Apolipoprotein E and affective symptoms in mild cognitive impairment and Alzheimer's disease dementia: A systematic review and meta-analysis

Leonie C. P. Banning, H. G. B. Ramakers, Ramakers Kay Deckers, Frans R. J. Verhey, Pauline Aalten*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

14 Citations (Web of Science)

Abstract

Objective: APOE status has been associated to affective symptoms in cognitively impaired subjects, with conflicting results.

Methods: Databases CINAHL, Embase, PsychINFO and PubMed were searched for studies evaluating APOE genotype with affective symptoms in MCI and AD dementia. Symptoms were meta-analyzed separately and possible sources of heterogeneity were examined.

Results: Fifty-three abstracts fulfilled the eligibility criteria. No association was found between the individual symptoms and APOE epsilon 4 carriership or zygosity. For depression and anxiety, only pooled unadjusted estimates showed positive associations with between-study heterogeneity, which could be explained by variation in study design, setting and way of symptom assessment.

Conclusions: There is no evidence that APOE epsilon 4 carriership or zygosity is associated with the presence of depression, anxiety, apathy, agitation, irritability or sleep disturbances in cognitively impaired subjects. Future research should shift its focus from this single polymorphism to a more integrated view of other biological factors.

Original languageEnglish
Pages (from-to)302-315
Number of pages14
JournalNeuroscience and Biobehavioral Reviews
Volume96
DOIs
Publication statusPublished - Jan 2019

Keywords

  • Alzheimer's disease
  • MCI (mild cognitive impairment)
  • Genetics
  • Psychiatric disorders
  • Depression
  • WHITE-MATTER LESIONS
  • APO-E GENOTYPE
  • NEUROPSYCHIATRIC-SYMPTOMS
  • DEPRESSIVE SYMPTOMS
  • BEHAVIORAL SYMPTOMS
  • PSYCHOLOGICAL SYMPTOMS
  • AGGRESSIVE-BEHAVIOR
  • EPSILON-4 ALLELE
  • NO ASSOCIATION
  • E POLYMORPHISM

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