Changes in bone mineral density after allogenic stem cell transplantation

Area of Science:

• Hematology
• Bone Metabolism
• Transplantation Medicine

Background:

• Osteoporosis is a known complication following allogeneic stem cell transplantation (alloSCT).
• Understanding bone mineral density (BMD) changes and their predictors is crucial for patient management post-transplant.

Purpose of the Study:

• To evaluate BMD changes at 6 months and 3 years after alloSCT.
• To identify predictors of bone loss in patients undergoing alloSCT.

Main Methods:

• A prospective, longitudinal study at a single center involving 258 patients (excluding myeloma).
• Assessments included clinical, biological, radiological, and DXA densitometry at baseline, 6 months, and 3 years.
• Statistical analysis to determine BMD changes and associated factors.

Main Results:

• Osteoporosis was prevalent, particularly at the femoral neck. BMD significantly decreased from baseline to 6 months at lumbar spine, femoral neck, and total hip.
• BMD increased at the lumbar spine between 6 months and 3 years, but not at other sites.
• Bone loss was associated with corticosteroid intake, active hematological disease, and bone marrow stem cell factors.

Conclusions:

• Patients undergoing alloSCT exhibit bone fragility, with persistent low BMD at the hip 3 years post-transplant.
• Bone loss is multifactorial, influenced by treatment and disease status, highlighting the need for targeted interventions.