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Updated: Dec 9, 2025

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Influence of APOE Genotype on Mortality and Cognitive Impairment

Andrew C Robinson1, Yvonne S Davidson1, Federico Roncaroli1,2

  • 1Division of Neuroscience & Experimental Psychology, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Salford Royal Hospital, Salford, UK.

Journal of Alzheimer'S Disease Reports
|September 9, 2020
PubMed

Insights

The apolipoprotein E (APOE) genotype influences how long individuals live and remain cognitively healthy. APOE ε4 allele carriers have a reduced chance of reaching 80+ years, while APOE ε2 carriers tend to live longer.

Area of Science:

  • Neuroscience
  • Genetics
  • Gerontology

Background:

  • Conflicting findings exist regarding the association between apolipoprotein E (APOE) genotype and mortality.
  • The impact of APOE genotype on human longevity and cognitive health remains unclear.

Purpose of the Study:

  • To investigate the relationship between APOE genotype and age at death.
  • To examine the influence of APOE genotype on cognitive health in aging individuals.

Main Methods:

  • Analysis of APOE genotype in individuals from the Manchester arm of the Brains for Dementia Research programme.
  • Inclusion of participants from the University of Manchester Longitudinal Study of Cognition in Normal Healthy Old Age.
  • Assessment of age at death and cognitive status in relation to APOE genotype.

Main Results:

  • Carrying the APOE ε4 allele was associated with a decreased likelihood of reaching 80+ years and maintaining cognitive health.
  • Individuals with the APOE ε2 allele showed a tendency towards longer lifespans and preserved cognitive function.
  • The APOE ε4 allele showed a more pronounced negative impact on longevity and cognitive health in cognitively impaired individuals.

Conclusions:

  • APOE genotype significantly influences longevity and cognitive aging.
  • The APOE ε2 allele may confer a protective effect on lifespan and cognitive health.
  • The APOE ε4 allele represents a risk factor for reduced longevity and cognitive decline, particularly in vulnerable populations.

Keywords:
APOEAlzheimer’s diseasecognitionlongevitymortality

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