CASP9 and central nervous system cancer: Among them, 15 genes (IL1A, GSDMA, TP53, NLRP6, GSDMC, IL1B, NLRC4, IL18, CASP5, CASP3, IRF2, BAK1, PYCARD, CHMP2B, and NOD2) were upregulated, while 19 other genes (CASP6, CHMP7, ELANE, BAX, CHMP2A, CASP9, GPX4, CYCS, CASP8, PRKACA, TP63, IRF1, PLCG1, CHMP3, GSDMD, CHMP4C, NOD1, CASP4, and IL6) were downregulated in the glioma group.