Dieter Haffner is a professor of pediatrics and head of the Department of Pediatric Kidney, Liver, Metabolic and Neurological Diseases and is coordinating the Center for Congenital Kidney Diseases at the Center for Rare Diseases at Hannover Medical School. His main interests are the genetic and mechanistic exploration of rare kidney diseases and mineral and bone disorders in children with chronic kidney disease (CKD-MBD). He is President of the European Society for Paediatric Nephrology (ESPN), IPNA Executive Councilor, Associate Editor of the IPNA Journal Pediatric Nephrology and the ERA Journal Clinical Kidney Journal, and co-chair of the Workgroup Immune Glomerulopathies of the European Network for Rare Kidney Diseases (ERKNet). He is a past chair of the IPNA Best Practices and Standards committee, the IPNA Publication Committee, the ESPN CKD-MBD working group, and the ERKNet - Guidelines & Pathways Task Force. He has led, or been heavily involved in, several randomized controlled clinical trials, patient registries, and national, European and international Clinical Practice Guidelines (AWMF, ESPN, ERKNeT, and IPNA). He has also published more than 300 original scientific articles, reviews, editorials and book chapters.