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APOE epsilon 4 influences the manifestation of Alzheimer's disease in adults with Down's syndrome

Deb, S., Braganza, J., Norton, N., Williams, H., Kehoe, P. G., Williams, Julie and Owen, Michael John 2000. APOE epsilon 4 influences the manifestation of Alzheimer's disease in adults with Down's syndrome. British Journal of Psychiatry 176 , pp. 468-472. 10.1192/bjp.176.5.468

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Abstract

BACKGROUND: Recent studies of the relationship between the apolipoprotein E (APOE) gene and Alzheimer's disease in adults with Down's syndrome have revealed inconsistent results. AIMS: To assess the role of the APOE gene in the manifestation of Alzheimer's disease in adults with Down's syndrome. METHOD: We studied the APOE genotypes of 24 adults with dementia and 33 non-demented adults with Down's syndrome over 35 years of age, and an additional group of 164 non-learning disabled adults. We also carried out a meta-analysis of all previously published studies of association between APOE and Down's syndrome, incorporating the current data. RESULTS: We observed a non-significant excess of APOE epsilon 4 and a reduction of epsilon 2 in adults with dementia compared with non-demented adults with Down's syndrome in our sample. However, meta-analysis showed a significantly higher frequency of epsilon 4 in adults with dementia compared with non-demented adults with Down's syndrome (odds ratio = 2.02, 95% CI 1.33-3.07, P = 0.001), but no significant reduction in the frequency of epsilon 2. CONCLUSIONS: The APOE epsilon 4 allele acts as a risk factor for the age-specific manifestation of Alzheimer's disease in people with Down's syndrome.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
MRC Centre for Neuropsychiatric Genetics and Genomics (CNGG)
Neuroscience and Mental Health Research Institute (NMHRI)
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Publisher: Royal College of Psychiatrists
ISSN: 0007-1250
Last Modified: 04 Jun 2017 08:36
URI: http://orca.cf.ac.uk/id/eprint/81114

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