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 syndrome that is characterized by ichthyosis, mental retardation, spastic paraparesis, macular dystrophy, and leukoencephalopathy, and has_material_basis_in autosomal recessive inheritance of homozygous or compound heterozygous mutation in the aldehyde dehydrogenase 3 family member A2 (ALDH3A2) gene, which encodes fatty aldehyde dehydrogenase, on chromosome 17p11. (DO)