IMMP2L and attention deficit-hyperactivity disorder: A number of smaller studies had suggested that IMMP2L may be deleted at higher frequencies in ASD [13,37,38,39,40,41,42,43,44,45,46] (Table 2), Gillies de la Tourette syndrome (GTS) [40,47,48,49,50], attention deficit hyperactivity disorder, (ADHD) [44] and intellectual disability (ID) [45] populations (Table 3).