PTC Therapeutics Inc.’s accelerated go-ahead from the U.S. FDA for Kebilidi (eladocagene exuparvovec-tneq), a recombinant adeno-associated virus serotype 2-based gene therapy to treat aromatic L-amino acid decarboxylase (AADC) deficiency, came with a priority review voucher (PRV) that the company intends to monetize.