Intellectual Disability-Hypotonic Facies Syndrome, X-Linked, 1, also known as holmes-gang syndrome, is related to intellectual developmental disorder, x-linked, syndromic, turner type and johnson neuroectodermal syndrome, and has symptoms including constipation and vomiting. An important gene associated with Intellectual Disability-Hypotonic Facies Syndrome, X-Linked, 1 is ATRX (ATRX Chromatin Remodeler). Affiliated tissues include tongue and bone, and related phenotypes are obesity and seizure