Pharmaceutical The European Medicines Agency (EMA) has granted Priority Medicine (PRIME) designation to radiprodil, an investigational, potent negative allosteric modulator selectively targeting the N-methyl-D-aspartate receptor subtype 2B (NR2B or GluN2B), for the treatment of GRIN-related neurodevelopmental disorder (NDD), from neurodevelopmental disorders company GRIN Therapeutics. 2 April 2025