Kezar Life Sciences, Inc., a clinical-stage biotechnology company, engages in the discovery and development of small molecule therapeutics to treat unmet needs in autoimmunity and cancer in the United States. Its lead product candidate, KZR-616, a selective immunoproteasome inhibitor that is in Phase 1b/2 clinical trials in lupus and lupus nephritis. The company was founded in 2015 and is headquartered in South San Francisco, California.