Disorder Related to Bone Marrow Transplantation Clinical Trial
Official title:
Phase 1 Trial of Denosumab for Prevention of Bone Complications After Allogenic Hematopoietic Stem Cell Transplantation in Children
Children treated by bone marrow transplantation (BMT) experience bone toxicity. Those bone damages are caused by both a decrease of bone formation and an increase of bone destruction after BMT.For long term survivors, bone complications are major determinants of impaired quality of life. No standard treatment currently exists to prevent those bone injuries. Denosumab is a treatment which specifically blocks bone destruction for 4 to 6 months in adults. This trial will study whether it is safe to prescribe Denosumab to children after BMT in the aim of preventing bone complications.
Participant will receive one subcutaneous dose of Denosumab within 2 weeks after confirmation of bone marrow engraftment. The dose of treatment will be escalated between participants. Denosumab is supposed to be effective for several months (4 to 6 months). The biologic activity of Denosumab will be followed by the measure in the blood of a biomarker of bone destruction called CTX. This biomarker is supposed to decrease after Denosumab infusion, reflecting the blockade of bone destruction by the treatment. Bone density will be assessed by a radiologic test named DXA which a standard test. All blood and radiologic tests mandated by the study will be done at the same time as standard follow-up after bone marrow transplant. Thus, participants will not have extra visits at the outpatient clinic, or extra blood punctures, for the specific purpose of the study. Participants will be followed for 36 months after bone marrow transplantation.For experiencing graft versus host disease, a second dose of Denosumab will be allowed, followed by subsequent doses evry 4 to 6 months till a maximum of 4 doses within 24months after bone marrow transplantation. ;
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