Atara Biotherapeutics, Inc. engages in the development of transformative therapies for patients with cancer and autoimmune disease in the United States and the United Kingdom. Its lead product includes Tab-cel (tabelecleucel), a T-cell immunotherapy program that is in Phase 3 clinical trials for the treatment of epstein-barr virus (EBV) with post-transplant lymphoproliferative disease, as well as other EBV-driven diseases. The company has research collaboration agreements with Memorial Sloan Kettering Cancer Center, and Council of the Queensland Institute of Medical Research.