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  • Title: A long-term follow-up study of interferon treatment for chronic hepatitis C in Japanese patients with congenital bleeding disorders.
    Author: Yamada M, Fukuda Y, Koyama Y, Nakano I, Urano F, Isobe K, Takamatsu J, Imoto M, Hayakawa T.
    Journal: Eur J Haematol; 1996 Aug; 57(2):165-70. PubMed ID: 8856094.
    Abstract:
    Twenty-one HIV negative Japanese patients with chronic hepatitis C who had congenital bleeding disorders, 15 hemophilia A, 3 hemophilia B, 1 von Willebrand's disease, 1 afibrinogenemia and 1 thrombasthenia, were treated with 9 million units 3 times a week of natural interferon (IFN)-alpha for 6 months. They were followed, biochemically and virologically, for at least 18 months after therapy discontinuation to evaluate the long-term results. Liver biopsy, hepatitis C virus (HCV) genotyping and quantification of viral load by polymerase chain reaction (PCR) were performed to identify the predictors of a favorable response to IFN treatment. One male patient with hemophilia A dropped out because of general fatigue and was excluded from evaluation. Ten (50.0%) patients continued to be HCV RNA negative in serum together with normal ALT levels throughout the study. Subtype 1b and a high level of viremia significantly associated with an unfavorable outcome on the response to IFN although liver histology was not definitive for predicting the response. We concluded that a 6-month treatment with high doses of natural IFN-alpha was effective in inducing a long-term response without relapse of viremia in 50% of chronic hepatitis C patients with congenital bleeding disorders and that HCV subtype and pretreatment level of viremia were useful predictors of the response to IFN in treating such patients.
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