临床荟萃 ›› 2021, Vol. 36 ›› Issue (9): 820-823.doi: 10.3969/j.issn.1004-583X.2021.09.011

• 论著 • 上一篇    下一篇

智力障碍/全面性发育迟缓遗传学诊断策略探讨

周有峰1, 黄艳1, 刘光华2()   

  1. 1. 福建省妇幼保健院儿科 福建医科大学附属医院,福建 福州 350001
    2. 福建医科大学临床医学部,福建省妇幼保健院儿科,福建 福州 350001
  • 收稿日期:2021-05-07 出版日期:2021-09-20 发布日期:2021-10-05
  • 通讯作者: 刘光华 E-mail:3477573@qq.com

Genetic diagnosis strategy in children with intellectual disability/global developmental delay

Zhou Youfeng1, Huang Yan1, Liu Guanghua2()   

  1. 1. Department of Pediatrics, Fujian Provincial Maternity and Children' Hospital, the Affiliated Hospital of Fujian Medical University, Fuzhou 350001, China
    2. Department of Clinical Medicine, Fujian Medical University, Department of Pediatrics, Fujian Provincial Maternity and Children' Hospital, Fuzhou 350001, China
  • Received:2021-05-07 Online:2021-09-20 Published:2021-10-05
  • Contact: Liu Guanghua E-mail:3477573@qq.com

摘要:

目的 探讨不明原因智力障碍/全面发育迟缓(ID/GDD)患儿遗传学检测策略。方法 收集65例ID/GDD患儿外周血样本,行拷贝数变异(CNVs)检测,阴性样本行家系全外显子测序(trio-WES)。比较CNVs阳性组与单核苷酸变异(SNV)阳性组表型差异。将样本分为单独检测组(CNV-seq)和联合检测组(CNV-seq联合trio-WES),比较二者阳性率差异。结果 联合检测组阳性率44.6%(29/65), 单独检测组阳性率33.8%(22/65),阳性率有显著性差异。结论 CNV-seq和trio-WES联合检测可提高阳性率。

关键词: 发育障碍, 染色质, 多态性, 单核苷酸, 外显子

Abstract:

Objective To explore the diagnostic strategy of genetics in children with unexplained intellectual disability/global developmental delay(ID/GDD). Methods The peripheral blood samples of 65 children with ID/GDD were collected and sequenced with CNV-seq. The negative samples were detected with trio-WES. The characteristics of clinical phenotype between CNVs positive group and SNV positive group were compared. The samples were divided into single detection group (CNV-seq) and combined detection group (CNV-seq combined with trio-WES), and the statistical significance of positive rate between two groups was compared. Results There was significant difference in positive rate between combined test group and single test group, 44.6%(29/65) vs 33.8%(22/65), respectively. Conclusion The combined detection of CNV-seq and trio-WES may increase the positive rate.

Key words: developmental disabilities, chromatin, polymorphism, single nucleotide, exomes

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