在秘鲁的一项基于人口的病例控制研究中,对早产和妊娠年龄的遗传关联研究
D L Juvinao-Quintero1, S E Sanchez2,3, T Workalemahu4
1Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Journal of neonatal-perinatal medicine
|September 20, 2024
概括
这项针对秘鲁妇女的全基因组研究发现了早产 (PTB) 和妊娠年龄 (GA) 的遗传信号,但与欧洲的发现没有重叠. 一个遗传风险得分预测了更长的GA.
科学领域:
- 遗传学 遗传学 是一个
- 生殖健康 生殖健康
- 人口研究 人口研究
背景情况:
- 过早出生 (PTB) 影响全球数百万人,遗传关联在很大程度上仅限于欧洲人口.
- 之前对PTB的遗传研究已经产生了不确定的结果,缺乏多样性.
- 这项研究解决了在代表性不足的人群中对PTB和妊娠年龄 (GA) 的遗传洞察的需求.
研究的目的:
- 在秘鲁妇女中进行PTB和GA全基因组关联研究 (GWAS).
- 在非欧洲队列中识别与PTB和GA相关的新型遗传标记.
- 探索已识别的遗传信号的功能途径,并试图复制欧洲发现.
主要方法:
- 在2212名秘鲁妇女身上进行了GWAS,分析了大约600万个单核酸多态 (SNP).
- PTB病例被定义为怀孕20周至37周之间的分娩;对照在预期期 (37-42周) 进行分娩.
- 多变量回归调整为母亲的年龄和主要遗传成分,与顶部信号的in silico功能分析.
主要成果:
- 对于PTB或GA,没有发现全基因组显著的关联.
- 标称PTB变体在与多基化物,孕,类固醇激素和糖代谢相关的途径中得到了丰富.
- 复制了以前与欧洲人GA相关的WNT4变异;遗传风险得分预测了2天更长的GA (P=0.002).
结论:
- 在秘鲁妇女中发现了与PTB和GA的遗传关联.
- 在已识别的变种和之前在欧洲人群中报告的变种之间没有发现重叠.
- 这些发现突出了可能影响怀孕结果的人口特异性遗传因素.
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