Treatment of Multiple Myeloma With Daratumumab in a Kidney Transplant Patient

2019 
CLINICAL FEATURES A middle-aged man with history of kidney transplantation was diagnosed with multiple myeloma (MM); he was treated with cyclophosphamide, bortezomib, and dexamethasone (CyBorD) for induction therapy. However, a repeat bone marrow biopsy after treatment revealed 10% clonal plasma cell involvement. Given residual disease, his treatment regimen was changed to daratumumab, bortezomib, and dexamethasone in an attempt to achieve minimal residual disease. THERAPEUTIC CHALLENGE Daratumumab was recently approved for treatment of relapsed or refractory MM; there are no data regarding the safety and effectiveness in solid organ transplant patients. SOLUTION Our patient was treated with a daratumumab-based regimen for MM. His renal function was monitored closely along with donor-specific antibody to assess for risk of graft rejection. His renal function remained stable with minimal proteinuria and negative donor-specific antibody during the treatment course.
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