After CM exposure, the lnc-HILPDA and lnc-PRND expression levels in blood of PC-AKI patients were significantly higher than those in the controls (mean difference in lncRNA fold changes: lnc-HILPDA, 4.490 [3.135-5.845], P<0.0001; lnc-PRND, 4.334 [2.769-5.899], P<0.0001; Figure 2D). Here, PRND is linked to acute kidney injury.