PF4 and breast cancer: As summarized in Supplementary Tables S3 and S4, CCL5 (P = 0.008), CCL8 (P = 0.000), CCL14 (P = 0.042), CCL20 (P = 0.016), CCL27 (P = 0.041), CXCL4 (PF4) (P = 0.017), and CXCL14 (P = 0.004) were remarkably correlated with the clinical outcomes of BC patients.