Atara Refiles BLA for Gene Therapy

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Atara Biotherapeutics has resubmitted its BLA for Ebvallo (tabelecleucel or tab-cel), seeking approval for its use as monotherapy for treating adult and pediatric patients two years of age and older with Epstein-Barr virus (EBV)-positive post-transplant lymphoproliferative disease who have received at least one prior therapy. “The BLA resubmission for tab-cel represents the collaborative efforts with our partner, Pierre Fabre Laboratories, to address the third-party manufacturing facility observations outlined in the January 2025 complete response letter,” a company release says.

Atara describes tab-cel as an allogeneic, EBV-specific T-cell immunotherapy designed to target and eliminate EBV-infected cells. The BLA is supported by data from 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 and favorable safety profile consistent with previous analyses, it says.

Previously, tab-cel was granted a breakthrough therapy designation for treating rituximab-refractory EBV-associated lymphoproliferative disease by the U.S. FDA and it has an orphan drug designation for treating Epstein-Barr virus-positive post-transplant lymphoproliferative disorders.

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