HCG15 and central nervous system cancer: HCG15, AC007950.2, PTPRN2-AS1, LEF1-AS1, AC021739.2, ARHGAP42-AS1, and LINC01571 were found to be highly expressed in glioma tissues, while TRHDE-AS1 and AC008915.2 were highly expressed in normal cells (Supplementary Figure S8).