Several genes identified in DGE and pathway analysis are implicated in human ADHD and ND (ANK3, CALD1, CHRNA4, CHRNA7, CMTM8, DLG4, DUSP6, GNG3, GNG11, GRIK5, GRINA2, GRM5, ICAM2, KCNJ6, MAPK1, PRKAB1, PRKAG2, SNAP25, SYNPO, SYT1, VAMP2). This evidence concerns the gene VAMP2 and attention deficit-hyperactivity disorder.