At the end of OLT (day 0), urinary NGAL concentrations increased to 18 ng/ml, IQR 1.6–56 in the no/mild AKI group (P<0.001) and to 20 ng/ml, IQR 3.2–62 in the severe AKI group (P = 0.009). This evidence concerns the gene LCN2 and acute kidney injury.