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 intrauterine growth retardation, microcephaly, failure to thrive, developmental delay, intellectual disability, hypotonia, seizures, optic nerve atrophy and respiratory difficulties and has_material_basis_in homozygous mutation in the STT3B gene on chromosome 3p23. (DO)
Synonyms:
exact_synonym:
CDG Ix; CDG1X; CDGIx; congenital disorder of glycosylation 1x; congenital disorder of glycosylation type 1X; congenital disorder of glycosylation, type Ix