Atara Biotherapeutics Expands T-Cell Immunotherapy Collaboration to Advance Next-Generation CAR T Technologies in Oncology, Autoimmune and Other Diseases

Entry into genetically engineered T-cells marks next step in Atara’s strategy to advance leadership position in off-the-shelf, allogeneic T-cell immunotherapy

SOUTH SAN FRANCISCO, CA, USA I May 08, 2018 I Atara Biotherapeutics, Inc. (Nasdaq:ATRA), a leading off-the-shelf, allogeneic T-cell immunotherapy company developing novel treatments for patients with cancer, autoimmune and viral diseases, today announced the Company has expanded its collaboration with Memorial Sloan Kettering Cancer Center (MSK) to develop the next generation of genetically engineered chimeric antigen receptor T-cell (CAR T) immunotherapies. This agreement is the next step in Atara’s strategy to leverage the potential of the Company’s technology platform to develop genetically modified off-the-shelf, allogeneic T-cell immunotherapies to transform the lives of patients with serious medical conditions.

Under the agreement, Atara will gain access to several of MSK’s innovative enabling technologies, including a novel CAR T construct that Atara believes has physiologic T-cell activation properties, as well as methods for designing CAR T immunotherapies. Atara is also entering into an exclusive research collaboration for multiple targets with Michel Sadelain, M.D., Ph.D., Director, Center for Cell Engineering at MSK, to employ next-generation technologies in developing novel CAR T immunotherapies with applications in oncology, autoimmune and infectious diseases.

Dr. Sadelain stated, “We are eager to work with Atara to continue advancing promising allogeneic T-cell immunotherapy technologies that originated at MSK. The new CAR T technologies seek to overcome persistent therapeutic challenges, such as safety and tolerability, durability of treatment response, and activity in areas of significant unmet medical need that are underserved by the current generation of CAR T immunotherapies.”

“Our earlier MSK collaboration has been highly productive, highlighted by tab-cel™, Atara’s off-the-shelf, allogeneic T-cell immunotherapy currently in Phase 3 development,” said Isaac Ciechanover, M.D., Chief Executive Officer and President of Atara Biotherapeutics. “The deepening of our collaboration with MSK allows us to rapidly advance novel gene-edited CAR T development programs leveraging our existing off-the-shelf T-cell immunotherapy technology platform, manufacturing expertise and research and development capabilities. Going forward, we plan to continue to assemble complementary genetic engineering technologies to grow our pipeline and realize the full potential of our platform.”

About Atara Biotherapeutics, Inc.
Atara Biotherapeutics, Inc. (@Atarabio) is a leading T-cell immunotherapy company developing novel treatments for patients with cancer, autoimmune and viral diseases. The Company's off-the-shelf, allogeneic T-cells are bioengineered from donors with healthy immune function and allow for rapid delivery from inventory to patients without a requirement for pretreatment. Atara's T-cell immunotherapies are designed to precisely recognize and eliminate cancerous or diseased cells without affecting normal, healthy cells. Atara's most advanced T-cell immunotherapy in development, tabelecleucel, or tab-cel™ (formerly known as ATA129), is being developed for the treatment of patients with Epstein-Barr virus (EBV) associated post-transplant lymphoproliferative disorder (EBV+ PTLD) who have failed rituximab, as well as other EBV associated hematologic and solid tumors, including nasopharyngeal carcinoma (NPC). Tab-cel™ is in Phase 3 clinical development for the treatment of EBV+ PTLD following an allogeneic hematopoietic cell transplant (MATCH study) or solid organ transplant (ALLELE study). Atara is also developing off-the-shelf, allogenic ATA188 and autologous ATA190 T-cell immunotherapies using a complementary targeted antigen recognition technology for specific EBV antigens believed to be important for the potential treatment of multiple sclerosis (MS). A Phase 1 clinical study of autologous ATA190 in patients with progressive MS is ongoing. Atara also initiated a multinational Phase 1 ATA188 clinical study in patients with progressive or relapsing-remitting MS in Australia in the fourth quarter of 2017 and in the U.S. in March 2018. Atara's clinical pipeline also includes ATA520 targeting Wilms Tumor 1 (WT1) and ATA230 directed against cytomegalovirus (CMV).

SOURCE: Atara Biotherapeutics

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