Lipoprotein(a) and the Risk for Coronary Heart Disease and Ischemic Stroke Events Among Black and White Adults With Cardiovascular Disease

Lisandro D. Colantonio, Vera Bittner, Monika M. Safford, Santica Marcovina, Todd M. Brown, Elizabeth A. Jackson, Mei Li, J. Antonio G. López, Keri L. Monda, Timothy B. Plante, Shia T. Kent, Paul Muntner, Robert S. Rosenson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

BACKGROUND: It is unclear whether lipoprotein(a) is associated with coronary heart disease (CHD) and ischemic stroke events in White and Black adults with atherosclerotic cardiovascular disease (ASCVD). METHODS AND RESULTS: We conducted a case-cohort analysis, including Black and White REGARDS (Reasons for Geographic and Racial Differences in Stroke) study participants ≥45 years of age with prevalent ASCVD (ie, CHD or stroke) at baseline between 2003 and 2007. Baseline lipoprotein(a) molar concentration was measured in participants with ASCVD who ex-perienced a CHD event by December 2017 (n=1166) or an ischemic stroke by September 2019 (n=492) and in a random subcohort of participants with prevalent ASCVD (n=1948). The hazard ratio (HR) for CHD events per 1 SD (1.5 units) higher log-transformed lipoprotein(a) was 1.26 (95% CI, 1.02–1.56) among Black participants and 1.16 (95% CI, 1.02–1.31) among White participants (P value comparing HRs, 0.485). The HR for CHD events per 1 SD higher log-lipoprotein(a) within subgroups with hs-CRP (high-sensitivity C-reactive protein) ≥2 and <2 mg/L was 1.31 (95% CI, 0.99–1.73) and 1.23 (95% CI, 0.85–1.80), respectively (P value comparing HRs, 0.836), among Black participants, and 1.07 (95% CI, 0.91–1.27) and 1.36 (95% CI, 1.10– 1.70), respectively (P value comparing HRs, 0.088), among White participants. There was no evidence that the association between lipoprotein(a) and CHD events differed by statin use. There was no evidence of an association between lipoprotein(a) and ischemic stroke events among Black or White participants. CONCLUSIONS: Higher lipoprotein(a) levels were associated with an increased risk for CHD events in Black and White adults with ASCVD.

Original languageEnglish
Article numbere025397
JournalJournal of the American Heart Association
Volume11
Issue number11
DOIs
StatePublished - 7 Jun 2022

Keywords

  • adults
  • coronary heart disease
  • lipoprotein(a)
  • secondary prevention
  • stroke

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