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.
Term:
Cerebellar Ataxia, Neuropathy, and Vestibular Areflexia Syndrome
An adult-onset slowly progressive neurologic disorder characterized by imbalance due to cerebellar gait and limb ataxia, impaired vestibular function bilaterally, and non-length-dependent sensory neuropathy. CANVAS is caused by a homozygous repeat expansion (AAGGG(n)) in the RFC1 gene (102579) on chromosome 4p14. The reference allele is a simple tandem pentanucleotide AAAAG repeat of 11 (AAAAG(11)), whereas the expansion size ranges from about 400 to 2,000 repeats, with the majority of cases having about 1,000 repeats. (OMIM)
ClinVar Annotator: match by term: Cerebellar ataxia, neuropathy, and vestibular areflexia syndrome | ClinVar Annotator: match by term: RFC1-related condition DNA:repeats:intron:(AAGGG)n (human) DNA:repeat:intron: