CD44 and coronary artery disorder: We found that CD44 levels in patients with STEMI is significantly lower than healthy controls and patients with S-CAD [143.7 ng/ml (126.2–162.8) vs. 172.1 ng/ml (156.4–197.4) p < 0.001; 143.7 ng/ml (126.2–162.8) vs. 178.7 ng/ml (160.1–191.3) p < 0.001, respectively] (Figure 5).