在IL28B的遗传变异预测C型肝炎治疗诱导的病毒清除
Dongliang Ge1, Jacques Fellay, Alexander J Thompson
1Institute for Genome Sciences & Policy, Center for Human Genome Variation, Duke University, Durham, North Carolina 27708, USA.
Nature
|August 18, 2009
概括
在IL28B基因附近的基因标记物显著影响C型肝炎病毒 (HCV) 治疗成功. 这一发现有助于解释为什么一些患者对基于干扰素的疗法比其他人更有反应.
科学领域:
- 遗传学 是一个遗传学.
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
背景情况:
- 慢性型肝炎病毒 (HCV) 感染影响全球1.7亿人,导致肝硬化.
- 目前的治疗方法,如干扰素和利巴维林,有效性有限,耐受性差.
- 欧洲和非洲血统的患者之间存在治疗结果的显著差异.
研究的目的:
- 确定影响对HCV治疗反应的遗传决定因素.
- 了解不同人群中差异化治疗成功率的基础.
主要方法:
- 在IL28B基因附近的特定多态的基因型分析.
- 在欧洲和非洲裔美国人队伍中,统计学关联研究将基因型与治疗反应相关联.
主要成果:
- 在IL28B基因附近的遗传多态性,编码干扰素-lambda-3 (IFN-lambda-3),与治疗反应密切相关.
- 这种多态性使得欧洲和非裔美国患者的治疗疗效变化大约增加了两倍.
- 在欧洲人群中有利基因型的较高频率解释了约一半的观察到的基于祖先的响应率差异.
结论:
- IL28B遗传多态是HCV治疗结果的关键预测因素.
- 这一发现对个性化医疗和理解C型肝炎治疗中的种族差异有意义.
- 需要进一步研究IFN-lambda-3在HCV病原和治疗中的作用.
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