Tolerx, Inc. was a biopharmaceutical company headquartered in Cambridge, Massachusetts. The company was focused on discovering and developing new therapies designed to treat patients by reprogramming the immune system, allowing for long-term remission of immune-related diseases after a short course of therapy. Targeted diseases include type 1 diabetes, rheumatoid arthritis, Inflammatory bowel disease (IBD), cancer, chronic and viral diseases. In 2008, Tolerx was named one of Fierce Biotech’s Fierce 15. In October 2011, Tolerx was shut down due to an unsuccessful Phase III trial in patients recently diagnosed with Type 1 diabetes.