TolerRx helps immune systems work on the virtue of tolerance. The company develops therapies to treat patients with autoimmune diseases, including Type I diabetes and rheumatoid arthritis. Organ transplant rejection is also a target. The company's treatments induce immunological tolerance, or teach a body's immune system to recognize its own tissues and prevent it from attacking the tissue and causing disease. TolerRx has five autoimmune and two cancer/chronic viral drugs in the pipeline. The immune drugs include treatments for Type I diabetes, psoriasis, rheumatoid arthritis, and lupus. TolerRx was founded in 2000 by Herman Waldmann and Douglas J. Ringler.