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Intragenic Deletion in the LIFR Gene in a Long-Term Survivor with Stüve-Wiedemann Syndrome

机译:Stüve-Wiedemann综合征的长期幸存者中 LIFR 基因的基因内缺失

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Stüve-Wiedemann syndrome (SWS, OMIM 601559) is a rare autosomal recessive bent-bone dysplasia, caused by loss-of-function mutations in the leukemia inhibitory factor receptor (LIFR) gene, which usually leads to early death. Only few patients with long-term survival have been described in the literature. We report on a 5-year-old boy from a consanguineous marriage with molecular analysis for the LIFR gene. Sanger and next-generation sequencing (NGS) of LIFR were performed. Copy number variation analysis with NGS showed a novel mutation as the cause for the syndrome: an intragenic homozygous deletion in LIFR, involving exons 15-20. Bridging PCR was carried out to confirm the intragenic deletion. This is the first description of a large deletion in LIFR, broadening the spectrum of mutations in SWS. Besides the reported allelic heterogeneity, further studies such as exome sequencing are required to identify a novel gene in order to confirm the locus heterogeneity in SWS.
机译:Stüve-Wiedemann综合征(SWS,OMIM 601559)是一种罕见的常染色体隐性隐性弯曲骨发育不良,由白血病抑制因子受体(LIFR)基因的功能丧失突变引起,通常会导致早期死亡。文献中仅描述了少数具有长期生存的患者。我们报告了一个近亲结婚的5岁男孩,并对其LIFR基因进行了分子分析。进行了LIFR的Sanger和下一代测序(NGS)。用NGS进行的拷贝数变异分析表明,该综合征是一种新的突变:LIFR中的一种基因内纯合缺失,涉及外显子15-20。进行桥接PCR以确认基因内缺失。这是对LIFR中大量缺失的首次描述,从而扩大了SWS中突变的范围。除了已报道的等位基因异质性,还需要进一步的研究(例如外显子组测序)来鉴定新基因,以确认SWS中的基因座异质性。

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