MPGN type I induced by granulocyte colony stimulating factor
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We report a girl with severe congenital neutropenia who has received long-term granulocyte-colony stimulating factor (G-CSF) therapy and has developed macroscopic hematuria, proteinuria, and decreased renal function associated with biopsy-proven membranoproliferative glomerulonephritis (MPGN) type I. Temporary discontinuation of G-CSF therapy as well as the use of glycosylated G-CSF has resulted in improvement in renal manifestations. We postulate that the MPGN was G-CSF- induced. Long-term G-CSF therapy should be used with great caution and close surveillance of kidney function.
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