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基础科学和病原发生学

Myriam Fornage1, Rui Xia1, Tamar Sofer2,3

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概括
此摘要是机器生成的。

在西班牙裔/拉丁裔成年人中对大脑白质过强度 (WMH) 的遗传研究确定了已知的位置,并发现了新的位置. 这项研究强调了多样化人口在理解WMH遗传架构方面的重要性.

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科学领域:

  • 神经遗传学 神经遗传学
  • 人口遗传学 人口遗传学
  • 医疗成像医学成像

背景情况:

  • 大脑白质高强度 (WMH) 与认知衰退和痴呆症有关.
  • 遗传研究 (GWAS) 已经确定了WMH位点,但西班牙裔/拉丁裔人口的代表性不足.
  • 与非西班牙裔白人相比,西班牙裔/拉丁裔成年人患WMH的负担更高.

研究的目的:

  • 在多样化的西班牙裔/拉丁裔群体中描述WMH的遗传结构.
  • 调查已知WMH遗传位点的可转移性.
  • 通过利用西班牙裔/拉丁裔遗传多样性来识别新的WMH位点.

主要方法:

  • 对2159名西班牙裔/拉丁裔成年人进行了全基因组关联和混合物映射分析.
  • 研究了27个先前确定的WMH位点的关联.
  • 后分析将西班牙裔/拉丁裔GWAS结果与其他人口的现有GWAS数据结合起来.

主要成果:

  • 据估计,WMH的遗传率为29%.
  • 在27个已知的WMH位点中,有20个被发现具有可转移性的证据.
  • 在12q22 (rs10859915) 和14q13.2 (RALGAPA1) 分别通过多祖先元分析和混合物映射确定了一个新的位点.

结论:

  • 在其他种群中发现的WMH位点与西班牙裔/拉丁裔成年人有关.
  • 多样化的西班牙裔/拉丁裔人口对于精细地绘制已知的位置和发现新的位置是有价值的.
  • 这项研究增强了对大脑白质超强度的遗传结构的理解.