To confirm if the Saa3 promoter-luc mouse model can be used to detect acute tubulointerstitial injury and predict tubulointerstitial fibrosis, we applied unilateral ureteral obstruction (UUO), that is an acute and well-established model of tubulointerstitial injury/fibrosis, in this study5. Here, SAA3P is linked to Ureteral obstruction.