Abstract
Introduction: There is conflicting evidence whether high-density lipoprotein cholesterol (HDL-C) is a risk factor for Alzheimer's disease (AD) and dementia. Genetic variation in the cholesteryl ester transfer protein (CETP) locus is associated with altered HDL-C. We aimed to assess AD risk by genetically predicted HDL-C. Methods: Ten single nucleotide polymorphisms within the CETP locus predicting HDL-C were applied to the International Genomics of Alzheimer's Project (IGAP) exome chip stage 1 results in up 16,097 late onset AD cases and 18,077 cognitively normal elderly controls. We performed instrumental variables analysis using inverse variance weighting, weighted median, and MR-Egger. Results: Based on 10 single nucleotide polymorphisms distinctly predicting HDL-C in the CETP locus, we found that HDL-C was not associated with risk of AD (P >.7). Discussion: Our study does not support the role of HDL-C on risk of AD through HDL-C altered by CETP. This study does not rule out other mechanisms by which HDL-C affects risk of AD.
Original language | English (US) |
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Pages (from-to) | 595-598 |
Number of pages | 4 |
Journal | Alzheimer's and Dementia: Diagnosis, Assessment and Disease Monitoring |
Volume | 10 |
DOIs | |
State | Published - Jan 1 2018 |
Funding
G.M. Peloso is supported by the National Heart, Lung, and Blood Institute of the National Institutes of Health under award number K01HL125751 . S.S. and A.L.D. are supported by grants from the National Institute on Aging : R01 AG054076 , R01 AG033193 , U01 AG049505 , R01 AG008122 (S. Seshadri), and R01AG049607 ) and the National Institute of Neurological Disorders and Stroke ( R01-NS017950 ). The authors thank all the participants and studies contributing to the GLGC and IGAP exome chip results. A full list of collaborators from the IGAP exome chip consortium is listed in the supplement.
Keywords
- Cholesteryl ester transfer protein
- Genetics
- HDL-C
- Instrumental variables
- Single nucleotide polymorphisms
ASJC Scopus subject areas
- Clinical Neurology
- Psychiatry and Mental health