CXCL8 and breast cancer: However, we found significant correlations between CXCL1 and CXCL8 in the BC—total group (r = 0.5103 p < 0.001), both BC luminal subgroups—luminal A (r = 0.5701 p < 0.001) and luminal B (r = 0.4489, p = 0.001) and in the group of subjects with benign lesion (r = 0.5311, p < 0.001) (Figure 5).