Discovery of a novel CHD7 CHARGE syndrome variant by integrated omics analyses.
Discovery of a novel CHD7 CHARGE syndrome variant by integrated omics analyses.
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通过整合组学分析发现一种新的CHD7 CHARGE综合征变体
DOI:
10.1002/ajmg.a.61962
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发表时间:
2021-03
期刊:
影响因子:
--
通讯作者:
Undiagnosed Diseases Network
中科院分区:
文献类型:
--
作者:
Granadillo JL;Wegner DJ;Paul AJ;Willing M;Sisco K;Tedder ML;Sadikovic B;Wambach JA;Baldridge D;Cole FS;Undiagnosed Diseases Network
CHD7 pathogenic variants are identified in more than 90% of infants and children with CHARGE syndrome. Approximately 10% of cases have no known genetic cause identified. We report a male child with clinical features of CHARGE syndrome and non-diagnostic genetic testing that included chromosomal microarray, CHD7 sequencing and deletion/duplication analysis, SEMA3E sequencing, and trio Exome and Whole Genome Sequencing. We used a comprehensive clinical assessment, genome-wide methylation analysis (GMA), reanalysis of Whole Genome Sequencing (WGS) data, and CHD7 RNA studies to discover a novel variant that causes CHD7 haploinsufficiency. The 7-year-old Hispanic male proband has typical phenotypic features of CHARGE syndrome. GMA revealed a CHD7-associated epigenetic signature. Reanalysis of the WGS data with focused bioinformatic analysis of CHD7 detected a novel, de novo 15 base pair deletion in intron 4 of CHD7, (c.2239–20_2239–6delGTCTTGGGTTTTTGT (NM_017780.3)). Using proband RNA, we confirmed that this novel deletion causes CHD7 haploinsufficiency by disrupting the canonical 3’ splice site and introducing a premature stop codon. Integrated genomic, epigenomic, and transcriptome analyses discovered a novel CHD7 variant that causes CHARGE syndrome.
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通讯作者:
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DOI:
10.1016/j.tig.2015.05.009
发表时间:
2015-10
期刊:
Trends in genetics : TIG
影响因子:
--
作者:
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通讯作者:
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