
Trial treatment.

aGVHD
From day 60 after transplantation, patients without GvHD or acute GvHD (aGVHD) ≤grade 2 were scheduled to receive DB as an 8-hour infusion of 20 mg/mOverview: Screening phase and trial treatment. Response assessment: Immunosuppressive medication had to be stopped before DB treatment. Chemotherapy, experimental anticancer medication, and radiotherapy were not allowed during immunotherapy.The study Protocol was approved by the appropriate authorities and institutional review boards. All legal guardians and/or patients provided written informed consent before screening. This trial was registered with ClinicalTrials.gov (identifier: 