New early biomarkers of AKI have recently been suggested, including Lipocalin-2 (LCN2, known as Neutrophil Gelatinase-associated Lipocalin - NGAL) [13], Tissue Inhibitor of Metalloproteinase-2 (TIMP-2), and Insulin-like Growth Factor-Binding Protein 7 (IGFBP7) [14, 15]. The gene discussed is TIMP2; the disease is acute kidney injury.