IGFBP2 and NRAS mRNAs were positively correlated based on our dataset (r-value = 0.46, p-value = 0.00027) (Figure 5B), and GBM TCGA and normal brain cortex GTEx gene expression data (r-value = 0.76, p-value = 4.5 × 10−52) (Figure S8). This evidence concerns the gene IGFBP2 and glioblastoma.