GAS5 and neoplasm: The LncRNA growth arrest‐specific transcript 5 (GAS5), a tumour suppressor gene, was significantly down‐regulated in NSCLC tissues and cell lines, and elevated expression of GAS5 inhibited cell proliferation and induced apoptosis in NSCLC cells.46 Dong et al demonstrated that down‐expression of GAS5 obviously induced NSCLC migration and invasion.