CANVAS RFC1

Disease ID
CANVAS
Gene ID
RFC1
Updated
Jun 4, 2025
v2.4.3

Disease

Name
Cerebellar ataxia, neuropathy, and vestibular areflexia syndrome
Inheritance
Autosomal recessive
Description
Sensory disturbances, imbalance, oscillopsia, chronic dry cough, dysarthria and dysphagia1 ; Late-onset ataxia, sensory neuropathy, vestibular areflexia syndrome2 .
Prevalence
Age of Onset(Typical)Years19  7636  52
Age of Onset Details
Typical: 36-52; Range: 19-763 .

Locus

Details
Mechanism
LoF
LoF; exact mechanism unknown11 .
Year
201912
Location in Gene
Intron 2
Gene Strand

Alleles

Ref. Motif
AAAAG
Benign (ref.)
AAAAG, AAAGG, AAGAG, AAAGGG
Benign (gene)
CTTTT, CCTTT, CTCTT, CCCTTT
Pathogenic (ref.)
AAGGG, ACAGG, AGGGC, AAGGC, AGAGG
Pathogenic (gene)
CCCTT, CCTGT, CCCTG, CCTTG, CCTCT
Unknown (ref.)
AAAAA, AAAAC, AACGG, AAGAC, AAGGT, AGAAC, AGGGG, GAAAC, GGGAC, GTGAG, AAAAGA, AAAGGA, GGAAAG
Unknown (gene)
TTTTT, GTTTT, CCGTT, CTTGT, ACCTT, CTGTT, CCCCT, CGTTT, CCCGT, ACCTC, CTTTTT, CCTTTT, CCCTTT
BenignIntermediatePathogenicUnits0  1111  200400  2,750

gnomAD

Pathogenic Genotype (%)Admixed AmericanAfrican/African AmericanAmishAshkenazi JewishEuropean (non Finnish)FinnishMiddle EasternSouth AsianEast AsianOthers01234567RFC1

Pathogenic Genotype (%): % of individuals predicted to be affected based on their genotype

References

Direct supporting references for info on this page.

1
The Lancet. Neurology · 2024-07-01
pmid:38876750
2
Repeat expansion disorders.
Practical neurology · 2025-05-15
pmid:39349043
3
GeneReviews® · 1993-01-01
genereviews:NBK564656
4
Cerebellum (London, England) · 2024-09-04
pmid:39230846
5
Brain : a journal of neurology · 2020-09-01
pmid:32851396
6
RFC1: Motifs and phenotypes.
Revue neurologique · 2024-04-15
pmid:38627134
7
Brain : a journal of neurology · 2023-12-01
pmid:37450567
8
RFC1 CANVAS: genotype phenotype correlations · 2024-11-01
doi:10.1136/jnnp-2024-ABN.259
9
NPJ Parkinson's disease · 2025-01-20
pmid:39833204
10
Repeat expansions in
ERJ open research · 2025-01-13
pmid:39811557
11
Nature reviews. Genetics · 2024-03-11
pmid:38467784
12
American journal of human genetics · 2019-06-20
pmid:31230722

Additional Literature

Additional literature related to this locus.

Raw PubMed search results
(All PubMed results returned by searching for this gene, tandem repeats, and disease, in medline format)

Genetics in medicine : official journal of the American College of Medical Genetics · 2025-05-22
pmid:40417743
Heterozygous and Homozygous
medRxiv : the preprint server for health sciences · 2025-04-23
pmid:40313272
EBioMedicine · 2025-04-23
pmid:40273470
Neurologia i neurochirurgia polska · 2025-04-17
pmid:40241639
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2025-04-05
pmid:40221271
Journal of the peripheral nervous system : JPNS · 2025-06-01
pmid:40211677
Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2025-04-05
pmid:40204545
International journal of molecular sciences · 2025-03-18
pmid:40141365
Genome research · 2025-04-14
pmid:40113266