Comparison of lamivudine plus adefovir therapy versus entecavir with or without adefovir therapy for adefovir-resistant chronic hepatitis B
- Authors
- Kang, Seong Hee; Yim, Hyung Joon; Kim, Hae Rim; Kang, Keunhee; Suh, Sang Jun; Lee, Hyun Jung; Yoon, Eileen L.; Kim, Ji Hoon; Seo, Yeon Seok; Yeon, Jong Eun; Byun, Kwan Soo
- Issue Date
- Nov-2014
- Publisher
- Lippincott Williams and Wilkins
- Keywords
- Adefovir; Chronic hepatitis B; Entecavir; Lamivudine; Resistance
- Citation
- Journal of Clinical Gastroenterology, v.48, no.10, pp 889 - 895
- Pages
- 7
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Journal of Clinical Gastroenterology
- Volume
- 48
- Number
- 10
- Start Page
- 889
- End Page
- 895
- URI
- https://scholarworks.korea.ac.kr/kumedicine/handle/2020.sw.kumedicine/9835
- DOI
- 10.1097/mcg.0000000000000066
- ISSN
- 0192-0790
1539-2031
- Abstract
- Background and Goals:
Data regarding the management of adefovir (ADV) resistance are still limited. The aim of this study is to investigate treatment outcomes of rescue therapy in ADV-resistant chronic hepatitis B (CHB) patients.
Study:
CHB patients who began rescue therapy due to documented genotypic resistance mutations to ADV between October 2006 and July 2012 were retrospectively reviewed.
Results:
Sixty-three patients were included in this study. Most patients had history of lamivudine (LAM) resistance. Treatment response was evaluated at 3-month intervals up to 12 months. The cumulative rate of complete virologic response (CVR) in hepatitis B virus (HBV)-infected patients (HBV DNA<60 IU/mL) was 15.9%, 27.2%, 28.9%, and 31.7% after 3, 6, 9, and 12 months of rescue therapy. Thirty-five patients were treated with a combination of LAM plus ADV (LAM+ADV group) and 28 patients were treated with entecavir (ETV)-based therapy (ETV with or without ADV therapy, ETV±ADV group). The cumulative CVR rate was significantly higher in the ETV±ADV group than in the LAM+ADV group at month 12 (46.4% vs. 20.6%, respectively, P=0.040). Multivariate analysis showed that pretreatment serum HBV DNA levels at <6 log10 IU/mL (hazard ratio: 34.109, P=0.001) and type of rescue therapy (hazard ratio: 4.944, P=0.036) were associated with CVR.
Conclusions:
Lower baseline HBV DNA level and ETV±ADV therapy were the important predictive factors for CVR in ADV-resistant CHB patients. This study suggests the need of early switching to a rescue therapy such as ETV±ADV at the time of low-level viremia.
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Collections - 2. Clinical Science > Department of Gastroenterology and Hepatology > 1. Journal Articles
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