FOXA2 and breast cancer: To further analyze the effect of FOXP2 on the survival of breast cancer patients and test whether its effect relied on the levels of FOXA2, we built two FOXA2-related subgroups of clinical samples, in which the FOXA2High subgroup (n=131) or the FOXA2Low subgroup (n=131) contained either the top 1/3 or the bottom 1/3 of the collected BRCA data set (n=394) respectively according to the levels of FOXA2 expression.