Dr Chrystelle Colas is a geneticist specialized in cancer predispositions. She is the co-head of the Clinical Unit of the Genetic Department of Institut Curie in Paris, France. Dr Colas has a PhD in cancer genetics, her main research interest fields are digestive cancer predispositions, mismatch repair instability and Constitutional Mismatch Repair Deficiency. She is one of the founder members of the European Consortium “Care for CMMRD” and is in charge of the European Database about this disease. This webinar will focus on clinical and molecular diagnosis of CMMRD as well as care and surveillance.