SNHG18 and glioma: As can be seen from the figure, AGAP2-AS1, CYTOR, MIR155HG, MIR4435-2HG, HOTAIRM1, SNHG18, LINC01841, LINC01842, LINC01426, TMEM220-AS1, LINC01270, and LINC01503, LINC01273 were high-risk lncRNAs, which were significantly upregulated in glioma and positively correlated to the progression of glioma (Figure 1(b)).