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 dominant nonsyndromic deafness that is characterized by postlingual onset in the fourth decade of life with high frequency progressive hearing loss and has_material_basis_in a 269-kb duplication of chromosome 9q21.11 involving the TJP2 and FAM189A2 genes. (DO)