TERT, CDKN2A, PLK1, FASLG, TNFRSF21, TNF, ZBP1, LEF1, HSPA4, and IDH2 were highly expressed in most tumor tissues, while TARDBP, KLF9, BACH2, CFLAR, TSC1, FLT3, and AXL were expressed at low levels in most cancers (Figure 2C). The gene discussed is KLF9; the disease is cancer.