Genetics of dementia.

Abstract excerpt

Dementia is a syndrome and not a single disease. Approximately 0.5% of those with Alzheimer's disease have an autosomal dominant inherited early onset Alzheimer's disease, caused by mutations in the APP, PSEN1 or PSEN2 gene. A large population-based twin study of late onset Alzheimer's disease supports complex inheritance. The APOE epsilon4 allele is a major risk factor for late onset Alzheimer's disease, whereas...

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