Hassan Abolhassani, M.D., Ph.D., currently serves as Assistant Professor of Clinical Immunology and Research Specialists in the Department of Medical Biochemistry and Biophysics at the Karolinska Institutet in Stockholm, Sweden where he also is the team leader of pediatrics primary immunodeficiency (PID) and inborn errors of immunity (IEI) research in the lab of Professor Qiang Pan Hammarström, M.D., Ph.D. Dr. Abolhassani’s translational clinical research aims to investigate the pathogenesis of primary antibody deficiency and the immune pathways involved that may help physicians and immunologists to understand genes with currently unknown functions and to aid in deciding therapeutic approaches for patients. Additionally, his work includes multidisciplinary and translational approaches for diagnosis and treatment of Ataxia-Telangiectasia. Dr. Abolhassani is recognized in the top 1% of highly cited scientific researchers in the field of immunology (Essential Science Indicators) and the world’s top 2% widely cited scientists (Scopus/Elsevier). He has received several awards, including the Isil Berat Barlan Award in primary immunodeficiency diseases, the Anna-Greta Crafoords Prize for rheumatologic research, the USERN Prize in medical sciences, the Jonas Söderquist Award in virology and immunology, and the Razi Festival Award in medical sciences, among others. Dr. Abolhassani is the president of the Middle East and North Africa Registry on Inborn Errors of Immunity, one of the largest PID/IEI cohorts worldwide, is a steering member of the J Project, a professional network of experts on PID/IEI, and a distinguished clinical immunologist collaborator of the Global Burden of Disease study led by the Institute for Health Metrics and Evaluation at the University of Washington, Seattle. Dr. Abolhassani received a M.D. from Tehran University of Medical Sciences where he also completed an internship for immune disorders at the Research Center for Immunodeficiencies. Additionally, he received a Ph.D. in clinical immunology and immunogenetics of chronic infectious and inflammatory disease from the Karolinska Institutet where he also completed his postdoctoral fellowship in single-cell multi-omics. Dr. Abolhassani holds a Master of Public Health and a Master of Philosophy from Tehran University of Medical Sciences and received a Doctor of Philosophy from the Karolinska Institutet.