To further test whether the expression levels of FoxM1 were related to migration ability of CRC cells, we measured the effects of FoxM1 expression levels on cancer cell migration by transwell systems between SW480 and SW620 cells; we found that the numbers of migratory SW620 cells were more dramatically higher than those of SW480 cells (Figure 2C, P < 0.001). This evidence concerns the gene FOXM1 and cancer.