恩替卡韦片治疗拉米夫定失效HBeAg
[摘要] 目的 评价恩替卡韦片(etv)1.0 mg/d治疗拉米夫定(lam)失效的hbeag阳性慢性乙型肝炎患者的疗效和安全性。 方法 随机、有限的(12周)双盲、安慰剂对照、多中心临床研究。筛选合格的慢性乙型肝炎患者按照2:1的随机比例,分为etv+lam→etv组;etv 1.0mg/d联合lam 100 mg/d,治疗12周后改为单用etv 1.0 mg/d治疗36周,共41例;安慰剂+lam→etv组:安慰剂1.0mg/d联合lam100mg/d,治疗12周后,改为单用etv 1.0mg/d,治疗36周,共18例。 结果 12周双盲治疗结束时,etv+lam→etv 组患者血清中hbv dna 水平与基线相比的平均下降量(2.69 lg 拷贝/ml)、hbv dna<5 lg拷贝/ml的患者比例(92.7%)、与基线相比下降≥2 lg拷贝/ml的患者比例(78.1%)明显高于安慰剂+lam→etv 组(1.06 lg 拷贝/ ml、33.3%、27.8%),p=0.00。两组患者继续治疗,病毒学、血清学和生化学应答均有进一步改善。两组的不良事件发生率及其种类差异无统计学意义。治疗48周内未发现rtn236t和rta181v突变。 结论 etv 1.0mg/d具有明显抗lam失效的hbv株复制作用,且随着治疗时间延长作用增强,其安全性与安慰剂相似。
[关键词] 肝炎,乙型,慢性; 肝炎e抗原,乙型;恩替卡韦
a clinical study of entecavir in treating lamivudine refractory hbeag-positive chronic hepatitis b.
[abstract] ive to evaluate the efficacy and safety of entecavir(etv) in treating patients with lamivudine (lam) refractory hbeag-positive chronic hepatitis b. methods it is a randomized,double-blind,placebo-controlled, multicenter study.226 eligible patients with hbeag-positive chronic hepatitis b were randomized (randomization ratio was 2:1) into two groups. one group received etv 1.0 mg/d and lam 100 mg/d for 12 weeks and followed by etv 1.0 mg/d for 36 weeks (etv+lam→etv group); the other received placebo and lam 100 mg/d for 12 weeks and followed by etv 1.0 mg/d for 36 weeks (etv+lam→group ); the other received placebo and lam 100 mg/d for 12 weeks and followed by etv 1.0mg/d for 36 weeks (placebo+lam→etv group). the primary effcacy measure was virological response. the secondary efficacy measure was serological response (hbeag loss rate and hbeag seroconversion rtate )and alt normalizaition rate. results after 12 weeks of therapy,mean reduction of hbv dna level, the percentage of patients with hbv dna lower than 5 lg copies/ml and the percentage of patients with hbv dna level decrease of more than 2 lg copies/ml in patients of etv+lam→etv group were significantly higher than those in patients of placebo+lam→etv group (2.69 lg copies/ml vs、1.06 lg copies/ml,92.7% vs. 33.3%, 78.1% vs. 27.8% ),all the p values were 0.00. hbv dna undetectable (<3 lg copies/ml) rate and serological response (hbeag loss rate and hbeag seroconversion rate )in patients of etv+lam→etv group was slightly higher than those in patients of placebo+lam→etv group (12.2% vs 5.6%,5.1% vs 0,4.9% vs 0), but did not reach statistical signifcance. much more patients in both treatment arms achieved virological response, serological response and alt normalization after another 36 weeks of therapy. the overall safety profile of etv was similar to that of placebo. rtn236t and rta181v mutation was not found in this 48-week study. conclusion etv is an effective and well-tolerated treatment option for patients with lam refractory hbeag-positive chronic hepatitis b.
[key words] hepatitis b, chronic; hepatitis b&
恩替卡韦片治疗拉米夫定失效HBeAg
本文2013-06-17 17:13:19发表“医学论文”栏目。
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