For example, lncRNA GAS5 can function as a ceRNA for miR-21 [39]; long non-coding RNA H19 promotes glioma cell invasion by deriving miR-675 [40]; Long non-coding RNA MEG3 functions as a competing endogenous RNA of miR-181 s to regulate gastric cancer progression [41]. The gene discussed is MEG3; the disease is central nervous system cancer.