SOX9 and non-small cell lung carcinoma: In this study, the expression level of lncRNA DLEU2, miR-30c-5p, and SOX9 in NSCLC tissues and cell lines, and the targeted relationship among lncRNA DLEU2, miR-30c-5p and SOX9 were determined, which could regulate the malignant biological behavior of NSCLC cells in vitro.