CIRC RES:目前很大法洛氏四联症队列的全外显子测序研究

2018-12-01 MedSci MedSci原创

罕见的遗传变异在先天性心脏病的发生中起到重要作用,但目前尚缺乏对散发性法洛氏四联症(TOF)的大型遗传研究。本研究的目的旨在通过全外显子测序(WES)对一个目前最大的散发性TOF队列进行遗传变异的研究。本研究对829名散发性TOF患者进行了WES测序,分析结果显示,NOTCH1 基因是最常见的变异基因,共在37个先证者中发现了31处变异(4.5%; 95% [CI]:3.2-6.1%),包括7个功

罕见的遗传变异在先天性心脏病的发生中起到重要作用,但目前尚缺乏对散发性法洛氏四联症(TOF)的大型遗传研究。本研究的目的旨在通过全外显子测序(WES)对一个目前最大的散发性TOF队列进行遗传变异的研究。

本研究对829名散发性TOF患者进行了WES测序,分析结果显示,NOTCH1 基因是最常见的变异基因,共在37个先证者中发现了31处变异(4.5%; 95% [CI]:3.2-6.1%),包括7个功能缺失突变和22个错义突变,并对三个突变(p.G200R, p.C607Y 和p.N1875S)进行了功能验证,发现其中2个突变降低了Jagged1-NOTCH1信号通路的活性。其次,在2.4%的患者中发现了FLT4 基因的突变,在21名患者中发现了22处有害突变。另外,除了NOTCH1 、FLT4 和已知的TBX1基因,本研究还筛选出了其他几个候选基因:RYR1, ZFPM1, CAMTA2, DLX6 和 PCM1。

研究结果显示,NOTCH1 基因是散发性法洛氏四联症最常见的变异基因,其次是FLT4 基因。

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