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 spastic ataxia that is characterized by cerebellar ataxia, spasticity, dysarthria and optic atrophy, has_material_basis_in homozygous mutation in the MTPAP gene on chromosome 10p11. (DO)
ClinVar Annotator: match by term: Spastic ataxia 4 ClinVar Annotator: match by term: MTPAP-related condition | ClinVar Annotator: match by term: Spastic ataxia 4 CTD Direct Evidence: marker/mechanism