在自闭症中表型和祖先相关的分类交配
Jing Zhang1,2,3, J Dylan Weissenkampen1, Rachel L Kember4
1Department of Genetics, University of Pennsylvania, Philadelphia, PA, USA.
Molecular autism
|June 14, 2024
概括
自闭症的各种交配模式对于智力障碍或没有智力障碍的人来说是相似的. 遗传因素解释了不到5%的这种交配模式,这表明其他因素也在发挥作用.
科学领域:
- 神经科学是一个神经科学.
- 遗传学 遗传学 是一个
- 精神病学是一个精神病学.
背景情况:
- 在神经精神疾病,包括自闭症谱系障碍 (ASD) 中观察到正分类交配 (AM).
- 目前尚不清楚AM模式是否在自闭症子组之间存在差异,例如具有或没有智力障碍 (ID) 的自闭症子组.
- 父母之间遗传相似性的贡献和AM在自闭症中对人口水平的影响需要进一步研究.
研究的目的:
- 调查自闭症子组中各种交配 (AM) 模式的差异.
- 确定由自闭症儿童父母的遗传相似性解释的表型AM的比例.
- 评估AM对自闭症人口遗传结构的影响.
主要方法:
- 分析了两个大型以家庭为基础的自闭症队伍:西蒙斯基金会推动自闭症知识研究 (SPARK) 和西蒙斯简单集合 (SSC).
- 在被诊断为自闭症儿童的父母身上检查表型和祖先相关的AM.
- 对自闭症多基因分数 (PGS) 的评估,以评估对AM的遗传贡献.
主要成果:
- 现型和祖先相关的AM在自闭症儿童的父母中是一致的,无论智力障碍 (ID) 状态如何.
- 根据自闭症多基因分数 (PGS) 检测出没有显著的AM证据 (我认为我有 > 0.1).
- 与祖先相关的AM和自闭症PGS解释了观察到的表型AM的最小比例 (0.3-4%),与祖先相关的AM增加了长距离链接不平衡 (LD).
结论:
- 自闭症的各种交配 (AM) 模式在智力障碍 (ID) 和没有智力障碍 (ID) 的子组中是相似的.
- 共同的遗传影响似乎与这两个自闭症群体有关.
- 该研究强调,与祖先相关的AM和多基因得分解释了表型AM的一小部分,这表明其他因素有很大贡献. 需要进一步研究诱导的远程LD的影响.
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