靶向基因高通量测序技术诊断儿童基因组病的可行性研究
网络出版日期: 2016-10-31
基金资助
国家自然科学基金（81201353，81371903，81472051）；上海市科委国际合作项目（15410722800）；上海市教育委员会高峰高原学科建设计划（20152529）
Feasibility study of the targeted next-generation sequencing technology in the diagnosis of childrens genomic disease
1.Department of Medical Genetics (Molecular Diagnostic Laboratory), Shanghai Childrens Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; 2.Department of Clinical Laboratory, Tongren Hospital, Shanghai 200336, China; 3. Department of Endocrine and Genetic Metabolic, Shanghai Childrens Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai 200127, China; 4.Department of Gene Diagnostic Laboratory, Boston Childrens Hospital, Harvard Medical School, Boston 02115, USA
Online published: 2016-10-31
Supported by
National Natural Science Foundation of China, 81201353， 81371903， 81472051; Project of Science and Technology Commission of Shanghai Municipality, 15410722800; Shanghai Municipal Education Commission—Gaofeng Clinical Medicine Grant Support， 20152529
目的·对10例临床怀疑基因组病的患儿进行临床分子诊断，初步探讨靶向基因高通量测序技术检测拷贝数变异(CNVs)的可行性。方法·对患儿进行外周血DNA靶向高通量测序，通过生物信息学分别分析其基因组CNVs，确定致病CNVs位点及大小，同时使用染色体基因芯片技术作为对照方法检测CNVs。结果·靶向测序分析结果表明：在其中1个患儿基因组的17号染色体q25.1—q25.3区域存在9 345 kb的重复（3个拷贝），而另1个患儿基因组中存在15号染色体q11.2—q13.1区域的8 232 kb的杂合缺失，其余8例患儿基因组未见可疑CNVs。染色体基因芯片检测结果与高通量测序结果相比高度一致。 结论·借助于分子诊断技术，2名患儿被确诊为基因组病。临床应用靶向基因高通量测序技术检测CNVs完全具有可行性。
张欢欢 , 李牛 , 郁婷婷 , 姚如恩 , 卿艳荣 , 王秀敏 , 沈亦平 , 王剑 . 靶向基因高通量测序技术诊断儿童基因组病的可行性研究[J]. 上海交通大学学报（医学版）, 2016 , 36(9) : 1301 . DOI: 10.3969/j.issn.1674-8115.2016.09.009
Objective·To perform clinical molecular diagnosis for 10 Chinese children with highly-suspected genomic disorders and to evaluate the feasibility of next generation sequencing (NGS) with target capture library in decteting copy number variants (CNVs). Methods·All the patients were evaluated by NGS with SureSelect Inherited Diseases library. The location and size of pathogenic CNVs were identified through bioinformatics analysis. Meanwhile, chromosome microarray analysis (CMA) was used to verify these CNVs. Results·NGS results showed that a 9 345 kb duplication (3 copies) in 17q25.1—q25.3 was detected in chromosome 17 of case 1 and a 8 232 kb heterozygous deletion in 15q11.2—q13.1 was detected in chromosome 15 of case 2. No suspicious CNVs were identified in other 8 cases. The CMA testing results were highly consistent with those of NGS. Conclusion·Two patients were diagnosed with genomic disorders by molecular diagnosis approach. Our research indicates that targeted NGS technique is quite feasible for CNV detection.
/
| 〈 |
|
〉 |