一般人群中脂肪肝疾病和死亡率的遗传风险:孟德尔的随机化研究
Helene Gellert-Kristensen1, Anne Tybjaerg-Hansen1,2,3,4, Børge G Nordestgaard2,3,4,5
1Department of Clinical Biochemistry, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
概括
脂肪肝是一种常见的疾病,是肝脏相关死亡的因果风险因素. 遗传分析证实,脂肪肝疾病显著增加了死于肝脏疾病的风险.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 遗传学 遗传学 是一个
- 流行病学 流行病学
背景情况:
- 在观察性研究中,脂肪肝疾病与因各种原因增加的死亡率有关.
- 脂肪肝疾病与死亡率之间的因果关系需要进一步调查.
研究的目的:
- 测试脂肪肝疾病是增加死亡率的因果风险因素的假设.
- 调查遗传代理性肝肥胖症与肝脏相关死亡率之间的关联.
主要方法:
- 在超过11万个个体中,基因定型了7种与脂肪肝疾病相关的遗传变异.
- 利用孟德尔的随机化框架来评估因果关系.
- 通过计算机断层扫描在参与者的子集中测量了肝肥胖症.
主要成果:
- 观察分析显示,血氨酸酶 (ALT) 的升高与较高的全因和肝脏相关死亡率有关.
- 在PNPLA3,TM6SF2和HSD17B13的遗传变异单独与肝脏相关死亡率的增加有关.
- 遗传代理性肝肥胖症和ALT升高与与肝脏相关的死亡率有因果关系.
结论:
- 人类遗传数据强烈支持脂肪肝疾病作为肝脏相关死亡的因果因素.
- 这项研究确立了脂肪肝疾病和肝脏特定死亡之间的因果关系.
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