Anselm Uebing studied medicine at Heinrich Heine University in Düsseldorf. Thereafter he completed his training as a pediatrician and pediatric cardiologist at University Hospital in Kiel.  From 2004 to 2006 Anselm Uebing received clinical and scientific training in the treatment of adults with a congenital heart at the Royal Brompton Hospital in London and specialized as a "London -Toronto Fellow” in Adult Congenital Heart Disease. From 2006 to 2010, he worked as a senior physician at the Clinic for Congenital Heart Defects and Pediatric Cardiology in Kiel, Germany. In 2010, he moved to the Royal Brompton Hospital London, where he became head of the cardiac catheterization laboratory in the adult congenital heart defect unit. In 2017 he became head of the Department of Pediatric and Adolescent Medicine - Pediatric Cardiology at Münster University Hospital. Since April 2019, Anselm Uebing has been Director of the Clinic for Congenital Heart Defects and Pediatric Cardiology at Christian Albrechts University of Kiel (CAU). Anselm Uebing is also a DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung, German Centre for cardiovascular research) scientist at the Hamburg/Kiel/Lübeck site.

Gerhard-Paul Diller studied medicine at the Ludwig-Maximilians University in Munich and he received much of his clinical training in Great Britain, at the Royal Brompton Hospital, London. In his research, the certified ACHD expert focuses on adults with congenital heart disease and pulmonary hypertension. In addition, he holds a Master’s degree (M.Sc.) in Health Economics Policy and Management from the London School of Economics, London, UK. Gerhard-Paul Diller has been Director of the Clinic for Cardiology III: Congenital Heart Defects (EMAH) and Valvular Heart Disease at the University Hospital Münster since July 2024. Gerhard-Paul Diller is an executive board member of both the European Heart Rhythm Association and the ESC-Working-Group Grown Up Congenital Heart Disease. Furthermore, he is the deputy chair of the AG 9 Kongenitale Herzfehler (working group on congenital heart disease) of the German Cardiac Society (DGK). Gerhard-Paul Diller is a member of the Competence Network for Congenital Heart Defects where he is also a member of the Review Board.

After graduating and earning his doctorate at the Hannover Medical School, Hashim Abdul-Khaliq spent three years in the Department of Neonatology of the Pediatric Hospital at Auguste-Viktoria-Klinikum Berlin. For the next twelve years, he joined the Department of Congenital Heart Disease – Pediatric Cardiology at Deutsches Herzzentrum Berlin, as serving as a senior physician for the past 6 years. After his habilitation at Humboldt-Universität (Berlin), he was appointed to the Department of Pediatric Cariology at Saarland University Hospital. Hashim Abdul-Khaliq is a member of the German Society of Pediatric Cardiology (DGPK), the German Cardiac Society (DGK) and the Association for European Paediatric and Congenital Cardiology (AEPC). The pediatric cardiologist additionally advises the patient associations as a member of the medical-scientific board of Marfan Hilfe (Deutschland) e. V., as well as of the advisory board of the Bundesverband Herzkranke Kinder e. V. Hashim Abdul-Khaliq is a member of the Competence Network for Congenital Heart Defects (KNAHF), which he represented as Chairman of the Board from 2009 to 2022. He is a member of the KNAHF Steering Committee and has been Vice-Chair of the Research Network since June 2022.

Boulos Asfour began his medical career after studying medicine in Giessen in the Department of Thoracic, Cardiac and Vascular Surgery at the Westphalian Wilhelms University of Münster (WWU). In 1993 he trained as a visiting doctor at the Children's Hospital Boston (Harvard Medical School) in pediatric cardiac surgery. After receiving his doctorate in 1995, a research fellowship took him to the Johns Hopkins University in Baltimore, Maryland. In 1998, Boulos Asfour became a senior physician at the WWU. In 2002, the habilitated pediatric cardiac surgeon moved to the German Pediatric Heart Center (DKHZ) in St. Augustine. From 2006 to 2019 he was head physician of the Pediatric Cardio Surgery Department and Medical Director of the German Pediatric Heart Center (DKHZ) at the Asklepios Pediatric Hospital St. Augustin. In October 2019, he took over as Head of the Department of Pediatric Cardiac Surgery at the redesigned German Pediatric Heart Centre in Bonn, University Hospital Bonn. Boulos Asfour teaches at the University of Münster as well as at the University of Duisburg Essen and at the Semmelweis University in Budapest. He is a member of the German Society for Thoracic and Cardiovascular Surgery (DGTHG) as well as of the Competence Network for Congenital Heart Defects.

Felix Berger studied medicine at the Christian-Albrechts University in Kiel (CAU). After his further training in pediatric cardiology at the University Children's Hospital in Kiel, he was one of the co-founders of the Department of Congenital Heart Defects and Pediatric Cardiology at the German Heart Institute Berlin (DHZB) in 1988.  In 1991 he received his doctorate magna cum laude under the supervision of Prof. Dr. Peter E. Lange, the initiator of the National Register for Congenital Heart Defects. After his habilitation in 2003 at the University of Zurich, he was appointed University Professor for Pediatric Cardiology at the Charité - Universitätsmedizin Berlin in 2004. His research focuses on invasive diagnostics and interventional therapy of congenital heart defects. Felix Berger is a member of the German Society of Pediatric Cardiology (DGPK), the German Society of Cardiology - Cardiovascular Research (DGK), the Swiss Society of Pediatrics (SGP), the Swiss Society of Cardiology (SGK), the European Society of Cardiology (ESC), the Association of European Paediatric Cardiologists (AEPC) and the Russian Scientific Society of Interventional Radiology and Endovascular Surgery. He is also a member of the Scientific Advisory Board of the Fördergemeinschaft Deutsche Kinderherzzentren e. V. Felix Berger is a member of the Competence Network for Congenital Heart Defects and a member of the research network’s Steering Committee.

Robert Cesnjevar studied medicine at the University of Erlangen and began his surgical career in the Cardiac Surgery Department of the University Hospital Erlangen. After completing his doctorate, he had further trained under the supervision of the pediatric cardiac surgeon Marc de Leval in cardiothoracic surgery in London, first at the Harley Street Clinic and then at the Hospital for Sick Children. From 2005 to 2008, the habilitated specialist in cardiac surgery and DGHTG-certified pediatric cardiac surgeon headed the Clinic for Pediatric Cardiac Surgery at the University Heart and Vascular Centre Hamburg at the University Medical Centre Hamburg Eppendorf (UKE). In 2008, he moved to the Pediatric Cardiac Surgery Department at Erlangen University Hospital, which he headed until 2021. Since July 2021, he has been Associate Professor of Pediatric Cardiac Surgery at the University of Zurich and Chief Physician of Cardiac Surgery at the Children's Hospital Zurich. In addition to outcome analyses of complex cardiac malformations and quality assurance of pediatric cardiac surgery, his research focuses on organ replacement therapy in children and the dynamization of single-chamber circulation (Fontan-RVAD). For his many years of patient-orientated research, he has been honored several times. In 2013, he was the first pediatric heart surgeon to receive the Fritz Acker Foundation Award from the German Society of Cardiology (DGK). Robert Cesnjevar is a member of the Competence Network for Congenital Heart Defects and a member of the research network’s Steering Committee.

Marc-Phillip Hitz studied medicine in Göttingen. After receiving his doctorate in 2004, he worked as a pediatric resident at the Hannover Medical School. After research stays combined with clinical work at Sainte Justine Hospital, Montreal, Canada and in the UK at the Wellcome Sanger Institute, he obtained his PhD in addition to his doctorate at the University of Cambridge. In 2014, he moved to the Department of Congenital Heart Defects and Pediatric Cardiology at the University Hospital Schleswig-Holstein (UKSH), Kiel Campus, as a pediatric specialist. There he led a research group on the genetics of congenital heart defects and completed his residency in human genetics in 2017. In 2019, Marc-Phillip Hitz was appointed to the endowed professorship of the German Center for Cardiovascular Research (DZHK) for the genetics of structural heart disease in Kiel. In 2021, the University of Oldenburg appointed him to the professorship of Medical Genetics at Faculty VI Medicine and Health Sciences. Since 2021, the physician has also been director of the University Institute for Medical Genetics at Oldenburg Hospital. Marc-Phillip Hitz has received several awards for his research. For example, the German Society for Pediatric Cardiology (DGPK) honored him with the 2017 Science Award for the discovery of three new genes involved in the development of cardiac malformations. He is a member of the Competence Network for Congenital Heart Defects and a member of the research network’s Steering Committee.

After studying medicine at the Friedrich-Schiller University of Jena and at the Humboldt-Universität zu Berlin, Katharina Schmitt completed her doctorate on the topic of “Retrospective analysis of the diagnostic quality of magnetic resonance mammography with special regard to economic aspects” under the supervision of Prof. Dr. med. Werner A. Kaiser at the Friedrich-Schiller University of Jena. Katharina Schmitt, a specialist in pediatric and adolescent medicine and pediatric cardiology, qualified as a professor with a research paper on “Hypothermia for organ protection” in 2011. Since 2012, she has been a senior research fellow and associate professor at the Department of Congenital Heart Disease – Pediatric Cardiology at Deutsches Herzzentrum Berlin. There, she has been the head of the study group on experimental pediatric cardiology since 2005. Her research focus includes neuroprotection in pediatric cardiology, basic research with respect to neuroprotection, as well as psychomotor assessments in children with congenital heart disease. In 2023, she was appointed by the German Heart Centre of the Charité (DHZC) as the first W3 professor for developmental pediatrics in cardiac medicine in Germany. At the same time, Katharina Schmitt also took over as Head of Psychocardiology at the DHZC. She is a member of the Competence Network for Congenital Heart Defects and a member of the research network’s Steering Committee.

Matthias Sigler is a pediatrician with additional qualifications in pediatric cardiology, neonatology, pediatric intensive care, and ACHD cardiology. He studied medicine at the Julius Maximilian University of Würzburg, the Leopold Franzens University of Innsbruck, and the Philipps University of Marburg, as well as history and art history. He completed his residency in pediatrics at the University Hospital of RWTH Aachen in 2001. From 2001 to 2024, Matthias Sigler worked as a senior physician at the Heart Center of the University Hospital of Göttingen. Since October 1, 2024, he has been Head of the Department of Pediatrics and Adolescent Medicine - Pediatric Cardiology at the University Hospital Münster (UKM). One focus of his research is the development of new and improved interventional therapies for congenital heart defects. Matthias Sigler has established an international research laboratory at the Heart Center of the University Medical Center Göttingen to investigate the biocompatibility of cardiovascular implants. In 2016, he was awarded the Science Prize of the German Society for Pediatric Cardiology (DGPK) for his research in the field of heart valve implants. Another focus of his research and teaching is the morphology of congenital heart defects. Matthias Sigler is a board member of the Working Group on Cardiovascular Morphology of the Association of European Pediatric Cardiologists (AEPC). His clinical interests include diagnostic and interventional cardiac catheterization, the care of patients with complex and particular cyanotic heart defects, including pulmonary arterial hypertension, as well as neonatology and intensive care medicine. He is a member of the Competence Network for Congenital Heart Disease and a member of the Steering Committee of the Research Network since July 2022.

Oktay Tutarel graduated in medicine at the Hannover Medical School (MHH), where He also completed his residency in internal medicine and cardiology. After a fellowship at the Adult Congenital Heart Centre and National Centre for Pulmonary Hypertension at the Royal Brompton Hospital in London (Great Britain), he qualified as a professor with research conducted on the subject of “biomarkers in adults with congenital heart disease” in 2014. In 2016, the certified ACHD specialist transferred to the German Heart Center Munich. Until June 2024, he served as Chief Physician at the Department of Congenital Heart Defects and Pediatric Cardiology and as Professor for Congenital Heart Defects in Adults at the Technical University of Munich. In July 2024, he became Director of the Center for Adults with Congenital Heart Defects (EMAH) at the Department of Congenital Heart Defects - Pediatric Cardiology at the German Heart Center, Charité (DHZC). He was appointed Professor of "Adults with Congenital Heart Defects" at Charité - Universitätsmedizin Berlin.

He is an elected member of the nucleus of the Work Group on “Congenital Heart Disease in Adulthood” (AG „Kongenitale Herzfehler im Erwachsenenalter“) of the German Cardiac Society (DGK) and a member of the nucleus of the “ESC Working Group on Grown Up Congenital Heart Disease” of the European Society of  Cardiology (ESC). As a representative of the DGK, he has been involved in the ACHD Task Force since 2018. Oktay Tutarel is a member of the Competence Network for Congenital Heart Defects and a member of the research network’s Steering Committee.