As shown in Figure 6(A) and (B), the area under the curve (AUC) of eGFR and TGF-β1 in predicting renal fibrosis were 0.783 (95% confidence interval [CI], 0.719–0.848) and 0.742 (95% CI, 0.671–0.814) respectively, whereas, the AUC of urinary GAS5 was 0.868 (95% CI, 0.805–0.930) (Figure 6(C)). Here, TGFB1 is linked to renal fibrosis.