A meta-analysis has summarized the existing biomarkers for predicting SA-AKI, among which C-C motif chemokine ligand 14 (CCL14) and tissue inhibitor of metalloproteinase-2 and insulin-like growth factor-binding protein-7 (TIMP-2 and IGFBP-7) are currently the biomarkers with better predictive performance. This evidence concerns the gene TIMP2 and acute kidney injury.