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Outcomes of interferon α and ribavirin treatment for chronic hepatitis C in patients with normal serum aminotransaminases

Abstract

Introduction: Information on treatment outcomes with interferon plus ribavirin combination therapy in chronic hepatitis C patients with normal alanine aminotransaminase (ALT) levels is limited.

Aim: The aims of this study were to assess outcomes of treatment with interferon plus ribavirin in patients with normal ALT levels (normal ALT group, n=52) compared with those with elevated ALT levels (raised ALT group, n=53), and to document the rate at which patients with normal ALT levels have an apparent worsening of disease, as shown by increases in ALT levels.

Results: At the end of treatment (week 48), 31 patients (59.6%) in the normal ALT group and 30 patients (56.6%) in the raised ALT group had undetectable hepatitis C virus (HCV) RNA (p=0.75). A sustained virological response (SVR) was achieved in 20 patients (38.5%) in the normal ALT group and in 21 patients (39.6%) in the raised ALT group (p=0.90). Patients were subsequently followed up for a median of 29.8 (interquartile range 25th–75th percentile (IQR) 20.8–36.2) months in the normal ALT group and for a median of 26.1 (IQR 17.7–36.3) months in the raised group (p=0.20) after week 72 of treatment. Among patients without SVR in the normal ALT group, only three patients (9.4%) developed persistently raised ALT levels following therapy.

Conclusions: Combination therapy with interferon plus ribavirin is associated with a similar SVR in patients with normal ALT levels compared with those with elevated ALT levels. In patients with normal ALT levels, virological non-response to therapy results in new elevations in serum ALT levels in a small minority only.

  • alanine aminotransaminase
  • hepatitis C
  • antiviral therapy
  • interferon α
  • ribavirin
  • HCV, hepatitis C virus
  • ALT, alanine aminotransaminase
  • AST, aspartate aminotransaminase
  • SVR, sustained virological response
  • ULN, upper limit of normal
  • IQR, interquartile range
  • OR, odds ratio

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