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Chronic hepatitis C (non-A, non-B hepatitis) is a common and often progressive viral liver disease. To assess the efficacy of therapy with the antiviral agent interferon alfa, we randomly assigned 166 patients with chronic hepatitis C to treatment with either 3 million or 1 million units of recombinant interferon alfa three times weekly for 24 weeks, or to no treatment. The probability of normalization or near normalization of the serum alanine aminotransferase levels after six months of interferon therapy was 46 percent in patients treated with 3 million units of interferon (P less than 0.001) and 28 percent in those treated with 1 million units (P less than 0.02), but only 8 percent in untreated patients. The serum alanine aminotransferase level became completely normal in 22 of the 26 patients (85 percent) who responded to treatment with 3 million units of interferon and 9 of the 16 patients (56 percent) who responded to treatment with 1 million units. The patients who received 3 million units of interferon had histologic improvement because of the regression of lobular and periportal inflammation. Relapse within six months after the completion of treatment occurred in 51 percent of the patients treated with 3 million units of interferon and 44 percent of those treated with 1 million units. We conclude that a 24-week course of interferon therapy is effective in controlling disease activity in many patients with hepatitis C, although relapse after the cessation of treatment is common.

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Hepatitis C virus (HCV) is a major cause of chronic liver disease worldwide, affecting 175 million people globally. Over 80% of acutely infected patients go on to develop chronicity, but only 20% to 25% will develop end-stage liver disease and its complications. The sequelae of HCV-induced chronic liver disease accounts for 8,000 to 10,000 deaths annually in the United States and is currently the leading indication for liver transplantation. To date, there are no accurate noninvasive markers of disease activity and fibrosis. Liver biopsy is indicated to exclude other forms of liver pathologies and to establish the stage of liver disease. In this study, the role of liver biopsy in chronic hepatitis C was evaluated. Additionally, we calculated a discriminant score to predict cirrhosis in chronic hepatitis C infection. Our results showed that additional diagnoses or unsuspected diagnoses are less frequent than clinicians' suspected. We confirmed that the discriminant score for predicting cirrhosis is inferior to liver biopsy. In conclusion, the majority of patients with chronic hepatitis C will require a liver biopsy, which has an important implication on staging of the liver disease, prognosis, and possibly further management options. (HEPATOLOGY 2001;33:196-200.)