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 cerebral amyloid angiopathy characterized by onset in the 4th to 6th decade of life, progressive mental deterioration, spasticity, muscular rigidity but no tremors, spontaneous movements or sensory changes that has_material_basis_in an autosomal dominant mutation of the ITM2B gene on chromosome 13q14.2. (DO)
Synonyms:
exact_synonym:
FBD; cerebral amyloid angiopathy, British type; familial British dementia; presenile dementia with spastic ataxia