AKIRIN2 and neurodevelopmental disorder: EPHA7 (ephrin receptor A7, MIM*602190) is known to be expressed in the brain [25], but there is no firm evidence that it is related to a neurodevelopmental disorder and we do not see a more severe developmental phenotype in individuals who lack SYNCRIP, AKIRIN2 and EPHA7 (subgroups D and R) compared to those who only lack SYNCRIP and AKIRIN2 (subgroup C).