CCL2 and breast cancer: In stage I of BC the highest AUC of all the tested parameters was presented by CCL2 (0.6604) and it was the parameter which was significantly larger in comparison to AUC= 0.5 (p=0.0097), correspondingly to CCR2 (p=0.0074) and CA 15-3 (p=0.0266) (Figure 2).