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 congenital disorder of glycosylation I that is characterized by neurologic abnormalities (global developmental delay in language, social skills and fine and gross motor development, intellectual disability, hypotonia, microcephaly, seizures/epilepsy), facial dysmorphism (deep set eyes, large ears, hypoplastic vermillion of upper lip, large mouth with widely spaced teeth), feeding problems often due to chewing difficulties and aversion to food with certain textures, failure to thrive, gastrointestinal abnormalities (reflux or vomiting) and strabismus and has_material_basis_in hemizygous mutation in the SSR4 gene on chromosome Xq28. (DO)
Synonyms:
exact_synonym:
CDG IY; CDG1Y; CDGIy; SSR4-congenital disorder of glycosylation; congenital disorder of glycosylation 1y; congenital disorder of glycosylation type 1Y; congenital disorder of glycosylation, type Iy