CAG repeat expansion in Huntington disease determines age at onset in a fully dominant fashion

J-M Lee, E M Ramos, J-H Lee, T Gillis, J S Mysore, M R Hayden, S C Warby, P Morrison, M Nance, C A Ross, R L Margolis, F Squitieri, S Orobello, S Di Donato, E Gomez-Tortosa, C Ayuso, O Suchowersky, R J A Trent, E McCusker, A NovellettoM Frontali, R I Jones, T Ashizawa, S Frank, M H Saint-Hilaire, S M Hersch, H D Rosas, D Lucente, M Harrison, A Zanko, R K Abramson, K Marder, J Sequeiros, J S Paulsen, G B Landwehrmeyer, R H Myers, M E MacDonald, J F Gusella, PREDICT-HD study of the Huntington Study Group (HSG), Lena Elisabeth Hjermind, Jørgen Erik Nielsen

233 Citations (Scopus)

Abstract

Age at onset of diagnostic motor manifestations in Huntington disease (HD) is strongly correlated with an expanded CAG trinucleotide repeat. The length of the normal CAG repeat allele has been reported also to influence age at onset, in interaction with the expanded allele. Due to profound implications for disease mechanism and modification, we tested whether the normal allele, interaction between the expanded and normal alleles, or presence of a second expanded allele affects age at onset of HD motor signs.
Original languageEnglish
JournalNeurology
Volume78
Issue number10
Pages (from-to)690-5
Number of pages6
ISSN0028-3878
DOIs
Publication statusPublished - 2012

Keywords

  • Adult
  • Age of Onset
  • Alleles
  • Female
  • Genotype
  • Humans
  • Huntington Disease
  • Male
  • Trinucleotide Repeat Expansion

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