Prof. Thierry André is Professor of Medical Oncology at Sorbonne Université in Paris and Head of the Medical Oncology Department at Saint Antoine Hospital (AP-HP), a position he has held since 2011. He is Past President and current member of the Scientific Committee of the ARCAD Foundation (Aide et Recherche en Cancérologie Digestive), and Founder and Vice President of the GERCOR multidisciplinary oncology research group, where he chairs the scientific committee. A leading specialist in gastrointestinal malignancies — particularly MSI-H/dMMR colorectal cancer and immunotherapy — he has served as principal investigator of numerous Phase I, II, and III clinical trials including the CheckMate 8HW study. He has authored more than 570 peer-reviewed publications indexed on PubMed. He is a member of ESMO, ASCO, and the ACCENT group, and is affiliated with INSERM’s Microsatellite Instability and Cancer team at the Centre de Recherche Saint-Antoine, Paris.