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通过使用一种名为PECAN的新的共识管道,调查精神分裂症血统中的副本数量变异

Cathal Ormond¹, Niamh M Ryan¹, William Byerley²

¹Neuropsychiatric Genetics Research Group, Department of Psychiatry, Trinity Centre for Health Sciences, Trinity College Dublin, James' Street, Dublin 8, Ireland.

Scientific reports

|July 30, 2024

概括

作为一种全基因组测序管道,PECAN准确地识别了人类疾病中的副本数变异 (CNV). 在一项家庭研究中,它成功地确定了与精神分裂症相关的罕见删除.

科学领域:

基因组学就是基因组学.
人类遗传学人类遗传学
生物信息学是一种生物信息学.

背景情况:

副本数变异 (CNVs) 与各种人类疾病有关,包括精神疾病.
全基因组测序 (WGS) 与基于数组的方法相比,提供了优越的副本数变异 (CNV) 检测.
准确的CNV鉴定对于了解疾病机制至关重要.

研究的目的:

引入PECAN (PEdigree复制号 vAriaNt调用),一个强大而透明的CNV调用管道,用于短读WGS数据.
通过整合多种方法和血统信息来增强CNV呼叫,以提高准确性和可扩展性.
在精神分裂症患者中识别与疾病相关的CNV.

主要方法:

PECAN 结合了四个 CNV 调用算法和结构变异基因型识别以进行全面分析.
该管道包括血统数据,以保留低信任的CNV.
性能与黄金标准CNV调用NA12878和HG002参考样本进行了比较.

主要成果:

在基准测试中,PECAN表现出高精度和回忆,优于现有的基于血统的CNV呼叫器.
为NA12878样本提供了高可信度黄金标准CNV的精选列表.
在一个家族中发现了一种罕见的与精神分裂症共分离的删除,重叠PITRM1基因.

结论:

PECAN是WGS数据中CNV检测的可扩展和准确的工具,对于基于家庭的研究特别有价值.
在PITRM1中发现的删除提供了与精神分裂症和相关的神经现象类型的潜在遗传联系.
这项工作为CNV调用提供了宝贵的资源,并突出了针对精神分裂症的新型候选基因.

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