Atara Biotherapeutics, Inc. operates as a clinical stage company which focuses on developing novel therapeutics for serious unmet medical needs, with an initial focus on muscle wasting conditions and oncology. Its product candidates are biologics targeting myostatin and activin, members of the transforming growth factor-beta, protein superfamily, which play roles in the growth and maintenance of muscle and many other body tissues. Read More The company was founded by Isaac E. Ciechanover on August 22, 2012 and is headquartered in South San Francisco, CA.