That is, the high expression of CDKN2C was mainly observed in head and neck cancers (GBM and HNSCC), lung cancers (SCLC, LUAD, and LUSC), and digestive system cancers outside the colorectum (CHOL, ESCA, LIHC, and STAD). The gene discussed is CDKN2C; the disease is glioblastoma.