Dentatorubral and pallidoluysian atrophy expansion of an unstable CAG trinucleotide on chromosome 12p.
Nat Genet
; 6(1): 14-8, 1994 Jan.
Article
em En
| MEDLINE
| ID: mdl-8136826
ABSTRACT
Dentatorubral and pallidoluysian atrophy (DRPLA) is an autosomal dominant neurodegenerative disorder characterized by combined systemic degeneration of the dentatofugal and pallidofugal pathways. We investigated a candidate gene and found that DRPLA patients had an expanded CAG trinucleotide repeat in a gene on the short arm of chromosome 12. The repeat size varied from 7-23 in normal individuals. In patients one allele was expanded to between 49-75 repeats or occasionally even more. Expansion was usually associated with paternal transmission and only occasionally with maternal transmission. Repeat size showed a close correlation with age of onset of symptoms and disease severity. We conclude that DRPLA is the seventh genetic disorder known to be associated with expansion of an unstable trinucleotide repeat.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cromossomos Humanos Par 12
/
Sequências Repetitivas de Ácido Nucleico
/
Doenças do Sistema Nervoso
Limite:
Female
/
Humans
/
Male
Idioma:
En
Revista:
Nat Genet
Assunto da revista:
GENETICA MEDICA
Ano de publicação:
1994
Tipo de documento:
Article
País de afiliação:
Japão