CXCL8 and breast cancer: Several scientific papers have also reported increased serum CXCL8 (p = 0.047 [66]; p < 0.001 [67]; p < 0.001 [68]) or plasma levels (p < 0.001 [52]; p = 0.005 [35]) in patients with early (p = 0.002) and advanced stages (p = 0.001) of breast cancer [69] compared with healthy women.