Another protein, the monocyte chemoattractant protein (MCP)-1 (mostly known as C–C Motif Chemokine Ligand 2, CCL2), was also found in high concentrations in the serum of obese individuals [107] and was overexpressed in patients with triple-negative breast cancer, leading to cancer progression and metastasis [114]. The gene discussed is CCL2; the disease is cancer.