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Liver Int. 2019 Nov 13. doi: 10.1111/liv.14298. [Epub ahead of print]
Quantitation of large, middle and small hepatitis B surface proteins in HBeAg-positive patients treated with peginterferon alfa-2a.
Rinker F1,2, Bremer CM3,4, Schröder K3,4, Wiegand SB1, Bremer B1, Manns MP1,2, Kraft AR1,2, Wedemeyer H1,2, Yang L5, Pavlovic V6,7, Wat C6, Gerlich WH3, Glebe D3,4, Cornberg M1,2,8,9.
Author information
1
Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625, Hannover, Germany.
2
German Center for Infection Research (DZIF), Partner Site: Hannover, Braunschweig, Germany.
3
Institute of Medical Virology, Justus Liebig University Giessen, National Reference Center for Hepatitis, B and D Viruses, D-35392, Giessen, Germany.
4
German Center for Infection Research (DZIF), Partner Site: Giessen-Marburg-Langen, Germany.
5
Roche (China) Holding Ltd, Product Development - Biometrics/Biostatistics, Shanghai, 201203, China.
6
Roche Products Ltd, Product Development - Clinical Science, Welwyn Garden City, AL7 1TW, UK.
7
VP Pharma Consultancy, London, UK.
8
Centre for Individualized Infection Medicine (CIIM), Hannover, Germany.
9
Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany.
Abstract
BACKGROUND & AIMS:
Hepatitis B virus (HBV) contains three viral surface proteins, large, middle and small hepatitis B surface protein (LHBs, MHBs, SHBs). Proportions of LHBs and MHBs are lower in patients with inactive versus active chronic infection. Interferon alfa may convert HBeAg-positive chronic hepatitis B (CHB) to an inactive carrier state, but prediction of sustained response is unsatisfactory. The aim of this study was to test the hypothesis that quantification of MHBs and LHBs may allow for a better prognosis of therapeutic response than total hepatitis B surface antigen (HBsAg) concentration.
METHODS:
HBs proteins were measured before and during peginterferon alfa-2a therapy in serum from 127 Asian patients with HBeAg-positive CHB. Sustained response was defined as hepatitis B e antigen (HBeAg) seroconversion 24 weeks post-treatment.
RESULTS:
Mean total HBs levels were significantly lower in responders versus nonresponders at all time points (P<.05) and decreased steadily during the initial 24 weeks' treatment (by 1.16 versus 0.86 ng/mL in responders/nonresponders, respectively) with unchanged relative proportions. Genotype B had a twofold higher proportion of LHBs than genotype C (13% versus 6%). HBV DNA, HBeAg, HBsAg, and HBs protein levels predicted response equally well but not optimally (area under the ROC curve values >0.70).
CONCLUSIONS:
HBs proteins levels differ by HBV genotype. However, quantification of HBs proteins has no advantage over the already established HBsAg assays to predict response to peginterferon alfa-2a therapy in HBeAg-positive patients.
© 2019 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
KEYWORDS:
HBs proteins; HBsAg; peginterferon alfa-2a; predictors of response; subviral particles
PMID:
31721419
DOI:
10.1111/liv.14298
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