André Veillette is an internationally-recognized immunologist who, over the past 20 years, has made several seminal contributions regarding the molecular mechanisms controlling the immune response. These mechanisms are essential to protect humans against infections, cancer and auto-immune diseases. Dr. Veillette's highly original work is recognized worldwide. It is consistently published in high impact scientific journals and is broadly referenced in academic textbooks. It has helped our understanding of certain immunodeficiencies and auto-immune diseases in humans, and has led to the identification of new targets to treat these diseases. For his scientific contributions, Dr. Veillette has received numerous prizes and awards.