Raif S. Geha

Raif S. Geha is a distinguished professor of immunology at Harvard University, where he leads a major research program focused on the molecular and cellular basis of immune disorders. He earned his medical degree and completed his clinical training in pediatrics and immunology before establishing his independent research career. Geha’s research centers on understanding the mechanisms underlying primary immunodeficiencies and autoimmune diseases, with a particular emphasis on T-cell and B-cell function, immune cell interactions, and allergic sensitization. His recent work has significantly advanced the understanding of atopic dermatitis and food anaphylaxis, elucidating roles for basophils, interleukin-4, and DOCK8 in regulating mucosal immunity and hypersensitivity responses. He has made seminal contributions to the field of IgE-mediated allergic diseases, uncovering how environmental exposures such as Staphylococcus aureus can exacerbate allergic outcomes. With an h-index of 119 and over 830 publications, his work is widely cited and has shaped both clinical and basic immunology. Geha’s research continues to appear in high-impact journals such as Immunity and Annals of Allergy, Asthma & Immunology, reflecting his ongoing influence in deciphering immune dysregulation and identifying potential therapeutic targets for allergic and autoimmune conditions.