In this episode, we hear from Václav Papež, Research Associate at University College London (UCL), about the onboarding experience of UCL and UK Biobank as an EHDEN Data Partner. We discuss some of his latest research on defining phenotypes in data from electronic health records, his experiences with mapping data to the OMOP CDM with The Hyve in the IMI BigData@Heart project, as well as the recent EHDEN E-THON (Evidence-a-thon) and his experiences in participating in medical evidence generation in the EHDEN Network.