Cited by 3,181Lipoproteins and Cardiovascular HealthGenetic Associations and EpidemiologyLipid metabolism and disorders

Sequence Variations in PCSK9, Low LDL, and Protection against Coronary Heart Disease

Open access
Cohen, Jonathan C., Boerwinkle, Eric, Mosley, Thomas H., Hobbs, Helen H.·2006·New England Journal of Medicine

Abstract

BACKGROUND: A low plasma level of low-density lipoprotein (LDL) cholesterol is associated with reduced risk of coronary heart disease (CHD), but the effect of lifelong reductions in plasma LDL cholesterol is not known. We examined the effect of DNA-sequence variations that reduce plasma levels of LDL cholesterol on the incidence of coronary events in a large population. METHODS: We compared the incidence of CHD (myocardial infarction, fatal CHD, or coronary revascularization) over a 15-year interval in the Atherosclerosis Risk in Communities study according to the presence or absence of sequence variants in the proprotein convertase subtilisin/kexin type 9 serine protease gene (PCSK9) that are associated with reduced plasma levels of LDL cholesterol. RESULTS: Of the 3363 black subjects examined, 2.6 percent had nonsense mutations in PCSK9; these mutations were associated with a 28 percent reduction in mean LDL cholesterol and an 88 percent reduction in the risk of CHD (P=0.008 for the reduction; hazard ratio, 0.11; 95 percent confidence interval, 0.02 to 0.81; P=0.03). Of the 9524 white subjects examined, 3.2 percent had a sequence variation in PCSK9 that was associated with a 15 percent reduction in LDL cholesterol and a 47 percent reduction in the risk of CHD (hazard ratio, 0.50; 95 percent confidence interval, 0.32 to 0.79; P=0.003). CONCLUSIONS: These data indicate that moderate lifelong reduction in the plasma level of LDL cholesterol is associated with a substantial reduction in the incidence of coronary events, even in populations with a high prevalence of non-lipid-related cardiovascular risk factors.

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Crossref · 10.1056/nejmoa054013

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  • PCSK9 promotes degradation of LDL receptors, thereby diminishing the clearance of LDL from the circulation.

    “Proprotein convertase subtilisin-kexin type 9 (PCSK9) promotes degradation of LDL receptors, thereby diminishing the clearance of LDL from the circulation. 6”

    From Alirocumab and Cardiovascular Outcomes after Acute Coronary Syndrome (2018) · cites this paper as [6]

    The Conclusions section says that PCSK9 overexpression in mice markedly reduces hepatic LDL receptors, the main pathway for removing LDL from plasma, and raises circulating LDL cholesterol. It also says mice lacking PCSK9 have more hepatic LDL receptors and clear LDL faster. This supports the receptor-and-clearance relationship, but our copy does not specify that PCSK9 reduces receptors by promoting their degradation. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Loss-of-function mutations in PCSK9 are causatively associated with lifelong reductions in LDL-C and lower coronary heart disease risk.

    “In 2005, a causative association was established between the presence of loss-of-function mutations in PCSK9 and lifelong reductions in LDL-C associated with lower CHD risk (3).”

    From PCSK9 and the nervous system: a no-brainer? (2023) · cites this paper as [3]

    The Discussion reports that LDL-lowering PCSK9 variants were associated with substantially lower CHD incidence and suggests that lifelong LDL reduction explains the large benefit. It does not establish the claimed causal pathway: the authors acknowledge that the variants might reduce CHD through a mechanism unrelated to LDL lowering. The cited paper was published in 2006, not 2005. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Carriage of PCSK9 loss-of-function alleles is associated with lower LDL cholesterol levels and a reduced risk of myocardial infarction.

    “Genetic studies have shown that carriage of PCSK9 loss-of-function alleles is associated with lower LDL cholesterol levels and a reduced risk of myocardial infarction.7,8”

    From Evolocumab and Clinical Outcomes in Patients with Cardiovascular Disease (2017) · cites this paper as [7]

    The Discussion (page unavailable) reports that LDL-lowering PCSK9 variants were associated with reduced coronary heart disease. The Methods (page unavailable) define that outcome as a composite including myocardial infarction, CHD death, and coronary revascularization; the paper does not report a separate reduction in myocardial infarction risk. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • Drugs that reduce LDL-C predominantly through upregulation of LDL receptor expression should, barring off-target adverse effects, lead to clinical benefit in proportion to the degree of LDL-C reduction.

    “These data suggest that drugs that ultimately reduce LDL-C level predominantly through upregulation of LDL receptor expression should, barring any off-target adverse effects, lead to clinical benefit in proportion to the degree of LDL-C reduction.64”

    From Association Between Lowering LDL-C and Cardiovascular Risk Reduction Among Different Therapeutic Interventions: A Systematic Review and Meta-analysis (2016) · cites this paper as [64]

    The Discussion reports that coronary-event reductions in clinical trials were directly related to the magnitude of LDL-C reduction, and the passage on statin treatment (p. 1272) says statins increase LDL-receptor gene expression. The paper does not establish that this relationship applies to drugs generally when they predominantly act through LDL-receptor upregulation, or assess the off-target-effects condition. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • Some of the most important human metabolic disease genes have been identified using germline genetic methods such as GWAS and whole exome sequencing.

    “Some of the most important human metabolic disease genes have been identified using germline genetic methods such as GWAS and whole exome sequencing42-44.”

    From Positive selection of somatically mutated clones identifies adaptive pathways in metabolic liver disease (2023) · cites this paper as [44]

    The Methods and Results describe a study of inherited PCSK9 variants associated with lower LDL cholesterol and reduced coronary heart disease risk. The Genotyping section specifies targeted TaqMan assays for known variants; the paper does not say that PCSK9 was identified by GWAS or whole-exome sequencing. (LLM, conf=0.86)

    Experimental — accuracy not yet measured

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Research works printed but not linked: 2

  1. [9]9. convertase subtilisin/kexin type 9a in mouse liver. J Biol Chem 2004;279:50630-8.
  2. [17]17. heart disease continuous and graded? Findings in 356,222 primary screenees of the Multiple Risk Factor Intervention Trial (MRFIT). JAMA 1986;256:2823-8.

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Authors
Cohen, J. C., Boerwinkle, E., Mosley, T. H., & Hobbs, H. H.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • The University of Texas Health Science Center at Houston (US)
  • Howard Hughes Medical Institute (US)
Venue
New England Journal of Medicine
Published
2006-03-23
Volume
354
Issue
12
Pages
1264-1272
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2067539811
Cited by
3,181
References
28
Citations by year
2026: 130 · 2025: 121 · 2024: 150 · 2023: 182 · 2022: 169 · 2021: 175 · 2020: 193 · 2019: 180 · 2018: 210 · 2017: 229 · 2016: 235 · 2015: 244 · 2014: 171 · 2013: 145 · 2012: 126
FWCI
104.04
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • W. M. Keck Foundation
  • Donald W. Reynolds Foundation
  • National Institutes of Health (n01hc55021-47-0-1, n01hc55020-39-0-0, n01hc55016-37-0-0, n01hc055022-024, n01hc55019-35-0-1, n01hc55018-38-0-1, N01-HC55020, N01-HC-55021, HL20948, N01-HC-55019, N01-HC-55022, N01-HC55016, N01-HC55018, N01-HC-55015, n01hc55015-48-0-1)
  • National Heart, Lung, and Blood Institute (N01-HC55022, N01-HC-55018, HL-20948, N01 HC 55020, N01-HC-55015, N01-HC-55016, N01-HC-55018, N01-HC-55019, N01-HC-55020, N01-HC-55021, and N01-HC-55022, N01 HC 55019, ­N01-HC55016, P01HL020948, N01‐HC‐55015, N01-HC55021)
Topics
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
PCSK9, LDL cholesterol, coronary artery disease, myocardial infarction, coronary revascularization, nonsense mutation, genetic variants, LDL cholesterol lowering, cardiovascular risk, Atherosclerosis Risk in Communities Study, black and white populations
MeSH terms
Proprotein Convertase 9, Black or African American, Carotid Arteries, Coronary Disease, Female, Gene Frequency, Genotype, Humans, Hypolipoproteinemias, Cholesterol, LDL, Male, Middle Aged, Risk, Serine Endopeptidases, United States, Genetic Variation, Cohort Studies, Incidence, Proportional Hazards Models, Codon, Nonsense, Proprotein Convertases, Black People, White People

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