Non-high-density lipoprotein cholesterol, guideline targets, and population percentiles for secondary prevention in 1.3 million adults: The VLDL-2 study (very large database of lipids)

Mohamed B. Elshazly, Seth S. Martin, Michael J. Blaha, Parag H. Joshi, Peter P. Toth, John W. McEvoy, Mohammed A. Al-Hijji, Krishnaji R. Kulkarni, Peter O. Kwiterovich, Roger S. Blumenthal, Steven R. Jones

Research output: Contribution to journalArticle

43 Scopus citations

Abstract

Objectives This study sought to examine patient-level discordance between population percentiles of non-high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C). Background Non-HDL-C is an alternative to LDL-C for risk stratification and lipid-lowering therapy. The justification for the present guideline-based non-HDL-C cutpoints of 30 mg/dl higher than the LDL-C cutpoints remains largely untested. Methods We assigned population percentiles to non-HDL-C and Friedewald-estimated LDL-C values of 1,310,440 U.S. adults with triglyceride levels <400 mg/dl who underwent lipid testing by vertical spin density gradient ultracentrifugation (Atherotech, Birmingham, Alabama) from 2009 to 2011. Results LDL-C cutpoints of 70, 100, 130, 160, and 190 mg/dl were in the same population percentiles as non-HDL-C values of 93, 125, 157, 190, and 223 mg/dl, respectively. Non-HDL-C values reclassified a significant proportion of patients within or to a higher treatment category compared with Friedewald LDL-C values, especially at LDL-C levels in the treatment range of high-risk patients and at triglyceride levels ≥150 mg/dl. Of patients with LDL-C levels <70 mg/dl, 15% had a non-HDL-C level ≥100 mg/dl (guideline-based cutpoint) and 25% had a non-HDL-C level ≥93 mg/dl (percentile-based cutpoint); if triglyceride levels were 150 to 199 mg/dl concurrently, these values were 22% and 50%, respectively. Conclusions There is significant patient-level discordance between non-HDL-C and LDL-C percentiles at lower LDL-C and higher triglyceride levels, which has implications for the treatment of high-risk patients. Current non-HDL-C cutpoints for high-risk patients may need to be lowered to match percentiles of LDL-C cutpoints. Relatively small absolute reductions in non-HDL-C cutpoints result in substantial reclassification of patients to higher treatment categories with potential implications for risk assessment and treatment. (The Very Large Database of Lipids [VLDL-2]; NCT01698489).

Original languageEnglish (US)
Pages (from-to)1960-1965
Number of pages6
JournalJournal of the American College of Cardiology
Volume62
Issue number21
DOIs
StatePublished - Nov 19 2013

Keywords

  • LDL cholesterol
  • discordance
  • lipids
  • non-HDL cholesterol
  • percentiles
  • secondary prevention

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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    Elshazly, M. B., Martin, S. S., Blaha, M. J., Joshi, P. H., Toth, P. P., McEvoy, J. W., Al-Hijji, M. A., Kulkarni, K. R., Kwiterovich, P. O., Blumenthal, R. S., & Jones, S. R. (2013). Non-high-density lipoprotein cholesterol, guideline targets, and population percentiles for secondary prevention in 1.3 million adults: The VLDL-2 study (very large database of lipids). Journal of the American College of Cardiology, 62(21), 1960-1965. https://doi.org/10.1016/j.jacc.2013.07.045