J HEPATOL:博赛泼维药物组合治晚期纤维化/肝硬化安全有效

2012-12-11 J HEPATOL J HEPATOL

       源自丙型肝炎病毒(HCV)基因1型的晚期纤维化/肝硬化的患者,对聚乙二醇干扰素-利巴韦林联合博赛泼维(Boceprevir)有时会有持续的病毒学应答(SVR),早期结果可以反映应答,研究人员报道。        布鲁诺博士在电子邮件写道:“大多数肝硬化患者(METAVIR评分分级 F4),HCV

       源自丙型肝炎病毒(HCV)基因1型的晚期纤维化/肝硬化患者,对聚乙二醇干扰素-利巴韦林联合博赛泼维(Boceprevir)有时会有持续的病毒学应答(SVR),早期结果可以反映应答,研究人员报道。

       布鲁诺博士在电子邮件写道:“大多数肝硬化患者(METAVIR评分分级 F4),HCV感染最难以治疗的一部分,可通过博赛泼维三联疗法有效地治愈。”而且,导入阶段应答可以帮助预测病人的风险:效益比,布鲁诺博士和同事在审查两项随机试验数据后明确。

       试验最初包括1500例患者,11月23日发表在肝脏学杂志上的新的研究报告[J Hepatol 2012 Nov 23]最终包括178例Metavir评分F3或F4的患者。患者先前没有治疗,或治疗失败,所有患者接受4周的聚乙二醇干扰素/利巴韦林导入治疗。之后,他们继续聚乙二醇干扰素/利巴韦林44周,加安慰剂,博赛泼维使用应答引导疗法,或直接给博赛泼维。

       在应答指导组,治疗的时间是预先确定的,即那些在8周检测不到HCV-RNA的患者,有机会获得更短的治疗。在安慰剂组,在导入阶段终点HCV-RNA下降低于1-log10的患者中,没有人达到持续的SVR。然而,在博赛泼维组中,类似患者的SVR率分别为:F3患者—11%~33%;F4患者—10%~14%。高基线病毒载量的博赛泼维患者(大于2×106IU/mL),整体SVR率只有6%。

       作者指出,该研究对预测这些人群的SVR率提供了重要的新信息。

       与只使用干扰素和利巴韦林48周的SVR率50%相比,4周的导入治疗后HCV RNA下降1-log10或更多的晚期纤维化/肝硬化患者,在完成44周的三联疗法后,SVR率是77-87%。

       在那些8周检测不到HCV RNA的患者中(相当于4周的三联疗法),博赛泼维应答引导组SVR率79~80%;直接博赛泼维给药组SVR率90 ~93%。研究人员得出结论,“早期病毒动力学可以用来预测肝硬化患者对治疗的应答”。

       4周的干扰素和利巴韦林加44周博赛泼维的长期治疗似乎提供了最大的效益。此外,调查人员说,4周的引导治疗后,HCV-RNA log下降的程度提供了重要的信息,确定了是否启动第一代蛋白酶抑制剂治疗对每个病人的益处大于风险。”



Background and Aims
We assessed the safety and efficacy of boceprevir (BOC) plus peginterferon-ribavirin (PR) in patients with HCV-G1 infection and advanced fibrosis/cirrhosis (Metavir F3/F4).
Methods
In two randomized controlled studies in previously untreated and previous treatment-failures, patients received a 4-week lead-in of PR followed by PR plus placebo for 44 weeks (PR48); PR plus BOC using response guided therapy (BOC/RGT); or PR plus BOC for 44 weeks (BOC/PR48).
Results
The trials enrolled 178 patients with F3/4. HCV-RNA levels at week 4 and 8 were highly predictive of response. No patient with F3/4 in the PR48 arm with a <1-log10 decline in HCV-RNA at week 4 achieved SVR, whereas those randomized to BOC/RGT or BOC/PR48 had SVR rates of 11-33% (F3) and 10-14% (F4). In these latter groups, patients with high baseline viral load (>2 X 106 IU/mL) had an overall SVR rate of 6% (2/33). For patients with a 1-log10 decline at week 4, SVR rates in the BOC/PR48 arm of SPRINT-2 and RESPOND-2, respectively, were 77% and 87% vs. 18% and 50% for PR48; SVR rates in early responders (undetectable HCV RNA at week 8) were 90-93% in the BOC/PR48 arm. Neutropenia and thrombocytopenia were more common in cirrhotics than non-cirrhotics.
Conclusions
BOC improved SVR rates in patients with F3/4, and longer treatment duration provides the most benefit. With triple therapy, SVR rates are modest in F4 patients with a <1-log10 decline at week 4, thus the 4-week PR lead-in aids in the assessment of early futility.

肝硬化相关的拓展阅读:

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    2012-12-12 gwc384