In the GEPIA and Oncomine database, TP53 (Figure S1D, Figure S2), RB1 (Figure S1E, Figure S2), CCND1 (Figure S1F, Figure S2), and CDK4 (Figure S1G, Figure S2) showed a higher expression level in tumor samples than normal samples in LGG. Here, TP53 is linked to neoplasm.