The levels of GMF-β expression were found to be positively correlated with MVD in tumor cells (r = 0.367, P < 0.001; Figure 1B, right panel), as well as in endothelial cells (r = 0.557, P < 0.0001; Figure 1C, right panel) in all grades of glioma. This evidence concerns the gene GMFB and central nervous system cancer.