FDA assigns PDUFA target action date of November 9, 2025 RGX-121 on track to be the first gene therapy and one-time treatment for MPS II Partner Nippon Shinyaku to lead commercialization upon potential approval REGENXBIO to lead commercial manufacturing and supply chainROCKVILLE, Md., May 13, 2025 /PRNewswire/ -- REGENXBIO Inc. (Nasdaq: RGNX) today announced the U.S. Food and Drug Administration (FDA) has accepted for review the Biologics License Application (BLA) seeking accelerated approval for clemids ...