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A new model for prediction of the age of onset and penetrance for Huntington's disease based on CAG length

Langbehn, DR, Brinkman, RR, Falush, D, Paulsen, JS, Hayden, MR, on behalf of an International Huntington's Disease Collaborative Group·2004·Clinical Genetics

Abstract

Huntington's disease (HD) is a neurodegenerative disorder caused by an unstable CAG repeat. For patients at risk, participating in predictive testing and learning of having CAG expansion, a major unanswered question shifts from “Will I get HD?” to “When will it manifest?” Using the largest cohort of HD patients analyzed to date (2913 individuals from 40 centers worldwide), we developed a parametric survival model based on CAG repeat length to predict the probability of neurological disease onset (based on motor neurological symptoms rather than psychiatric onset) at different ages for individual patients. We provide estimated probabilities of onset associated with CAG repeats between 36 and 56 for individuals of any age with narrow confidence intervals. For example, our model predicts a 91% chance that a 40‐year‐old individual with 42 repeats will have onset by the age of 65, with a 95% confidence interval from 90 to 93%. This model also defines the variability in HD onset that is not attributable to CAG length and provides information concerning CAG‐related penetrance rates.

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Metadata

Authors
Langbehn, D., Brinkman, R., Falush, D., Paulsen, J., Hayden, M., & on behalf of an International Huntington's Disease Collaborative Group
Venue
Clinical Genetics
Publisher
Wiley
Published
2004-03-12
Volume
65
Issue
4
Pages
267-277
ISSN
  • 0009-9163 (ISSN-L)
  • 1399-0004
OpenAlex
W2163671213
Cited by
817
References
2
FWCI
6.78
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A new model for prediction of the age of onset and penetrance for Huntington's disease based on CAG length. https://app.cochat.ai/papers/10.1111/j.1399-0004.2004.00241.x
The paper
Langbehn, D., Brinkman, R., Falush, D., Paulsen, J., Hayden, M., & on behalf of an International Huntington's Disease Collaborative Group. (2004). A new model for prediction of the age of onset and penetrance for Huntington's disease based on CAG length. Clinical Genetics. https://doi.org/10.1111/j.1399-0004.2004.00241.x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.