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 ORCID: https://orcid.org/0000-0002-4069-0259 and Owen, Michael John ORCID: https://orcid.org/0000-0003-4798-0862 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:	31 Oct 2022 09:27
URI:	https://orca.cardiff.ac.uk/id/eprint/81114

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