Notably, a recent study demonstrated that high plasma Fib level may be used as a predictor of critical coronary artery stenosis in very young patients with MI, while their study was limited by extremely small sample size (only 76 patients) as well as rough assessment of coronary severity by the numbers of coronary arteries defined as 50% obstruction in coronary vessels [14]. This evidence concerns the gene FBL and myocardial infarction.