遗传PURA病原体变异与轻度神经发育障碍相关
Michael S Hildebrand1, Ruth O Braden1, Mariana L Lauretta1
1From the Epilepsy Research Centre (M.S.H., I.E.S.), Department of Medicine, The University of Melbourne, Austin Health, Heidelberg; Neuroscience Group (M.S.H., R.J.L., I.E.S.); Speech and Language (R.O.B., M.L., A.T.M.), Murdoch Children's Research Institute, Royal Children's Hospital, Parkville; Department of Audiology and Speech Pathology (R.O.B., M.L., A.T.M.), The University of Melbourne, Carlton; Population Health and Immunity Division (A.K., M.B.), The Walter and Eliza Hall Institute of Medical Research; Department of Medical Biology (A.K., M.B.), The University of Melbourne; Department of Paediatrics (R.J.L., I.E.S., D.J.A.), The University of Melbourne; Department of Neurology (M.S.H., R.J.L., I.E.S., D.J.A.), Royal Children's Hospital, Parkville; PURA Foundation Australia Ltd (M.A.), Plenty, Victoria; Hunter Genetics (H.G.), John Hunter Hospital, New Lambton Heights, New South Wales; The Florey Institute (I.E.S.); Neurodisability and Rehabilitation Group (D.J.A.), Murdoch Children's Research Institute, Royal Children's Hospital, Parkville, Victoria, Australia; and Institute of Structural Biology (R.J., D.N.), Helmholtz Zentrum Muenchen-German Research Centre for Environmental Health, Neuherberg, Germany.
一种新的PURA基因变异导致一种罕见的遗传神经发育障碍,包括严重的语言障碍和边缘智力障碍. 这一发现扩大了对PURA综合征的理解,并为受影响家庭的遗传测试提供了指导.
科学领域:
- 遗传学 是一个遗传学.
- 神经发育障碍 神经发育障碍
- 分子生物学分子生物学
背景情况:
- 富含纯素的元素结合蛋白α (PURA) 对于基因调节至关重要,特别是在神经组织中.
- 病原性PURA变异导致PURA综合征,这是一个神经发育障碍,具有多种症状,包括全球发育迟缓和智力障碍.
- 在PURA综合征中,特定的语言表型的特征仍然很差.
研究的目的:
- 在没有中度或重度智力障碍的儿童中,确定严重的初级语言障碍的遗传原因.
- 描述与新型遗传PURA基因变异相关的表型.
主要方法:
- 基因组测序被用来识别致病基因变异.
- 进行了分离分析,以确认变种在家族内的遗传模式.
主要成果:
- 在PURA基因中发现了一种新的致病性误解变异,c.296G>T (p.Arg99Leu),在母亲和女儿身上被识别和分离.
- 受影响的个体呈现出失联症,严重的受体和表达性语言障碍,边缘智力和异形特征.
- 这代表了第一个报告的遗传PURA致病性生殖系变异.
结论:
- 这些发现突出了一个与独特的神经发育表型相关的新型遗传PURA变异,包括主要语音障碍和边缘智力障碍.
- 应该考虑在家庭中进行PURA基因测试,这些家庭有不明原因的原发性语言障碍和边缘智力障碍.
- 这一发现对遗传咨询和了解PURA综合征的谱系有重大影响.
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