In addition, CYP2E1 was positively correlated with tumor size (Figure 1G, r = 0.4204, p = 0.0185) and tumor proliferation index (Figure 1H, r = 0.4582, p = 0.0095), indicating that CYP2E1 in TME is related to the higher malignancy of glioma. The gene discussed is CYP2E1; the disease is central nervous system cancer.