{"title":"[Cohen syndrome in a child caused by compound heterozygous variants in <i>VPS13B</i> gene].","authors":"Xin Mei, Xiao-Liang He, Wei-Na Gao, Meng-Yao Wang, Jing-Wen Shen, Jing Wei, Yun Xue","doi":"10.7499/j.issn.1008-8830.2412119","DOIUrl":null,"url":null,"abstract":"<p><p>A 7-year-old girl was admitted to the hospital with rapidly progressive vision loss. Since 1 year of age, she had exhibited developmental delay accompanied by visual impairment and neutropenia. Combined with genetic testing and molecular pathogenicity analysis, she was diagnosed with Cohen syndrome (CS) caused by compound heterozygous variants in <i>VPS13B</i> (c.6940+1G>T and c.2911C>T). The c.6940+1G>T variant resulted in exon 38 skipping, leading to a frameshift and premature termination. Reverse transcription quantitative polymerase chain reaction revealed significantly reduced <i>VPS13B</i> gene expression (<i>P</i><0.05). Bioinformatic analysis suggested that both variants likely produce truncated proteins. This case highlights that integrating clinical features with molecular pathogenicity assessment (DNA, RNA, and protein analysis) can improve early diagnostic accuracy for CS.</p>","PeriodicalId":39792,"journal":{"name":"中国当代儿科杂志","volume":"27 6","pages":"740-745"},"PeriodicalIF":0.0000,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"中国当代儿科杂志","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.7499/j.issn.1008-8830.2412119","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Medicine","Score":null,"Total":0}
引用次数: 0
Abstract
A 7-year-old girl was admitted to the hospital with rapidly progressive vision loss. Since 1 year of age, she had exhibited developmental delay accompanied by visual impairment and neutropenia. Combined with genetic testing and molecular pathogenicity analysis, she was diagnosed with Cohen syndrome (CS) caused by compound heterozygous variants in VPS13B (c.6940+1G>T and c.2911C>T). The c.6940+1G>T variant resulted in exon 38 skipping, leading to a frameshift and premature termination. Reverse transcription quantitative polymerase chain reaction revealed significantly reduced VPS13B gene expression (P<0.05). Bioinformatic analysis suggested that both variants likely produce truncated proteins. This case highlights that integrating clinical features with molecular pathogenicity assessment (DNA, RNA, and protein analysis) can improve early diagnostic accuracy for CS.
中国当代儿科杂志Medicine-Pediatrics, Perinatology and Child Health
CiteScore
1.50
自引率
0.00%
发文量
5006
期刊介绍：
The Chinese Journal of Contemporary Pediatrics (CJCP) is a peer-reviewed open access periodical in the field of pediatrics that is sponsored by the Central South University/Xiangya Hospital of Central South University and under the auspices of the Ministry of Education of China. It is cited as a source in the scientific and technological papers of Chinese journals, the Chinese Science Citation Database (CSCD), and is one of the core Chinese periodicals in the Peking University Library. CJCP has been indexed by MEDLINE/PubMed/PMC of the American National Library, American Chemical Abstracts (CA), Holland Medical Abstracts (EM), Western Pacific Region Index Medicus (WPRIM), Scopus and EBSCO. It is a monthly periodical published on the 15th of every month, and is distributed both at home and overseas. The Chinese series publication number is CN 43-1301/R；ISSN 1008-8830. The tenet of CJCP is to “reflect the latest advances and be open to the world”. The periodical reports the most recent advances in the contemporary pediatric field. The majority of the readership is pediatric doctors and researchers.
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