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Sustained serological and complete responses in HBeAg-positive patients treated with Peginterferon alfa-2b: a 6-year long-term follow-up of a multicenter, randomized, controlled trial in China.

Sun, Jian; Ding, Huiguo; Chen, Guofeng; Wang, Guiqiang; Wei, Lai; Zhang, Jiming; Xie, Qing; Wan, Mobin; Tang, Hong; Chen, Shijun; Gao, Zhiliang; Wang, Yuming; Zhang, Dazhi; Huang, Wenxiang; Sheng, Jifang; Ning, Qin; Yang, Dongliang; Lu, Jian; Pan, Chen; Yang, Yuxiu; Wang, Jue; Sun, Chuanzhen; Wang, Qixin; Hou, Jinlin.
BMC Gastroenterol; 19(1): 65, 2019 May 02.
Artigo em Inglês | MEDLINE | ID: mdl-31046700

BACKGROUND:

Pegylated interferon (PEG-IFN) alfa-2b is recommended for chronic hepatitis B (CHB). We aimed to investigate the sustainability of off-treatment responses among Chinese HBeAg-positive CHB patients treated with PEG-IFN alfa-2b from a randomized trial.

METHODS:

Eligible Chinese patients (n = 322) were followed up by one visit after a median of 6 years (LTFU) following their participation in a randomized trial evaluating the efficacy of three PEG-IFN alfa-2b dosing regimens (1.0 or 1.5 µg/kg/wk. 24 weeks or 1.5 µg/kg/wk. 48 weeks). Primary endpoints at the LTFU were sustained SR and CR (SR/CR at the end of original study [EOS] and at the LTFU). SR was defined as HBeAg loss and seroconversion to anti-HBe and CR as HBeAg loss and seroconversion to anti-HBe and HBV-DNA < 2000 IU/mL.

RESULTS:

The proportions of patients achieving sustained SR among patients who had SR at EOS were high in three treatment groups (61.9, 65.5, 76.5%, respectively, p = 0.46); treatment with PEG-IFN alfa-2b 1.5 µg/kg/wk. 48 weeks had the highest proportion of a sustained CR among patients who had CR at EOS (75.0%, p = 0.05). A considerable number of patients achieved sustained SR (18.2-29.9%) and sustained CR (14.8-18.3%) after EOS despite no further NA treatment. At the LTFU, rates of SR and CR were less than 70.0 and 50.0%, respectively, among all enrolled patients regardless of additional nucleos(t)ide analogs before the LTFU.

CONCLUSIONS:

PEG IFN alfa-2b therapy had considerable off-treatment sustainability in Chinese HBeAg positive chronic hepatitis B patients with serological and complete responses.
Selo DaSilva