A case of Wiskott-Aldrich syndrome caused by WASP gene mutation and literature review
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摘要: 目的:分析1例Wiskott-Aldrich综合征患儿的临床特征、基因突变及蛋白表达。方法:总结患儿的临床特征,提取患儿外周血基因组DNA,针对WASP基因所有编码外显子及外显子和内含子交界处进行PCR扩增测序,并采用流式细胞术(FCW)检测WASP表达。结果:本例患儿具有典型的WAS表型,并伴有自身抗体ANA阳性,临床评分为3分。患儿为WASP基因第8外显子剪接位点突变:c.777+1G>A,编码蛋白质终止于aa246;FCW检测WASP表达阴性。结论:本例男性Wiskott-Aldrich综合征患儿具有典型的WAS表型与自身抗体阳性的临床特点,其发病是由少见的WASP基因剪接位点突变所致。
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关键词:
- Wiskott-Aldrich综合征 /
- 基因 /
- 突变 /
- DNA序列
Abstract: Objective:To explore the clinical characteristics,genetic mutations and protein expression of a patient with Wiskott-Aldrich syndrome (WAS).Method:The clinical features of a boy suffering from WAS were analyzed.DNA samples were obtained from the peripheral blood of patient.All the exons and intron-exon boundaries of the WASP gene were analyzed by the polymerase chain reaction(PCR) and sequencing;WASP expression was detected by Flow cytometry(FCW).Result:The case had a classical WAS phenotype and positive antibody to nuclear antigen (ANA);his clinical score was 3;Sequencing revealed a splice site mutation in exon8 of WASP gene,c.777+1G>A,and this mutation led to premature translational termination at amino acid position 246;FCW analysis revealed that WASP was negative.Conclusion:The boy with classical WAS phenotype and positive ANA results from the rare splice site mutation of WASP gene.-
Key words:
- wiskott-aldrich syndrome /
- gene /
- mutation /
- DNA sequence
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