Polymorphisms at LDLR locus may be associated with coronary artery disease through modulation of coagulation factor VIII activity and independently from lipid profile

Blood. 2010 Dec 16;116(25):5688-97. doi: 10.1182/blood-2010-03-277079. Epub 2010 Sep 1.

Abstract

High levels of coagulation factor VIII (FVIII) have been associated with cardiovascular disease. Low-density lipoprotein receptor (LDLR) has been recently demonstrated to contribute to FVIII clearance from plasma. The aim of this study was to evaluate 3 single nucleotide polymorphisms in SMARCA4-LDLR gene locus (rs1122608, rs2228671, and rs688) and FVIII coagulant activity (FVIII:c) in subjects with (n = 692) or without (n = 291) angiographically confirmed coronary artery disease (CAD). High FVIII:c levels were an independent risk factor for CAD. The rs688 and rs2228671 genotypes were predictors of FVIII:c with T alleles associated with higher FVIII:c levels. The rs2228671T allele was associated also with reduced total and LDL-cholesterol levels. With respect to the risk of CAD, no association was found for rs2228671. Consistently with higher FVIII:c levels, the rs688T allele was associated with CAD, whereas, consistently with a favorable lipid profile, the rs1122608T allele was associated with a decreased CAD prevalence. After adjustment for classic cardiovascular risk factors, including plasma lipids, rs688 remained associated with CAD (OR for T carriers: 1.67 with 95% confidence interval, 1.10-2.54). Haplotype analysis confirmed such results. Our data suggest that polymorphisms at LDLR locus modulate FVIII:c levels and may be associated with CAD risk independently from plasma lipids.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Coronary Artery Disease / genetics*
  • Coronary Artery Disease / metabolism
  • Coronary Artery Disease / pathology
  • DNA Helicases / genetics*
  • Factor VIII / genetics
  • Factor VIII / metabolism*
  • Female
  • Genotype
  • Haplotypes / genetics
  • Humans
  • Lipids / analysis*
  • Lipids / blood
  • Male
  • Middle Aged
  • Nuclear Proteins / genetics*
  • Polymorphism, Single Nucleotide / genetics*
  • Prognosis
  • Receptors, LDL / genetics*
  • Risk Factors
  • Transcription Factors / genetics*

Substances

  • Lipids
  • Nuclear Proteins
  • Receptors, LDL
  • Transcription Factors
  • Factor VIII
  • SMARCA4 protein, human
  • DNA Helicases