FDA ‘Complete Response’ on Atara’s Ebvallo

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FDA has issued Atara Biotherapeutics a complete response letter on its BLA for Ebvallo (tabelecleucel), a monotherapy treatment for adult and pediatric patients two years of age and older with Epstein-Barr virus-positive post-transplant lymphoproliferative disease, who have received at least one prior therapy including an anti-CD20 containing regimen. The company says the application’s rejection was due solely to documented observations during a pre-license inspection of a third-party manufacturing facility, adding that it did not identify any deficiencies related to the manufacturing process, or clinical safety or efficacy.

“We are working closely with our partner Pierre Fabre Laboratories, the FDA, and the third-party manufacturer to address the feedback to support marketing approval for Ebvallo,” a company statement says. “Once the third-party manufacturer GMP compliance issues have been adequately addressed, we will file for a resubmission, which we would expect to be potentially approved within six months of resubmission.” The BLA is based on results from the pivotal ALLELE study demonstrating a statistically significant 50% “objective response rate and a favorable safety profile,” Atara says.

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