Genetic Variants on Chromosome 1p13.3 Are Associated with Non-ST Elevation Myocardial Infarction and the Expression of DRAM2 in the Finnish Population

PLoS One. 2015 Oct 28;10(10):e0140576. doi: 10.1371/journal.pone.0140576. eCollection 2015.

Abstract

Myocardial infarction (MI) is divided into either ST elevation MI (STEMI) or non-ST elevation MI (NSTEMI), differing in a number of clinical characteristics. We sought to identify genetic variants conferring risk to NSTEMI or STEMI by conducting a genome-wide association study (GWAS) of MI stratified into NSTEMI and STEMI in a consecutive sample of 1,579 acute MI cases with 1,576 controls. Subsequently, we followed the results in an independent population-based sample of 562 cases and 566 controls, a partially independent prospective cohort (N = 16,627 with 163 incident NSTEMI cases), and examined the effect of disease-associated variants on gene expression in 513 healthy participants. Genetic variants on chromosome 1p13.3 near the damage-regulated autophagy modulator 2 gene DRAM2 associated with NSTEMI (rs656843; odds ratio 1.57, P = 3.11 × 10(-10)) in the case-control analysis with a consistent but not statistically significant effect in the prospective cohort (rs656843; hazard ratio 1.13, P = 0.43). These variants were not associated with STEMI (rs656843; odds ratio, 1.11, P = 0.20; hazard ratio 0.97, P = 0.87), appearing to have a pronounced effect on NSTEMI risk. A majority of the variants at 1p13.3 associated with NSTEMI were also associated with the expression level of DRAM2 in blood leukocytes of healthy controls (top-ranked variant rs325927, P = 1.50 × 10(-12)). The results suggest that genetic factors may in part influence whether coronary artery disease results in NSTEMI rather than STEMI.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Chromosomes, Human, Pair 1 / genetics*
  • Female
  • Finland
  • Gene Expression Regulation
  • Genetic Association Studies*
  • Genetic Loci
  • Genetic Predisposition to Disease*
  • Genetic Variation*
  • Genome-Wide Association Study
  • Humans
  • Linkage Disequilibrium / genetics
  • Male
  • Membrane Proteins / genetics*
  • Membrane Proteins / metabolism
  • Middle Aged
  • Myocardial Infarction / genetics*
  • Phenotype
  • Polymorphism, Single Nucleotide / genetics
  • Reproducibility of Results
  • Risk Factors

Substances

  • DRAM2 protein, human
  • Membrane Proteins

Grants and funding

This work was supported by grants from Aarne Koskelo Foundation, Helsinki University Central Hospital, Tampere University Hospital special government funds (EVO), the Finnish Foundation for Cardiovascular research, the Academy of Finland, and the Finnish Funding Agency for Technology and Innovation. PPS was supported by the Integrative Life Science Doctoral Program of the University of Helsinki. PJK has been supported by the Medical Research Fund of Tampere University Hospital, Pirkanmaa Regional Fund of the Finnish Cultural Foundation and the Finnish Foundation for Cardiovascular Research. HH is supported by the Sigrid Juselius Foundation. VS is supported by the Academy of Finland [grant #139635] and the Finnish Foundation for Cardiovascular Diseases. MSN is partly financially supported for this work by the Finnish Academy [grant #129388]. MP (Markus Perola) is partly financially supported for this work by the EU FP7 under grant agreements nr. 313010 (BBMRI-LPC), nr. 305280 (MIMOmics), and nr. 261433 (BioSHaRE-EU), the Finnish Academy grant no. 269517, the Yrjö Jahnsson Foundation, and the Juho Vainio Foundation. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.