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  • Title: Serum HCV-RNA and liver histologic findings in patients with long-term normal transaminases.
    Author: Montalto G, Zignego AL, Ruggeri MI, Giannini C, Soresi M, Monti M, Carroccio A, Careccia G, Di Martino D, Giannelli F.
    Journal: Dig Dis Sci; 1997 Aug; 42(8):1703-7. PubMed ID: 9286237.
    Abstract:
    In this study we aimed to correlate liver histology and the presence of hepatitis C virus (HCV) viremia, genotype, and quantity of HCV genome in 19 positive and 11 RIBA II indeterminate patients presenting persistently normal ALT values over 24 months before biopsy. In addition, after biopsy serum ALT values were monitored monthly for a mean follow-up period of 24.8 months, after which patients were reevaluated for RIBA II and the presence of viremia. Sixteen patients (53%) were serum HCV-RNA-positive; 13 of them (68%) were confirmed positive and 3 (27%) indeterminate on RIBA II. Histology of the HCV-RNA-positive patients showed eight cases of CPH (one case of genotype 1a; four cases type 1b; three cases type 2), six cases of CAH (three cases type 1b, three cases type 2), one case of CLH (type not determined), and one case of normal liver (NL) (type 1b). Histology of the HCV-RNA-negative patients showed four cases of CPH, one case of CAH, two cases of CLH, and seven cases of NL. During the follow-up period nine patients (30%) presented slight increases in ALT values (< 2 x N), and in particular, flares of ALT were observed four times in the CAH and five times in the CPH patients, who were all viremic, but never in the NL subjects. These results indicate that subjects positive on RIBA II, but with persistently normal ALT values, had a high probability of being serum HCV-RNA-positive and that almost all these viremic subjects presented histologic signs of liver disease. In contrast, RIBA II indeterminate subjects had a moderate probability of being HCV-RNA-positive, but a number of these may present signs of liver disease. In both cases there was no association with genotype or HCV-RNA serum levels. The other nonviremic cases included subjects with hepatic changes going toward resolution or with normal liver in whom hepatic biopsy can be avoided. Only one case was a true carrier since he was viremic with normal liver and persistently normal ALT values.
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