多多基因分数预测数学,阅读和语言能力,独立于一般认知能力
Francesca Procopio1, Wangjingyi Liao2, Kaili Rimfeld3,4
1Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK. francesca.procopio@kcl.ac.uk.
Molecular psychiatry
|July 31, 2024
概括
遗传因素影响特定的认知能力 (SCA) 超出一般认知能力 (g). 这项研究量化了独立于g (SCA.g) 的SCA遗传性,并使用全基因组多基因分数 (多PGS) 预测了这些能力.
科学领域:
- 行为遗传学 行为遗传学
- 认知神经科学 认知神经科学
- 心理测量 心理测量 心理测量
背景情况:
- 特定认知能力 (SCA) 与一般认知能力 (g) 有遗传相关性,这表明有共同的遗传影响.
- 了解独立于g的SCA遗传基础对于准确的基因组预测至关重要.
- 以前的研究表明,SCA和g之间存在大量的遗传重叠,因此需要方法来解开这些影响.
研究的目的:
- 使用双胞胎和DNA数据调查独立于g (SCA.g) 的数学,阅读和语言能力的遗传性.
- 评估多个全基因组多基因分数 (多个PGS) 对SCA.g的预测能力,与未对g进行校正的SCA相比.
- 提供证据,证明SCA的遗传性估计不仅仅归因于g.
主要方法:
- 利用双胞胎早期发育研究 (TEDS) 的数据,包括12岁时5000对双胞胎的认知测试结果.
- 用单变异双胞胎分析和全基因组SNP基因型计算SCA和SCA.g的遗传性.
- 从至少50个个别的PGS开发了多个PGS,并使用弹性净处罚回归来预测SCA和SCA.g.
主要成果:
- 通过双胞胎分析,SCA.g的平均遗传率估计为40% (相对于SCA的53%),通过SNP遗传率,SCA.g的平均遗传率为26% (相对于SCA的35%).
- 多个PGS解释了SCA.g的4.4%的变异,而SCA未经g校正的比例为11.1%.
- 从双胞胎,SNP和PGS数据对SCA.g的遗传概率估计支持这些能力的遗传特异性超出g.
结论:
- 特定认知能力的遗传性并不能完全由一般认知能力来解释.
- 全基因组多基因分数可以预测特定的认知能力独立于g,尽管与SCA相比精度降低.
- 鼓励对SCA和SCA进行进一步的全基因组关联研究,以改善对认知优缺点的PGS预测.
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