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Goudarzi Y, Monirvaghefi K, Aghaei S, Amiri SS, Rezaei M, Dehghanitafti A, Azarpey A, Azani A, Pakmehr S, Eftekhari HR, Tahmasebi S, Zohourian Shahzadi S, Rajabivahid M. Effect of genetic profiling on surgical decisions at hereditary colorectal cancer syndromes. Heliyon 2024; 10:e34375. [PMID: 39145015 PMCID: PMC11320152 DOI: 10.1016/j.heliyon.2024.e34375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 07/06/2024] [Accepted: 07/09/2024] [Indexed: 08/16/2024] Open
Abstract
Hereditary colorectal cancer syndromes, such as Lynch syndrome and familial adenomatous polyposis (FAP), present significant clinical challenges due to the heightened cancer risks associated with these genetic conditions. This review explores genetic profiling impact on surgical decisions for hereditary colorectal cancer (HCRC), assessing options, timing, and outcomes. Genotypes of different HCRCs are discussed, revealing a connection between genetic profiles, disease severity, and outcomes. For Lynch syndrome, mutations in the MLH1, MSH2, MSH6, and PMS2 genes guide the choice of surgery. Subtotal colectomy is recommended for patients with mutations in MLH1 and MSH2, while segmental colectomy is preferred for those with MSH6 and PMS2 mutations. In cases of metachronous colon cancer after segmental colectomy, subtotal colectomy with ileorectal anastomosis is advised for all mutations. Surgical strategies for primary rectal cancer include anterior resection or abdominoperineal resection (APR), irrespective of the specific mutation. For rectal cancer occurring after a previous segmental colectomy, proctocolectomy with ileal pouch-anal anastomosis (IPAA) or APR with a permanent ileostomy is recommended. In FAP, surgical decisions are based on genotype-phenotype correlations. The risk of desmoid tumors post-surgery supports a single-stage approach, particularly for certain APC gene variants. Juvenile Polyposis Syndrome (JPS) surgical decisions involve genetic testing, polyp characteristics with attention to vascular lesions in SMAD4 mutation carriers. However, genetic profiling does not directly dictate the specific surgical approach for JPS. In conclusion this review highlights the critical role of personalized surgical plans based on genetic profiles to optimize patient outcomes and reduce cancer risk. Further research is needed to refine these strategies and enhance clinical guidelines.
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Affiliation(s)
- Yasaman Goudarzi
- Department of Medical Science, Shahroud Branch, Islamic Azad University, Iran
| | - Khaterehsadat Monirvaghefi
- Department of Adult Hematology & Oncology, School of Medicine, Ayatollah Khansari Hospital, Arak University of Medical Sciences, Arak, Iran
| | - Salar Aghaei
- Faculty of Medicine, Medical University of Kurdistan, Sanandaj, Iran
| | - Seyed Siamak Amiri
- Department of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Mahdi Rezaei
- Clinical Research Department, Pasteur Institute of Iran, Tehran, Iran
| | - Atefeh Dehghanitafti
- Department of General Surgery, School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Ali Azarpey
- Emory University School of Medicine, Atlanta, GA, USA
| | - Alireza Azani
- Department of Medical Genetics, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | | | - Hamid Reza Eftekhari
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Safa Tahmasebi
- Student Research Committee, Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Mansour Rajabivahid
- Department of Internal Medicine, Valiasr Hospital, Zanjan University of Medical Sciences, Zanjan, Iran
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Abedini SS, Akhavantabasi S, Liang Y, Heng JIT, Alizadehsani R, Dehzangi I, Bauer DC, Alinejad-Rokny H. A critical review of the impact of candidate copy number variants on autism spectrum disorder. MUTATION RESEARCH. REVIEWS IN MUTATION RESEARCH 2024; 794:108509. [PMID: 38977176 DOI: 10.1016/j.mrrev.2024.108509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 04/14/2024] [Accepted: 07/02/2024] [Indexed: 07/10/2024]
Abstract
Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder (NDD) influenced by genetic, epigenetic, and environmental factors. Recent advancements in genomic analysis have shed light on numerous genes associated with ASD, highlighting the significant role of both common and rare genetic mutations, as well as copy number variations (CNVs), single nucleotide polymorphisms (SNPs) and unique de novo variants. These genetic variations disrupt neurodevelopmental pathways, contributing to the disorder's complexity. Notably, CNVs are present in 10 %-20 % of individuals with autism, with 3 %-7 % detectable through cytogenetic methods. While the role of submicroscopic CNVs in ASD has been recently studied, their association with genomic loci and genes has not been thoroughly explored. In this review, we focus on 47 CNV regions linked to ASD, encompassing 1632 genes, including protein-coding genes and long non-coding RNAs (lncRNAs), of which 659 show significant brain expression. Using a list of ASD-associated genes from SFARI, we detect 17 regions harboring at least one known ASD-related protein-coding gene. Of the remaining 30 regions, we identify 24 regions containing at least one protein-coding gene with brain-enriched expression and a nervous system phenotype in mouse mutants, and one lncRNA with both brain-enriched expression and upregulation in iPSC to neuron differentiation. This review not only expands our understanding of the genetic diversity associated with ASD but also underscores the potential of lncRNAs in contributing to its etiology. Additionally, the discovered CNVs will be a valuable resource for future diagnostic, therapeutic, and research endeavors aimed at prioritizing genetic variations in ASD.
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Affiliation(s)
- Seyedeh Sedigheh Abedini
- UNSW BioMedical Machine Learning Lab (BML), The Graduate School of Biomedical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia; School of Biotechnology & Biomolecular Sciences, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Shiva Akhavantabasi
- Department of Molecular Biology and Genetics, Yeni Yuzyil University, Istanbul, Turkey; Ghiaseddin Jamshid Kashani University, Andisheh University Town, Danesh Blvd, 3441356611, Abyek, Qazvin, Iran
| | - Yuheng Liang
- UNSW BioMedical Machine Learning Lab (BML), The Graduate School of Biomedical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Julian Ik-Tsen Heng
- Curtin Health Innovation Research Institute, Curtin University, Bentley 6845, Australia
| | - Roohallah Alizadehsani
- Institute for Intelligent Systems Research and Innovation (IISRI), Deakin University, Victoria, Australia
| | - Iman Dehzangi
- Center for Computational and Integrative Biology, Rutgers University, Camden, NJ 08102, USA; Department of Computer Science, Rutgers University, Camden, NJ 08102, USA
| | - Denis C Bauer
- Transformational Bioinformatics, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Sydney, Australia; Applied BioSciences, Faculty of Science and Engineering, Macquarie University, Macquarie Park, Australia
| | - Hamid Alinejad-Rokny
- UNSW BioMedical Machine Learning Lab (BML), The Graduate School of Biomedical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia; Tyree Institute of Health Engineering (IHealthE), UNSW Sydney, Sydney, NSW 2052, Australia.
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Xu H, Jiang Y, Lu Y, Hu Z, Du R, Zhou Y, Liu Y, Zhao X, Tian Y, Yang C, Zhang Z, Qiu M, Wang Y. Thiram exposure induces tibial dyschondroplasia in broilers via the regulation effect of circ_003084/miR-130c-5p/BMPR1A crosstalk on chondrocyte proliferation and differentiation. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133071. [PMID: 38008051 DOI: 10.1016/j.jhazmat.2023.133071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 10/20/2023] [Accepted: 11/21/2023] [Indexed: 11/28/2023]
Abstract
Thiram, an agricultural insecticide, has been demonstrated to induce tibial dyschondroplasia (TD) in avian species. Circular RNA (circRNAs), a novel class of functional biological macromolecules characterized by their distinct circular structure, play crucial roles in various biological processes and diseases. Nevertheless, the precise regulatory mechanism underlying non-coding RNA involvement in thiram-induced broiler tibial chondrodysplasia remains elusive. In this study, we established a broiler model of thiram exposure for 10 days to assess TD and obtain a ceRNA network by RNA sequencing. By analyzing the differentially expressed circRNAs network, we id entify that circ_003084 was significantly upregulated in TD cartilage. Elevated circ_003084 inhibited TD chondrocytes proliferation and differentiation in vitro but promote apoptosis. Mechanistically, circ_003084 competitively binds to miR-130c-5p and prevents miR-130c-5p to decrease the level of BMPR1A, which upregulates the expression of apoptosis genes Caspase 3, Caspase 9, Bax and Bcl2, and finally facilitates cell apoptosis. Taken together, these findings imply that circ_003084/miR-130c-5p/BMPR1A interaction regulated TD chicken chondrocyte proliferation, apoptosis, and differentiation. This is the first work to reveal the mechanism of regulation of circRNA-related ceRNA on thiram-induced TD, offering a key reference for environmental toxicology.
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Affiliation(s)
- Hengyong Xu
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuru Jiang
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuxiang Lu
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhi Hu
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Ranran Du
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yuxin Zhou
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yiping Liu
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoling Zhao
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China
| | - Yaofu Tian
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China
| | - Chaowu Yang
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu 610066, China
| | - Zengrong Zhang
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu 610066, China
| | - Mohan Qiu
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu 610066, China
| | - Yan Wang
- Key Laboratory of Livestock and Poultry Multi-omics, Ministry of Agriculture and Rural Affairs, College of Animal and Technology (Institute of Animal Genetics and Breeding), Sichuan Agricultural University, Chengdu 611130, China; Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; State Key Laboratory of Swine and Poultry Breeding Industry, Sichuan Agricultural University, Chengdu 611130, China.
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Papadopulos ME, Plazzer JP, Macrae FA. Genotype-phenotype correlation of BMPR1a disease causing variants in juvenile polyposis syndrome. Hered Cancer Clin Pract 2023; 21:12. [PMID: 37400896 DOI: 10.1186/s13053-023-00255-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 06/07/2023] [Indexed: 07/05/2023] Open
Abstract
BACKGROUND Juvenile Polyposis Syndrome (JPS) is an autosomal dominant condition with hamartomatous polyps in the gastrointestinal tract, associated with an increased risk of gastrointestinal malignancy. Disease causing variants (DCVs) in BMPR1a or SMAD4 account for 45-60% of JPS cases, with BMPR1a DCVs accounting for 17-38% of JPS cases. Within those with either a BMPR1a or SMAD4 DCV, there is phenotypic variability in location of polyps, risk of malignancy and extra-intestinal manifestations with limited published reports of gene-phenotype association or genotype-phenotype correlation. We aimed to identify any gene-phenotype association or genotype-phenotype correlation in BMPR1a to inform surveillance recommendations, and gene-specific modification to the ACMG classification of pathogenicity of DCVs. METHODS A literature search was performed through EMBASE, MEDLINE and PubMed. Studies that were included explored BMPR1a DCV-related JPS or contiguous deletion of PTEN and BMPR1a. Data was also drawn from the BMPR1a specific databases on LOVD and ClinVar. RESULTS There were 211 DCVs in BMPR1a identified, 82 from patients with JPS in the literature, and 17 from LOVD and 112 from ClinVar classified as pathogenic or likely pathogenic. These included missense, nonsense and frameshift variants and large deletions, occurring across all functional domains of the gene. Unlike in SMAD4 carriers, gastric polyposis and malignancy were not identified in our review in BMPR1a carriers, but colonic polyposis and malignancy occurred in carriers of either BMPR1a or SMAD4 DCVs. Those with contiguous deletion of PTEN and BMPR1a can present with JPS of infancy, with a severe phenotype of GI bleeding, diarrhoea, exudative enteropathy and rectal prolapse. No specific BMPR1a genotype-phenotype correlation could be ascertained including by variant type or functional domain. CONCLUSION Phenotypic characteristics cannot be used to inform variant location in BMPR1a. However, the phenotypic characteristics of BMPR1a DCV carriers, being almost exclusively related to the colon and rectum, can assist in pathogenicity assessment of BMPR1a variants. Given these findings, we propose that carriers of BMPR1a DCVs should only require surveillance for colorectal polyps and malignancy, and that surveillance for gastric polyps and malignancy may be unnecessary. However variant location within BMPR1a does not support differential surveillance recommendations.
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Affiliation(s)
- M E Papadopulos
- Department of Medicine, University of Melbourne, The Royal Melbourne Hospital, Melbourne, Australia.
- Department of Colorectal Medicine and Genetics, The Royal Melbourne Hospital, Melbourne, Australia.
| | - J P Plazzer
- Department of Colorectal Medicine and Genetics, The Royal Melbourne Hospital, Melbourne, Australia
| | - F A Macrae
- Department of Medicine, University of Melbourne, The Royal Melbourne Hospital, Melbourne, Australia
- Department of Colorectal Medicine and Genetics, The Royal Melbourne Hospital, Melbourne, Australia
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5
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Wang YJ, Zhang X, Lam CK, Guo H, Wang C, Zhang S, Wu JC, Snyder M, Li J. Systems analysis of de novo mutations in congenital heart diseases identified a protein network in the hypoplastic left heart syndrome. Cell Syst 2022; 13:895-910.e4. [PMID: 36167075 PMCID: PMC9671831 DOI: 10.1016/j.cels.2022.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 05/14/2022] [Accepted: 09/02/2022] [Indexed: 01/26/2023]
Abstract
Despite a strong genetic component, only a few genes have been identified in congenital heart diseases (CHDs). We introduced systems analyses to uncover the hidden organization on biological networks of mutations in CHDs and leveraged network analysis to integrate the protein interactome, patient exomes, and single-cell transcriptomes of the developing heart. We identified a CHD network regulating heart development and observed that a sub-network also regulates fetal brain development, thereby providing mechanistic insights into the clinical comorbidities between CHDs and neurodevelopmental conditions. At a small scale, we experimentally verified uncharacterized cardiac functions of several proteins. At a global scale, our study revealed developmental dynamics of the network and observed its association with the hypoplastic left heart syndrome (HLHS), which was further supported by the dysregulation of the network in HLHS endothelial cells. Overall, our work identified previously uncharacterized CHD factors and provided a generalizable framework applicable to studying many other complex diseases. A record of this paper's Transparent Peer Review process is included in the supplemental information.
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Affiliation(s)
- Yuejun Jessie Wang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, the Bakar Computational Health Sciences Institute, the Parker Institute for Cancer Immunotherapy, and the Department of Neurology, School of Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA
| | - Xicheng Zhang
- Department of Genetics and the Center for Genomics and Personalized Medicine, School of Medicine, Stanford University, 291 Campus Dr., Stanford, CA 94305, USA
| | - Chi Keung Lam
- Stanford Cardiovascular Institute, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA; Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
| | - Hongchao Guo
- Stanford Cardiovascular Institute, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA
| | - Cheng Wang
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, the Bakar Computational Health Sciences Institute, the Parker Institute for Cancer Immunotherapy, and the Department of Neurology, School of Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA
| | - Sai Zhang
- Department of Genetics and the Center for Genomics and Personalized Medicine, School of Medicine, Stanford University, 291 Campus Dr., Stanford, CA 94305, USA
| | - Joseph C Wu
- Stanford Cardiovascular Institute, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA; Department of Medicine, Division of Cardiology, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA; Department of Radiology, Stanford University School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA
| | - Michael Snyder
- Department of Genetics and the Center for Genomics and Personalized Medicine, School of Medicine, Stanford University, 291 Campus Dr., Stanford, CA 94305, USA; Stanford Cardiovascular Institute, School of Medicine, Stanford University, 265 Campus Dr., Stanford, CA 94305, USA.
| | - Jingjing Li
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, the Bakar Computational Health Sciences Institute, the Parker Institute for Cancer Immunotherapy, and the Department of Neurology, School of Medicine, University of California, San Francisco, 35 Medical Center Way, San Francisco, CA 94143, USA.
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Atli EI, Atli E, Yalcintepe S, Demir S, Kalkan R, Akurut C, Ozen Y, Gurkan H. Investigation of Genetic Alterations in Congenital Heart Diseases in Prenatal Period. Glob Med Genet 2021; 9:29-33. [PMID: 35169781 PMCID: PMC8837410 DOI: 10.1055/s-0041-1736566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/09/2021] [Indexed: 11/09/2022] Open
Abstract
The prenatal diagnosis of congenital heart disease (CHD) is important because of mortality risk. The onset of CHD varies, and depending on the malformation type, the risk of aneuploidy is changed. To identify possible genetic alterations in CHD, G-banding, chromosomal microarray or if needed DNA mutation analysis and direct sequence analysis should be planned. In present study, to identify genetic alterations, cell culture, karyotype analysis, and single nucleotide polymorphism, array analyses were conducted on a total 950 samples. Interventional prenatal genetic examination was performed on 23 (2, 4%, 23/950) fetal CHD cases. Chromosomal abnormalities were detected in 5 out of 23 cases (21, 7%). Detected chromosomal abnormalities were 10q23.2 deletion, trisomy 18, 8p22.3-p23.2 deletion, 8q21.3-q24.3 duplication, 11q24.2q24.5 (9 Mb) deletion, and 8p22p12 (16.8 Mb) deletion. Our study highlights the importance of genetic testing in CHD.
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Affiliation(s)
- Emine Ikbal Atli
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Engin Atli
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Sinem Yalcintepe
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Selma Demir
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Rasime Kalkan
- Department of Medical Genetics, Faculty of Medicine, Near East University, Nicosia, Cyprus
| | - Cisem Akurut
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Yasemin Ozen
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
| | - Hakan Gurkan
- Department of Medical Genetics, Faculty of Medicine, Trakya University, Edirne, Turkey
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Lecoquierre F, Cassinari K, Chambon P, Nicolas G, Malsa S, Marlin R, Assouline Y, Fléjou JF, Frebourg T, Houdayer C, Bera O, Baert-Desurmont S. Patients with 10q22.3q23.1 recurrent deletion syndrome are at risk for juvenile polyposis. Eur J Med Genet 2019; 63:103773. [PMID: 31561016 DOI: 10.1016/j.ejmg.2019.103773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/16/2019] [Accepted: 09/22/2019] [Indexed: 01/10/2023]
Abstract
Juvenile polyposis syndrome (JPS) is a rare autosomal dominant predisposition to hamartomatous polyps within the gastrointestinal tract, at high risk for malignant transformation. BMPR1A and SMAD4 loss-of-function variants account for 50% of the cases. More specifically, point mutations and structural abnormalities in BMPR1A lead to a highly penetrant yet variable phenotype of JPS. Intriguingly, in the developmental disorder caused by a recurrent 10q22.3q23.1 7 Mb deletion which includes BMPR1A, juvenile polyps have never been reported. We present the case of a young adult harboring this recurrent deletion, in a context of intellectual disability, ventricular septal defect and severe juvenile polyposis syndrome diagnosed at the age of 25 years, requiring a surgical preventive colectomy. She developed a gastric adenocarcinoma from which she died at the age of 32. We hypothesize that with the current available pangenomic CNV arrays, the diagnosis of 10q22.3q23.1 deletion is often made several years before the onset of the digestive phenotype, which could explain the absence of reports for juvenile polyps. This observation highlights the importance of an active digestive surveillance of patients with 10q22.3q23.1 deletion.
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Affiliation(s)
- François Lecoquierre
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France.
| | - Kévin Cassinari
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France
| | - Pascal Chambon
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France
| | - Gaël Nicolas
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France
| | - Sarah Malsa
- Department of Cancer Genetics, Martinique University Hospital, Fort-de-France, Martinique, France
| | - Régine Marlin
- Department of Cancer Genetics, Martinique University Hospital, Fort-de-France, Martinique, France
| | - Yvon Assouline
- Departement of Gastro-Enterology, Clinique Saint Paul, Fort-de-France, Martinique, France
| | - Jean-François Fléjou
- Pathology Department, AP-HP, Hôpital Saint-Antoine, Faculté de Médecine Sorbonne Université, Paris, France
| | - Thierry Frebourg
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France
| | - Claude Houdayer
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France
| | - Odile Bera
- Department of Cancer Genetics, Martinique University Hospital, Fort-de-France, Martinique, France
| | - Stéphanie Baert-Desurmont
- Normandie Univ, UNIROUEN, Inserm U1245 and Rouen University Hospital, Department of Genetics and Reference Center for Developmental Disorders, Normandy Center for Genomic and Personalized Medicine, F76000, Rouen, France
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8
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Russell BE, Rigueur D, Weaver KN, Sund K, Basil JS, Hufnagel RB, Prows CA, Oestreich A, Al-Gazali L, Hopkin RJ, Saal HM, Lyons K, Dauber A. Homozygous missense variant in BMPR1A resulting in BMPR signaling disruption and syndromic features. Mol Genet Genomic Med 2019; 7:e969. [PMID: 31493347 PMCID: PMC6825850 DOI: 10.1002/mgg3.969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 07/12/2019] [Accepted: 08/04/2019] [Indexed: 12/12/2022] Open
Abstract
Background The bone morphogenetic protein (BMP) pathway is known to play an imperative role in bone, cartilage, and cardiac tissue formation. Truncating, heterozygous variants, and deletions of one of the essential receptors in this pathway, Bone Morphogenetic Protein Receptor Type1A (BMPR1A), have been associated with autosomal dominant juvenile polyposis. Heterozygous deletions have also been associated with cardiac and minor skeletal anomalies. Populations with atrioventricular septal defects are enriched for rare missense BMPR1A variants. Methods We report on a patient with a homozygous missense variant in BMPR1A causing skeletal abnormalities, growth failure a large atrial septal defect, severe subglottic stenosis, laryngomalacia, facial dysmorphisms, and developmental delays. Results Functional analysis of this variant shows increased chondrocyte death for cells with the mutated receptor, increased phosphorylated R‐Smads1/5/8, and loss of Sox9 expression mediated by decreased phosphorylation of p38. Conclusion This homozygous missense variant in BMPR1A appears to cause a distinct clinical phenotype.
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Affiliation(s)
- Bianca E Russell
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Diana Rigueur
- Department of Molecular, Cell & Developmental Biology, UCLA, Los Angeles, CA, USA
| | - Kathryn N Weaver
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Kristen Sund
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Janet S Basil
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Robert B Hufnagel
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Cynthia A Prows
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Alan Oestreich
- Department of Radiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Lihadh Al-Gazali
- Department of Pediatrics, United Arab Emirates University, Abu Dhabi, United Arab Emirates
| | - Robert J Hopkin
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Howard M Saal
- Division of Human Genetics, Cincinnati Children's Hospital and University of Cincinnati College of Medicine Department of Pediatrics, Cincinnati, OH, USA
| | - Karen Lyons
- Department of Molecular, Cell & Developmental Biology, UCLA, Los Angeles, CA, USA.,Department of Orthopaedic Surgery, UCLA, Los Angeles, CA, USA
| | - Andrew Dauber
- Division of Endocrinology, Cincinnati Children's Hospital and University of Cincinnati College of Medicine, Department of Pediatrics, Cincinnati, OH, USA
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9
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Wan GX, Cheng L, Qin HL, Zhang YZ, Wang LY, Zhang YG. MiR-15b-5p is Involved in Doxorubicin-Induced Cardiotoxicity via Inhibiting Bmpr1a Signal in H9c2 Cardiomyocyte. Cardiovasc Toxicol 2019; 19:264-275. [PMID: 30535663 DOI: 10.1007/s12012-018-9495-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The wide use of anthracyclines represented by doxorubicin (DOX) has benefited cancer patients, yet the clinical application is limited due to its cardiotoxicity. Although numerous evidences have supported a role of microRNAs (miRNAs) in DOX-induced myocardial damage, the exact etiology and pathogenesis remain largely obscure. In this study, we focused on the role of miR-15b-5p in DOX-induced cardiotoxicity. We employed a public miRNA and gene microarray to screen differentially expressed miRNAs (DEMs) and differentially expressed genes (DEGs) in rat cardiomyocytes, and 33 DEMs including miR-15b-5p and 237 DEGs including Bmpr1a and Gata4 were identified. The Gene ontology (GO) and pathway enrichment analysis of 237 DEGs indicated that the DEGs were mainly enriched in heart development and ALK pathway in cardiomyocyte which included the main receptor Bmpr1a and transcription factor Gata4. The up-regulated miR-15b-5p and down-regulated Bmpr1a and Gata4 mRNA expressions were further validated in H9c2 cardiomyocytes exposed to DOX. Moreover, the results showed overexpression of miR-15b-5p or inhibition of Bmpr1a may enhance the DOX-induced apoptosis, oxidative stress and mitochondria damage in H9c2 cardiomyocytes. The Bmpr1a was suggested as a potential target of miR-15b-5p by bioinformatics prediction. We further verified the negatively regulatory effect of miR-15b-5p on Bmpr1a signaling. Moreover, we also confirmed that overexpression of miR-15b-5p may exacerbate the DOX-induced apoptosis of H9c2 cardiomyocytes by affecting the protein expression ratio of Bcl-2/Bax and Akt activation, while this pro-apoptotic effect was able to be suppressed by Bmpr1a agonist. Collectively, the results suggest that miR-15b-5p is likely involved in doxorubicin-induced cardiotoxicity via inhibiting Bmpr1a signaling in H9c2 cardiomyocytes. Our study provides a novel insight for investigating DOX-induced cardiotoxicity.
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Affiliation(s)
- Guo-Xing Wan
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Lan Cheng
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Hai-Lun Qin
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Yun-Zhang Zhang
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Ling-Yu Wang
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China
| | - Yong-Gang Zhang
- Department of Cardiology, The Second Affiliated Hospital of Shantou University Medical College, Dongxia North Road, Shantou, 515041, Guangdong, People's Republic of China.
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10
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A familial congenital heart disease with a possible multigenic origin involving a mutation in BMPR1A. Sci Rep 2019; 9:2959. [PMID: 30814609 PMCID: PMC6393482 DOI: 10.1038/s41598-019-39648-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 01/28/2019] [Indexed: 12/12/2022] Open
Abstract
The genetics of many congenital heart diseases (CHDs) can only unsatisfactorily be explained by known chromosomal or Mendelian syndromes. Here, we present sequencing data of a family with a potentially multigenic origin of CHD. Twelve of nineteen family members carry a familial mutation [NM_004329.2:c.1328 G > A (p.R443H)] which encodes a predicted deleterious variant of BMPR1A. This mutation co-segregates with a linkage region on chromosome 1 that associates with the emergence of severe CHDs including Ebstein's anomaly, atrioventricular septal defect, and others. We show that the continuous overexpression of the zebrafish homologous mutation bmpr1aap.R438H within endocardium causes a reduced AV valve area, a downregulation of Wnt/ß-catenin signalling at the AV canal, and growth of additional tissue mass in adult zebrafish hearts. This finding opens the possibility of testing genetic interactions between BMPR1A and other candidate genes within linkage region 1 which may provide a first step towards unravelling more complex genetic patterns in cardiovascular disease aetiology.
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11
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Cai M, Huang H, Su L, Lin N, Wu X, Xie X, An G, Li Y, Lin Y, Xu L, Cao H. Chromosomal abnormalities and copy number variations in fetal ventricular septal defects. Mol Cytogenet 2018; 11:58. [PMID: 30519285 PMCID: PMC6264052 DOI: 10.1186/s13039-018-0408-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 11/20/2018] [Indexed: 11/18/2022] Open
Abstract
Background This study aimed to evaluate the applicability of chromosomal microarray analysis (CMA), rather than traditional chromosome analysis, in prenatal diagnosis of ventricular septal defects (VSDs) for superior prenatal genetic counseling and to reveal a potential correlation between submicroscopic chromosomal aberrations and VSDs. Results Among the 151 VSD cases, 79 (52.3%) had isolated defects and 72 (47.7%) had additional ultrasound anomalies. Karyotype analysis identified 16 chromosomal abnormalities. Besides the 14 cases of chromosome abnormalities consistent with karyotype analysis, CMA identified an additional 20 cases (13.2%) of abnormal copy number variations (CNVs), of which 13 were pathogenetic CNVs, 5 were variations of uncertain clinical significance (VOUS) and 2 were benign CNVs. The detection rate of pathogenic CNVs in non-isolated-VSDs was significantly higher than that in isolated-VSDs (36.1% (26/72) vs. 1.3% (1/79), p = 0.001). We also found that CMA results indicating pathogenic abnormalities affected the rate of pregnancy termination. Conclusions This study showed that CMA combined with cytogenetic analysis is particularly effective in identifying CNVs in fetuses with VSDs and can have an effect on obstetrical outcomes. The elucidation of the etiology of VSDs suggested that gene mutations or other factors may be implicated.
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Affiliation(s)
- Meiying Cai
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Hailong Huang
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Linjuan Su
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Na Lin
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Xiaoqing Wu
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Xiaorui Xie
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Gang An
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Ying Li
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Yuan Lin
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Liangpu Xu
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
| | - Hua Cao
- Department of the Prenatal Diagnosis Center, Fujian Provincial Maternity and Children's Hospital, affiliated hospital of Fujian Medical University, Fujian Key Laboratory for Prenatal Diagnosis and Birth Defect, Fuzhou, China
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12
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Guliani A, Dabas G, Mahajan R. A 4-year-old with photosensitivity, recurrent blistering, and heart murmur. Pediatr Dermatol 2018; 35:833-835. [PMID: 30397945 DOI: 10.1111/pde.13594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ankur Guliani
- Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Garima Dabas
- Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Rahul Mahajan
- Department of Dermatology, Venereology and Leprology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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13
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Coelho Molck M, Simioni M, Vieira TP, Sgardioli IC, Monteiro FP, Souza J, Fett‐Conte AC, Félix TM, Monlléo IL, Gil‐da‐Silva‐Lopes VL. Genomic imbalances in syndromic congenital heart disease. JORNAL DE PEDIATRIA (VERSÃO EM PORTUGUÊS) 2017. [DOI: 10.1016/j.jpedp.2017.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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14
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Molck MC, Simioni M, Paiva Vieira T, Sgardioli IC, Paoli Monteiro F, Souza J, Fett-Conte AC, Félix TM, Lopes Monlléo I, Gil-da-Silva-Lopes VL. Genomic imbalances in syndromic congenital heart disease. J Pediatr (Rio J) 2017; 93:497-507. [PMID: 28336264 DOI: 10.1016/j.jped.2016.11.007] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 11/21/2016] [Accepted: 11/21/2016] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE To identify pathogenic genomic imbalances in patients presenting congenital heart disease (CHD) with extra cardiac anomalies and exclusion of 22q11.2 deletion syndrome (22q11.2 DS). METHODS 78 patients negative for the 22q11.2 deletion, previously screened by fluorescence in situ hybridization (FISH) and/or multiplex ligation probe amplification (MLPA) were tested by chromosomal microarray analysis (CMA). RESULTS Clinically significant copy number variations (CNVs ≥300kb) were identified in 10% (8/78) of cases. In addition, potentially relevant CNVs were detected in two cases (993kb duplication in 15q21.1 and 706kb duplication in 2p22.3). Genes inside the CNV regions found in this study, such as IRX4, BMPR1A, SORBS2, ID2, ROCK2, E2F6, GATA4, SOX7, SEMAD6D, FBN1, and LTPB1 are known to participate in cardiac development and could be candidate genes for CHD. CONCLUSION These data showed that patients presenting CHD with extra cardiac anomalies and exclusion of 22q11.2 DS should be investigated by CMA. The present study emphasizes the possible role of CNVs in CHD.
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Affiliation(s)
- Miriam Coelho Molck
- Universidade Estadual de Campinas (UNICAMP), Departamento de Genética Médica, Campinas, SP, Brazil
| | - Milena Simioni
- Universidade Estadual de Campinas (UNICAMP), Departamento de Genética Médica, Campinas, SP, Brazil
| | - Társis Paiva Vieira
- Universidade Estadual de Campinas (UNICAMP), Departamento de Genética Médica, Campinas, SP, Brazil
| | | | - Fabíola Paoli Monteiro
- Universidade Estadual de Campinas (UNICAMP), Departamento de Genética Médica, Campinas, SP, Brazil
| | - Josiane Souza
- Centro de Atendimento Integral ao Fissurado Lábio Palatal (CAIF), Curitiba, PR, Brazil
| | - Agnes Cristina Fett-Conte
- Faculdade de Medicina de São José do Rio Preto, Departamento de Biologia Molecular, São José do Rio Preto, SP, Brazil
| | - Têmis Maria Félix
- Hospital de Clínicas de Porto Alegre, Serviço de Genética Médica, Porto Alegre, RS, Brazil
| | - Isabella Lopes Monlléo
- Universidade Federal de Alagoas (UFAL), Hospital Universitário, Faculdade de Medicina, Serviço de Genética Clínica, Maceió, AL, Brazil
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15
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Blue GM, Kirk EP, Giannoulatou E, Sholler GF, Dunwoodie SL, Harvey RP, Winlaw DS. Advances in the Genetics of Congenital Heart Disease: A Clinician's Guide. J Am Coll Cardiol 2017; 69:859-870. [PMID: 28209227 DOI: 10.1016/j.jacc.2016.11.060] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 11/15/2016] [Accepted: 11/17/2016] [Indexed: 11/18/2022]
Abstract
Our understanding of the genetics of congenital heart disease (CHD) is rapidly expanding; however, many questions, particularly those relating to sporadic forms of disease, remain unanswered. Massively parallel sequencing technology has made significant contributions to the field, both from a diagnostic perspective for patients and, importantly, also from the perspective of disease mechanism. The importance of de novo variation in sporadic disease is a recent highlight, and the genetic link between heart and brain development has been established. Furthermore, evidence of an underlying burden of genetic variation contributing to sporadic and familial forms of CHD has been identified. Although we are still unable to identify the cause of CHD for most patients, recent findings have provided us with a much clearer understanding of the types of variants and their individual contributions and collectively mark an important milestone in our understanding of both familial and sporadic forms of disease.
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Affiliation(s)
- Gillian M Blue
- Kids Heart Research, The Children's Hospital at Westmead, Sydney, Australia; Heart Centre for Children, The Children's Hospital at Westmead, Sydney, Australia; Sydney Medical School, University of Sydney, Australia
| | - Edwin P Kirk
- Department of Medical Genetics, Sydney Children's Hospital, Sydney, Australia; School of Women's and Children's Health, Faculty of Medicine, University of New South Wales, Sydney, Australia
| | - Eleni Giannoulatou
- Victor Chang Cardiac Research Institute, Darlinghurst, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia; School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney
| | - Gary F Sholler
- Kids Heart Research, The Children's Hospital at Westmead, Sydney, Australia; Heart Centre for Children, The Children's Hospital at Westmead, Sydney, Australia; Sydney Medical School, University of Sydney, Australia
| | - Sally L Dunwoodie
- Victor Chang Cardiac Research Institute, Darlinghurst, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia; School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney
| | - Richard P Harvey
- Victor Chang Cardiac Research Institute, Darlinghurst, Sydney, Australia; St Vincent's Clinical School, Faculty of Medicine, University of New South Wales, Sydney, Australia; School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney
| | - David S Winlaw
- Kids Heart Research, The Children's Hospital at Westmead, Sydney, Australia; Heart Centre for Children, The Children's Hospital at Westmead, Sydney, Australia; Sydney Medical School, University of Sydney, Australia.
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16
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Coelho Molck M, Simioni M, Paiva Vieira T, Paoli Monteiro F, Gil-da-Silva-Lopes VL. A New Case of the Rare 10q22.3q23.2 Microdeletion Flanked by Low-Copy Repeats 3/4. Mol Syndromol 2017; 8:161-167. [PMID: 28588438 DOI: 10.1159/000469965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2017] [Indexed: 01/07/2023] Open
Abstract
Deletions in the 10q22.3q23.2 region are rare and mediated by 2 low-copy repeats (LCRs 3 and 4). These deletions have already been recognized as the 10q22q23 deletion syndrome. The phenotype associated with this condition is rather uncharacteristic, and most common features are craniofacial dysmorphisms and developmental delay. We describe a boy with craniofacial dysmorphic features, developmental delay, tetralogy of Fallot, hand/foot abnormalities, and recurrent respiratory tract infections. Chromosomal microarray analysis disclosed a 7.8-Mb microdeletion at 10q22.3q23.2, flanked by LCRs 3/4, and an additional 16q12.1 microdeletion of 189 kb. This article reviews the clinical signs of reported cases with similar deletions and compares them with our patient, contributing to a better understanding of genotype-phenotype correlation.
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Affiliation(s)
- Miriam Coelho Molck
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Milena Simioni
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Társis Paiva Vieira
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Fabíola Paoli Monteiro
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Vera L Gil-da-Silva-Lopes
- Department of Medical Genetics, Faculty of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
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17
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Tang M, Yang YF, Xie L, Chen JL, Zhang WZ, Wang J, Zhao TL, Yang JF, Tan ZP. Duplication of 10q22.3-q23.3 encompassingBMPR1AandNGR3associated with congenital heart disease, microcephaly, and mild intellectual disability. Am J Med Genet A 2015; 167A:3174-9. [PMID: 26383923 DOI: 10.1002/ajmg.a.37347] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 08/10/2015] [Indexed: 12/30/2022]
Affiliation(s)
- Mi Tang
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Yi-Feng Yang
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
- Clinical Center for Gene Diagnosis and Therapy of State Key Laboratory of Medical Genetics; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Li Xie
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Jin-Lan Chen
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Wei-Zhi Zhang
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Jian Wang
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
- Clinical Center for Gene Diagnosis and Therapy of State Key Laboratory of Medical Genetics; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Tian-Li Zhao
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Jin-Fu Yang
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
- Clinical Center for Gene Diagnosis and Therapy of State Key Laboratory of Medical Genetics; The Second Xiangya Hospital; Central South University; Changsha Hunan China
| | - Zhi-Ping Tan
- Department of Cardiothoracic Surgery; The Second Xiangya Hospital; Central South University; Changsha Hunan China
- Clinical Center for Gene Diagnosis and Therapy of State Key Laboratory of Medical Genetics; The Second Xiangya Hospital; Central South University; Changsha Hunan China
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18
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D'Alessandro LCA, Al Turki S, Manickaraj AK, Manase D, Mulder BJM, Bergin L, Rosenberg HC, Mondal T, Gordon E, Lougheed J, Smythe J, Devriendt K, Bhattacharya S, Watkins H, Bentham J, Bowdin S, Hurles ME, Mital S. Exome sequencing identifies rare variants in multiple genes in atrioventricular septal defect. Genet Med 2015; 18:189-98. [PMID: 25996639 PMCID: PMC5988035 DOI: 10.1038/gim.2015.60] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Accepted: 04/02/2015] [Indexed: 12/30/2022] Open
Abstract
Purpose The genetic etiology of atrioventricular septal defect (AVSD) is unknown in 40% cases. Conventional sequencing and arrays have identified the etiology in only a minority of non-syndromic individuals with AVSD. Methods Whole exome sequencing was performed in 81 unrelated probands with AVSD to identify potentially causal variants in a comprehensive set of 112 genes with strong biological relevance to AVSD. Results A significant enrichment of rare and rare/damaging variants was identified in the gene set, compared with controls (odds ratio 1.52, 95% confidence interval 1.35–1.71, p = 4.8 x 10-11). The enrichment was specific to AVSD probands compared with a non-AVSD cohort with tetralogy of Fallot (odds ratio 2.25, 95% confidence interval 1.84-2.76, p = 2.2 x 10-16). Six genes (NIPBL, CHD7, CEP152, BMPR1a, ZFPM2 and MDM4) were enriched for rare variants in AVSD compared to controls, including three syndrome-associated genes (NIPBL, CHD7, CEP152). The findings were confirmed in a replication cohort of 81 AVSD probands. Conclusion Mutations in genes with strong biological relevance to AVSD, including syndrome-associated genes, can contribute to AVSD even in those with isolated heart disease. The identification of a gene set associated with AVSD will facilitate targeted genetic screening in this cohort.
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Affiliation(s)
- Lisa C A D'Alessandro
- Division of Cardiology, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Saeed Al Turki
- Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK.,Department of Pathology, King Abdulaziz Medical City, Riyadh, Saudi Arabia
| | - Ashok Kumar Manickaraj
- Division of Cardiology, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Dorin Manase
- Division of Cardiology, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | | | - Lynn Bergin
- Division of Cardiology, Department of Medicine, London Health Sciences Centre, London, Ontario, Canada
| | - Herschel C Rosenberg
- Department of Paediatrics, London Health Sciences Centre, London, Ontario, Canada
| | - Tapas Mondal
- Department of Pediatrics, Hamilton Health Sciences Centre, Hamilton, Ontario, Canada
| | - Elaine Gordon
- Division of Cardiology, Department of Medicine, Hamilton Health Sciences Centre, Hamilton, Ontario, Canada
| | - Jane Lougheed
- Division of Cardiology, Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - John Smythe
- Department of Pediatrics, Kingston General Hospital, Kingston, Ontario, Canada
| | - Koen Devriendt
- Centre for Human Genetics, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Shoumo Bhattacharya
- Radcliffe Department of Medicine & Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Hugh Watkins
- Radcliffe Department of Medicine & Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Jamie Bentham
- Department of Cardiology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts USA
| | - Sarah Bowdin
- Division of Genetics, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | | | - Seema Mital
- Division of Cardiology, Department of Pediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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19
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Paolini P, Pick D, Lapira J, Sannino G, Pasqualini L, Ludka C, Sprague LJ, Zhang X, Bartolotta EA, Vazquez-Hidalgo E, Barba DT, Bazan C, Hardiman G. Developmental and extracellular matrix-remodeling processes in rosiglitazone-exposed neonatal rat cardiomyocytes. Pharmacogenomics 2015; 15:759-74. [PMID: 24897284 DOI: 10.2217/pgs.14.39] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE The objective of this study was to investigate the effects of rosiglitazone (Avandia(®)) on gene expression in neonatal rat ventricular myocytes. MATERIALS & METHODS Myocytes were exposed to rosiglitazone ex vivo. The two factors examined in the experiment were drug exposure (rosiglitazone and dimethyl sulfoxide vs dimethyl sulfoxide), and length of exposure to drug (½ h, 1 h, 2 h, 4 h, 6 h, 8 h, 12 h, 18 h, 24 h, 36 h and 48 h). RESULTS Transcripts that were consistently expressed in response to the drug were identified. Cardiovascular system development, extracellular matrix and immune response are represented prominently among the significantly modified gene ontology terms. CONCLUSION Hmgcs2, Angptl4, Cpt1a, Cyp1b1, Ech1 and Nqo1 mRNAs were strongly upregulated in cells exposed to rosiglitazone. Enrichment of transcripts involved in cardiac muscle cell differentiation and the extracellular matrix provides a panel of biomarkers for further analysis in the context of adverse cardiac outcomes in humans. Original submitted 15 November 2013; Revision submitted 14 February 2014.
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Affiliation(s)
- Paul Paolini
- Department of Biology, San Diego State University, CA, USA
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Glessner JT, Bick AG, Ito K, Homsy J, Rodriguez-Murillo L, Fromer M, Mazaika E, Vardarajan B, Italia M, Leipzig J, DePalma SR, Golhar R, Sanders SJ, Yamrom B, Ronemus M, Iossifov I, Willsey AJ, State MW, Kaltman JR, White PS, Shen Y, Warburton D, Brueckner M, Seidman C, Goldmuntz E, Gelb BD, Lifton R, Seidman J, Hakonarson H, Chung WK. Increased frequency of de novo copy number variants in congenital heart disease by integrative analysis of single nucleotide polymorphism array and exome sequence data. Circ Res 2014; 115:884-896. [PMID: 25205790 DOI: 10.1161/circresaha.115.304458] [Citation(s) in RCA: 182] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
RATIONALE Congenital heart disease (CHD) is among the most common birth defects. Most cases are of unknown pathogenesis. OBJECTIVE To determine the contribution of de novo copy number variants (CNVs) in the pathogenesis of sporadic CHD. METHODS AND RESULTS We studied 538 CHD trios using genome-wide dense single nucleotide polymorphism arrays and whole exome sequencing. Results were experimentally validated using digital droplet polymerase chain reaction. We compared validated CNVs in CHD cases with CNVs in 1301 healthy control trios. The 2 complementary high-resolution technologies identified 63 validated de novo CNVs in 51 CHD cases. A significant increase in CNV burden was observed when comparing CHD trios with healthy trios, using either single nucleotide polymorphism array (P=7×10(-5); odds ratio, 4.6) or whole exome sequencing data (P=6×10(-4); odds ratio, 3.5) and remained after removing 16% of de novo CNV loci previously reported as pathogenic (P=0.02; odds ratio, 2.7). We observed recurrent de novo CNVs on 15q11.2 encompassing CYFIP1, NIPA1, and NIPA2 and single de novo CNVs encompassing DUSP1, JUN, JUP, MED15, MED9, PTPRE SREBF1, TOP2A, and ZEB2, genes that interact with established CHD proteins NKX2-5 and GATA4. Integrating de novo variants in whole exome sequencing and CNV data suggests that ETS1 is the pathogenic gene altered by 11q24.2-q25 deletions in Jacobsen syndrome and that CTBP2 is the pathogenic gene in 10q subtelomeric deletions. CONCLUSIONS We demonstrate a significantly increased frequency of rare de novo CNVs in CHD patients compared with healthy controls and suggest several novel genetic loci for CHD.
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Affiliation(s)
- Joseph T Glessner
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.,Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | | | - Kaoru Ito
- Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Jason Homsy
- Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Laura Rodriguez-Murillo
- Mindich Child Health and Development Institute, Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.,Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Menachem Fromer
- Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.,Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.,Psychiatric Genomics in the Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Erica Mazaika
- Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Badri Vardarajan
- Systems Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Michael Italia
- Center for Biomedical Informatics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Jeremy Leipzig
- Center for Biomedical Informatics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | | | - Ryan Golhar
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Stephan J Sanders
- Genetics, Yale University, New Haven, CT 06520, USA.,Psychiatry, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Boris Yamrom
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Michael Ronemus
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - Ivan Iossifov
- Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA
| | - A Jeremy Willsey
- Genetics, Yale University, New Haven, CT 06520, USA.,Psychiatry, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Matthew W State
- Genetics, Yale University, New Haven, CT 06520, USA.,Psychiatry, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jonathan R Kaltman
- Cardiovascular Sciences, National Heart, Lung, and Blood Institute (NHLBI), NIH, Bethesda, MD 20892, USA
| | - Peter S White
- Center for Biomedical Informatics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Yufeng Shen
- Systems Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Dorothy Warburton
- Genetics and Development (in Medicine), Columbia University Medical Center, New York, NY 10032, USA
| | | | | | - Elizabeth Goldmuntz
- Cardiology, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Bruce D Gelb
- Mindich Child Health and Development Institute, Pediatrics, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.,Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Richard Lifton
- Genetics, Yale University, New Haven, CT 06520, USA.,Medicine, Yale University, New Haven, CT 06520, USA
| | | | - Hakon Hakonarson
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA.,Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Wendy K Chung
- Pediatrics and Medicine, Columbia University Medical Center, New York, NY 10032, USA
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Prevalence and spectrum of Nkx2.6 mutations in patients with congenital heart disease. Eur J Med Genet 2014; 57:579-86. [PMID: 25195019 DOI: 10.1016/j.ejmg.2014.08.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/18/2014] [Indexed: 02/07/2023]
Abstract
Congenital heart disease (CHD) is the most common form of birth defect and is the most prevalent non-infectious cause of infant death. A growing body of evidence documents that genetic defects are involved in the pathogenesis of CHD. However, CHD is a genetically heterogeneous disease and the genetic basis underpinning CHD in an overwhelming majority of patients remain unclear. In this study, the coding exons and flanking introns of the Nkx2.6 gene, which codes for a homeodomain-containing transcription factor important for normal cardiovascular development, were sequenced in 320 unrelated patients with CHD, and two novel heterozygous Nkx2.6 mutations, p.V176M and p.K177X, were identified in two unrelated patients with CHD, respectively, including a patient with tetralogy of Fallot and a patient with double outlet of right ventricle and ventricular septal defect. The mutations were absent in 400 control chromosomes and the altered amino acids were completely conserved evolutionarily across species. Due to unknown transcriptional targets of Nkx2.6, the functional consequences of the identified mutations at transcriptional activity were evaluated by using Nkx2.5 as a surrogate. Alignment between human Nkx2.6 and Nkx2.5 proteins showed that V176M-mutant Nkx2.6 was equivalent to V182M-mutant Nkx2.5 and K177X-mutant Nkx2.6 was equal to K183X-mutant Nkx2.5, and introduction of V182M or K183X into Nkx2.5 significantly diminished its transcriptional activating function when compared with its wild-type counterpart. To our knowledge, this is the first report on the association of Nkx2.6 loss-of-function mutation with increased susceptibility to tetralogy of Fallot or double outlet of right ventricle and ventricular septal defect, providing novel insight into the molecular mechanism of CHD.
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22
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Petrova E, Neuner C, Haaf T, Schmid M, Wirbelauer J, Jurkutat A, Wermke K, Nanda I, Kunstmann E. A Boy with an LCR3/4-Flanked 10q22.3q23.2 Microdeletion and Uncommon Phenotypic Features. Mol Syndromol 2014; 5:19-24. [PMID: 24550761 DOI: 10.1159/000355847] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2013] [Indexed: 11/19/2022] Open
Abstract
The recurrent 10q22.3q23.2 deletion with breakpoints within low copy repeats 3 and 4 is a rare genomic disorder, reported in only 13 patients to date. The phenotype is rather uncharacteristic, which makes a clinical diagnosis difficult. A phenotypic feature described in almost all patients is a delay in speech development, albeit systematic studies are still pending. In this study, we report on a boy with an LCR3/4-flanked 10q22.3q23.2 deletion exhibiting an age-appropriate language development evaluated by a standardized test at an age of 2 years and 3 months. The boy was born with a cleft palate - a feature not present in any of the patients described before. Previously reported cases are reviewed, and the role of the BMPR1A gene is discussed. The phenotype of patients with an LCR3/4-flanked 10q22.3q23.2 deletion can be rather variable, so counseling the families regarding the prognosis of an affected child should be done with caution. Long-term studies of affected children are needed to delineate the natural history of this rare disorder.
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Affiliation(s)
- E Petrova
- Institute for Human Genetics, University of Wuerzburg, Wuerzburg, Germany
| | - C Neuner
- Institute for Human Genetics, University of Wuerzburg, Wuerzburg, Germany
| | - T Haaf
- Institute for Human Genetics, University of Wuerzburg, Wuerzburg, Germany
| | - M Schmid
- Institute for Human Genetics, University of Wuerzburg, Wuerzburg, Germany
| | - J Wirbelauer
- University Children's Hospital, University of Wuerzburg, Wuerzburg, Germany
| | - A Jurkutat
- Department of Special Education, Speech and Language Pathology, University of Wuerzburg, Wuerzburg, Germany
| | - K Wermke
- Department of Orthodontics, Center for Pre-Speech Development and Developmental Disorders, University of Wuerzburg, Wuerzburg, Germany
| | - I Nanda
- Institute for Human Genetics, University of Wuerzburg, Wuerzburg, Germany
| | - E Kunstmann
- Institute for Human Genetics, University of Wuerzburg, Wuerzburg, Germany
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23
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Osoegawa K, Iovannisci DM, Lin B, Parodi C, Schultz K, Shaw GM, Lammer EJ. Identification of novel candidate gene loci and increased sex chromosome aneuploidy among infants with conotruncal heart defects. Am J Med Genet A 2013; 164A:397-406. [PMID: 24127225 DOI: 10.1002/ajmg.a.36291] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 09/10/2013] [Indexed: 12/17/2022]
Abstract
Congenital heart defects (CHDs) are common malformations, affecting four to eight per 1,000 total births. Conotruncal defects are an important pathogenetic subset of CHDs, comprising nearly 20% of the total. Although both environmental and genetic factors are known to contribute to the occurrence of conotruncal defects, the causes remain unknown for most. To identify novel candidate genes/loci, we used array comparative genomic hybridization to detect chromosomal microdeletions/duplications. From a population base of 974,579 total births born during 1999-2004, we screened 389 California infants born with tetralogy of Fallot or d-transposition of the great arteries. We found that 1.7% (5/288) of males with a conotruncal defect had sex chromosome aneuploidy, a sevenfold increased frequency (relative risk = 7.0; 95% confidence interval 2.9-16.9). We identified eight chromosomal microdeletions/duplications for conotruncal defects. From these duplications and deletions, we found five high priority candidate genes (GATA4, CRKL, BMPR1A, SNAI2, and ZFHX4). This is the initial report that sex chromosome aneuploidy is associated with conotruncal defects among boys. These chromosomal microduplications/deletions provide evidence that GATA4, SNAI2, and CRKL are highly dosage sensitive genes involved in outflow tract development. Genome wide screening for copy number variation can be productive for identifying novel genes/loci contributing to non-syndromic common malformations.
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Affiliation(s)
- Kazutoyo Osoegawa
- Center for Genetics, Children's Hospital Oakland Research Institute, Children's Hospital Research Center Oakland, Oakland, California
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