Effect of Cyclosporin A in a Patient with Refractory Nephrotic Syndrome Associated with B Chronic Lymphocytic Leukemia

Abstract
We report on a patient with an almost 20-year history of B chronic lymphocytic leukemia (B-CLL). During the last 2 years, the patient developed nephrotic syndrome (NS) due to membranous glomerulonephritis (MN), refractory to standard therapeutic regimens. Neither NS nor B-CLL responded objectively to systemic administration of two different combinations of corticosteroids and alkylating agents (chlorambucil, cyclophosphamide). Third-line therapy with cyclosporin A resulted in reduction of proteinuria and improvement of leukemia. Withdrawal of the drug led to an increase in leukocyte count.

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