Cited by 127Lipoproteins and Cardiovascular HealthGenetic Associations and EpidemiologyParaoxonase enzyme and polymorphisms

Mendelian Randomization Study of PCSK9 and HMG-CoA Reductase Inhibition and Cognitive Function

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Rosoff, Daniel B., Bell, Andrew S., Jung, Jeesun, Wagner, Josephin, Mavromatis, Lucas A., Lohoff, Falk W.·2022·Journal of the American College of Cardiology

Abstract

BACKGROUND: Lipid-lowering therapy with statins and proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibition are effective strategies in reducing cardiovascular disease risk; however, concerns remain about potential long-term adverse neurocognitive effects. OBJECTIVES: This genetics-based study aimed to evaluate the relationships of long-term PCSK9 inhibition and statin use on neurocognitive outcomes. METHODS: We extracted single-nucleotide polymorphisms in 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGCR) and PCSK9 from predominantly European ancestry-based genome-wide association studies summary-level statistics of low-density lipoprotein cholesterol and performed drug-target Mendelian randomization, proxying the potential neurocognitive impact of drug-based PCSK9 and HMGCR inhibition using a range of outcomes to capture the complex facets of cognition and dementia. RESULTS: Using data from a combined sample of ∼740,000 participants, we observed a neutral cognitive profile related to genetic PCSK9 inhibition, with no significant effects on cognitive performance, memory performance, or cortical surface area. Conversely, we observed several adverse associations for HMGCR inhibition with lowered cognitive performance (beta: -0.082; 95% CI: -0.16 to -0.0080; P = 0.03), reaction time (beta = 0.00064; 95% CI: 0.00030-0.00098; P = 0.0002), and cortical surface area (beta = -0.18; 95% CI: -0.35 to -0.014; P = 0.03). Neither PCSK9 nor HMGCR inhibition impacted biomarkers of Alzheimer's disease progression or Lewy body dementia risk. Consistency of findings across Mendelian randomization methods accommodating different assumptions about genetic pleiotropy strengthens causal inference. CONCLUSIONS: Using a wide range of cognitive function and dementia endpoints, we failed to find genetic evidence of an adverse PCSK9-related impact, suggesting a neutral cognitive profile. In contrast, we observed adverse neurocognitive effects related to HMGCR inhibition, which may well be outweighed by the cardiovascular benefits of statin use, but nonetheless may warrant pharmacovigilance.

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Authors
Rosoff, D. B., Bell, A. S., Jung, J., Wagner, J., Mavromatis, L. A., & Lohoff, F. W.
Affiliations
National Institutes of Health (US)
Corresponding author
Lohoff, Falk W.
Venue
Journal of the American College of Cardiology
Publisher
Elsevier BV
Published
2022-08
Volume
80
Issue
7
Pages
653-662
ISSN
0735-1097 (ISSN-L)
OpenAlex
W4290721542
Cited by
126
References
64
Citations by year
2026: 16 · 2025: 44 · 2024: 41 · 2023: 22 · 2022: 3
FWCI
26.52
Type
journal article
Language
en
Open access
Locations
  • Journal of the American College of Cardiology (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • University of Bristol
  • National Institutes of Health (ZIA-AA000242)
  • Medical Research Council
  • National Institute on Alcohol Abuse and Alcoholism
Topics
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Paraoxonase enzyme and polymorphisms
Keywords
PCSK9 inhibition, HMG-CoA reductase inhibition, statins, cognitive function, dementia risk, Alzheimer's disease biomarkers, dementia with Lewy bodies, cortical surface area, reaction time, memory performance, LDL cholesterol, pleiotropy, pharmacovigilance
MeSH terms
Proprotein Convertase 9, Acyl Coenzyme A, Alzheimer Disease, Cognition, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors, Genome-Wide Association Study, Mendelian Randomization Analysis

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