BioMarin Pharmaceutical Inc. insists that it did not know that the US Food and Drug Administration wanted to see longer-term data on its gene therapy Roctavian (valoctocogene roxaparvovec) for severe hemophilia A until it received a complete response letter from the agency.
The CRL, announced 19 August and received a day earlier, was a complete surprise. BioMarin had been very confident, and...








