RGD uses the Human Disease Ontology (DO, https://disease-ontology.org/) for disease curation across species. RGD automatically downloads each new release of the ontology on a monthly basis. Some additional terms which are required for RGD's curation purposes but are not currently covered in the official version of DO have been added. As corresponding terms are added to DO, these custom terms are retired and the DO terms substituted in existing annotations and subsequently used for curation.
A lipid metabolism disorder characterized by increased methylsterol levels in cells and cerebrospinal fluid, mild to severe cognitive impairment, seizures, microcephaly, cerebral cortical malformations, dysmorphic facial features, and thin body habitus that has_material_basis_in hemizygous mutation in NSDHL on chromosome Xq28. (DO)
Synonyms:
exact_synonym:
X-linked intellectual disability-microcephaly-cortical malformation-thin habitus syndrome; X-linked mental retardation with thin body habitus and cortical malformation