MMP9 and cervical squamous intraepithelial neoplasia: In CIN group, MMP-9 levels were upregulated compared to CIN+NAC; CIN+VAR; and CIN+AVA groups, reaching statistical significance (95% CI: 113.36, 481.13 p < 0.001; 95%CI: 43.97, 411.73 p = 0.01; 95% CI: 174.63, 542.39 p < 0.001, respectively) (Figure 5).