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.
An autosomal recessive neurologic disorder characterized by delayed motor development and onset of a hyperkinetic movement disorder in the first year of life. The disorder results in impaired walking and orofacial dyskinesia with difficulty talking. (OMIM)