The AUROCs of urinary L-FABP for predicting the onset of AKI within 48 h after cardiac surgery immediately after the operation and 3, 6, 18, 24, and 48 h postoperatively were 0.86, 0.85, 0.83, 0.76, 0.78, and 0.75, respectively [26]. This evidence concerns the gene FABP1 and acute kidney injury.