Several studies have explored various predictors of AKI, including kidney injury molecule-1 (KIM-1) (8), liver lipase-binding protein (L-FABP) (8, 9), NGAL (10, 11), tissue inhibitor of metalloproteinase-2 (TIMP-2) and insulin-like growth factor binding protein 7 (IGFBP7) (12–14), etc. The gene discussed is LCN2; the disease is acute kidney injury.