Cited by 301Lipoproteins and Cardiovascular HealthDiabetes, Cardiovascular Risks, and LipoproteinsLipid metabolism and disorders

Association Between Triglyceride Lowering and Reduction of Cardiovascular Risk Across Multiple Lipid-Lowering Therapeutic Classes: A Systematic Review and Meta-Regression Analysis of Randomized Controlled Trials

Open access
Marston, Nicholas A., Giugliano, Robert P., Im, KyungAh, Silverman, Michael G., O’Donoghue, Michelle L., Wiviott, Stephen D., Ference, Brian A., Sabatine, Marc S.·2019·Circulation

Abstract

Background: Randomized trials of therapies that primarily lowered triglycerides have not consistently shown reductions in cardiovascular events. Methods: We performed a systematic review and trial-level meta-regression analysis of 3 classes of lipid-lowering therapies that reduce triglycerides to a greater extent than they do low-density lipoprotein cholesterol (LDL-C): fibrates, niacin, and marine-derived omega-3 fatty acids. Key inclusion criteria were a randomized controlled trial that reported major vascular events. We also incorporated data from a previous meta-regression of 25 statin trials. The main outcome measure was the risk ratio (RR) for major vascular events associated with absolute reductions in lipid parameters. Results: A total of 197 270 participants from 24 trials of nonstatin therapy with 25 218 major vascular events and 177 088 participants from 25 trials of statin therapy with 20 962 major vascular events were included, for a total of 374 358 patients and 46 180 major cardiovascular events. Starting with non–high-density lipoprotein cholesterol, a surrogate for very-low-density lipoproteins and low-density lipoproteins, the RR per 1-mmol/L reduction in non–high-density lipoprotein cholesterol was 0.79 (95% CI, 0.76–0.82; P <0.0001; 0.78 per 40 mg/dL). In a multivariable meta-regression model that included terms for both LDL-C and triglyceride (surrogates for low-density lipoproteins and very-low-density lipoproteins, respectively), the RR was 0.80 (95% CI, 0.76–0.85; P <0.0001) per 1-mmol/L (0.79 per 40 mg/dL) reduction in LDL-C and 0.84 (95% CI, 0.75–0.94; P =0.0026) per 1-mmol/L (0.92 per 40 mg/dL) reduction in triglycerides. REDUCE-IT (Reduction of Cardiovascular Events With Icosapent Ethyl–Intervention Trial) was a significant outlier and strongly influential trial in the meta-regression. When removed, the RRs became 0.79 (95% CI, 0.76–0.83; P <0.0001) per 1-mmol/L (0.78 per 40 mg/dL) reduction in LDL-C and 0.91 (95% CI, 0.81–1.006; P =0.06) per 1-mmol/L (0.96 per 40 mg/dL) reduction in triglycerides. In regard to omega-3 dose, each 1 g/d eicosapentaenoic acid administered was associated with a 7% relative risk reduction in major vascular events (RR, 0.93 [95% CI, 0.91–0.95]; P <0.0001), whereas there was no significant association between the dose of docosahexaenoic acid and the relative risk reduction in major vascular events (RR 0.96 [95% CI, 0.89–1.03]). Conclusions: In randomized controlled trials, triglyceride lowering is associated with a lower risk of major vascular events, even after adjustment for LDL-C lowering, although the effect is less than that for LDL-C and attenuated when REDUCE-IT is excluded. Furthermore, the benefits of marine-derived omega-3 fatty acids, particularly high-dose eicosapentaenoic acid, appear to exceed their lipid-lowering effects.

Integrity signals

Registry

Crossref · 10.1161/circulationaha.119.041998

Cites

55 of 55 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

19 of 27 cited sources checked · 11 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    The association between triglycerides and cardiovascular risk is well established from epidemiological studies, genome-wide analyses, and Mendelian randomization studies.

    “The association between triglycerides and cardiovascular (CV) risk is well established from epidemiological studies,1-5 genome-wide analyses,6-8 and Mendelian randomization studies.9,10”
    Quote in the paperSubstantial claim7 of 10 sources checked
    • cites [1] Nordestgaard BG, Benn M, Schnohr P, Tybjaerg-Hansen A. Nonfasting triglycerides and risk of myocardial infarction, ischemic heart disease, and death in men and women. JAMA. 2007; 298: 299– 308. 17635890 source
    • cites [2] Sarwar N, Danesh J, Eiriksdottir G, Sigurdsson G, Wareham N, Bingham S, Boekholdt SM, Khaw KT, Gudnason V. Triglycerides and the risk of coronary heart disease: 10,158 incident cases among 262,525 participants in 29 Western prospective studies. Circulation. 2007; 115: 450– 458. 17190864 source
    • cites [3] Miller M, Cannon CP, Murphy SA, Qin J, Ray KK, Braunwald E, Investigators PI-T. 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– 730. 18279736 source
    • cites [4] Triglyceride Coronary Disease Genetics C, Emerging Risk Factors C, Sarwar N, Sandhu MS, Ricketts SL, Butterworth AS, Di Angelantonio E, Boekholdt SM, Ouwehand W, Watkins H, Triglyceride-mediated pathways and coronary disease: collaborative analysis of 101 studies. Lancet. 2010; 375: 1634– 1639. 20452521 PMC2867029 source
    • cites [5] Miller M, Stone NJ, Ballantyne C, Bittner V, Criqui MH, Ginsberg HN, Goldberg AC, Howard WJ, Jacobson MS, Kris-Etherton PM, Triglycerides and cardiovascular disease: a scientific statement from the American Heart Association. Circulation. 2011; 123: 2292– 2333. 21502576 source
    • cites [6] Do R, Willer CJ, Schmidt EM, Sengupta S, Gao C, Peloso GM, Gustafsson S, Kanoni S, Ganna A, Chen J, Common variants associated with plasma triglycerides and risk for coronary artery disease. Nat Genet. 2013; 45: 1345– 1352. 24097064 PMC3904346 source
    • cites [7] Teslovich TM, Musunuru K, Smith AV, Edmondson AC, Stylianou IM, Koseki M, Pirruccello JP, Ripatti S, Chasman DI, Willer CJ, Biological, clinical and population relevance of 95 loci for blood lipids. Nature. 2010; 466: 707– 713. 20686565 PMC3039276 source
    • cites [8] Willer CJ, Schmidt EM, Sengupta S, Peloso GM, Gustafsson S, Kanoni S, Ganna A, Chen J, Buchkovich ML, Mora S, Discovery and refinement of loci associated with lipid levels. Nat Genet. 2013; 45: 1274– 1283. 24097068 PMC3838666 source
    • cites [9] Varbo A, Benn M, Tybjaerg-Hansen A, Jorgensen AB, Frikke-Schmidt R, Nordestgaard BG. Remnant cholesterol as a causal risk factor for ischemic heart disease. J Am Coll Cardiol. 2013; 61: 427– 436. 23265341 source
    • cites [10] 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– 1309. 23926208 source

      The Abstract describes a Mendelian randomization study and reports that triglycerides and remnant cholesterol are highly correlated. The Risk of IHD: Observational and Causal Associations section reports increased ischemic heart disease risk with genetically higher remnant cholesterol. The study tests remnant cholesterol, however, rather than a direct triglyceride–cardiovascular risk association; it therefore supports the Mendelian-randomization portion of the claim only indirectly. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
  • Premisecitation

    On a mg/dL basis, the association of triglycerides with major vascular events is less strong than that for LDL-C.

    “but also that, on a mg/dL basis, the association of triglycerides with major vascular events is less strong as that for LDL-C.6,8,35”
    Quote in the paperSubstantial claim3 of 3 sources checked
    • cites [6] Do R, Willer CJ, Schmidt EM, Sengupta S, Gao C, Peloso GM, Gustafsson S, Kanoni S, Ganna A, Chen J, Common variants associated with plasma triglycerides and risk for coronary artery disease. Nat Genet. 2013; 45: 1345– 1352. 24097064 PMC3904346 source

      The paper reports associations of both triglycerides and LDL-C with coronary artery disease across lipid-associated SNPs (Abstract; page unavailable). It does not compare their association strengths per mg/dL or assess the broader outcome of major vascular events. The Online Methods specify that lipid effects were measured in standard-deviation units, not mg/dL. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
    • cites [8] Willer CJ, Schmidt EM, Sengupta S, Peloso GM, Gustafsson S, Kanoni S, Ganna A, Chen J, Buchkovich ML, Mora S, Discovery and refinement of loci associated with lipid levels. Nat Genet. 2013; 45: 1274– 1283. 24097068 PMC3838666 source

      In Results, under “Association of individual lipids with coronary artery disease” (page unavailable), the correlation between lipid-locus effects and CAD effects is lower for triglycerides (r=0.46) than for LDL cholesterol (r=0.74). This supports a narrower comparison of genetic associations, not the claimed difference in association per mg/dL with major vascular events; the paper reports CAD rather than that broader outcome. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
    • cites [35] Ference BA, Kastelein JJP, Ray KK, Ginsberg HN, Chapman MJ, Packard CJ, Laufs U, Oliver-Williams C, Wood AM, Butterworth AS, Association of Triglyceride-Lowering LPL Variants and LDL-C-Lowering LDLR Variants With Risk of Coronary Heart Disease. JAMA. 2019; 321: 364– 373. 30694319 PMC6439767 source
  • Premisecitation

    Recent genetic data show that lower levels of apoB-containing particles, whether cholesterol-rich LDL or triglyceride-rich VLDL, are associated with similar lower risk of major vascular events.

    “Indeed, recent genetic data highlight that lower levels of apoB-containing particles, be it cholesterol-rich LDL or triglyceride-rich VLDL, are associated with similar lower risk of major vascular events.35”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [35] Ference BA, Kastelein JJP, Ray KK, Ginsberg HN, Chapman MJ, Packard CJ, Laufs U, Oliver-Williams C, Wood AM, Butterworth AS, Association of Triglyceride-Lowering LPL Variants and LDL-C-Lowering LDLR Variants With Risk of Coronary Heart Disease. JAMA. 2019; 321: 364– 373. 30694319 PMC6439767 source

      The Discussion reports similar lower coronary heart disease (CHD) risk per unit lower ApoB for triglyceride-lowering and LDL-C-lowering genetic variants, and describes triglyceride-rich VLDL remnants and LDL as ApoB-containing particles. But the Study Outcomes section defines the measured outcome as CHD, not the broader category of major vascular events. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Premisecitation

    Recent data from the CANTOS trial showed that a 1.6-1.7 mg/dL reduction in hs-CRP was associated with a 17% reduction in major vascular events.

    “Recent data from the CANTOS trial showed that a 1.6-1.7 mg/dL reduction in hs-CRP was associated with a 17% reduction in major vascular events.50”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [50] Ridker PM, Everett BM, Thuren T, MacFadyen JG, Chang WH, Ballantyne C, Fonseca F, Nicolau J, Koenig W, Anker SD, Antiinflammatory Therapy with Canakinumab for Atherosclerotic Disease. N Engl J Med. 2017; 377: 1119– 1131. 28845751 source

      The Results report a 17% lower risk for the key secondary cardiovascular end point with 150-mg canakinumab versus placebo (hazard ratio 0.83). They also report a greater reduction in hs-CRP, but express it as 37 percentage points, not a 1.6–1.7 mg/dL reduction. The paper does not establish the claimed association between that specific hs-CRP reduction and the event reduction. (LLM, conf=0.90)

      Experimental — accuracy not yet measured
  • Findingown data

    In omega-3 fatty acid trials, the RR (95% CI) per 1 mmol/L reduction in non-HDL-C for major vascular events was 0.51 (0.40-0.64).

    “Examining individual classes, the RR (95%CI) per 1 mmol/L reduction in non-HDL-C was 0.80 (0.77-0.82) (0.79 per 40 mg/dl) for statins, 0.79 (0.71-0.88) (0.78 per 40 mg/dl) for fibrates, 0.84 (0.75-0.95) (0.83 per 40 mg/dl) for niacin, and 0.51 (0.40-0.64) (0.50 per 40 mg/dl) for omega-3 fatty acid trials (Supplemental Figure 2).”
    Quote in the paperSubstantial claim
  • May combine two claims. 29
  • Classified as probably not a substantial claim. 15
  • The quote only partly states this claim. 1
  • May combine two claims.

    Interpretationown data

    Triglyceride-lowering is associated with about half the CV risk reduction per mmol/L and therefore closer to 1⁄4 the benefit per mg/dL compared with LDL-C lowering.

    “We demonstrate that triglyceride-lowering is associated with about half the CV risk reduction per mmol/L and therefore closer to ¼ the benefit per mg/dL (1 mmol/L = 38.67 mg/dl of LDL-C and 88.57 mg/dL of TG), a ratio congruent with our Mendelian randomization study data.35”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [35] Ference BA, Kastelein JJP, Ray KK, Ginsberg HN, Chapman MJ, Packard CJ, Laufs U, Oliver-Williams C, Wood AM, Butterworth AS, Association of Triglyceride-Lowering LPL Variants and LDL-C-Lowering LDLR Variants With Risk of Coronary Heart Disease. JAMA. 2019; 321: 364– 373. 30694319 PMC6439767 source
  • Classified as probably not a substantial claim.

    Premisecitation

    Lower triglyceride levels, when accompanied by lower apolipoprotein B levels, are associated with lower cardiovascular risk.

    “However, genetic studies suggest that lower triglyceride levels, when accompanied by lower apolipoprotein B levels, are associated with lower CV risk”
    Quote in the paperSubstantial claim3 of 3 sources checked
    • cites [6] Do R, Willer CJ, Schmidt EM, Sengupta S, Gao C, Peloso GM, Gustafsson S, Kanoni S, Ganna A, Chen J, Common variants associated with plasma triglycerides and risk for coronary artery disease. Nat Genet. 2013; 45: 1345– 1352. 24097064 PMC3904346 source

      The paper reports that variants associated with lower triglycerides and lower LDL cholesterol tend to be associated with lower coronary artery disease risk (results passage, page unavailable). It does not report the claimed condition of lower apolipoprotein B levels; LDL cholesterol is not the same measurement. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
    • cites [8] Willer CJ, Schmidt EM, Sengupta S, Peloso GM, Gustafsson S, Kanoni S, Ganna A, Chen J, Buchkovich ML, Mora S, Discovery and refinement of loci associated with lipid levels. Nat Genet. 2013; 45: 1274– 1283. 24097068 PMC3838666 source

      The Results section (‘Association of individual lipids with coronary artery disease’; page not provided) reports that triglyceride-related genetic effects correlate with CAD risk, supporting the lower-triglyceride portion of the claim. It does not establish that the association depends on accompanying lower apolipoprotein B levels; the paper’s APOB mention concerns a protein-interaction network, not measured apolipoprotein B levels. (LLM, conf=0.88)

      Experimental — accuracy not yet measured
    • cites [35] Ference BA, Kastelein JJP, Ray KK, Ginsberg HN, Chapman MJ, Packard CJ, Laufs U, Oliver-Williams C, Wood AM, Butterworth AS, Association of Triglyceride-Lowering LPL Variants and LDL-C-Lowering LDLR Variants With Risk of Coronary Heart Disease. JAMA. 2019; 321: 364– 373. 30694319 PMC6439767 source
  • Classified as probably not a substantial claim. May combine two claims.

    Premisecitation

    Triglycerides per se may not be atherogenic, but rather may be a marker for the concentration of atherogenic very low density lipoprotein (VLDL) particles.

    “Moreover, triglycerides per se may not be atherogenic, but rather may be a marker for the concentration of atherogenic very low density lipoprotein (VLDL) particles.35”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [35] Ference BA, Kastelein JJP, Ray KK, Ginsberg HN, Chapman MJ, Packard CJ, Laufs U, Oliver-Williams C, Wood AM, Butterworth AS, Association of Triglyceride-Lowering LPL Variants and LDL-C-Lowering LDLR Variants With Risk of Coronary Heart Disease. JAMA. 2019; 321: 364– 373. 30694319 PMC6439767 source
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Proposed non-lipid lowering mechanisms for icosapent ethyl include anti-inflammatory, anti-arrhythmic, and anti-platelet properties.

    “Proposed non-lipid lowering mechanisms for icosapent ethyl include anti-inflammatory, anti-arrhythmic, and anti-platelet properties.49”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [49] Preston Mason R New Insights into Mechanisms of Action for Omega-3 Fatty Acids in Atherothrombotic Cardiovascular Disease. Curr Atheroscler Rep. 2019; 21: 2. 30637567 PMC6330561 source

      The paper identifies icosapent ethyl as a purified EPA preparation. In “Omega-3 Fatty Acids and Atherothrombotic Disease” (page unavailable), it reports reduced inflammatory markers with prescription EPA; Table 2 in “Distinct Roles of EPA and DHA in Cellular Function and Atherosclerosis” (page unavailable) lists reduced platelet activation. It does not propose an anti-arrhythmic mechanism: its REDUCE-IT discussion instead reports a higher rate of hospitalization for atrial fibrillation or flutter with EPA. (LLM, conf=0.87)

      Experimental — accuracy not yet measured
  • May combine two claims.

    Premisecitation

    The authors' recent Mendelian randomization study suggests that the number of atherogenic apoB-containing lipoproteins is the true determinant of cardiovascular risk, not the cholesterol or triglyceride content per se.

    “Nonetheless, it is important to note that our recent Mendelian randomization study35 would suggest that it is simply the number of atherogenic apoB-containing lipoproteins that is the true determinant of cardiovascular risk and not the cholesterol or triglyceride content per se, which are surrogate biomarkers.”
    Quote in the paperNot a substantial claim1 of 1 sources checked
    • cites [35] Ference BA, Kastelein JJP, Ray KK, Ginsberg HN, Chapman MJ, Packard CJ, Laufs U, Oliver-Williams C, Wood AM, Butterworth AS, Association of Triglyceride-Lowering LPL Variants and LDL-C-Lowering LDLR Variants With Risk of Coronary Heart Disease. JAMA. 2019; 321: 364– 373. 30694319 PMC6439767 source
  • May combine two claims. The quote only partly states this claim.

    Findingown data

    The 24 non-statin trials included 197,270 patients with an average age of 63 years and a mean baseline triglyceride level of 163 mg/dL (median 151, IQR 143-165 mg/dL).

    “These trials included a total of 197,270 patients with an average age of 63 years old and a mean baseline triglyceride level of 163 mg/dL (median 151, IQR 143-165 mg/dL).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Three non-statin trials were outliers and significantly deviated from the regression line: VA-HIT (p=0.02), JELIS (p=0.0495), and REDUCE-IT (p=0.0002).

    “Three non-statin trials were outliers and significantly deviated from the regression line: a fibrate trial, VA-HIT (p=0.02), and two omega-3 fatty acid trials, JELIS (p=0.0495) and REDUCE-IT (p=0.0002).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The average median trial follow-up was 4.8 years, during which there were 25,218 major cardiovascular events.

    “The average median trial follow-up was 4.8 years during which there were 25,218 major CV events (Table).”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Findingown data

    A total of 24 triglyceride-lowering trials were included in the meta-regression analyses.

    “Of these, 24 triglyceride lowering trials were included in the meta-regression analyses.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Based on the observed meta-regression relationship and actual non-HDL-C lowering in non-statin trials, the power to detect a significant clinical benefit was ≤20% in 14 trials, 21-50% in two trials, 51-79% in two trials, and ≥80% in only one trial.

    “Based on the observed meta-regression relationship between non-HDL-C lowering and reduction in major vascular events and the actual non-HDL-C lowering in non-statin trials, the power to detect a significant clinical benefit given the number of events in each of the non-statin trials was quite limited, being ≤20% in 14 trials, 21-50% in two trials, 51-79% in two trials and ≥80% in only one trial (S”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The RR for omega-3 fatty acid trials differed significantly from the RRs seen in fibrate (p=0.008), niacin (p=0.004), and statin (p=0.005) trials.

    “In contrast, the RR for omega-3 fatty acid trials differed significantly from the RRs seen in fibrate (p=0.008), niacin (p=0.004), and statin (p=0.005) trials.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    REDUCE-IT was a significant outlier and strongly influential trial in the meta-regression.

    “REDUCE-IT was a significant outlier and strongly influential trial in the meta-regression.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    REDUCE-IT was a significant outlier (P=0.007) and had strong influence on the meta-regression (D=2.27).

    “Once again, REDUCE-IT was a significant outlier (P=0.007) and had strong influence on the meta-regression (D = 2.27, if D >1.39 relatively influential) (Supplement Figure 5).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    Models with terms for intercept showed that the intercept terms were close to the origin and not significant.

    “As a check, models with terms for intercept were also created, and showed that the intercept terms were close to the origin and not significant.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The 4 grams/day EPA dose in REDUCE-IT gave the trial high leverage but was not influential on the regression line (D=0.27).

    “The significantly higher dose of 4 grams/day of EPA in REDUCE-IT gave the trial high leverage, but was not influential on the regression line (D = 0.27, if D >0.45 relatively influential).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    The included trials comprised nine fibrate trials, three niacin trials, and 13 omega-3 fatty acid trials, with one trial having both fibrate and niacin experimental arms.

    “There were nine fibrate trials (Supplemental Table 2), three niacin trials (Supplemental Table 3) and 13 omega-3 fatty acids trials (Supplemental Table 4) (one trial had both fibrate and niacin experimental arms).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingreasoning

    JELIS and DOIT were the only other two trials to test >1 gram/day of EPA and both had CV risk reduction beyond what was expected based on non-HDL-C lowering.

    “JELIS and DOIT were the only other two trials to test >1 gram/day of EPA and both had CV risk reduction beyond what was expected based on non-HDL-C lowering, supporting the potential pleiotropic benefits of higher-dose EPA.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Publication bias was assessed by funnel plots and Egger's regression test.

    “Publication bias was also assessed by funnel plots and Egger’s regression test.48”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [48] Egger M, Davey Smith G, Schneider M, Minder C. Bias in meta-analysis detected by a simple, graphical test. BMJ. 1997; 315: 629– 634. 9310563 PMC2127453 source
  • May combine two claims.

    Premisecitation

    Most fibrate trials, both statin-era niacin trials, and all but two omega-3 trials have failed to show a statistically significant reduction in major vascular events.

    “Most of the fibrate trials, both of the statin-era niacin trials, and all but two of the omega-3 trials have failed to show a statistically significant reduction in major vascular events.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites 11-34

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

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

    Study design and conductcitation

    All results are reported in accordance with Preferred Reporting Items for Systematic reviews and Meta-Analysis guidelines.

    “All results are reported in accordance with Preferred Reporting Items for Systematic reviews and Meta-Analysis guidelines.41”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [41] Moher D, Liberati A, Tetzlaff J, Altman DG, Group P. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. Ann Intern Med. 2009; 151: 264– 269, W264. 19622511 source
  • May combine two claims.

    Interpretationreasoning

    Developing drugs that achieve large reductions in VLDL and triglycerides and/or targeting patients with high baseline levels of VLDL or triglycerides would likely increase the probability of showing a meaningful clinical benefit.

    “Specifically, developing drugs that achieve large reductions in VLDL and triglycerides and/or targeting patients with high baseline levels of VLDL or triglycerides would likely increase the probability of showing a meaningful clinical benefit.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    In randomized controlled trials, triglyceride lowering is associated with lower risk of major vascular events, even after adjusting for LDL-C lowering, although the effect is attenuated when REDUCE-IT is excluded.

    “In randomized controlled trials, triglyceride lowering is associated with lower risk of major vascular events, even after adjusting for LDL-C lowering, although the effect is attenuated when REDUCE-IT is excluded.”
    Quote in the paperSubstantial claim
    • The authors state this as an assumption: As the dose of a drug goes to zero, the lipid effect goes to zero and the treatment effect goes to zero (the origin).
    • Rests on an assumption: Non-HDL-C is a surrogate for VLDL and LDL, and LDL-C and triglyceride are surrogates for LDL and VLDL.
  • May combine two claims.

    Interpretationreasoning

    A decrease in 40 mg/dl of LDL-C should translate into approximately 20% lower CV risk, but a similar 40 mg/dL reduction in triglycerides is associated with only around 4-5% lower CV risk.

    “Specifically, a decrease in 40 mg/dl of LDL-C should translate into an approximately 20% lower CV risk, but a similar 40 mg/dL reduction in triglycerides is associated with only around 4-5% lower CV risk.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationnone given

    REDUCE-IT may have been an outlier because of the type of omega-3 fatty acid and/or the dose that was used.

    “Fifth, REDUCE-IT may have been an outlier because of the type of omega-3 fatty acid and/or the dose that was used.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data

    Triglyceride lowering is associated with lower risk of cardiovascular events, but to a lesser extent per absolute amount of reduction than with LDL-C.

    “Second, triglyceride lowering (a surrogate of triglyceride-rich VLDL) is associated with lower risk of cardiovascular events, but to a lesser extent per absolute amount of reduction than with LDL-C (a surrogate for cholesterol-rich LDL).”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    Each trial was reviewed independently by 2 authors, and disagreements were resolved by consensus.

    “Each trial was reviewed independently by 2 of the authors (N.A.M. and M.S.S.).”
    • Also stated in: § Methods · plain
      “All disagreements were discussed and resolved by consensus.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data

    REDUCE-IT was the most significant outlier and influencer of the meta-regression, and removing it attenuated the effect estimate for triglyceride lowering with an upper bound of the 95% CIs that just crosses 1.0.

    “Fourth, REDUCE-IT was the most significant outlier and influencer of the meta-regression, and removing it attenuated the effect estimate for triglyceride lowering with an upper bound of the 95% CIs that just crosses 1.0.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Study design and conductown data

    Sensitivity analyses including terms for duration of follow up and proportion of background statin use showed no significant interactions (p=0.53 and p=0.55).

    “Sensitivity analyses including terms for duration of follow up and proportion of background statin use (in trials of non-statin therapy) were performed but showed no significant interactions (p values for interaction of 0.53 and 0.55, respectively).”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductcitation

    Risk-of-bias assessments were performed for each trial using the Cochrane Collaboration tool.

    “Risk-of-bias assessments were performed for each trial using the Cochrane’s Collaboration tool.53”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [53]

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

  • May combine two claims.

    Study design and conductown data

    No significant bias was detected across trials, although JELIS was the only trial with an open-label design.

    “No significant bias was detected across trials although it was notable that JELIS was the only trial with an open-label design.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    In patients with very high triglyceride levels (>400 mg/dl), triglyceride lowering would be expected to associate with the largest clinical benefit.

    “It should also be noted that very few of these trials included a substantial proportion of patients with very high triglyceride levels (ie, >400 mg/dl), a group in whom triglyceride lowering would be expected to associate with the largest clinical benefit.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    It is possible the magnitude of clinical benefit observed in REDUCE-IT could reflect a combination of both lower triglycerides and lower hs-CRP in the EPA arm vs. the comparator arm of mineral oil, but even those two factors together seem insufficient.

    “Thus, it is possible the magnitude of clinical benefit observed in REDUCE-IT could reflect a combination of both lower triglycerides and lower hs-CRP in the EPA arm vs. the comparator arm of mineral oil, but even those two factors together seem insufficient.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductreasoning

    The meta-analysis was not performed on patient-level data.

    “The meta-analysis was not performed on patient-level data.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    In randomized controlled trials, triglyceride lowering is associated with lower risk of major vascular events, even after adjusting for LDL-C lowering, but that relationship was attenuated when REDUCE-IT is excluded.

    “In randomized controlled trials, triglyceride lowering is associated with lower risk of major vascular events, even after adjusting for LDL-C lowering, but that relationship was attenuated when REDUCE-IT is excluded.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductown data

    There was visual evidence of publication bias (less small negative trials than expected) but this was not statistically significant.

    “There was visual evidence of publication bias (less small negative trials than expected) but this was not statistically significant.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Study design and conductnone given

    Few omega-3 trials used high doses, giving REDUCE-IT greater influence on the meta-regression line.

    “Finally, few omega-3 trials used high doses, giving REDUCE-IT greater influence on the meta-regression line.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductnone given

    All lipid measurements were not available in every trial and almost no trials had data on apoB.

    “All lipid measurements were not available in every trial and almost no trials had data on apoB.”
    Quote in the paperSubstantial claim
37 of 37
  • The authors state this as an assumption.

    As the dose of a drug goes to zero, the lipid effect goes to zero and the treatment effect goes to zero (the origin).

    “In each analysis the intercept was set at 0 to reflect the clinical assumption that as the dose of a drug goes to zero, the lipid effect goes to zero and the treatment effect goes to zero (ie, the origin).”
  • The paper relies on this without support.

    Non-HDL-C is a surrogate for VLDL and LDL, and LDL-C and triglyceride are surrogates for LDL and VLDL.

    “Starting with non-HDL-C, a surrogate for VLDL and LDL”
    “In a multivariable meta-regression model that included terms for both LDL-C and triglyceride (surrogates for LDL and VLDL)”
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?

  • Older people gain significant benefits from lipid lowering for primary prevention, and these benefits are even more impactful in people with diabetes.

    “Increasing evidence now shows that older persons gain significant benefits from lipid lowering for primary prevention, and these benefits are even more impactful in persons with DM.”

    From American Association of Clinical Endocrinology Clinical Practice Guideline: Developing a Diabetes Mellitus Comprehensive Care Plan-2022 Update. (2022) · cites this paper as [361]

    The Conclusions (page unavailable) associate triglyceride lowering with fewer major vascular events in randomized trials, supporting a general cardiovascular benefit. The Results give an average participant age of 63, but the paper does not establish a significant primary-prevention benefit specifically for older people or show that benefits are greater in people with diabetes. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • Neither linear assumption-driven meta-regressions nor stratified dose analyses have conclusively estimated the dose-response relationship between ω3 PUFA intake and relative risk reduction, raising the possibility of a nonlinear dose-response curve.

    “Neither linear assumption‐driven meta‐regressions 38 , 39 , 40 , 41 , 42 nor stratified dose analyses 42 , 43 have conclusively estimated the dose–response relationship between ω3 PUFA intake and relative risk reduction, raising the possibility of a nonlinear dose–response curve. 30”

    From Association Between Omega-3 Fatty Acid Intake and Dyslipidemia: A Continuous Dose-Response Meta-Analysis of Randomized Controlled Trials (2023) · cites this paper as [38]

    Split into 2 atoms — 0 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 1 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • Hypertriglyceridemia is common and is associated with an increased risk of atherosclerosis.

    “H ypertriglyceridemia is common and is associated with an increased risk of atherosclerosis, 1-4”

    From Targeting <i>APOC3</i> with Olezarsen in Moderate Hypertriglyceridemia (2025) · cites this paper as [1]

    The Background states that triglyceride levels are associated with cardiovascular risk, supporting the risk portion of the claim. It does not establish that hypertriglyceridemia is common, and it cautions that triglycerides themselves may not be atherogenic, instead marking atherogenic VLDL particles (Background; page unavailable). (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The association between triglyceride-lowering and omega-3 PUFA intake could causally lead to reduction of cardiovascular risks in patients with high triglyceride.

    “The association between triglyceride‐lowering and ω3 PUFA intake could causally lead to the reduction of cardiovascular risks in patients with high triglyceride, as previously reported in trials 18 , 19 and meta‐analyses. 38”

    From Association Between Omega-3 Fatty Acid Intake and Dyslipidemia: A Continuous Dose-Response Meta-Analysis of Randomized Controlled Trials (2023) · cites this paper as [38]

    The Discussion > Conclusions (page unavailable) reports that triglyceride lowering is associated with fewer major vascular events and that marine-derived omega-3 fatty acids, particularly high-dose EPA, appear to have benefits beyond lipid lowering. It also says the association weakens when REDUCE-IT is excluded. The source does not establish that triglyceride lowering through omega-3 intake causally reduces cardiovascular risk specifically in patients with high triglycerides. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The mechanisms for end point prevention appear to be attributed to the pleiotropic effects in addition to serum lipid regulation.

    “The mechanisms for end point prevention appear to be attributed to the pleiotropic effects in addition to serum lipid regulation. 38 , 148”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • DHA trials include a zero-DHA dose

    Minor

    The reported range for the 11 trials with DHA starts at 0 mg. A trial receiving 0 mg of DHA cannot be one of the trials with DHA.

1 of 1

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Marston, N. A., Giugliano, R. P., Im, K., Silverman, M. G., O’Donoghue, M. L., Wiviott, S. D., Ference, B. A., & Sabatine, M. S.
Affiliations
  • Brigham and Women's Hospital (US)
  • Harvard University (US)
  • University of Cambridge (GB)
Venue
Circulation
Published
2019-10-15
Volume
140
Issue
16
Pages
1308-1317
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2973983647
Cited by
301
References
55
Citations by year
2026: 19 · 2025: 58 · 2024: 51 · 2023: 45 · 2022: 42 · 2021: 51 · 2020: 32 · 2019: 3
FWCI
30.54
Type
journal article
Language
en
Open access
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Heart, Lung, and Blood Institute (L30 HL143770, K08HL153950, F32HL144029)
Topics
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
triglyceride lowering, cardiovascular risk reduction, lipid-lowering therapy, fibrates, nicotinic acid, omega-3 fatty acids, non-HDL cholesterol, LDL cholesterol, major vascular events, REDUCE-IT trial, icosapent ethyl, statins, surrogate endpoints, meta-regression, cardiovascular disease prevention, hypertriglyceridemia, VLDL
MeSH terms
Cardiovascular Diseases, Humans, Cholesterol, LDL, Niacin, Risk, Triglycerides, Fatty Acids, Omega-3, Randomized Controlled Trials as Topic, Hydroxymethylglutaryl-CoA Reductase Inhibitors

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-19.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-19.

Cited sources are checked by gpt-6-sol.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review