The Netherlands Cancer Institute (Stichting Het Nederlands Kanker Instituut – Antoni Van Leeuwenhoek Ziekenhuis, NKI AVL) based in Amsterdam, the Netherlands, is a leading European comprehensive cancer centre known for cutting-edge biology, genetics, immunotherapy, and personalized medicine, with a particular focus on the long-term effects of cancer treatments, including reproductive and cardiac health. Within NKI AVL, the research group on personalised oncology in adolescents and young adult patients contributes to realising the objectives of PredictAYA.