HOXA11 and non-small cell lung carcinoma: To assess the biological role of lncRNA HOXA11-AS in NSCLC cells, we down-regulated the expression of lncRNA HOXA11-AS in A549 cells and H1299 cells and determined the si-HOXA11-AS-2 had a better knockdown efficiency for lncRNA HOXA11-AS and were used in the following experiments (Fig. 1d).