FCGR1A and systemic inflammatory response syndrome: (36) found that HLA-DR at 2 hours postoperative and 6 hours postoperative was a good predictor of SIRS after ureteroscopy holmium laser lithotripsy compared with the traditional inflammatory index PCT, but was less effective than CD64, which had significant areas of 0.993 and 0.983 for the 2-hour and 6-hour ROC curves, respectively.