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Serum HBV RNA as a Predictor of Peginterferon Alfa-2a Response in Patients With HBeAg-Positive Chronic Hepatitis B
Florian van Bömmel Alena van Bömmel Alexander Krauel Cynthia Wat Vedran Pavlovic Lei Yang Danilo Deichsel Thomas Berg Stephan Böhm
The Journal of Infectious Diseases, Volume 218, Issue 7, 24 August 2018, Pages 1066–1074, https://doi.org/10.1093/infdis/jiy270
Published:
08 May 2018
Abstract
Background
Hepatitis B virus (HBV) RNA is a novel serum biomarker that has the potential to predict treatment response in patients with chronic hepatitis B. We explored whether HBV RNA serum levels can predict hepatitis B e antigen (HBeAg) seroconversion in patients treated with peginterferon alfa-2a.
Methods
Serum samples from HBeAg-positive patients previously treated with peginterferon alfa-2a in 2 large randomized controlled trials were retrospectively analyzed. HBV RNA levels were measured using a real-time polymerase chain reaction assay. Ability of individual biomarkers to predict HBeAg seroconversion at 24 weeks posttreatment was evaluated using receiver operating characteristics (ROC) analyses.
Results
The study included 131 subjects (70% male, 96% Asians, 35% HBV genotypes B, and 61% C), 76 treated with peginterferon alfa-2a alone and 55 in combination with lamivudine. Median HBV RNA levels were significantly lower, at all timepoints, in patients achieving HBeAg seroconversion. Levels of HBV RNA at treatment weeks 12 and 24 showed good ability to predict HBeAg seroconversion (area under ROC scores >0.75, P < .001). A HBV RNA cutoff of >5.5 log10 copies/mL identified 30% of nonresponders at week 12 (negative predictive value >90%).
Conclusion
Serum HBV RNA is an early predictor of HBeAg seroconversion in patients treated with peginterferon alfa-2a.
Clinical Trials Registration
NCT01705704.
PegIFN, stopping rules, CHB, biomarkers, HBV RNA, life cycle
Topic:
biological markers hepatitis b e antigens hepatitis b, chronic hepatitis b virus rna peginterferon alfa-2a
Issue Section:
Viruses
© The Author(s) 2018. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: [email protected]. |
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