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01.12.2017 | Research article | Ausgabe 1/2017 Open Access

BMC Gastroenterology 1/2017

Comparison of the long-term efficacy between entecavir and tenofovir in treatment- naïve chronic hepatitis B patients

Zeitschrift:
BMC Gastroenterology > Ausgabe 1/2017
Autoren:
Ji Won Park, Kyeong Min Kwak, Sung Eun Kim, Myoung Kuk Jang, Ki Tae Suk, Dong Joon Kim, Sang Hoon Park, Myung Seok Lee, Hyoung Su Kim, Choong Kee Park

Abstract

Background

There have been limited studies directly comparing the long-term efficacy between entecavir (ETV) and tenofovir disoproxil fumarate (TDF). This study was aimed to compare the long-term efficacy between them in treatment-naïve chronic hepatitis B (CHB).

Methods

Out of 345 CHB patients who received first line therapy with ETV (n = 200) or TDF (n = 145) in a cohort, 210 patients were analyzed using propensity score matching, at a ratio of 1:1.

Results

Two groups showed no difference in baseline characteristics. During the follow-up of 12 months, HBV DNA levels were similarly suppressed in both groups (ETV vs. TDF; −5.01 vs. -5.242 log10IU/mL, P = 0.559). At month 12, both groups showed no difference in terms of the serologic, biochemical and virologic (VR) response. In multivariate analysis, the initial virologic response at 3 months (IVR-3) was independent factor for VR at 1 year. During the long-term follow-up, HBV DNA levels were more strongly suppressed by TDF than ETV in hepatitis B e antigen (HBeAg) positive patients (P = 0.035), especially with high viral load (P = 0.012), although there was no significant difference in overall VR between two groups. The type of antivirals was not an independent factor for long-term VR.

Conclusions

Although either ETV or TDF, overall, may show a comparable long-term antiviral efficacy in treatment-naïve CHB, TDF might be better regimen than ETV in the subgroup of HBeAg-positive CHB, especially with a higher HBV DNA levels.
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