LINC00857 and neoplasm: LINC00857 level was detected in clinical LUAD tissue and matched para‐cancerous tissue, as well as cell lines (BEAS‐2B, A549, H1299, PC‐9, H838, and NCI‐H23), through qRT‐PCR, and we uncovered that LINC00857 level in LUAD tumor tissue was markedly higher than in corresponding para‐cancerous tissue (Figure 1B).