Interferon Alfa-2a Therapy in Cryoglobulinemia Associated with Hepatitis C Virus
1994
Background Essential mixed cryoglobulinemia is frequently associated with hepatitis C virus (HCV) infection. A beneficial effect of interferon alfa therapy has been reported, but we do not know whether the antiviral activity of the drug affects the clinical and biochemical manifestations of disease. Methods In a prospective randomized, controlled trial, we studied 53 patients with HCV-associated type II cryoglobulinemia. A group of 27 patients received recombinant interferon alfa-2a thrice weekly at a dose of 1.5 million units for a week and then 3 million units thrice weekly for the following 23 weeks. The 26 control patients did not receive anything apart from previously prescribed treatments. All patients were then followed for an additional 24 to 48 weeks. Results Interferon was usually well tolerated, but it was permanently discontinued in two patients because of atrial fibrillation and depression. Two of the 26 patients in the control group were lost to follow-up. After the treatment period, serum H...
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