Stabilization of hepatitis C associated collapsing focal segmental glomerulosclerosis with interferon alpha-2a and ribavirin.

Hepatitis C virus (HCV) infection is associated with a variety of glomerular diseases, most notably cryoglobulin associated membranoproliferative glomerulonephritis Type I. Focal segmental glomerulosclerosis has only rarely been reported in association with HCV. More striking are multiple reports of de novo collapsing focal segmental glomerulosclerosis (cFSGS) developing during administration of interferon for treatment of HCV. Herein is presented a case of HCV associated cFSGS stabilized with combination therapy of interferon α-2a and ribavirin in a patient with advanced kidney disease.