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JAIDS Journal of Acquired Immune Deficiency Syndromes:
CLINICAL SCIENCE: PDF Only

Pretreatment of Chronic Active Hepatitis C in Patients Coinfected With HIV and Hepatitis C Virus Reduces the Hepatotoxicity Associated With Subsequent Antiretroviral Therapy

Uberti-Foppa, Caterina; De Bona, Anna; Morsica, Giulia; Galli, Laura; Gallotta, Giulia; Boeri, Enzo; Lazzarin, Adriano

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Abstract

Summary: Chronic hepatitis C virus (HCV) is an independent risk factor for antiretroviral-related hepatotoxicity, but little is known about the frequency of severe liver toxicity in patients with HIV-HCV coinfection first treated for HCV (pretreated). The aim of this prospective study of 105 patients was to compare the incidence of progression to severe antiretroviral-related liver toxicity in 66 patients pretreated (36 with interferon-[alpha] [IFN[alpha]], 30 with IFN[alpha] plus ribavirin), and 39 patients not pretreated. The subjects could choose whether to receive anti-HCV therapy. Severe liver toxicity was defined as alanine aminotransferase (ALT) level >=5-times the upper limit of normal in patients with normal baseline levels and >=3.5-times in those with increased baseline levels. The authors also estimated the hepatotoxicity-related risk of discontinuing antiretroviral therapy. During antiretroviral therapy, 10 subjects (9.5%) experienced severe hepatotoxicity: 4 of 66 pretreated patients and 6 of 39 untreated patients (24month survival: 94% +/- 2.9% vs. 85% +/- 5.8%). After adjusting for baseline CD4 cell counts, ALT levels, histologic scores, HCV and HIV viremia, HCV genotype (genotype 1 in 29% of pretreated patients and 20% of patients not pretreated), and previous anti-HCV therapy, the risk of discontinuing anti-HIV treatment was significantly higher in the anti-HCV untreated patients (RR = 10.4; 95% CI: 1.6-66; p = .0127) and in those with increased baseline ALT levels (RR = 1.014; 95% CI: 1.006-1.021; p = .0005). The authors' data suggest that previous treatment of chronic active HCV is an independent factor associated with a decrease of severe liver toxicity as the result of a subsequent antiretroviral regimen. The authors also confirm that the baseline level of ALT is an important prognostic factor for increased liver damage during antiretroviral therapy.

(C) 2003 Lippincott Williams & Wilkins, Inc.

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