Atara Biotherapeutics said its partner Pierre Fabre Pharmaceuticals has submitted a request to the U.S. FDA for a Type A meeting regarding tabelecleucel (tab-cel). The companies submitted a briefing book addressing items raised in the FDA’s Complete Response Letter dated Jan. 9, 2026, and provided additional context and clarification that the ALLELE study was “adequate, well-controlled, and sufficient” to support the tab-cel Biologics License Application. The briefing book also includes updated longer-term efficacy data from ALLELE, additional supportive data from the tab-cel development program, and post-marketing data in Europe intended for inclusion in a potential resubmission.
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