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 combined T cell and B cell immunodeficiency characterized by decreased CD4+ T cells, decreased CD19+ B cells, recurrent bacterial infections, and severe cutaneous warts on the hands, feet, and face that has_material_basis_in heterozygous mutation in the IVNS1ABP gene on chromosome 1q25.3. (DO)