Predicting response to peginterferon α-2a, lamivudine and the two combined for HBeAg-negative chronic hepatitis B

Bonino, F.; Marcellin, P.; Lau, G. K. K.; Hadziyannis, S.; Jin, R.; Piratvisuth, T.; Germanidis, G.; Yurdaydin, C.; Diago, M.; Gurel, S.; Lai, M.-Y.; Brunetto, M. R.; Farci, P.; Popescu, M.; McCloud, P.
May 2007
Gut;May2007, Vol. 56 Issue 5, p699
Academic Journal
Objective: In a trial of patients with hepatitis B e antigen (HBeAg)-negative chronic hepatitis B, 24 week post-treatment biochemical and virological response rates with peginterferon α-2a with or without lamivudine were significantly higher than with lamivudine alone. The effect of pre-treatment factors on post-treatment responses was investigated. Methods: Multivariate analyses were performed using available data from 518 patients treated with peginterferon α-2a with or without lamivudine, or with lamivudine alone. A post-treatment response was defined as alanine aminotransferase (ALT) normalisation and hepatitis B virus (HBV) DNA level of <20 000 copies/ml. Results: In logistic regression analyses across all treatment arms, peginterferon α-2a (with or without lamivudine) therapy, younger age, female gender, high baseline ALT, low baseline HBV DNA and HBV genotype were identified as significant predictors of combined response at 24 weeks post-treatment. In the peginterferon α-2a and lamivudine monotherapy arms, patients with genotypes B or C had a higher chance of response than genotype D infected patients (p<0.001), the latter responding better to the combination than to peginterferon α-2a monotherapy (p = 0.015). At 1 year post-treatment, response rates by intention-to-treat analysis were 19.2% for the peginterferon α-2a, 19.0% for the combination, and 10.0% for the lamivudine groups, with genotypes B or C associated with a sustained combined response to peginterferon α-2a with or without lamivudine therapy. Conclusions: Baseline ALT and HBV DNA levels, patient age, gender, and infecting HBV genotype significantly influenced combined response at 24 weeks post-treatment, in patients treated with peginterferon α-2a and/or lamivudine. At 1 year post-treatment HBV genotype was significantly predictive of efficacy for patients treated with peginterferon α-2a with or without lamivudine.


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