GRID2 and Neurodevelopmental delay: For example, a mutation associated with NDD affecting the eighth residue in GluA1 (p.A636T; SYTANLAAF) results in leaky channels9, and the equivalent mutation (p.A654T) in the GRID2 gene (encoding the GluD2 receptor) was associated with human movement disorder37 as well as the Lurcher mouse ataxic phenotype38.