To evaluate the regulatory functions of ZEB1 in other types of breast cancer cells and cancer tissues, we obtained expression microarray data from the Cancer Cell Line Encyclopedia (CCLE; Barretina et al., 2012) and analyzed the relationship of the expression of ZEB1 with that of inflammatory cytokines, that is, IL6 and IL8, in breast cancer cells. This evidence concerns the gene CXCL8 and breast carcinoma.