Our previous study demonstrated that ADAM9 promotes lung cancer metastasis by enhancing the function of CDCP1 [3] and regulates the expression of several genes through dysregulation of miRNAs, such as activation of N-cadherin (CDH2; cadherin 2) and CDCP1 through miR-218 [14, 15]. The gene discussed is CDCP1; the disease is lung cancer.