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Huntington's Disease-like 2 (HDL2) in North America and Japan.
USA.
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2004 (English)In: Annals of Neurology, ISSN 0364-5134, E-ISSN 1531-8249, Vol. 56, no 5, p. 670-4Article in journal (Refereed) Published
Abstract [en]

Huntington's Disease-like 2 (HDL2) is a progressive, autosomal dominant, neurodegenerative disorder with marked clinical and pathological similarities to Huntington's disease (HD). The causal mutation is a CTG/CAG expansion mutation on chromosome 16q24.3, in a variably spliced exon of junctophilin-3. The frequency of HDL2 was determined in nine independent series of patients referred for HD testing or selected for the presence of an HD-like phenotype in North America or Japan. The repeat length, ancestry, and age of onset of all North American HDL2 cases were determined. The results show that HDL2 is very rare, with a frequency of 0 to 15% among patients in the nine case series with an HD-like presentation who do not have the HD mutation. HDL2 is predominantly, and perhaps exclusively, found in individuals of African ancestry. Repeat expansions ranged from 44 to 57 triplets, with length instability in maternal transmission detected in a repeat of r2=0.29, p=0.0098). The results further support the evidence that the repeat expansion at the chromosome 16q24.3 locus is the direct cause of HDL2 and provide preliminary guidelines for the genetic testing of patients with an HD-like phenotype.

Place, publisher, year, edition, pages
2004. Vol. 56, no 5, p. 670-4
National Category
Nursing
Identifiers
URN: urn:nbn:se:esh:diva-7504DOI: 10.1002/ana.20248PubMedID: 15468075OAI: oai:DiVA.org:esh-7504DiVA, id: diva2:1317255
Note

Erratum in:

Ann Neurol. 2004 Dec;56(6):911.

Available from: 2019-05-22 Created: 2019-05-22 Last updated: 2019-05-22Bibliographically approved

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