Molecular Genetics & Genomic Medicine最新文献

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Atypical Prader-Willi Syndrome Deletions: Insights Into the Complex Regulation and Phenotypic Variability. 非典型Prader-Willi综合征缺失:对复杂调控和表型变异的见解。
IF 1.6 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-08-01 DOI: 10.1002/mgg3.70131
Jannis Buecking, Christian P Schaaf
{"title":"Atypical Prader-Willi Syndrome Deletions: Insights Into the Complex Regulation and Phenotypic Variability.","authors":"Jannis Buecking, Christian P Schaaf","doi":"10.1002/mgg3.70131","DOIUrl":"https://doi.org/10.1002/mgg3.70131","url":null,"abstract":"","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 8","pages":"e70131"},"PeriodicalIF":1.6,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12365658/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144961958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Functional Characterization of a Novel Intronic Variant in PIEZO2 in a Recessive Form of Distal Arthrogryposis With Impaired Proprioception and Touch (DAIPT). 远端关节挛缩伴本体感觉和触觉受损(DAIPT)隐性形式中PIEZO2新内含子变异的功能表征。
IF 1.6 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-08-01 DOI: 10.1002/mgg3.70126
Michela Bellardita, Ferruccio Romano, Ludovica Menta, Joana Soraia Martinheira Da Silva, Marzia Ognibene, Simona Baldassari, Marco Di Duca, Chiara Panicucci, Serena Baratto, Noemi Brolatti, Marina Pedemonte, Chiara Fiorillo, Claudio Bruno, Marcello Scala, Federico Zara, Francesca Faravelli, Francesca Madia, Serena Cappato, Renata Bocciardi, Valeria Capra
{"title":"Functional Characterization of a Novel Intronic Variant in PIEZO2 in a Recessive Form of Distal Arthrogryposis With Impaired Proprioception and Touch (DAIPT).","authors":"Michela Bellardita, Ferruccio Romano, Ludovica Menta, Joana Soraia Martinheira Da Silva, Marzia Ognibene, Simona Baldassari, Marco Di Duca, Chiara Panicucci, Serena Baratto, Noemi Brolatti, Marina Pedemonte, Chiara Fiorillo, Claudio Bruno, Marcello Scala, Federico Zara, Francesca Faravelli, Francesca Madia, Serena Cappato, Renata Bocciardi, Valeria Capra","doi":"10.1002/mgg3.70126","DOIUrl":"10.1002/mgg3.70126","url":null,"abstract":"<p><strong>Background: </strong>Distal arthrogryposis with impaired proprioception and touch (DAIPT) is a rare autosomal recessive neurological disease characterized by progressive alteration of mechanosensation. DAIPT is caused by loss of function variants in the PIEZO2 gene that encodes an ionic channel involved in mechanotransduction signaling. Our study started from the case of an 11-year-old boy with skeletal and neuromuscular features suggestive of DAIPT.</p><p><strong>Methods: </strong>Exome sequencing was performed on the trio. The identified variants in PIEZO2 were validated by Sanger sequencing. Functional assays of the variants were performed by minigene assay in HEK-293 cells and on patient-derived cells using NMD inhibitors.</p><p><strong>Results: </strong>Trio exome sequencing revealed the presence of two novel variants in the PIEZO2 gene: a nonsense variant (c.1924G>T; p.Glu642*) and an intronic variant of uncertain significance (c.2170-15A>G). Functional analysis demonstrated that the intronic variant disrupts splicing, leading to premature stop codon formation and possible mRNA targeting to nonsense-mediated mRNA decay (NMD). Molecular study in patient-derived fibroblasts with specific NMD inhibitors shows that transcripts derived from both alleles are degraded by NMD, thus confirming the effect of the nonsense variant and enabling reclassification of the VUS.</p><p><strong>Conclusion: </strong>We present the phenotypic and genetic description of a patient with features suggestive of DAIPT carrying novel biallelic variants in PIEZO2, one of which could be reclassified as pathogenic after functional assays. This study also provides a detailed review of all the published patients with DAIPT and expands the phenotypic and genetic understanding of DAIPT, aiding in diagnosis, genetic counseling, and clinical management.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 8","pages":"e70126"},"PeriodicalIF":1.6,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12329762/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144794938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
B3GNT2, GPR35, PSMG1 Gene Polymorphisms Are Related With Susceptibility and Severity of Ankylosing Spondylitis in Chinese Han Population. B3GNT2、GPR35、PSMG1基因多态性与中国汉族强直性脊柱炎易感性和严重程度相关
IF 1.6 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-08-01 DOI: 10.1002/mgg3.70125
Zijian Lian, Bin Zhao, Wei Luo, Jun Liu, Jing Wang, Wei Chai, Yan Wang, Songqing Ye, Xinlong Ma
{"title":"B3GNT2, GPR35, PSMG1 Gene Polymorphisms Are Related With Susceptibility and Severity of Ankylosing Spondylitis in Chinese Han Population.","authors":"Zijian Lian, Bin Zhao, Wei Luo, Jun Liu, Jing Wang, Wei Chai, Yan Wang, Songqing Ye, Xinlong Ma","doi":"10.1002/mgg3.70125","DOIUrl":"10.1002/mgg3.70125","url":null,"abstract":"<p><strong>Background: </strong>Latest research on ankylosing spondylitis (AS) indicates a link between the B3GNT2, PSMG1 genes and susceptibility to AS among western populations. However, the association of these three genes with AS in eastern populations remains insufficiently explored. It is necessary to replicate these studies in other populations. Consequently, we chose tagSNPs in these three genes in the Chinese Han population to be sequenced.</p><p><strong>Purpose: </strong>We tried to find the SNP loci that are associated in both eastern and western populations through repeated experiments. Furthermore, our research extended to examining the link between these genes and the severity of AS. This study aimed to evaluate the association between the tagSNPs of B3GNT2 (rs10865331, rs6545925, rs467250), the rs4676410 SNP on GPR35, and the rs4816648 SNP of PSMG1 with AS susceptibility and disease activity in a Chinese Han population.</p><p><strong>Method: </strong>We collected blood samples from 497 patients with AS and 498 control subjects and sequenced 5 tagSNPs in B3GNT2, 1 tagSNP in GPR35, and 6 tagSNPs in PSMG1.</p><p><strong>Result: </strong>Within the five selected tagSNPs of B3GNT2, the rs10865331, rs6545925, and rs4672501 tagSNPs are associated with susceptibility to AS. Additionally, the rs4672501 SNP is not only associated with susceptibility to AS, but also with the severity of AS. For the first time, we find that the rs4676410 SNP on the GPR35 gene is associated with susceptibility to AS, but not associated with the severity of AS in the Chinese Han population. We find for the first time that the rs4816648 SNP of the PSMG1 gene is associated with both susceptibility and severity of ankylosing spondylitis.</p><p><strong>Conclusion: </strong>B3GNT2 and PSMG1 genes are related to both susceptibility and severity of AS. The GPR35 gene is related to susceptibility to AS in the Chinese Han population, which corroborates the findings of research conducted in western populations.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 8","pages":"e70125"},"PeriodicalIF":1.6,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12308515/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Yield of Genetic Testing in Pediatric Cardiomyopathies: Implications for Novel Therapeutic Options. 儿童心肌病基因检测的产量:对新的治疗选择的意义。
IF 1.5 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70119
Adelaide Ballerini, Francesca Girolami, Alessia Gozzini, Silvia Passantino, Mattia Zampieri, Alberto Marchi, Alessia Tomberli, Giovanni B Calabri, Gaia Spaziani, Giulio Porcedda, Elena Bennati, Silvia Favilli, Iacopo Olivotto
{"title":"Yield of Genetic Testing in Pediatric Cardiomyopathies: Implications for Novel Therapeutic Options.","authors":"Adelaide Ballerini, Francesca Girolami, Alessia Gozzini, Silvia Passantino, Mattia Zampieri, Alberto Marchi, Alessia Tomberli, Giovanni B Calabri, Gaia Spaziani, Giulio Porcedda, Elena Bennati, Silvia Favilli, Iacopo Olivotto","doi":"10.1002/mgg3.70119","DOIUrl":"10.1002/mgg3.70119","url":null,"abstract":"<p><p>Pediatric cardiomyopathies are rare, heterogeneous, and challenging conditions, often with a genetic etiology. We estimated the yield of genetic testing in a pediatric cohort with cardiomyopathies and evaluated the potential candidacy to current or emerging treatments based on genetic results. Over one-third had a conclusive genetic test, including 25% of potential candidates for emerging precision therapies or developing pharmacological options.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 7","pages":"e70119"},"PeriodicalIF":1.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12246793/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144608856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization of Variants of Uncertain Significance in ACADVL Gene From a Very-Long-Chain Acyl-CoA Dehydrogenase Deficiency Patient. 超长链酰基辅酶a脱氢酶缺乏症患者ACADVL基因不确定意义变异的特征
IF 1.5 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70120
Qin Wang, Jingxin Yang, Yong Xu, Xingping Li, Nan Jiang, Jiansheng Xie
{"title":"Characterization of Variants of Uncertain Significance in ACADVL Gene From a Very-Long-Chain Acyl-CoA Dehydrogenase Deficiency Patient.","authors":"Qin Wang, Jingxin Yang, Yong Xu, Xingping Li, Nan Jiang, Jiansheng Xie","doi":"10.1002/mgg3.70120","DOIUrl":"10.1002/mgg3.70120","url":null,"abstract":"<p><strong>Background: </strong>Very-long-chain acyl-CoA dehydrogenase deficiency (VLCADD) is a rare disorder of long-chain mitochondrial fatty acid oxidation (FAO) caused by biallelic mutations in the acyl-CoA dehydrogenase very-long-chain (ACADVL) gene with autosomal recessive (AR) inheritance. Currently, the ACADVL gene has over 350 VUSs in the ClinVar database that require characterization to determine potential pathogenicity.</p><p><strong>Methods: </strong>In this study, we performed functional studies and three-dimensional protein structure analysis to identify the pathogenicity of two ACADVL VUSs in a Chinese VLCADD patient with severe clinical symptoms.</p><p><strong>Results: </strong>Biallelic variants in ACADVL gene c.1055T>C (p.Met352Thr) and c.1269G>A (p.Ser423=) were identified by whole-genome sequencing (WGS) and confirmed using Sanger sequencing. Both variants were recorded in ClinVar database with \"conflicting interpretation of its pathogenicity\" and need appropriate evidence for reclassification to guide family reproductive planning. Synonymous variant p.Ser423= could result in skipping of exon 12 through mini-gene splicing experiment testing. Further functional studies reveal that both variants yield a mild-to-severe decrease in ACADVL mRNA and protein expression in vitro.</p><p><strong>Conclusion: </strong>In this study, we determined the pathogenicity of ACADVL variants c.1055T>C (p.Met352Thr) and c.1269G>A (p.Ser423=) via experimental and in silico analysis. The findings contribute to expanding the variant spectrum in the ACADVL gene, and exploring the pathogenicity of VUS may provide us with further understanding of the disease.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 7","pages":"e70120"},"PeriodicalIF":1.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12272298/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144659698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electronic Patient Portals as a Modality for Returning Reclassified Genetic Test Results. 电子患者门户作为返回重新分类的基因测试结果的一种方式。
IF 1.5 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70123
Sukh Makhnoon, MinJae Lee, Mujeeb Basit, Cindy Kao, Sun Won Min, Christine Mai, Alexa Badalamenti, Jacqueline Mersch
{"title":"Electronic Patient Portals as a Modality for Returning Reclassified Genetic Test Results.","authors":"Sukh Makhnoon, MinJae Lee, Mujeeb Basit, Cindy Kao, Sun Won Min, Christine Mai, Alexa Badalamenti, Jacqueline Mersch","doi":"10.1002/mgg3.70123","DOIUrl":"10.1002/mgg3.70123","url":null,"abstract":"<p><strong>Background: </strong>Most reclassified genetic test results are clinically inactionable and burdensome for healthcare providers to return to patients. The feasibility of using electronic patient portals (e.g., MyChart) to return reclassified results remains unclear.</p><p><strong>Methods: </strong>Patient and provider initiated MyChart actions were obtained from MyChart data and matched to patient demographic and clinical information using unique patient medical record numbers. Data on who (patient or provider) sent and read these messages and when (date and time) were collected for clinically actionable and inactionable reclassifications.</p><p><strong>Results: </strong>Among 801 patients with 828 reclassified variants in cancer susceptibility genes, 551 had an active MyChart account at the time of reclassification. Patients with active MyChart accounts were less likely to be Hispanic (p < 0.001) compared to other ethnic groups. Of these, 302 (55%) were notified about 308 reclassified results (307 inactionable and 1 actionable) via MyChart messages, and 80% (244/302) read the message within a median time of 3.6 h.</p><p><strong>Conclusion: </strong>We find that it is feasible to return reclassified results via electronic patient portals for most patients, but alternative modalities are still necessary. Unidirectional, low-touch modalities of recontact can be used to efficiently return the increasing number of inactionable reclassified results.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 7","pages":"e70123"},"PeriodicalIF":1.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12277930/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144675310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Biallelic Mutations in the Otogelin-Like Gene (OTOGL) Associated With Congenital Non-Syndromic Sensorineural Hearing Loss in a Chinese Family. 一个中国家庭先天性非综合征性感音神经性听力损失相关耳胶蛋白样基因(OTOGL)双等位基因突变
IF 1.5 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70122
Xiang Dai, Jun Li, Xijiang Hu, Wenqian Cai
{"title":"Biallelic Mutations in the Otogelin-Like Gene (OTOGL) Associated With Congenital Non-Syndromic Sensorineural Hearing Loss in a Chinese Family.","authors":"Xiang Dai, Jun Li, Xijiang Hu, Wenqian Cai","doi":"10.1002/mgg3.70122","DOIUrl":"10.1002/mgg3.70122","url":null,"abstract":"<p><strong>Background: </strong>Hearing loss, characterized by significant genetic heterogeneity, is a widespread global disorder. Mutations in the OTOG and OTOGL genes have recently been implicated in non-syndromic sensorineural hearing loss. However, the mutation spectrum of OTOGL and its functional relevance remain incompletely understood.</p><p><strong>Methods: </strong>We investigated a Chinese family with unexplained hearing loss using whole-exome sequencing. Compound heterozygous mutations in the OTOGL gene were identified and validated through Sanger sequencing. The proband's clinical features were assessed through audiological evaluations, and genotype-phenotype correlation analysis was conducted. Additionally, single-cell RNA sequencing analysis of the inner ear was performed to explore OTOGL's expression profile in auditory-related cell types.</p><p><strong>Results: </strong>Two compound heterozygous mutations in the OTOGL gene (p.Ile34Val and p.Phe319del) were identified in the proband, a 6-year-old boy with moderate congenital hearing loss. These mutations are predicted to be pathogenic and may explain the observed phenotype. Single-cell RNA sequencing revealed specific OTOGL expression in key auditory-related cell types, providing insights into its developmental and functional roles in the inner ear.</p><p><strong>Conclusion: </strong>The findings have marked implications for molecular diagnosis and genetic counseling, potentially guiding more personalized treatment and intervention strategies in clinical practice.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 7","pages":"e70122"},"PeriodicalIF":1.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12274630/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144667946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three Siblings With an Attenuated Presentation of Perlman Syndrome: A Case Report and Literature Review. 三个兄弟姐妹有减弱的帕尔曼综合征的表现:一个病例报告和文献复习。
IF 1.6 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70124
Alayne P Meyer, Daniel C Koboldt, Swetha Ramadesikan, Kristin Zajo, Maria E Hernandez Gonzalez, Anthony R Miller, Douglas Depoorter, Catherine P Comer, James I Geller, Katherine Somers, Nilay Shah, Marco L Leung
{"title":"Three Siblings With an Attenuated Presentation of Perlman Syndrome: A Case Report and Literature Review.","authors":"Alayne P Meyer, Daniel C Koboldt, Swetha Ramadesikan, Kristin Zajo, Maria E Hernandez Gonzalez, Anthony R Miller, Douglas Depoorter, Catherine P Comer, James I Geller, Katherine Somers, Nilay Shah, Marco L Leung","doi":"10.1002/mgg3.70124","DOIUrl":"10.1002/mgg3.70124","url":null,"abstract":"<p><strong>Introduction: </strong>Perlman syndrome is a rare autosomal recessive overgrowth disorder with a predisposition to Wilms tumor, caused by biallelic variants in DIS3L2. The majority of patients die in infancy due to respiratory and/or renal failure, limiting the reports of patients surviving into childhood.</p><p><strong>Methods: </strong>Exome sequencing was performed in the proband and her older brother. A younger sibling subsequently underwent targeted variant analysis. RNA sequencing was utilized to investigate the functional impact of the missense variant.</p><p><strong>Results: </strong>Three siblings presented at birth with fetal macrosomia, dysmorphic facial features, and facial hypotonia. The proband had early speech delay and was diagnosed with Wilms tumor at 3 years old. Her brothers both had developmental delay presenting within the first year of life. Genetic testing identified compound heterozygous variants in DIS3L2 (NM_152383.5): c.127C>T (p.Arg43Ter) (paternal)/c.2381G>A (p.Arg794His) (maternal).</p><p><strong>Conclusion: </strong>Our findings expand the genetic and clinical spectrums associated with Perlman syndrome and increase the understanding of the phenotype observed in childhood. They also support consideration of genetic testing for Perlman syndrome in individuals and sibships with macrosomia, developmental delay, and characteristic facial dysmorphisms, with or without the presence of Wilms tumor.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 7","pages":"e70124"},"PeriodicalIF":1.6,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12288098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144699091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Novel Loss of Function Variant in SOST From Chinese Family Results in Sclerosteosis 1. 中国SOST家族新功能缺失变异导致硬化症
IF 1.5 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70109
Yufan Guo, Xintao Wu, Yuting Jin, Yu Gu, Yuting Lou, Pu Miao, Ye Wang, Bijun Zhang, Xueting Lin, Chudi Zhang, Jianhua Feng
{"title":"Novel Loss of Function Variant in SOST From Chinese Family Results in Sclerosteosis 1.","authors":"Yufan Guo, Xintao Wu, Yuting Jin, Yu Gu, Yuting Lou, Pu Miao, Ye Wang, Bijun Zhang, Xueting Lin, Chudi Zhang, Jianhua Feng","doi":"10.1002/mgg3.70109","DOIUrl":"10.1002/mgg3.70109","url":null,"abstract":"<p><strong>Background: </strong>SOST encodes a secreted glycoprotein that is similar in sequence to the differential screening-selected gene aberrative in neuroblastoma (DAN) family of bone morphogenetic protein (BMP) antagonists. Pathogenic variants in the SOST gene result in sclerosteosis, van Buchem disease (VBD), or craniodiaphyseal dysplasia. SOST-related genetic disorders are very rare, and limited studies have reported variants associated with sclerosteosis.</p><p><strong>Methods: </strong>Clinical tests such as magnetic resonance imaging (MRI), computed tomography (CT), emission computed tomography (ECT), electromyogram (EMG), routine blood tests, and physical examinations were conducted for the proband. Trio-whole exome sequencing (Trio-WES) was performed, and the rare variants (allele frequency < 0.01) in the exon and splicing regions were selected for further pathogenic evaluation. Candidate pathogenic variants were validated through Sanger sequencing. The wild and mutant SOST sequences were cloned into the pcDNA3.1 expression vector, and the RNA and protein expression levels were investigated in the HEK293T cell line.</p><p><strong>Results: </strong>In this study, we present a case study of a proband who displays abnormal facial expressions accompanied by numbness. The results of the brain MRI show thickening of the skull and disappearance of the diplopia signal. The temporal bone CT scan indicates diffuse osteosclerosis affecting the bilateral ossicular chains and internal auditory meatus, as well as stenosis of the bilateral internal auditory meatus. Trio-WES sequencing detected a novel homozygous variant in the proband: NM_025237.3(SOST): c.327C>A (p.Cys109*), which was also validated in his sister from the same family. According to the ACMG guidelines, the variant is classified as \"likely pathogenic.\" The in vitro experiments demonstrated that the variant caused a decrease in SOST expression at RNA and protein level and produced a truncated protein.</p><p><strong>Conclusion: </strong>The report presents new evidence for the clinical diagnosis of SOST-related facial numbness and expands the variant spectrum of SOST.</p>","PeriodicalId":18852,"journal":{"name":"Molecular Genetics & Genomic Medicine","volume":"13 7","pages":"e70109"},"PeriodicalIF":1.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12222177/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Novel Intronic Mutation in MBD5 Results in Autosomal Dominant Intellectual Disability Type 1 due to Abnormal Splicing. 一个新的内含子突变MBD5导致常染色体显性智力残疾1型由于异常剪接。
IF 1.6 4区 医学
Molecular Genetics & Genomic Medicine Pub Date : 2025-07-01 DOI: 10.1002/mgg3.70121
Heng Jiang, Jingjing Mou, Qiwei Zhao, Long Ding, Yu Wang, Xiaohong Guo, Guohua Yang
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