Study of Pharmacokinetics, Activity and Safety of Ruxolitinib in Pediatric Patients With Grade II-IV Acute Graft vs. Host Disease

The study was an open-label, single-arm, Phase I/II multi-center study to investigate the PK, activity and safety of ruxolitinib added to the patient's immunosuppressive regimen in infants, children, and adolescents ages ≥28 days to \<18 years old with either grade II-IV aGvHD or grade II-IV SR-aGvHD. The trial design included four age groups: Group 1 included patients ≥12y to \<18y, Group 2 included patients ≥6y to \<12y, Group 3 included patients ≥2y to \<6y, and Group 4 included patients ≥28days to \<2y.