Li et al. (25) reported that the expression of miR-9-5p in the lung tissues of NSCLC patients was significantly higher than that in the adjacent normal lung tissues, and miR-9-5p accelerated the metastasis, invasion and proliferation of lung cancer cells by targeting transforming growth factor beta receptor 2 (TGFBR2). Here, TGFBR2 is linked to lung carcinoma.