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- W2019932870 abstract "To determine the clinical significance of viral quasispecies heterogeneity, 59 patients with chronic hepatitis C were studied using single-stranded conformational polymorphism (SSCP) analysis of the HCV E2 hypervariable region 1 (HVR1); of these, 48 were subsequently treated with interferon-α. The SSCP method was validated using clones of known nucleotide sequence. HVR1 was amplified in 54 of 59 (92%) patients. The median number of SSCP bands per sample was 6 (range: 2–12). Increased quasispecies heterogeneity correlated with the estimated duration of HCV infection (P < 0.05), parenteral-acquired HCV infection (vs. sporadic, P < 0.05), serum HCV RNA levels (P < 0.05), and HCV genotype 1 infection (P < 0.05), but not with age, serum AST, ALT, or Knodell score. Patients who had complete and sustained response to interferon-α (n = 11) had lower pre-treatment quasispecies heterogeneity compared to patients who had complete response with relapse (n = 18, P < 0.05) or no complete response (n = 16, P < 0.01). However, multivariate analysis revealed that HCV viremia was a stronger predictor of response to interferon-α. These findings indicate that the estimated duration of HCV carriage, serum HCV RNA levels, and HCV type 1 are important determinants for the evolution of HCV quasispecies heterogeneity; and that increased HCV quasispecies heterogeneity is another marker associated with a poor subsequent response to interferon-α. © 1996 Wiley-Liss, Inc." @default.
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- W2019932870 date "1996-07-01" @default.
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- W2019932870 title "Clinical implications of viral quasispecies heterogeneity in chronic hepatitis C" @default.
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- W2019932870 doi "https://doi.org/10.1002/(sici)1096-9071(199607)49:3<242::aid-jmv14>3.0.co;2-e" @default.
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