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Are AHSG polymorphisms directly associated with coronary atherosclerosis?
Axel Muendlein1, Nicole Stark, Philipp Rein
1Vorarlberg Institute for Vascular Investigation and Treatment (VIVIT), Feldkirch, Austria.
Clinica Chimica Acta; International Journal of Clinical Chemistry
|October 26, 2011
Summary
This study found no significant association between specific AHSG gene variants and coronary artery disease (CAD) in patients undergoing angiography. The investigated AHSG single nucleotide polymorphisms (SNPs) did not correlate with the presence or severity of coronary atherosclerosis.
Area of Science:
- Cardiovascular genetics
- Molecular epidemiology
- Atherosclerosis research
Background:
- Fetuin-A (AHSG) is a potential cardiovascular risk factor.
- Previous studies linked AHSG levels and SNPs to intima media thickness and vascular events.
- The association between AHSG variants and angiographically determined coronary artery disease (CAD) remained unexplored.
Purpose of the Study:
- To investigate the association between AHSG single nucleotide polymorphisms (SNPs) and angiographically characterized coronary atherosclerosis.
- To determine if specific AHSG variants are linked to the presence or severity of CAD.
Main Methods:
- Genotyped four AHSG variants (rs4917, rs2248690, rs2518136, rs2077119) in 1,649 patients.
- Utilized a cross-sectional design with coronary angiography.
- Defined significant CAD as coronary stenoses ≥50%.
Main Results:
- One variant (rs2077119) was excluded due to Hardy-Weinberg equilibrium deviation.
- No statistically significant association was found between the remaining AHSG variants and CAD under additive, recessive, or dominant inheritance models.
- Haplotypes and individual SNPs showed no significant correlation with the extent or severity of coronary lesions.
Conclusions:
- The study data do not support a direct association between AHSG variants (rs4917, rs2248690, rs2518136) and coronary atherosclerosis.
- These findings suggest that these specific AHSG genetic variants may not be direct contributors to CAD as assessed by angiography.
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