In a study by Dutta et al. [46], the levels of CCL2 mRNA expression and CCL2 protein production were examined in HCC1937, HCC1395, HCC70, and HCC1806 (categorized as triple-negative [TN] BC/basal-type cells) and BT-549 and MDA-MB-231 (categorized as TNBC/mesenchymal-like cells) cells. This evidence concerns the gene CCL2 and breast cancer.