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Partial Virological Response to Adefovir Add-On Lamivudine Rescue Therapy in Patients with Lamivudine-Resistant Chronic Hepatitis B

Authors
 Chon Y.E. ; Park J.Y. ; Kim S.U ; Choi A. ; Chon C.Y. ; Han K.-H. ; Kim D.Y. ; Ahn S.H. 
Citation
 Digestion, Vol.87(3) : 196~203, 2013 
Journal Title
 Digestion 
ISSN
 0012-2823 
Issue Date
2013
Abstract
BACKGROUND/AIMS: In patients with lamivudine (LAM)-resistant chronic hepatitis B (CHB) receiving adefovir (ADV) add-on LAM therapy, insufficient viral suppression or the appearance of additional ADV resistance has remained unresolved. This study determined the partial virological response (PVR) criteria to predict a virological response (VR) at week 96 in these patients. METHODS: 96 patients with LAM-resistant CHB (ADV add-on LAM therapy >2 years) were analyzed. For predicting VR at week 96, the area under the receiver operating characteristic curve values at different time points were compared to establish the optimal time point, and the maximal Youden index was calculated to determine the optimal cut-off hepatitis B virus (HBV) DNA level. RESULTS: 50 (52.1%) patients achieved VR at 2 years after ADV add-on LAM therapy. The optimal PVR criteria were determined to be HBV DNA 500 IU/ml at week 48. 44 (45.8%) patients who met optimal PVR criteria showed a significantly higher risk for detectable HBV DNA levels at week 96 than those with a favorable VR (HBV DNA <500 IU/ml) at week 48. CONCLUSIONS: This study suggested optimal PVR criteria in patients with LAM-resistant CHB receiving ADV add-on LAM therapy. Modification of the antiviral agent regimen should be considered if the serum HBV DNA level exceeds 500 IU/ml at week 48.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/87000
DOI
10.1159/000348853
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Obstetrics & Gynecology
1. 연구논문 > 1. College of Medicine > Dept. of Internal Medicine
Yonsei Authors
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Link
 http://www.karger.com/Article/FullText/348853
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