Gene/Protein Disease Symptom Drug Enzyme Compound
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The efficacy of long-term interferon therapy for chronic hepatitis C infection with symptomatic mixed cryoglobulinemia has not clearly been defined. We describe a patient with chronic hepatitis C, symptomatic mixed cryoglobulinemia (cutaneous vasculitis), and membranoproliferative glomerulonephritis (MPGN) who responded clinically, biochemically, and virologically to a 1-year course of interferon therapy. Interferon side effects were minimal. Relapse occurred when interferon was discontinued, and suppressive maintenance interferon therapy was required for clinical, biochemical, and virologic remission. During the 5th year of maintenance therapy, she developed potential side effects that necessitated discontinuation of interferon treatment. After treatment stoppage, a clinical, biochemical, and virologic remission was maintained for more than 1 year. However, the potential side effects, which included eye irritation, arthralgias, myalgias, fatigue, insomnia, memory loss, and depression, persisted. Ophthalmologic, rheumatologic, and neurologic evaluations were nondiagnostic. Psychometric testing revealed dementia and mood disorder. Because the disabling symptoms persisted after 9 months, a health-related quality of life assessment was carried out with the SF-36 survey. Compared with healthy individuals and patients with chronic hepatitis C, our case had a lower health-related quality of life assessment on six out of seven scales and on four out of seven scales of the SF-36 survey, respectively. This case report indicates that long-term maintenance interferon therapy was effective in the treatment of symptomatic mixed cryoglobulinemia and its renal complications and resulted in a clinical, biochemical, and virologic sustained response. It is postulated that the side effects of long-term interferon therapy in this setting may be problematic.
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PMID:The benefit of long-term interferon alfa therapy for symptomatic mixed cryoglobulinemia (cutaneous vasculitis/membranoproliferative glomerulonephritis) associated with chronic hepatitis C infection. 1146 41