3rd Party Inspection Findings Hits Regeneron BLA

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FDA has issued Regeneron Pharmaceuticals a complete response letter on its BLA for linvoseltamab in relapsed/refractory (R/R) multiple myeloma (MM) that has progressed after at least three prior therapies. “The sole approvability issue identified is related to findings from a pre-approval inspection at a third-party fill/finish manufacturer for another company’s product candidate,” Regeneron says. “The third-party fill/finish manufacturer has since informed Regeneron that it believes the findings have been resolved, their facility is awaiting reinspection by the FDA, and it is expected to take place in the coming months.”

The submission was accepted for review in February based on data from a Phase 1/2 pivotal trial (LINKER-MM1) investigating linvoseltamab in R/R MM, which were reported in 12/2023. Invoseltamab is described as an investigational bispecific antibody designed to bridge B-cell maturation antigen on multiple myeloma cells with CD3-expressing T cells to encourage T-cell activation and cancer-cell death. MM is the second most common blood cancer, with about 35,000 people diagnosed annually in the U.S.

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