Intellectual Disability, Birk-Barel Type, also known as intellectual disability-hypotonia-facial dysmorphism syndrome, is related to kcnk9 imprinting syndrome. An important gene associated with Intellectual Disability, Birk-Barel Type is KCNK9 (Potassium Two Pore Domain Channel Subfamily K Member 9). Affiliated tissues include tongue, and related phenotypes are dysphonia and dysphagia