Among 205 NSCLC tissues, VE-cadherin was positively expressed in 101 specimens (49.27%, 101/205), while MMP2 and MMP9 were found positively expressed in 67 cases (32.68%, 67/205) and 80 samples (39.02%, 80/205), respectively. The gene discussed is MMP9; the disease is non-small cell lung carcinoma.