在强迫症障碍中,罕见的副本数变异的负担
Matthew W Halvorsen1,2, Elles de Schipper3, Julia Bäckman3
1Department of Genetics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA. mhalvors@email.unc.edu.
Molecular psychiatry
|October 28, 2024
概括
罕见的副本数变异 (CNVs) 导致强迫症 (OCD) 风险,特别是不耐受基因的缺失. 这些遗传变异与伴随性自闭症和强迫症患者治疗反应的减少有关.
科学领域:
- 遗传学 是一个遗传学.
- 精神病学是一个精神病学.
- 基因组医学是基因组医学.
背景情况:
- 目前的强迫症 (OCD) 遗传研究重点是常见的单核酸变体 (SNV) 和罕见的编码SNV/indels.
- 罕见副本数变异 (CNVs) 在强迫症风险中的作用尚未在规模上进行广泛研究.
研究的目的:
- 评估罕见的CNVs对强迫症风险的贡献.
- 调查强迫症中CNVs和临床表型之间的关联.
主要方法:
- 从2248例强迫症病例和3608例对照中的基因型阵列数据分析罕见的CNV.
- 统计分析以确定病例与对照中的CNV负担,重点关注CNV≥30kb和重叠蛋白质编码区域.
主要成果:
- 强迫症病例显示CNV负担增加≥30kb (OR=1.12,P=1.77×10−3),主要是由蛋白质编码区域的CNV驱动的 (OR=1.19,P=3.08×10−4).
- 功能丧失不耐受基因的删除 (pLI>0.995) 与强迫症风险显著相关 (OR=4.12,P=2.54×10−5).
- 带有神经发育重复的CNV载体具有更高的并发性自闭症率 (P<0.001),而删除载体的治疗反应较低 (P=0.02).
结论:
- 罕见的CNVs有助于强迫症风险,特别是高度不耐受基因的缺失.
- 将罕见的CNV纳入遗传研究可以增加识别强迫症风险基因的能力.
- CNV与特定的临床特征有关,包括并发性自闭症和治疗反应.
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