Pediatric GVHD Low Risk Steroid Taper Trial

Pediatric patients with Minnesota standard risk GVHD that is also Ann Arbor 1 by biomarkers will begin treatment at 0.5 mg/kg/d prednisone (or other steroid equivalent). Patients with favorable clinical responses and biomarker scores at weeks 1 and 2 will have their steroid doses tapered quickly on a weekly basis for four weeks. Patients whose GVHD does not respond or have unfavorable biomarker scores will have their steroid doses increased and be removed from study treatment. The primary endpoint is the proportion of patients whose cumulative steroid dose for the first four weeks is less than half of standard dosing.