Gand Syndrome, also known as severe intellectual disability-poor language-strabismus-grimacing face-long fingers syndrome, is related to severe intellectual disability-poor language-strabismus-grimacing face-long fing and hypotonia. An important gene associated with Gand Syndrome is GATAD2B (GATA Zinc Finger Domain Containing 2B). Affiliated tissues include brain and eye, and related phenotypes are global developmental delay and intellectual disability, severe