TUG1 and non-small cell lung carcinoma: TUG1 regulates the expression of growth control genes by binding to polycomb repressive complex 2 (PRC2); the TUG1/PRC2 complex could also bind with hoxb7 promoter and epigenetically activate its expression, thereby activating the Akt and mitogen-activated protein kinase (MAPK) pathways in NSCLC 112, 121.