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Nephrotic syndrome after stem cell transplantation
William S Stevenson1, Brian J Nankivell, Mark S Hertzberg
1Department of Haematology, University of Sydney, Westmead Hospital, Sydney, Australia.
Clinical Transplantation
|January 22, 2005
Summary
Nephrotic syndrome is a rare complication after allogeneic stem cell transplantation (SCT). Early diagnosis and immunosuppressive therapy are crucial for managing this condition post-SCT.
Area of Science:
- Nephrology
- Hematology
- Oncology
Background:
- Bone marrow transplantation, specifically allogeneic stem cell transplantation (SCT), is a life-saving procedure for myeloid malignancies.
- Nephrotic syndrome, a kidney disorder characterized by heavy protein loss, is an uncommon but serious complication post-SCT.
Observation:
- Three patients with myeloid malignancy developed nephrotic syndrome months after allogeneic SCT.
- Renal biopsies revealed membranous glomerulonephritis in two patients and minimal change glomerulonephritis in one.
- Proteinuria was severe and distinct from graft-versus-host disease in two cases.
Findings:
- All patients initially responded to immunosuppressive therapy (prednisolone and cyclosporine).
- Two patients with high-risk leukemia experienced fatal relapses of their malignancy.
- One patient achieved disease-free remission with minimal proteinuria after discontinuing immunosuppression.
Implications:
- De novo nephrotic syndrome post-allogeneic SCT warrants renal biopsy for histological confirmation.
- Prompt immunosuppressive therapy should be considered after excluding other causes of nephrotic syndrome.
- Close monitoring for malignancy relapse is essential in patients treated for post-SCT nephrotic syndrome.