Serious infections within 90 days following systemic treatment of acute GVHD.P values express the difference between the itacitinib (Ita) and systemic corticosteroid (SCS) groups. The Gray test was used to compare cumulative incidences, and the Fisher exact test was used to compare categories of serious infections. (A) Cumulative incidence. (B) Categories of serious infections. Any patient with a fungal infection is included in fungal ± other. One control patient included in the viral + bacterial category also had a parasitic infection.