In recent years, a number of molecular biomarkers for AKI have been discovered, including kidney injury molecule-1 (KIM-1), neutrophil gelatinase-associated lipocalin (NGAL), interleukin-18 (IL-18), liver fatty acid-binding protein (L-FABP), tissue inhibitor of metalloproteinase 2 (TIMP2), insulin-like growth factor binding protein 7 (IGFBP7) and cystatin C, to just name a few 13-16. This evidence concerns the gene TIMP2 and acute kidney injury.