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漳州市233例新生儿葡萄糖-6-磷酸脱氢酶缺乏症基因突变分析

Analysis on Gene Mutation of 233 neonates with Glucose-6-phosphate dehydrogenase deficiency in Zhangzhou

  • 摘要: 目的 了解漳州市新生儿葡萄糖-6-磷酸脱氢酶(glucose-6-phosphate dehydrogenase,G6PD)缺乏症患者的基因突变类型,分析各突变型的发生率。方法 利用荧光分析法对出生在漳州市的新生儿进行G6PD缺乏症筛查;对初筛阳性的233例新生儿用时间飞行质谱生物芯片系统(Massarray)检测常见突变位点;对未检测出常见突变的样本采用Sanger测序技术进行基因检测。结果 在漳州地区的46 540例样本中,G6PD缺乏症初筛阳性的共1415例,男女阳性率分别为4.31%(1077/24 947)和1.57%(338/21 593),男女阳性率比较差异有统计学意义(P<0.05)。在233例初筛阳性样本中,使用Massarray技术检测出10种常见突变,包括c.1376G>T (102例)、c.1388G>A (40例)、c.871G>A (11例)、c.1024C>T (10例)、c.392G>T (9例)、c.95A>G (7例)、c.1360C>T (4例)、c.487G>A (3例)、c.1004C>T (1例)、c.563C>T (1例),其中复合突变c.1024C>T/c.1376G>T及c.1376G>T/c.1388G>A各1例;Sanger测序检出4种突变,包括c.305T>C (2例)、c.187G>A (1例)、c.77G>T (1例)、c.486-34del T (4例);其余35例未检测出基因突变。结论 本研究共检测出14种G6PD基因突变,c.1376G>T和c.1388G>A占71.72%,是漳州市新生儿G6PD缺乏症最常见的基因突变类型,且在G6PD缺乏症中首次报道了c.305T>C和c.187G>A突变类型。

     

    Abstract: Objective The aim of the study is to investigate the mutation types and their incidence of the glucose-6-phosphate dehydrogenase (G6PD) deficiency in neonates of Zhangzhou.Methods Neonates who were born in Zhangzhou area were screened for G6 PD deficiency by fluorescence spot test.233 positive cases in preliminary screening of G6 PD deficiency was detected common sites by Massarray method.Sanger sequencing was used to identify gene mutation types in samples that common mutation was not detected.Results Among the 46540 cases in Zhangzhou,1415 samples were found G6 PD deficiency in preliminary screening,The positive rates of males and females were 4.31%(1077/24947) and 1.57%(338/21593) respectively,and the difference was statistically significant (P<0.05).Among the 233 G6 PD deficiency positive cases in preliminary screening,10 kinds of mutation were found by Massarray method:c.1376 G > T (102 cases),c.1388 G > A (40 cases),c.871 G > A (11 cases),c.1024 C > T (10 cases),c.392G> T (9 cases),c.95 A > G (7 cases),c.1360 C > T (4 cases),c.487 G > A (3 cases),c.1004 C > T (1 case),c.563 C > T (1 case),c.1024 C > T combined with c.1376 G > T (1 case),c.1376 G > T combined with c.1388 G > A (1 case),and 4 additional mutations was found by Sanger sequencing:c.305 T > C (2 cases),c.187 G > A (1 case),c.77 G > T (1 case),c.486-34 del T (4 cases).No mutation was found in the other 35 neonates.Conclusion In this study,14 kinds mutation of G6 PD were found,c.1376 G > T and c.1388 G > A accounted for 71.72% and were the most common mutations in Zhangzhou area.c.305 T > C and c.187 G > A are novel mutations,which is the first study to report in G6 PD deficiency.

     

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