Professor Andrew Gennery works at the Translational and Clinical Research Institute, Newcastle University and is an honorary consultant at the Great North Children’s Hospital, Newcastle upon Tyne, UK, in Paediatric Immunology and Haematopoietic Stem Cell Therapies. His clinical training was in Newcastle and London, and he spent a year working in the laboratory at Necker Hospital, Paris, under Anne Durandy and Alain Fischer, where he was part of the team that discovered the first genetic cause of autosomal recessive hyper IgM, Activation-induced Cytidine Deaminase (AID) Deficiency. He has published widely, with over 290 articles on primary immunodeficiency, treatment and outcomes, as well as chapters in major text books. He has led or co-authored numerous disease-specific consensus statements and management guidelines. He is PID sub-section editor of the Orphanet Journal of Rare Diseases, Associate Editor for Frontiers in Immunology and Editorial Board member of Journal of Clinical Immunology. He is currently paediatric lead on the UKPID Registry Committee, Chair of the ESID Clinical Working Party, CIBMTR Co-Chair of Primary Immune Deficiencies, Inborn Errors of Metabolism and other NMMD Working Committee and Chair, ERN-RITA Guidelines Working Party.