Moreover, PBMC gene expression of MMP-9 and MMP-9 levels was significantly higher in CAD than in control (1.11 ± 0.17 vs. 1 ± 0.14 and 1097.86 ± 364.76 ng/ml vs. 761.70 ± 230.25 ng/ml; all P = 0.01, respectively) (Figure 3A & 3B). Here, MMP9 is linked to coronary artery disorder.