Because tumor cell proliferation and invasion are stochastically mutually exclusive events—actively proliferating cells tend to be stationary, while rapidly migrating tumor cells divide more slowly, namely, the “Go-or-Grow” hypothesis (50), we also discovered activated regulons suppressing glioma cell invasion and migration (e.g., FOXP1) (Figure 3B). This evidence concerns the gene FOXP1 and central nervous system cancer.