摘要目的:报告9例遗传性椭圆形红细胞增多症（hereditary elliptocytosis，HE）患者基因突变类型并分析HE致病性基因突变的特征。方法:报告中国医学科学院血液病医院2018年6月至2022年2月临床诊断的9例HE患者临床及基因突变特征，应用Sanger测序方法进行验证，分析基因突变构成、突变类型、基因型及与临床表型之间的关系。结果:9例HE患者中6例为SPTA1、1例为SPTB、1例为EPB41红细胞膜蛋白基因突变，另1例为20号染色体拷贝缺失。共涉及11个基因突变位点，包括6个已知突变和5个新发突变。5个新发突变分别为：SPTA1基因9号外显子c.1247A>C（p.K416T），15号外显子c.1891delG（p.A631fs*17），6~12号外显子Del；SPTB基因c.154C>T（p.R52W）；EPB41基因c.1636A>G（p.I546V）。6例SPTA1突变患者中3例为SPTA1 9号外显子突变。结论:SPTA1是HE患者最常见的突变基因。

abstractsObjective:To report gene mutations in nine patients with hereditary elliptocytosis (HE) and analyze the characteristics of pathogenic gene mutations in HE.Methods:The clinical and gene mutations of nine patients clinically diagnosed with HE at Institute of Hematology & Blood Diseases Hospital from June 2018 to February 2022 were reported and verified by next-generation sequencing to analyze the relationship between gene mutations and clinical phenotypes.Results:Erythrocyte membrane protein gene mutations were detected among nine patients with HE, including six with SPTA1 mutation, one with SPTB mutation, one with EPB41 mutation, and one with chromosome 20 copy deletion. A total of 11 gene mutation sites were involved, including 6 known mutations and 5 novel mutations. The five novel mutations included SPTA1: c.1247A>C (p. K416T) in exon 9, c.1891delG (p. A631fs*17) in exon 15, E6-E12 Del; SPTB: c.154C>T (p. R52W) ; and EPB41: c.1636A>G (p. I546V) . Three of the six patients with the SPTA1 mutation were SPTA1 exon 9 mutation.Conclusion:SPTA1 is the most common mutant gene in patients with HE.