Dr. André Veillette is Full Research Professor at the IRCM and Université de Montréal. Throughout his career, he has worked in the field of immunology where he helped found the field of immune cell activation 30 years ago. Since then, he has made important discoveries regarding CD4 and CD8 T cell co-receptors and surface antigens, the protein tyrosine kinases Csk and Lck, the role of the adaptor molecule SAP in immune regulation and the role of innate immune cells in immuno-oncology. These and other discoveries have provided fundamental insights into the immunological mechanisms of health and disease, including cancer.