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Title: Long-term histologic improvement and loss of detectable intrahepatic HCV RNA in patients with chronic hepatitis C and sustained response to interferon-alpha therapy. Author: Marcellin P, Boyer N, Gervais A, Martinot M, Pouteau M, Castelnau C, Kilani A, Areias J, Auperin A, Benhamou JP, Degott C, Erlinger S. Journal: Ann Intern Med; 1997 Nov 15; 127(10):875-81. PubMed ID: 9382365. Abstract: BACKGROUND: Less than 20% of patients with chronic hepatitis C have a sustained response to interferon-alpha therapy. The long-term benefit of interferon-alpha with regard to hepatic viral clearance and histologic improvement remains unknown. OBJECTIVE: To determine the long-term biochemical, virologic, and histologic outcomes in patients with chronic hepatitis C who have a sustained response to interferon-alpha therapy. DESIGN: Prospective cohort study. SETTING: University hospital. PATIENTS: 80 patients who had chronic hepatitis C, had a sustained biochemical and virologic response to interferon-alpha therapy, and were followed for at least 12-months. MEASUREMENTS: Serum hepatitis C virus (HCV) RNA detected by polymerase chain reaction (PCR); HCV genotyping determined by line probe assay; liver histologic studies; liver HCV RNA detected by PCR on frozen liver tissue samples (in 27 patients); and repeated measurements of serum alanine aminotransferase (ALT) levels. Liver biopsy was done before treatment in all 80 patients, and at least one biopsy was done in 69 patients 1 to 6 years after treatment. RESULTS: The 80 patients had follow-up 1 to 7.6 years (mean +/- SD, 4.0 +/- 2.0 years) after interferon-alpha treatment. The follow-up period was 1, 2, 3, 4, 5, 6, and more than 6 years in 11, 13, 14, 18, 10, 12, and 2 patients, respectively, after the end of therapy. During the entire follow-up period, 93% (95% CI, 84% to 97%) of patients had persistently normal serum ALT levels. Serum HCV RNA remained undetectable in 96% (CI, 89% to 99%) of patients. A comparison of liver histologic findings before and 1 to 6.2 years after interferon-alpha treatment showed a clear improvement in 94% (CI, 83% to 99%) of patients. In 62% of patients, the last biopsy done showed normal or nearly normal histologic findings. Liver HCV RNA was detectable before treatment in all 13 patients tested and was undetectable 1 to 5 years after treatment in all 27 patients tested. CONCLUSIONS: In patients with chronic hepatitis C who have persistently normal serum ALT levels and no detectable serum HCV RNA 6 months after interferon-alpha therapy, a long-term sustained biochemical and virologic response is generally seen. This response is associated with an absence of detectable intrahepatic HCV RNA and marked histologic improvement.[Abstract] [Full Text] [Related] [New Search]