TUG1 and nasopharyngeal carcinoma: Previous studies have shown that some lncRNAs, such as TUG1, UCA1, and AFAP1-AS1, regulated the expression of miR-145 by a sponging mechanism in glioma stem cells (GSCs) [41], nasopharyngeal carcinoma (NPC) cell lines [42], and OSCC cell lines [43], respectively.