DLX5 and neoplasm: We performed an immunohistochemical assay to detect the expression levels of DLX5 and the proliferation marker Ki-67 in tumor tissues (Fig. 8D, F); we found that si-LncRNA-RP11-197K6.1 reduced the expression of DLX5 and Ki-67, while the miR-135a-5p inhibitor suppressed the changes induced by si-LncRNA-RP11-197K6.1.