The “remarkably appealing” route of administration and every-three-month dosing put Ferring Pharmaceuticals SA’s nadofaragene firadenovec (rAd-IFN/Syn3, also known as Instiladrin) in strong position for approval in high-grade Bacillus Calmette-Guérin (BCG) unresponsive non-muscle invasive bladder cancer (NMIBC).