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[Treatment of HCV-associated cryoglobulinemic glomerulonephritis]
S Laurino1, S Borrelli, F Catapano
1Cattedra di Nefrologia, Seconda Universita' degli Studi, Napoli, Italy.
Insights
Hepatitis C-related kidney disease treatment varies by severity. Mild cases use antivirals, while severe cases may require immunosuppressants and antivirals, with rituximab as an alternative.
Area of Science:
- Nephrology
- Hepatology
- Immunology
Context:
- Hepatitis C virus (HCV) infection is a leading cause of secondary glomerulonephritis.
- HCV-related membranoproliferative glomerulonephritis (MPGN) is the most common renal manifestation of HCV.
- Current treatment strategies for HCV-associated renal disease lack robust evidence.
Purpose:
- To review current treatment approaches for HCV-related MPGN.
- To highlight the challenges in managing this condition.
- To identify the need for further research and clinical trials.
Summary:
- Treatment for HCV-related MPGN is stratified by disease severity.
- Mild to moderate cases are treated with 48 weeks of pegylated interferon alpha and ribavirin plus supportive care.
- Severe cases may involve sequential immunosuppressive therapy (plasmapheresis, corticosteroids, cyclophosphamide) and antivirals, or B-cell depletion with rituximab for refractory cases.
Impact:
- Establishes current therapeutic options for HCV-related glomerulonephritis.
- Underscores the critical need for large randomized controlled trials.
- Aims to guide future clinical practice and establish definitive treatment guidelines.
Abstract:
HCV-related membranoproliferative glomerulonephritis is the most common cause of hepatitis C-associated renal disease. Its treatment is still under debate and based on scant experimental evidence. The recommended therapeutic strategy depends on the severity of the kidney disease. The first-line treatment for patients with mild to moderate clinical and histological kidney damage is antiviral therapy with pegylated interferon alpha and ribavirin for 48 weeks combined with symptomatic treatment (diuretics, angiotensin converting enzyme inhibitors and angiotensin receptor blockers). In case of severe renal involvement (nephrotic syndrome, nephritic syndrome and/or progressive renal failure, high activity score of glomerulonephritis on light microscopy), the initial treatment may consist of sequential administration of immunosuppressive therapies (plasmapheresis, corticosteroids and cyclophosphamide) and antiviral agents, although no definitive data are yet available from the literature. B-cell depleting agents such as rituximab may be an alternative to conventional therapy in refractory or intolerant patients. Large randomized and controlled clinical trials are needed to establish guidelines for the treatment of HCV-related cryoglobulinemic glomerulonephritis.
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