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| Content Provider | PubMed Central |
|---|---|
| Author | Lee, Jeong-hoon Cho, Yuri Lee, Dong Hyeon Lee, Minjong Yoo, Jeong-ju Choi, Won-mook Cho, Young Youn Lee, Yun Bin Jong, Yu Su Yoon, Jung-hwan Lee, Hyo-suk Kim, Yoon Jun |
| Copyright Year | 2014 |
| Abstract | The efficacy of entecavir (ETV) treatment in chronic hepatitis B (CHB) patients who were exposed to lamivudine (LAM) but had no detectable LAM resistance (LAM-R) is not well evaluated. In this study, we aimed to evaluate whether the probability of developing genotypic resistance to ETV in LAM-exposed patients with or without LAM-R is comparable to that in antiviral-naive patients. This retrospective cohort study included 500 consecutive patients with CHB who started ETV monotherapy at a single tertiary hospital in Korea. The patients were divided into three groups: nucleos(t)ide analogue (NA)-naive patients (group 1, n = 142), patients who were previously exposed to LAM and had no currently or previously detected LAM-R (group 2, n = 233), and patients with LAM-R when starting ETV (group 3, n = 125). The overall median ETV treatment duration was 48.7 months. The probabilities of virologic breakthrough were significantly increased not only in group 3 (hazard ratio [HR] = 14.4, P < 0.001) but also in group 2 (HR = 5.0, P < 0.001) compared to group 1. Genotypic ETV resistance (ETV-R) developed more frequently in group 2 (HR = 13.0, P = 0.013) as well as group 3 (HR = 43.9, P < 0.001) than in group 1: the probabilities of developing ETV-R in groups 1, 2, and 3 were <1.0%, 8.0%, and 28.2%, respectively, at month 48. The results of this study indicate that ETV-R occurred more frequently in LAM-exposed patients, even though they had no detectable LAM-R, than in NA-naive patients. Therefore, LAM-exposed CHB patients, regardless of the presence or absence of LAM-R, should be monitored more cautiously for the development of ETV-R during ETV monotherapy. |
| Related Links | http://dx.doi.org/10.1128/AAC.02483-13 |
| Ending Page | 1737 |
| Page Count | 8 |
| Starting Page | 1730 |
| File Format | |
| ISSN | 10986596 |
| e-ISSN | 10986596 |
| Journal | Antimicrobial Agents and Chemotherapy |
| Issue Number | 3 |
| Volume Number | 58 |
| Language | English |
| Publisher | American Society for Microbiology |
| Publisher Date | 2014-03-01 |
| Access Restriction | Open |
| Rights Holder | American Society for Microbiology |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Infectious Diseases Pharmacology Pharmacology (medical) |
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