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 familial nephrotic syndrome characterized by onset of rapidly, progressive kidney dysfunction in the first year of life, proteinuria, and diffuse mesangial sclerosis that has_material_basis_in homozygous or compound heterozygous mutation in the AVIL gene on chromosome 12q14.1. (DO)