Henny Otten is a Medical Immunologist and an associate professor of research with a primary research interest focused on humoral immunity including associated effector mechanisms. Henny Otten studied medical biology at the University of Amsterdam and obtained his Ph.D. at the Department of Rheumatology of the University Hospital Leiden. In 1992 he started as a post-doc at the department of Immunohematology at the University Hospital Utrecht developing molecular HLA-typing and performing research in the field of bone marrow and organ transplantation. Between 1997-2012 Henny Otten was co-director of the HLA laboratory in the UMCU, and between 1997-2000 interim head of the bone-marrow transplantation laboratory, and since 2010 he is head of laboratory for Immunoserology. Henny Otten is the leader of the national PROCARE 2.0 consortium which studies the impact of humoral allo- and auto-immunity in ~10.000 kidney transplants; a study subsidized by Dutch Kidney Foundation. Together with funding from multiple commercial partners, studies are performed on the effector functions of antibodies in relation to complement. Henny Otten holds certificates as Medical Immunologist, European Specialist in Histocompatibility & Immunogenetics, Transplantation Immunologist, and Immunologist. In close collaboration with clinicians, Henny Otten has (co-)authored >140 peer-reviewed papers with translational objectives.