Apellis Pharmaceuticals is a clinical-stage biopharmaceutical company, focused on the development of a platform of novel therapeutic compounds for the treatment of a broad range of autoimmune diseases based upon complement immunotherapy. Uncontrolled complement activation can lead to a wide range of life-threatening or debilitating disorders. Apellis is the first company to advance chronic therapy with a C3 inhibitor into clinical trials. Apellis Pharmaceuticals was founded in 2009 and is headquartered in Waltham, Massachusetts.