As depicted in Figure 4(e), BDNF expression was positively correlated with tumor-associated genes, including Akt1, Akt2, Akt3, mTOR, mitogen-activated protein kinase (MAPK) 8, MAPK9, MAPK10, ACTRT3, CDA, BCL2, and MCL1. This evidence concerns the gene MAPK9 and neoplasm.