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Sirolimus conversion may suppress viral replication in hepatitis C virus-positive renal transplant candidates

Amin Soliman1, Ahmed Fathy, Sahier Khashab

  • 1Department of Nephrology, Cairo University, Cairo, Egypt.

Experimental and Clinical Transplantation : Official Journal of the Middle East Society for Organ Transplantation
|October 17, 2013
PubMed
Abstract

Insights

Sirolimus may help suppress Hepatitis C virus (HCV) replication in kidney transplant patients. This study observed reduced viral load in sirolimus-treated patients, with manageable hepatic and hematologic effects.

Area of Science:

  • Nephrology
  • Hepatology
  • Immunology

Background:

  • Hepatitis C virus (HCV) is a significant risk factor for morbidity and mortality in renal transplant recipients.
  • Sirolimus-based immunosuppression has shown potential in limiting HCV progression in liver transplant recipients.
  • The mammalian target of rapamycin pathway is crucial for interferon's anti-HCV activity.

Purpose of the Study:

  • To evaluate the hepatic and hematologic effects of sirolimus conversion in HCV-positive renal transplant recipients with chronic allograft nephropathy.
  • To assess the impact of sirolimus on viral replication in this patient population.

Main Methods:

  • Twenty-five HCV-positive renal transplant recipients with normal liver function were enrolled.
  • Ten patients with allograft dysfunction due to cyclosporine nephrotoxicity were switched to sirolimus.
  • A control group of 15 patients remained on cyclosporine; sirolimus dosage was adjusted to maintain target levels (6-8 ng/mL).

Main Results:

  • Sirolimus conversion led to a significant decrease in HCV RNA levels (P < .001).
  • One patient (10%) developed sirolimus-associated hepatotoxicity, requiring a switch back to cyclosporine.
  • Comparable transaminase levels were observed between the sirolimus and cyclosporine groups.

Conclusions:

  • Sirolimus demonstrates potential in suppressing viral replication in HCV-positive kidney transplant candidates.
  • Hepatic and hematologic effects associated with sirolimus require careful monitoring but appear manageable.

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