학술논문

Exceptionally low likelihood of Alzheimer's dementia in APOE2 homozygotes from a 5,000-person neuropathological study.
Document Type
article
Source
Nature communications. 11(1)
Subject
Alzheimer’s Disease Genetics Consortium
Brain
Humans
Alzheimer Disease
Genetic Predisposition to Disease
Probability
Genotype
Homozygote
Alleles
Aged
Aged
80 and over
Middle Aged
Female
Male
Apolipoprotein E2
Apolipoprotein E3
Apolipoprotein E4
Genetic Association Studies
Neuropathology
Aging
Brain Disorders
Acquired Cognitive Impairment
Dementia
Neurodegenerative
Alzheimer's Disease including Alzheimer's Disease Related Dementias (AD/ADRD)
Genetics
Alzheimer's Disease
Prevention
Neurosciences
2.1 Biological and endogenous factors
Neurological
Language
Abstract
Each additional copy of the apolipoprotein E4 (APOE4) allele is associated with a higher risk of Alzheimer's dementia, while the APOE2 allele is associated with a lower risk of Alzheimer's dementia, it is not yet known whether APOE2 homozygotes have a particularly low risk. We generated Alzheimer's dementia odds ratios and other findings in more than 5,000 clinically characterized and neuropathologically characterized Alzheimer's dementia cases and controls. APOE2/2 was associated with a low Alzheimer's dementia odds ratios compared to APOE2/3 and 3/3, and an exceptionally low odds ratio compared to APOE4/4, and the impact of APOE2 and APOE4 gene dose was significantly greater in the neuropathologically confirmed group than in more than 24,000 neuropathologically unconfirmed cases and controls. Finding and targeting the factors by which APOE and its variants influence Alzheimer's disease could have a major impact on the understanding, treatment and prevention of the disease.