Other studies showed that homozygosity of Glu298Asp and 786T/C polymorphisms of the NOS3 gene represented an independent risk factor for in-stent restenosis, and the 894G/T polymorphism of NOS3 gene was associated with an increased risk of death and/or myocardial infarction within 1 year after stent placement [24, 44, 45]. This evidence concerns the gene NOS3 and myocardial infarction.