Biomarkers such as neutrophil gelatinase associated lipocalin (NGAL) [10, 11] and cell cycle arrest markers tissue inhibitor of metalloproteinase-2 (TIMP-2) and insulin-like growth factor binding protein 7 (IGFBP-7) [12] have been studied for AKI stratification and prediction. The gene discussed is IGFBP7; the disease is acute kidney injury.