FDA rejection signals potential new barriers to gene therapies


THis unexpected rejection by the Food and Drug Administration of a gene therapy for the hemophilia of the thriving disorder has resurfaced across the biotech industry, potentially complicating the path to the market for these one-time treatments.

In deciding not to approve Roctavian, a BioMarin Pharma Gene Therapy for Hemophilia A, the FDA required two additional years of data to reinforce the case that its benefits are sustainable. This is in contrast to the agency’s observed linearity in approving previous one-time therapies for rare diseases, and it may affect the plans of other gene therapy companies in the hopes of gaining FDA approval based on early signs. of promise.

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