title: Genetic variants influencing circulating lipid levels and risk of coronary artery disease.
abstract: OBJECTIVE
  Genetic studies might provide new insights into the biological mechanisms underlying lipid metabolism and risk of CAD. We therefore conducted a genome-wide association study to identify novel genetic determinants of low-density lipoprotein cholesterol (LDL-C), high-density lipoprotein cholesterol (HDL-C), and triglycerides.
  
  
  RESULTS
  We combined genome-wide association data from 8 studies, comprising up to 17 723 participants with information on circulating lipid concentrations. We did independent replication studies in up to 37 774 participants from 8 populations and also in a population of Indian Asian descent. We also assessed the association between single-nucleotide polymorphisms (SNPs) at lipid loci and risk of CAD in up to 9 633 cases and 38 684 controls. We identified 4 novel genetic loci that showed reproducible associations with lipids (probability values, 1.6×10(-8) to 3.1×10(-10)). These include a potentially functional SNP in the SLC39A8 gene for HDL-C, an SNP near the MYLIP/GMPR and PPP1R3B genes for LDL-C, and at the AFF1 gene for triglycerides. SNPs showing strong statistical association with 1 or more lipid traits at the CELSR2, APOB, APOE-C1-C4-C2 cluster, LPL, ZNF259-APOA5-A4-C3-A1 cluster and TRIB1 loci were also associated with CAD risk (probability values, 1.1×10(-3) to 1.2×10(-9)).
  
  
  CONCLUSIONS
  We have identified 4 novel loci associated with circulating lipids. We also show that in addition to those that are largely associated with LDL-C, genetic loci mainly associated with circulating triglycerides and HDL-C are also associated with risk of CAD. These findings potentially provide new insights into the biological mechanisms underlying lipid metabolism and CAD risk.
authors.affiliation: Genetics Division, GlaxoSmithKline R&D, King of Prussia, PA, USA.
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mesh_terms: D044466:Asian People; D008076:Cholesterol, HDL / Q000097:blood / Q000235:genetics*; D008078:Cholesterol, LDL / Q000097:blood / Q000235:genetics*; D003324:Coronary Artery Disease / Q000235:genetics*; D014644:Genetic Variation; D055106:Genome-Wide Association Study; D006801:Humans; D050356:Lipid Metabolism / Q000235:genetics*; D020641:Polymorphism, Single Nucleotide; D012307:Risk Factors; D014280:Triglycerides / Q000097:blood / Q000235:genetics*; D044465:White People
chemical_list: D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D014280:Triglycerides