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Impact of Lipoprotein(a) Level on Low-Density Lipoprotein Cholesterol- or Apolipoprotein B-Related Risk of Coronary Heart Disease

  • Natalie Arnold
  • , Christopher Blaum
  • , Alina Goßling
  • , Fabian J Brunner
  • , Benjamin Bay
  • , Tanja Zeller
  • , Marco M Ferrario
  • , Paolo Brambilla
  • , Giancarlo Cesana
  • , Valerio Leoni
  • , Luigi Palmieri
  • , Chiara Donfrancesco
  • , Francisco Ojeda
  • , Allan Linneberg
  • , Stefan Söderberg
  • , Licia Iacoviello
  • , Francesco Gianfagna
  • , Simona Costanzo
  • , Susana Sans
  • , Giovanni Veronesi
  • Barbara Thorand, Annette Peters, Hugh Tunstall-Pedoe, Frank Kee, Veikko Salomaa, Renate B Schnabel, Kari Kuulasmaa, Stefan Blankenberg, Christoph Waldeyer, Wolfgang Koenig, BiomarCaRE Investigators
23 Citationer (Scopus)

Abstract

BACKGROUND: Conventional low-density lipoprotein cholesterol (LDL-C) quantification includes cholesterol attributable to lipoprotein(a) (Lp(a)-C) due to their overlapping densities.

OBJECTIVES: The purposes of this study were to compare the association between LDL-C and LDL-C corrected for Lp(a)-C (LDLLp(a)corr) with incident coronary heart disease (CHD) in the general population and to investigate whether concomitant Lp(a) values influence the association of LDL-C or apolipoprotein B (apoB) with coronary events.

METHODS: Among 68,748 CHD-free subjects at baseline LDLLp(a)corr was calculated as "LDL-C-Lp(a)-C," where Lp(a)-C was 30% or 17.3% of total Lp(a) mass. Fine and Gray competing risk-adjusted models were applied for the association between the outcome incident CHD and: 1) LDL-C and LDLLp(a)corr in the total sample; and 2) LDL-C and apoB after stratification by Lp(a) mass (≥/<90th percentile).

RESULTS: Similar risk estimates for incident CHD were found for LDL-C and LDL-CLp(a)corr30 or LDL-CLp(a)corr17.3 (subdistribution HR with 95% CI) were 2.73 (95% CI: 2.34-3.20) vs 2.51 (95% CI: 2.15-2.93) vs 2.64 (95% CI: 2.26-3.10), respectively (top vs bottom fifth; fully adjusted models). Categorization by Lp(a) mass resulted in higher subdistribution HRs for uncorrected LDL-C and incident CHD at Lp(a) ≥90th percentile (4.38 [95% CI: 2.08-9.22]) vs 2.60 [95% CI: 2.21-3.07]) at Lp(a) <90th percentile (top vs bottom fifth; Pinteraction0.39). In contrast, apoB risk estimates were lower in subjects with higher Lp(a) mass (2.43 [95% CI: 1.34-4.40]) than in Lp(a) <90th percentile (3.34 [95% CI: 2.78-4.01]) (Pinteraction0.49).

CONCLUSIONS: Correction of LDL-C for its Lp(a)-C content provided no meaningful information on CHD-risk estimation at the population level. Simple categorization of Lp(a) mass (≥/<90th percentile) influenced the association between LDL-C or apoB with future CHD mostly at higher Lp(a) levels.

OriginalsprogEngelsk
TidsskriftJournal of the American College of Cardiology
Vol/bind84
Udgave nummer2
Sider (fra-til)165-177
Antal sider13
ISSN0735-1097
DOI
StatusUdgivet - 9 jul. 2024

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