A common variant in low-density lipoprotein receptor-related protein 6 gene (LRP6) is associated with LDL-cholesterol

Maciej Tomaszewski, Fadi J Charchar, Timothy Barnes, Magdalena Gawron-Kiszka, Agnieszka Sedkowska, Ewa Podolecka, Jacek Kowalczyk, Wendy Rathbone, Zbigniew Kalarus, Wladyslaw Grzeszczak, Alison H Goodall, Nilesh J Samani, Ewa Zukowska-Szczechowska

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVE: A rare mutation in low-density lipoprotein receptor-related protein 6 gene (LRP6) was identified as the primary molecular defect underlying monogenic form of coronary artery disease. We hypothesized that common variants in LRP6 could predispose subjects to elevated LDL-cholesterol (LDL-C).

METHODS AND RESULTS: Twelve common (minor allele frequency > or =0.1) single nucleotide polymorphisms in LRP6 were genotyped in 703 individuals from 213 Polish pedigrees (Silesian Cardiovascular Study families). The family-based analysis revealed that the minor allele of rs10845493 clustered with elevated LDL-C in offspring more frequently than expected by chance (P=0.0053). The quantitative analysis restricted to subjects free of lipid-lowering treatment confirmed the association between rs10845493 and age-, sex-, and BMI-adjusted circulating levels of LDL-C in families as well as 2 additional populations - 218 unrelated subjects from Silesian Cardiovascular Study replication panel and 1138 individuals from Young Men Cardiovascular Association cohort (P=0.0268, P=0.0476, and P=0.0472, respectively). In the inverse variance weighted meta-analysis of the 3 populations each extra minor allele copy of rs10845493 was associated with 0.14 mmol/L increase in age-, sex-, and BMI-adjusted LDL-C (SE=0.05, P=0.0038).

CONCLUSIONS: Common polymorphism in the gene underlying monogenic form of coronary artery disease impacts on risk of LDL-C elevation.

Original languageEnglish
Pages (from-to)1316-21
Number of pages6
JournalArteriosclerosis, Thrombosis, and Vascular Biology
Volume29
Issue number9
DOIs
Publication statusPublished - Sept 2009

Keywords

  • Adult
  • Cholesterol, LDL/blood
  • Coronary Artery Disease/blood
  • Dyslipidemias/blood
  • Female
  • Gene Frequency
  • Genetic Predisposition to Disease
  • Humans
  • LDL-Receptor Related Proteins/blood
  • Lipid Metabolism/genetics
  • Low Density Lipoprotein Receptor-Related Protein-6
  • Male
  • Middle Aged
  • Monocytes/metabolism
  • Pedigree
  • Phenotype
  • Poland
  • Polymorphism, Single Nucleotide
  • RNA, Messenger/blood
  • Up-Regulation
  • Young Adult

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