Atara, Pierre Fabre resubmit twice-rebuffed cell therapy after FDA flips again
Atara Biotherapeutics and Pierre Fabre Pharmaceuticals have resubmitted the BLA for Ebvallo (tabelecleucel) to treat EBV-positive posttransplant lymphoproliferative disease in patients 2 years and older, after two complete response letters, the second in January. The FDA reversed course in May, agreeing a single-arm study with an appropriate historical control could support approval. The resubmission adds patients and longer follow-up from the Phase 3 ALLELE trial plus expanded access, separate study and European commercial data; a Class 2 resubmission could carry a March 29, 2027 action date, and Atara is eligible for a $31 million milestone on approval.