Atara Biotherapeutics to Present Recent Progress and Key Upcoming Milestones at the 42nd Annual J.P. Morgan Healthcare Conference

Atara Biotherapeutics, Inc. (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced Pascal Touchon, President and Chief Executive Officer of Atara, will present the Company’s 2023 accomplishments across strategic priorities and key upcoming milestones at the 42^nd Annual J.P. Morgan Healthcare Conference on Thursday, January 11 at 9:45 a.m. PST / 12:45 p.m. EST.

“Our off-the-shelf, allogeneic CAR EBV T cell pipeline now spans both oncology and autoimmune indications and is designed to overcome current limitations of autologous CAR T and other allogeneic cell therapy approaches. With preliminary clinical data expected later this year for ATA3219 in lymphoma and a planned IND in Lupus Nephritis in Q1, we enter 2024 with multiple opportunities for a potential best-in-class allogeneic product,” said Pascal Touchon, President and Chief Executive Officer of Atara. “Meanwhile, we are encouraged by our latest pivotal study data for tab-cel supporting our plan to file a BLA in Q2 2024, while our global commercial partner Pierre Fabre is starting to prepare the U.S. launch.”

Tabelecleucel (tab-cel or EBVALLO^TM) for Post-Transplant Lymphoproliferative Disease (PTLD)

• Atara is advancing toward filing a Biologics License Application (BLA) in Q2 2024, which will include the latest pivotal ALLELE study data-cut that demonstrated a statistically significant 49% Objective Response Rate (ORR) (p<0.0001) and favorable safety profile consistent with previous analyses
• This new data set augments the extensive database of pivotal and supportive data as part of the upcoming BLA filing package, collectively consisting of approximately 450 patients treated with tab-cel across multiple life-threatening diseases
• The expanded global partnership with Pierre Fabre Laboratories for the U.S. and remaining global commercial markets for tab-cel closed on December 20, 2023
• Under the agreement, Atara received approximately USD 27 million in cash upfront at the closing of the deal, with the potential to receive up to a total of USD 640 million in milestone payments, development funding, and significant double-digit tiered royalties on net sales

Tab-cel for Potential Indication Expansion