severe X-linked intellectual disability, Gustavson type https://github.com/monarch-initiative/mondo/issues/5588 https://www.malacards.org/card/intellectual_developmental_disorder_x_linked_syndromic_gustavson_type https://www.malacards.org/card/severe_x_linked_intellectual_disability_gustavson_type https://www.malacards.org/card/x_linked_mental_retardation_gustavson_type MONDO:0010661 mental retardation X-linked severe Gustavson type intellectual disability X-linked severe Gustavson type Orphanet:3078 X-linked intellectual disability Gustavson type Severe X-linked intellectual disability, Gustavson type is characterized by X-linked intellectual disability, microcephaly, optical atrophy with impaired vision or blindness, a severe hearing defect, facial dysmorphology, spasticity, epileptic seizures and restricted joint movement. It has been described in seven children from two generations of a Swedish family. All patients died in during early childhood. mental retardation with optic atrophy, deafness, and seizures SCTID:722213009 X-linked mental retardation Gustavson type GARD:0005611 MEDGEN:167088 DOID:0081123 gust UMLS:C0795965 MESH:C536759 OMIM:309555 X-linked syndromic intellectual disability