RHEB and central nervous system cancer: The intersection of these two gene sets identified 13 ubiquitination-related glioma-associated prognostic genes (UR-GAPGs): LDHA, TUBB6, ALDOA, RHEB, MT2A, CST3, CDK5RAP2, VKORC1, NNAT, CAMK2N1, PLAUR, CPE, and STC1 (Figure 7A).