Denali Therapeutics Inc. (Nasdaq: DNLI) today announced it has entered into a definitive agreement to sell its Rare Pediatric Disease Priority Review Voucher (PRV) for gross proceeds of $195 million. The U.S. Food and Drug Administration (FDA) awarded the PRV to Denali following accelerated approval of the enzyme replacement therapy AVLAYAH™ (tividenofusp alfa-eknm) for the treatment of Hunter syndrome (mucopolysaccharidosis type II; MPS II) in March 2026. AVLAYAH is the first FDA-approved medicine in an emerging class of biotherapeutics designed to cross the blood-brain barrier via transferrin receptor (TfR)-mediated transport.