Particularly, compared with a low expression level, a high expression level of LCN2 was correlated with a worse OS in BLCA (HR = 1.6, P = 0.0024, Figure 2A), KIRC (HR = 1.4, P = 0.015, Figure 2B) and GBM (HR = 1.6, P = 0.009, Figure 2C), and DFS in GBM (HR = 1.6, P = 0.0035, Figure 2D). This evidence concerns the gene LCN2 and glioblastoma.