CXCL9, BAFF, and sC5b-9 are higher in patients with graft rejection compared with febrile HCT controls. CXCL9, BAFF, and sC5b-9 levels at the time of fever are shown. Fever samples were obtained at the closest available time point to when fevers rose above 102.2°F (39°C) or at the closest time point to Tmax if less than 102.2°F. The median value with 95% confidence interval is marked (A-E). ROC curves are shown for each marker at time of fever (F).