Todd Mackenzie Allen (1970 – 2024) was a Canadian-born immunologist and virologist at the Ragon Institute of MGH, MIT, and Harvard, and a Professor of Medicine at Harvard University. He was a specialist in HIV vaccine design and the sequence evolution and diversity of HIV and hepatitis C virus (HCV). Towards the end of his career, his work was focused on developing novel immunotherapeutic approaches towards a functional cure of HIV, including chimeric antigen receptor (CAR) T cell immunotherapy and gene editing approaches capable of protecting against HIV infection.
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