CXCL12 and breast cancer: However, CXCL1 (PR (> F) = 0.00622), CXCL2 (PR (> F) = 0.00232), CXCL12 (PR (> F) = 0.00892), CXCL13 (PR (> F) = 0.0131) were significantly correlated with the pathological stages of BC.