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Hi. Lualu:
恩替卡韦几个月耐药的还不在少数。
For your reference:
Entecavir Treatment for up to 5 Years in Patients with
Hepatitis B e Antigen–Positive Chronic Hepatitis B
Ting-Tsung Chang,1 Ching-Lung Lai,2 Seung Kew Yoon,3 Samuel S. Lee,4 Henrique Sergio M. Coelho,5
Flair Jose Carrilho,6 Fred Poordad,7 Waldemar Halota,8 Yves Horsmans,9 Naoky Tsai,10 Hui Zhang,11 Daniel J. Tenney,11
Ricardo Tamez,12 and Uchenna Iloeje11
Sustained virologic suppression is a primary goal of therapy for chronic hepatitis B (CHB).
In study entecavir (ETV)-022, 48 weeks of entecavir 0.5 mg was superior to lamivudine for
virologic suppression for hepatitis B e antigen (HBeAg)-positive CHB. A total of 183 entecavir-
treated patients from ETV-022 subsequently enrolled in study ETV-901. We present
the results after up to 5 years (240 weeks) of continuous entecavir therapy. The entecavir
long-term cohort consists of patients who received >1 year of entecavir 0.5 mg in ETV-022
and then entered ETV-901 with a treatment gap <35 days. In ETV-901 the entecavir dose
was 1.0 mg daily. For patients with samples available at Year 5, proportions with hepatitis B
virus (HBV) DNA <300 copies/mL, normal alanine aminotransferase (ALT) levels, HBeAg
loss, and HBeAg seroconversion were determined. In all, 146 patients met criteria for
inclusion in the entecavir long-term cohort. At Year 5, 94% (88/94) had HBV DNA <300
copies/mL and 80% (78/98) had normal ALT levels. In addition to patients who achieved
serologic responses during study ETV-022, 23% (33/141) achieved HBeAg seroconversion
and 1.4% (2/145) lost hepatitis B surface antigen (HBsAg) during study ETV-901. Through
5 years, entecavir resistance emerged in one patient. The safety profile of entecavir was
consistent with previous reports. Conclusion: Extended therapy with entecavir through 5
years maintained or increased rates of HBV DNA suppression and ALT normalization.
Additional patients also achieved HBeAg loss and seroconversion. Entecavir provides sustained
viral suppression with minimal resistance during long-term treatment of HBeAgpositive
CHB. (HEPATOLOGY 2010;51:422-430.)
HepatologyVolume 51, Issue 2, Article first published online: 4 JAN 2010
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