Journal
CELL
Volume 178, Issue 4, Pages 887-+Publisher
CELL PRESS
DOI: 10.1016/j.cell.2019.06.036
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Funding
- CHDI Foundation (U.S.)
- U.S. National Institutes of Health [NS082079, NS091161, NS016367, NS049206]
- Medical Research Council (UK) [MR/L010305/1, MR/P001629/1]
- Cardiff University School of Medicine studentship
- MRC [MR/P001629/1] Funding Source: UKRI
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Variable, glutamine-encoding, CAA interruptions indicate that a property of the uninterrupted HTT CAG repeat sequence, distinct from the length of huntingtin's polyglutamine segment, dictates the rate at which Huntington's disease (HD) develops. The timing of onset shows no significant association with HTT cis-eQTLs but is influenced, sometimes in a sex-specific manner, by polymorphic variation at multiple DNA maintenance genes, suggesting that the special onset-determining property of the uninterrupted CAG repeat is a propensity for length instability that leads to its somatic expansion. Additional naturally occurring genetic modifier loci, defined by GWAS, may influence HD pathogenesis through other mechanisms. These findings have profound implications for the pathogenesis of HD and other repeat diseases and question the fundamental premise that polyglutamine length determines the rate of pathogenesis in the polyglutamine disorders.''
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