Response outcomes. (A) Duration of response (time from first response until GVHD progression or death) in day 28 responders and other responders (patients who responded at any time during treatment). The data cutoff was 2 July 2018. (B) Subgroup analysis of day 28 ORR. Acute GVHD response was assessed using standardized objective criteria per MAGIC guidelines. *After primary treatment with methylprednisolone ≥2 mg/kg per day. †In another organ in patients who previously received corticosteroids (≥1 mg/kg per day methylprednisolone) for skin or skin plus upper GI GVHD.