On July 17, 2024 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, reported that the U.S. Food and Drug Administration (FDA) has accepted the filing of its Biologics License Application (BLA) for tabelecleucel (tab-cel) indicated as monotherapy for treatment of adult and pediatric patients two years of age and older with Epstein-Barr virus positive post-transplant lymphoproliferative disease (EBV+ PTLD) who have received at least one prior therapy (Press release, Atara Biotherapeutics, JUL 17, 2024, View Source [SID1234644921]). For solid organ transplant patients, prior therapy includes chemotherapy unless chemotherapy is inappropriate. There are no FDA approved therapies in this treatment setting.

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The BLA has been granted Priority Review with a Prescription Drug User Fee Act (PDUFA) target action date of January 15, 2025.

"The acceptance of the tab-cel BLA is a significant milestone towards making this first-of-its-kind treatment available to patients in the U.S.," said Pascal Touchon, President and Chief Executive Officer of Atara. "The FDA’s granting of priority review highlights the high unmet need in EBV+ PTLD, which is a devastating disease with limited treatment options and a poor overall survival rate. We continue to work closely with the Pierre Fabre Laboratories team to help prepare for the potential launch in the U.S. in early 2025, along with the potential label expansion multicohort Phase 2 EBVision trial."

Tab-cel is an allogeneic, EBV-specific T-cell immunotherapy designed to target and eliminate EBV-infected cells. The BLA is supported by pivotal and supportive data covering more than 430 patients treated with tab-cel across multiple life-threatening diseases including the latest pivotal ALLELE study data that demonstrated a statistically significant 48.8% Objective Response Rate (ORR) (p<0.0001) and favorable safety profile consistent with previous analyses.

Tab-cel has been granted Breakthrough Therapy Designation for the treatment of rituximab-refractory EBV-associated lymphoproliferative disease by the U.S. FDA and has orphan drug designation.

In December 2023, Atara announced the closing of the expanded global partnership with Pierre Fabre Laboratories for the U.S. and remaining global commercial markets for tab-cel, building on an initial partnership covering Europe, Middle East, Africa, and other select emerging markets. With the acceptance of the tab-cel BLA, Atara will receive a $20 million milestone payment from Pierre Fabre, with the potential to receive a $60 million milestone payment from Pierre Fabre contingent upon FDA approval of the tab-cel BLA. In addition, Pierre Fabre is reimbursing Atara for expected tab-cel global development costs through the BLA transfer and purchasing tab-cel inventory through the manufacturing transfer date. Atara is also eligible to receive sales milestones and double-digit tiered royalties on net sales of tab-cel in the U.S. and remaining global commercial markets referenced above.

Tab-cel was granted marketing authorization under the brand name Ebvallo in December 2022 by the European Commission. Marketing authorization was also granted by the Medicines and Healthcare Products Regulatory Agency in the United Kingdom in May 2023 and by Swissmedic in Switzerland in May 2024. In all three territories, Ebvallo is indicated as monotherapy for the treatment of adult and pediatric patients two years of age and older with relapsed or refractory EBV+ PTLD who have received at least one prior therapy. For solid organ transplant patients, prior therapy includes chemotherapy unless chemotherapy is inappropriate. Ebvallo was awarded the 2024 Prix Galien International Award for "Best Product for Orphan/Rare Diseases."