Alzheimer's disease genetic risk variants beyond APOE ε4 predict mortality

Jesse Mez, Jessica R. Marden, Shubhabrata Mukherjee, Stefan Walter, Laura E. Gibbons, Alden L. Gross, Laura B. Zahodne, Paola Gilsanz, Paul Brewster, Kwangsik Nho, Paul K. Crane, Eric B. Larson, M. Maria Glymour

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Introduction We hypothesized that, like apolipoprotein E (APOE), other late-onset Alzheimer's disease (LOAD) genetic susceptibility loci predict mortality. Methods We used a weighted genetic risk score (GRS) from 21 non-APOE LOAD risk variants to predict survival in the Adult Changes in Thought and the Health and Retirement Studies. We meta-analyzed hazard ratios and examined models adjusted for cognitive performance or limited to participants with dementia. For replication, we assessed the GRS-longevity association in the Cohorts for Heart and Aging Research in Genomic Epidemiology, comparing cases surviving to age ≥90 years with controls who died between ages 55 and 80 years. Results Higher GRS predicted mortality (hazard ratio = 1.05; 95% confidence interval: 1.00–1.10, P =.04). After adjusting for cognitive performance or restricting to participants with dementia, the relationship was attenuated and no longer significant. In case-control analysis, the GRS was associated with reduced longevity (odds ratio = 0.64; 95% confidence interval: 0.41–1.00, P =.05). Discussion Non-APOE LOAD susceptibility loci confer risk for mortality, likely through effects on dementia incidence.

Original languageEnglish (US)
Pages (from-to)188-195
Number of pages8
JournalAlzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring
Volume8
DOIs
StatePublished - Jan 1 2017

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Keywords

  • APOE
  • Adult Changes in Thought (ACT)
  • Alzheimer's disease
  • Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE)
  • Collider stratification bias
  • Genetic risk score
  • Genome-wide association study (GWAS)
  • Health and Retirement Study (HRS)
  • Longevity
  • Mortality
  • Selection bias
  • Survival analysis
  • Survivor bias

ASJC Scopus subject areas

  • Clinical Neurology
  • Psychiatry and Mental health

Cite this

Mez, J., Marden, J. R., Mukherjee, S., Walter, S., Gibbons, L. E., Gross, A. L., Zahodne, L. B., Gilsanz, P., Brewster, P., Nho, K., Crane, P. K., Larson, E. B., & Glymour, M. M. (2017). Alzheimer's disease genetic risk variants beyond APOE ε4 predict mortality. Alzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring, 8, 188-195. https://doi.org/10.1016/j.dadm.2017.07.002