Gregor Andelfinger received his MD from the University of Ulm (Germany) and his pediatric specialty at the University of Geneva. After his pediatric cardiology fellowship, he trained in Cardiovascular Genetics at the Cincinnati Children’s Hospital and Molecular Cardiovascular Biology at the IRCM, Montréal. Since 2006, he has established the first Canadian biobank specifically geared towards the investigation of the genetics of congenital heart disease in a province-wide effort. His main interest is to characterize the genetic architecture underlying Mendelian and complex traits in congenital heart disease. His laboratory uses state-of-the-art technologies for gene discovery and genotype-phenotype correlation. The focus of the study funded by Génome Québec will lie on diseases of the aortic valve as well as a common complex lesion called tetralogy of Fallot. For both lesions, current medical and surgical therapies can provide adequate relief of symptoms, but insight into disease pathogenesis is very limited. Another line of investigation will aim to reproduce such phenotypes in animal models. Also, the study will address the question how to relate genetic data stemming from interrogation of the entire genome back to patients and their families.