CCL2 and type 2 diabetes mellitus: The established risk biomarkers include CCL2, matrix metallopeptidases (MMPs), tyrosine kinase, podocin, connective tissue growth factor, tumor necrosis factor (TNF)-receptor-1, sclerostin, YKL-40, and NT-proCNP, which improve the explanations and prediction of eGFR decline in type 2 diabetes [21].