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 inherited metabolic disorder characterized by decreased beta-hydroxylation of dopamine in nerves resulting in impaired autonomic noradrenergic neurotransmission and clinical features including severely decreased norepinephrine levels, orthostatic hypotension, ptosis, nasal stuffiness, and delayed eye opening that has_material_basis_in autosomal recessive inheritance of homozygous or compound heterozygous mutation in the dopamine beta-hydroxylase gene (DBH) on chromosome 9q34. (DO)