Agenus is an immuno-oncology company that focuses on the discovery and development of treatments that engage the body's immune system for patients suffering with cancer. The company offers Retrocyte Display, an antibody discovery platform that screens and generates therapeutic antibody drug candidates. It is also developing Prophage, a heat shock protein-based autologous vaccine. Agenus Inc. was founded in 1994 and is headquartered in Lexington, Massachusetts.