Expression of microRNA-137, and the DFS and OS rates of patients with NSCLC. (A) microRNA-137 expression. (B) DFS and (C) OS rates of patients with NSCLC. ##P<0.01, compared with the cisplatin-treated NSCLC patient tissue group. Cisplatin-NSCLC, cisplatin-treated NSCLC patient tissue; Normal, adjacent healthy tissue. NSCLC, non-small cell lung cancer; DFS, disease-free survival; OS, overall survival.