Cited by 96Lipoproteins and Cardiovascular HealthDiabetes, Cardiovascular Risks, and LipoproteinsParaoxonase enzyme and polymorphisms

Is Isolated Low High-Density Lipoprotein Cholesterol a Cardiovascular Disease Risk Factor?: New Insights From the Framingham Offspring Study

Open access
Bartlett, Jacquelaine, Predazzi, Irene M., Williams, Scott M., Bush, William S., Kim, Yeunjung, Havas, Stephen, Toth, Peter P., Fazio, Sergio +1 more·2016·Circulation: Cardiovascular Quality and Outcomes

Abstract

Background—: Although the inverse association between high-density lipoprotein cholesterol (HDL-C) and risk of cardiovascular disease (CVD) has been long established, it remains unclear whether low HDL-C remains a CVD risk factor when levels of low-density lipoprotein cholesterol (LDL-C) and triglycerides (TG) are not elevated. This is a timely issue because recent studies have questioned whether HDL-C is truly an independent predictor of CVD. Methods and Results—: 3590 men and women from the Framingham Heart Study offspring cohort without known CVD were followed between 1987 and 2011. Low HDL-C (<40 mg/dL in men and <50 mg/dL in women) was defined as isolated if TG and LDL-C were both low (<100 mg/dL). We also examined higher thresholds for TG (150 mg/dL) and LDL-C (130 mg/dL) and compared low versus high HDL-C phenotypes using logistic regression analysis to assess association with CVD. Compared with isolated low HDL-C, CVD risks were higher when low HDL-C was accompanied by LDL-C ≥100 mg/dL and TG <100 mg/dL (odds ratio 1.3 [1.0, 1.6]), TG ≥100 mg/dL and LDL-C <100 mg/dL (odds ratio 1.3 [1.1, 1.5]), or TG and LDL-C ≥100 mg/dL (odds ratio 1.6, [1.2, 2.2]), after adjustment for covariates. When low HDL-C was analyzed with higher thresholds for TG (≥150 mg/dL) and LDL-C (≥130 mg/dL), results were essentially the same. In contrast, compared with isolated low HDL-C, high HDL-C was associated with 20% to 40% lower CVD risk except when TG and LDL-C were elevated. Conclusions—: CVD risk as a function of HDL-C phenotypes is modulated by other components of the lipid panel.

AI snapshot

Written from the paper’s full text.

TL;DR

In the Framingham Offspring Study, isolated low HDL-C was uncommon and less predictive of incident CVD than low HDL-C accompanied by higher LDL-C, higher triglycerides, or both. HDL-C phenotypes were not uniformly predictive; TG and LDL-C modified CVD risk at both low and high HDL-C levels.

Key findings

  • Among 3590 men and women without known CVD followed from 1987 to 2011, isolated low HDL-C (HDL-C <40 mg/dL in men or <50 mg/dL in women, with TG and LDL-C both <100 mg/dL) occurred in only 84 participants (2.3%).
  • Compared with isolated low HDL-C, adjusted CVD odds ratios were higher when low HDL-C was accompanied by LDL-C ≥100 mg/dL and TG <100 mg/dL (OR 1.3 [1.0, 1.6]), TG ≥100 mg/dL and LDL-C <100 mg/dL (OR 1.3 [1.1, 1.5]), or both TG and LDL-C ≥100 mg/dL (OR 1.6 [1.2, 2.2]).
  • Using higher thresholds for TG (≥150 mg/dL) and/or LDL-C (≥130 mg/dL) produced essentially the same results.
  • Compared with isolated low HDL-C, isolated high HDL-C was associated with lower CVD risk (OR 0.6 [0.5, 0.7]); this persisted with higher LDL-C or higher TG alone, but was no longer significantly protective when both LDL-C and TG were ≥100 mg/dL.

Methods

  • Prospective cohort analysis of Framingham Heart Study Offspring Cohort participants whose baseline evaluation was Examination cycle 4 (1987–1991), with incident CVD monitored through 2011.
  • From 3925 initial samples, 188 were excluded for loss to follow-up, baseline CVD history, or TG >400 mg/dL; after excluding 147 lipid-lowering therapy users, the final sample was 3590.
  • Logistic regression estimated odds ratios for incident CVD (fatal/nonfatal MI, stroke, or CVD death), adjusted for age, gender, diabetes, hypertension, and smoking status; isolated low HDL-C was the referent.

Limitations

  • The paper states that the study lacked additional measures such as apoB or LDL particle concentration that may improve CVD risk prediction beyond conventional lipids and lipoproteins.
  • The paper states there was a relative paucity of cases with isolated low HDL-C using the stringent <100 mg/dL thresholds for TG and LDL-C.
  • Evident from the methods: blood samples were single measurements from Examination cycle 4, and the observational design leaves potential for residual confounding despite covariate adjustment.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1161/circoutcomes.115.002436

Cites

46 of 46 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 46 cited sources checked · 0 supported · 0 flagged

  • Findingown data

    Isolated low HDL-C using the lowest thresholds (<100 mg/dL for TG and LDL-C) was uncommon (n=84, 2.3% of the study cohort).

    “Whereas isolated low HDL-C using the lowest thresholds to define low TG and LDL-C (i.e., < 100 mg/dL) was uncommon (n=84, 2.3% of the study cohort)”
    Quote in the paperNot a substantial claim
  • Findingown data

    When low HDL-C was analyzed with higher thresholds for TG (≥150 mg/dL) and/or LDL-C (≥130 mg/dL), results were essentially the same.

    “When low HDL-C was analyzed with higher thresholds for TG (≥150 mg/dL) and/or LDL-C (≥130 mg/dL) results were essentially the same.”
    • Also stated in: § Discussion · plain
      “we observed similar trends with higher thresholds of the other risk factors that had larger cell sizes.”
    Quote in the paperNot a substantial claim
  • Findingown data

    Compared to isolated low HDL-C, isolated high HDL-C was associated with reduced CVD risk (OR = 0.6 [0.5, 0.7]).

    “In contrast, compared to isolated low HDL-C, isolated high HDL-C (low levels of TG and LDL-C in the presence of high HDL-C) was consistently associated with reduced CVD risk (OR = 0.6, [0.5,0.7]).”
    Quote in the paperSubstantial claim
  • Findingown data

    Compared to isolated low HDL-C, CVD risk was higher when low HDL-C was accompanied by LDL-C ≥100 mg/dL and TG <100 mg/dL (OR 1.3 [1.0, 1.6]) after adjustment for covariates.

    “Compared to isolated low HDL-C, CVD risks were higher when low HDL-C was accompanied by LDL-C ≥100 mg/dL and TG <100 mg/dL (OR 1.3 [1.0, 1.6])”
    • Also stated in: § Results · plain
      “Compared to isolated low HDL-C, CVD was higher when low HDL-C was accompanied by LDL-C ≥100 mg/dL (OR 1.3 [1.0, 1.6]”
    Quote in the paperSubstantial claim
  • Findingown data

    Compared to isolated low HDL-C, CVD risk was higher when low HDL-C was accompanied by TG ≥100 mg/dL and LDL-C <100 mg/dL (OR 1.3 [1.1, 1.5]) after adjustment.

    “TG ≥100 mg/dL and LDL-C <100 mg/dL (OR 1.3 [1.1, 1.5])”
    • Also stated in: § Results · plain
      “TG ≥100 mg/dL (OR 1.3 [1.1, 1.5])”
    Quote in the paperSubstantial claim
  • May combine two claims. 7
  • Classified as probably not a substantial claim. 11
  • May combine two claims.

    Findingown data

    Compared to isolated low HDL-C, high HDL-C was associated with 20-40% lower CVD risk except when TG and LDL-C were elevated.

    “In contrast, compared to isolated low HDL-C, high HDL-C was associated with 20-40% lower CVD risk except when TG and LDL-C were elevated.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    CVD risk was associated with low HDL-C but this relationship was influenced by LDL-C and/or TG.

    “CVD risk was associated with low HDL-C but this relationship was influenced by LDL-C and/or TG (Table 2).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Increased TG and LDL-C appreciably raised CVD risk.

    “We also found that increased TG and LDL-C appreciably raised CVD risk”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The isolated low HDL-C group had relatively normal mean BMI (26.1±6.3 kg/m2), SBP (118±20 mmHg), and low diabetes prevalence (6%).

    “The group with isolated low HDL-C (mean: 35±4 mg/dL [men], 44±4 mg/dL [women]) was characterized by a relatively normal mean body mass index (BMI= 26.1±6.3 kg/m2), systolic blood pressure (SBP= 118±20 mmHg) and a low prevalence of diabetes (6%)”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    HDL particles drive reverse cholesterol transport and may exert a variety of anti-atherogenic effects.

    “This is biologically plausible since HDL particles drive reverse cholesterol transport and may exert a variety of anti-atherogenic effects3.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [3] Toth PP Barter PJ Rosenson RS Boden WE Chapman MJ Cuchel M D'Agostino RB Sr Davidson MH Davidson WS Heinecke JW Karas RH Kontush A Krauss RM Miller M Rader DJ High-density lipoproteins: a consensus statement from the National Lipid Association. J Clin Lipidol 2013 7 484 525 24079290 source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation

    Low HDL-C has been documented as a critical risk factor for estimating 10-year risk of CVD.

    “have been documented as a critical risk factor for estimating 10-year risk of CVD2.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [2] Sheridan S Pignone M Mulrow C Framingham-based tools to calculate the global risk of coronary heart disease: a systematic review of tools for clinicians. J Gen Intern Med 2003 18 1039 52 14687264 PMC1494957 source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation

    Low HDL-C has long been viewed as a robust and independent CVD risk factor.

    “For many decades, a low level of HDL-C has been viewed as a robust and independent CVD risk factor1-4.”
    • Also stated in: § Introduction · plain
      “Low levels of high-density lipoprotein cholesterol (HDL-C) have long been associated with increased risk for cardiovascular disease (CVD)1”
    Quote in the paperSubstantial claim0 of 4 sources checked
    • cites [1] Miller GJ Miller NE Plasma-high-density-lipoprotein concentration and development of ischaemic heart-disease. Lancet 1975 1 16 9 46338 source

      Not checked in the free run.

    • cites [2] Sheridan S Pignone M Mulrow C Framingham-based tools to calculate the global risk of coronary heart disease: a systematic review of tools for clinicians. J Gen Intern Med 2003 18 1039 52 14687264 PMC1494957 source

      Not checked in the free run.

    • cites [3] Toth PP Barter PJ Rosenson RS Boden WE Chapman MJ Cuchel M D'Agostino RB Sr Davidson MH Davidson WS Heinecke JW Karas RH Kontush A Krauss RM Miller M Rader DJ High-density lipoproteins: a consensus statement from the National Lipid Association. J Clin Lipidol 2013 7 484 525 24079290 source

      Not checked in the free run.

    • cites [4] Castelli WP Doyle JT Gordon T Hames CG Hjortland MC Hulley SB Kagan A Zukel WJ HDL cholesterol and other lipids in coronary heart disease. The cooperative lipoprotein phenotyping study. Circulation 1977 55 767 72 191215 source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Study design and conductnone given

    Analyses were adjusted for age at initial lipid profiling, gender, diabetes, hypertension, and smoking status.

    “Analyses were adjusted for age at initial lipid profiling, gender, diabetes, hypertension, and smoking status.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    TRLs have been implicated in pro-inflammatory signaling pathways, impairment of insulin sensitivity and upregulation of factors promoting thrombosis.

    “Specifically, TRLs have been implicated in pro-inflammatory signaling pathways, impairment of insulin sensitivity and upregulation of factors promoting thrombosis.22,23”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [22] Welty FK How do elevated triglycerides and low HDL-cholesterol affect inflammation and atherothrombosis? Curr Cardiol Rep 2013 15 400 23881582 PMC4465984 source

      Not checked in the free run.

    • cites [23] Rosenson RS Davidson MH Hirsh BJ Kathiresan S Gaudet D Genetics and causality of triglyceride-rich lipoproteins in atherosclerotic cardiovascular disease. J Am Coll Cardiol 2014 64 2535 2540 25500239 source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Functionality rather than cholesterol content of HDL has been viewed as a better predictor of CVD risk based on anti-inflammatory, anti-oxidant and endothelial restorative properties of HDL.

    “As such, functionality rather than the cholesterol content of HDL has been viewed as a better predictor of CVD risk based on the well-established anti-inflammatory, anti-oxidant and endothelial restorative properties of HDL.36”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [36] Lefer AM Prostacyclin, high density lipoproteins, and myocardial ischemia. Circulation 1990 81 2013 5 2111745 source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    HDL function may be more predictive of CVD risk compared with its cholesterol content (HDL-C levels).

    “Indeed recent studies suggest that HDL function may be more predictive of CVD risk compared with its cholesterol content35, as reflected by HDL-C levels.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [35] Khera AV Cuchel M de la Llera-Moya M Rodrigues A Burke MF Jafri K French BC Phillips JA Mucksavage ML Wilensky RL Mohler ER Rothblat GH Rader DJ Cholesterol efflux capacity, high-density lipoprotein function, and atherosclerosis. N Engl J Med 2011 364 127 35 21226578 PMC3030449 source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Elevated TG and insulin resistance may both impair HDL function and predate the development of diabetes.

    “In this regard, elevated TG and insulin resistance may both impair HDL function37-39 and predate the development of diabetes.40”
    Quote in the paperNot a substantial claim0 of 4 sources checked
    • cites [37] Skeggs JW Morton RE LDL and HDL enriched in triglyceride promote abnormal cholesterol transport. J Lipid Res 2002 43 1264 74 12177170 source

      Not checked in the free run.

    • cites [38] Greene DJ Skeggs JW Morton RE Elevated triglyceride content diminishes the capacity of high density lipoprotein to deliver cholesteryl esters via the scavenger receptor class B type I (SR-BI). J Biol Chem 2001 276 4804 11 11067853 source

      Not checked in the free run.

    • cites [39] Barylski M Toth PP Nikolic D Banach M Rizzo M Montalto G Emerging therapies for raising high-density lipoprotein cholesterol (HDL-C) and augmenting HDL particle functionality. Best Pract Res Clin Endocrinol Metab 2014 28 453 61 24840270 source

      Not checked in the free run.

    • cites [40] Haffner SM Stern MP Hazuda HP Mitchell BD Patterson JK Cardiovascular risk factors in confirmed prediabetic individuals. Does the clock for coronary heart disease start ticking before the onset of clinical diabetes? JAMA 1990 263 2893 8 2338751 source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The Framingham Heart Study was the first large epidemiological study in the U.S. to demonstrate an inverse association between low HDL-C and coronary heart disease.

    “The Framingham Heart Study was the first large epidemiological study in the U.S to demonstrate an inverse association between low HDL-C and coronary heart disease32”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [32] Gordon T Castelli WP Hjortland MC Kannel WB Dawber TR High density lipoprotein as a protective factor against coronary heart disease. The Framingham Study. Am J Med 1977 62 707 14 193398 source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Prior studies demonstrate a 30-60% increase in CVD risk when LDL-C exceeded 130 mg/dL.

    “consistent with prior studies demonstrating a 30-60% increase in CVD risk when LDL-C exceeded 130 mg/dL15”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [15] National Cholesterol Education Program Expert Panel on Detection Evaluation and Treatment of High Blood Cholesterol in Adults Third Report of the National Cholesterol Education Program (NCEP) Expert Panel on Detection, Evaluation, and Treatment of High Blood Cholesterol in Adults (Adult Treatment Panel III) final report. Circulation 2002 106 3143 421 12485966 source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S1 (asserted), S3 (load-bearing).

    Premisecitation

    TG-rich lipoproteins (TRLs) and their cholesterol-enriched remnants play a causative role in disease.

    “some proposing that TG-rich lipoproteins (TRLs; e.g., very low density lipoprotein) and their cholesterol-enriched remnants play a causative role in disease.20,21”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [20] Do R Willer CJ Schmidt EM Sengupta S Gao C Peloso GM Gustafsson S Kanoni S Ganna A Chen J Buchkovich ML Mora S Beckmann JS Bragg-Gresham JL Chang HY Demirkan A Den Hertog HM Donnelly LA Ehret GB Esko T Feitosa MF Ferreira T Fischer K Fontanillas P Fraser RM Freitag DF Gurdasani D Heikkilä K Hyppönen E Isaacs A Jackson AU Johansson A Johnson T Kaakinen M Kettunen J Kleber ME Li X Luan J Lyytikäinen LP Magnusson PK Mangino M Mihailov E Montasser ME Müller-Nurasyid M Nolte IM O'Connell JR Palmer CD Perola M Petersen AK Sanna S Saxena R Service SK Shah S Shungin D Sidore C Song C Strawbridge RJ Su source

      Not checked in the free run.

    • cites [21] Varbo A Benn M Tybjaerg-Hansen A Nordestgaard BG Elevated remnant cholesterol causes both low-grade inflammation and ischemic heart disease, whereas elevated low-density lipoprotein cholesterol causes ischemic heart disease without inflammation. Circulation 2013 128 1298 309 23926208 source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Prior studies demonstrate an approximate 10-20% increase in CVD risk when TG exceeded 150 mg/dL compared to <100 mg/dL.

    “and an approximate 10-20% increase in CVD risk when TG exceeded 150 mg/dL compared to < 100 mg/dL.19”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [19] Miller M Cannon CP Murphy SA Qin J Ray KK Braunwald E PROVE IT-TIMI 22 Investigators. Impact of triglyceride levels beyond low-density lipoprotein cholesterol after acute coronary syndrome in the PROVE IT-TIMI 22 trial. J Am Coll Cardiol 2008 51 724 30 18279736 source

      Not checked in the free run.

16 of 16
  • The paper relies on this without support.

    Fasting TG levels were not routinely measured in the original Framingham cohort until approximately 2 decades ago.

    “This issue could not have been addressed in the original Framingham cohort because fasting TG levels were not routinely measured until approximately 2 decades ago.”
  • The paper relies on this without support.

    The Framingham offspring cohort provides a unique opportunity to systematically investigate the effects of low HDL-C, both in isolation and within the framework of elevated TG and LDL-C.

    “Consequently, the Framingham offspring cohort provides a unique opportunity to systematically investigate the effects of low HDL-C, both in isolation and within the framework of elevated TG and LDL-C.”
2 of 2

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • When both triglycerides and LDL-C are at least 100 mg/dl, cardiovascular risk increases by 60% in the setting of low HDL-C.

    “When both TG and LDL-C are ≥100 mg/dl, CV risk increases by 60% [6].”

    From HDL cholesterol: reappraisal of its clinical relevance (2017) · cites this paper as [6]

  • Compared with low HDL-C in isolation, cardiovascular risk increases by 30% when low HDL-C occurs together with high LDL-C and/or high triglycerides.

    “Cardiovascular (CV) risk increases by 30% for LDL-C ≥ 100 mg/dl and TG < 100 mg/dl or LDL-C < 100 mg/dl and TG ≥ 100 mg/dl.”

    From HDL cholesterol: reappraisal of its clinical relevance (2017) · cites this paper as [6]

  • The predictive value of HDL-C is modified by LDL-C and triglycerides.

    “A very recent analysis of the Framingham study reports that the predictive value of HDL-C is modified by LDL cholesterol (LDL-C) and triglycerides (TG):”

    From HDL cholesterol: reappraisal of its clinical relevance (2017) · cites this paper as [6]

Cites

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Authors
Bartlett, J., Predazzi, I. M., Williams, S. M., Bush, W. S., Kim, Y., Havas, S., Toth, P. P., Fazio, S., & Miller, M.
Affiliations
Dartmouth College (US)
Venue
Circulation: Cardiovascular Quality and Outcomes
Published
2016-05
Volume
9
Issue
3
Pages
206-212
ISSN
  • 1941-7705 (ISSN-L)
  • 1941-7713
OpenAlex
W2365864671
Cited by
96
References
48
Citations by year
2026: 4 · 2025: 7 · 2024: 10 · 2023: 6 · 2022: 8 · 2021: 12 · 2020: 13 · 2019: 11 · 2018: 12 · 2017: 7 · 2016: 5 · 2014: 1
FWCI
12.92
Type
journal article
Language
en
Open access
Locations
  • Circulation Cardiovascular Quality and Outcomes (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • U.S. Department of Veterans Affairs (I01CX000147)
  • National Heart, Lung, and Blood Institute (R01HL057986, T32HL007751, R01HL106845, R21HL094980)
  • National Institute of General Medical Sciences (P20GM103534)
Topics
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Clinical Biochemistry › Paraoxonase enzyme and polymorphisms
Keywords
low HDL cholesterol, cardiovascular risk, triglycerides, LDL cholesterol, lipid profile, Framingham Offspring cohort
MeSH terms
Adult, Cardiovascular Diseases, Female, Humans, Cholesterol, HDL, Cholesterol, LDL, Male, Massachusetts, Middle Aged, Phenotype, Risk Factors, Time Factors, Triglycerides, Biomarkers, Down-Regulation, Incidence, Logistic Models, Odds Ratio, Dyslipidemias

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