The Relationship between and Polymorphisms and Target Lesion Revascularization after Elective Percutaneous Coronary Intervention.

BACKGROUND AND AIM

The specific association between genetic variation and in-stent restenosis is still only partly understood. The aim of this study is to analyze the relationship between functional polymorphisms in the genes encoding vascular endothelial growth factor A (VEGF-A; rs699947) and transforming growth factor beta 1 (TGF-1; rs1800470) and target lesion revascularization (TLR) risk.

METHODS

A total of 676 patients (805 lesions) with stable coronary artery disease (SCAD) who received elective percutaneous coronary intervention (PCI) with at least one bare-metal stent implantation were included. The primary study endpoint was TLR at a 4-year follow-up.

RESULTS

The TLR rate was higher in patients with the A/A genotype (15.4%) than in patients with the A/C (7.9%) and C/C (8.9%) genotypes ( = 0.009). The A/A genotype, after adjustment for clinical and procedural covariates, remained significantly and independently associated with the TLR (hazard ratio-2.09 [95% confidence interval 1.32-3.33, = 0.0017]). However, we found no association between TLR and the genotype.

CONCLUSION

The A/A genotype is significantly and independently associated with TLR risk in Polish SCAD patients who received elective PCI with bare-metal stent implantation.