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 nonphotosensitive trichothiodystrophy characterized by sparse and brittle hair, facial dysmorphism, global developmental delays, growth deficiency, hypogonadism, and structural brain abnormalities that has_material_basis_in hemizygous mutation in the RNF113A gene on chromosome Xq24. (DO)