Cell Pathology. During this time, she conducted research in a rheumatology lab, where she explored B-cell phenotypes and treatment responses in autoimmune disease using both wet-lab and computational approaches.

She went on to complete academic clinical training in London, delivering patient care in clinical settings spanning emergency medicine, geriatric medicine, surgery, and transplant medicine. During this time, Caitlin worked at the Royal Free Hospital on projects related to parvovirus B19 in transplant recipients, COVID-19 in dialysis patients, and HIV-related cardiovascular risk, merging clinical and genomic data. While working in a learning disability psychiatry clinic, she conducted research on reducing psychotropic medication overuse. She also contributed to national health system studies on the relationship between workforce experience, patient safety data, and hospital performance, exploring impacts on care and outcomes.

Caitlin earned an MPH degree at the Harvard T.H. Chan School of Public Health, specializing in Quantitative Methods. During this time, she worked with the Center of Communicable Disease Dynamics, leading a geospatial analysis of measles vaccination coverage across Massachusetts in partnership with the state’s Department of Public Health, to identify areas at risk of outbreaks.