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 primary bacterial infectious disease that results in infection located in mucosa of mouth, located in skin or located in bone, has_material_basis_in Treponema pallidum subsp endemicum, which is transmitted by contact or transmitted by sharing of domestic utensils. The infection has symptom moist patches in the mouth, has symptom lumps in long bones, tissues around the mouth, nose, and roof of the mouth. These lumps destroy tissue, causing bones to be deformed and disfiguring the face. (DO)