Saudi Journal of Gastroenterology
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Year : 2015  |  Volume : 21  |  Issue : 3  |  Page : 146-151

Virologic response and safety of tenofovir versus entecavir in treatment-naïve chronic Hepatitis B patients

Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea, South Korea

Correspondence Address:
So Young Kwon
Department of Internal Medicine Gastroenterology, Konkuk University Hospital, Hwayang-dong, Kwangjin-gu, Seoul, Korea - 143 729
South Korea
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/1319-3767.157558

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Background/Aims: This study aimed to evaluate the antiviral response and safety of tenofovir (TDF) versus entecavir (ETV) in treatment-naïve CHB patients. Patients and Methods: We performed a retrospective cohort study of treatment-naive CHB patients who were treated with TDF or ETV. We analyzed virologic, biochemical, and serologic responses at 3, 6, and 12 months. Results: A total of 107 patients (TDF group = 49, ETV group = 58) were included. Baseline characteristics were similar between the two groups. The estimated proportion of complete virologic response (CVR) in the TDF or ETV group was 44.9% versus 39.7% at 6 months and 89.6% versus 83.2% at 12 months, respectively (P = 0.991). Viral breakthrough was not observed in both groups. One patient in the TDF group and two patients in the ETV group experienced HBeAg loss, respectively (P = 0.657). High HBV DNA level at baseline was a significant negative predictor of virologic response by Cox regression analysis (P = 0.007). The safety profile was similar between the two groups. There was no case with serious adverse event. Conclusions: Both TDF and ETV were effective in achieving CVR and had a favorable safety profile in treatment-naïve CHB patients. High viral load at baseline was a negative predictive factor of CVR.

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