Furthermore, a positive correlation between MRE11 and CXCR4 expression and a negative correlation between both MRE11/FOXA2 expression and CXCR4/FOXA2 expression were observed from heat map view and scatter/correlation plot using oral cancer microarray datasets from ONCOMINE Cancer Profiling Database (https://www.oncomine.org) (Fig. S5D). Here, CXCR4 is linked to cancer.