1. Comprehensive genetic exploration of skeletal dysplasia using targeted exome sequencing
- Author
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Hey Ran Lee, Soon Hyuck Lee, Hyun Woo Kim, Tae Joon Cho, Kun-Bo Park, Hae Ryong Song, Ha Yong Kim, Sang Cheol Kim, Nayoung K.D. Kim, Chin Youb Chung, In Ho Choi, Won Joon Yoo, Woong-Yang Park, Ok Hwa Kim, Moon Seok Park, Soonchul Lee, Jun Seok Bae, Chung Lee, and Changhoon Jeong
- Subjects
Male ,0301 basic medicine ,DNA Copy Number Variations ,DNA sequencing ,03 medical and health sciences ,symbols.namesake ,Exon ,Exome Sequencing ,Genotype ,medicine ,Humans ,Pathology, Molecular ,Gene ,Genetics (clinical) ,Exome sequencing ,Genetics ,Sanger sequencing ,business.industry ,food and beverages ,Exons ,medicine.disease ,Musculoskeletal Abnormalities ,Pedigree ,Phenotype ,030104 developmental biology ,Dysplasia ,Mutation ,Mendelian inheritance ,symbols ,Female ,business - Abstract
The purpose of this study was to evaluate the clinical utility of targeted exome sequencing (TES) as a molecular diagnostic tool for patients with skeletal dysplasia. A total of 185 patients either diagnosed with or suspected to have skeletal dysplasia were recruited over a period of 3 years. TES was performed for 255 genes associated with the pathogenesis of skeletal dysplasia, and candidate variants were selected using a bioinformatics analysis. All candidate variants were confirmed by Sanger sequencing, correlation with the phenotype, and a cosegregation study in the family. TES detected “confirmed” or “highly likely” pathogenic sequence variants in 74% (71 of 96) of cases in the assured clinical diagnosis category and 20.3% (13 of 64 cases) of cases in the uncertain clinical diagnosis category. TES successfully detected pathogenic variants in all 25 cases of previously known genotypes. The data also suggested a copy-number variation that led to a molecular diagnosis. This study demonstrates the feasibility of TES for the molecular diagnosis of skeletal dysplasia. However, further confirmation is needed for a final molecular diagnosis, including Sanger sequencing of candidate variants with suspected, poorly captured exons. Genet Med 18 6, 563–569.
- Published
- 2016
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