ESR1 and juvenile polyposis syndrome: In study 2, the AUCs of CRP (1.0, p < 0.001) and ESR-1h (0.83, p < 0.05) in the ROC curve were able to discriminate PJI, but those of presepsin (0.51, p = 0.96) and WBC (0.65, p = 0.28) failed to discriminate PJI.