Kezar Life Sciences, Inc. is a clinical-stage biopharmaceutical company which engages in the development of novel small molecule therapeutics to treat autoimmunity and cancer. Its product pipeline includes KZR-616, KZR-261, and KZR-TBD. The company was founded by John Fowler, Christopher J. Kirk, and Jack Taunton on February 19, 2015 and is headquartered in South San Francisco, CA.