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Zhang H, Li L, Yu Y, Li L, Jiang Y, Liu R. Prenatal detection of a 7q11.21 microdeletion (517-605 kb): A variant with normal characteristics at birth (STROBE). Medicine (Baltimore) 2021; 100:e24560. [PMID: 33578551 PMCID: PMC7886492 DOI: 10.1097/md.0000000000024560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 01/11/2021] [Indexed: 01/05/2023] Open
Abstract
In the literature, 7q11 deletion was reported with various abnormalities. However, there were other genetic conditions combined with 7q11.21. It is necessary to have sufficient pure 7q11.21 microdeletions for classifying the pathogenic categories of variation.Chromosomal karyotyping analysis was performed on cultured amniotic fluid cells. Eighteen pregnant women took chromosomal microarray using prenatal amniotic fluid samples at our center by Affymetrix CytoScan750K_Array. We followed the outcome of these pregnancies and determined postnatal health conditions.Cytogenetic studies delineated that all patients had normal karyotypes. The exception was P17, who had 47, XN. Single nucleotide polymorphism array results showed 517 to 605 kb deletions of 7q11.21 (chr7: 64543313-65196780) in these cases. The microarray results were pure or combined 7q11.21 microdeletions. In 11 pure 7q11.21 microdeletions and 7 combined cases, there was no apparent abnormal phenotype associated with partial 7q11.21. Among them, only mothers of P10 and P17 decided to terminate the pregnancies due to 18 trisomy or ultrasound abnormal fetal strephenopodia. In the follow-up survey, the newborns had no apparent abnormalities.In this study, we described 11 pure and 7 combined 7q11.21 microdeletions associating with no apparent postnatal phenotypic abnormalities. From this study, we can learn that the partial 7q11.21 deletion (chr7: 64543313-65196780) might be benign and have no association with human disorders.
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Affiliation(s)
- Hongguo Zhang
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University
- Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, China
| | - Leilei Li
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University
- Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, China
| | - Yang Yu
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University
- Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, China
| | - Linlin Li
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University
- Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, China
| | - Yuting Jiang
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University
- Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, China
| | - Ruizhi Liu
- Center for Reproductive Medicine, Center for Prenatal Diagnosis, First Hospital, Jilin University
- Jilin Engineering Research Center for Reproductive Medicine and Genetics, Jilin University, Changchun, China
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Dutra RL, Piazzon FB, Zanardo ÉA, Costa TVMM, Montenegro MM, Novo-Filho GM, Dias AT, Nascimento AM, Kim CA, Kulikowski LD. Rare genomic rearrangement in a boy with Williams-Beuren syndrome associated to XYY syndrome and intriguing behavior. Am J Med Genet A 2015; 167A:3197-203. [PMID: 26420477 DOI: 10.1002/ajmg.a.37360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Accepted: 08/17/2015] [Indexed: 12/27/2022]
Abstract
Williams-Beuren syndrome (WBS) is caused by a hemizygous contiguous gene microdeletion of 1.55-1.84 Mb at 7q11.23 region. Approximately, 28 genes have been shown to contribute to classical phenotype of SWB with presence of dysmorphic facial features, supravalvular aortic stenosis (SVAS), intellectual disability, and overfriendliness. With the use of Microarray-based comparative genomic hybridization and other molecular cytogenetic techniques, is possible define with more accuracy partial or atypical deletion and refine the genotype-phenotype correlation. Here, we report on a rare genomic structural rearrangement in a boy with atypical deletion in 7q11.23 and XYY syndrome with characteristic clinical signs, but not sufficient for the diagnosis of WBS. Cytogenetic analysis of G-banding showed a karyotype 47,XYY. Analysis of DNA with the technique of MLPA (Multiplex Ligation-dependent Probe Amplification) using kits a combination of kits (P064, P036, P070, and P029) identified an atypical deletion on 7q11.23. In addition, high resolution SNP Oligonucleotide Microarray Analysis (SNP-array) confirmed the alterations found by MLPA and revealed others pathogenic CNVs, in the chromosomes 7 and X. The present report demonstrates an association not yet described in literature, between Williams-Beuren syndrome and 47,XYY. The identification of atypical deletion in 7q11.23 concomitant to additional pathogenic CNVs in others genomic regions allows a better comprehension of clinical consequences of atypical genomic rearrangements.
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Affiliation(s)
- Roberta L Dutra
- Genetics Unit, Instituto da Criança, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil.,Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Flavia B Piazzon
- Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Évelin A Zanardo
- Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | | | - Marília M Montenegro
- Genetics Unit, Instituto da Criança, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil.,Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Gil M Novo-Filho
- Genetics Unit, Instituto da Criança, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil.,Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Alexandre T Dias
- Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Amom M Nascimento
- Genetics Unit, Instituto da Criança, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil.,Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Chong Ae Kim
- Genetics Unit, Instituto da Criança, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil
| | - Leslie D Kulikowski
- Department of Pathology, Cytogenomics Lab - LIM03, Faculdade de Medicina da Universidade de São Paulo (USP), São Paulo, Brazil.,Department of Collective Health - Human Reproduction and Genetics Center, Faculdade de Medicina do ABC, Santo André, São Paulo, Brazil
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Henrichsen CN, Csárdi G, Zabot MT, Fusco C, Bergmann S, Merla G, Reymond A. Using transcription modules to identify expression clusters perturbed in Williams-Beuren syndrome. PLoS Comput Biol 2011; 7:e1001054. [PMID: 21304579 PMCID: PMC3024257 DOI: 10.1371/journal.pcbi.1001054] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Accepted: 12/07/2010] [Indexed: 11/19/2022] Open
Abstract
The genetic dissection of the phenotypes associated with Williams-Beuren Syndrome (WBS) is advancing thanks to the study of individuals carrying typical or atypical structural rearrangements, as well as in vitro and animal studies. However, little is known about the global dysregulations caused by the WBS deletion. We profiled the transcriptomes of skin fibroblasts from WBS patients and compared them to matched controls. We identified 868 differentially expressed genes that were significantly enriched in extracellular matrix genes, major histocompatibility complex (MHC) genes, as well as genes in which the products localize to the postsynaptic membrane. We then used public expression datasets from human fibroblasts to establish transcription modules, sets of genes coexpressed in this cell type. We identified those sets in which the average gene expression was altered in WBS samples. Dysregulated modules are often interconnected and share multiple common genes, suggesting that intricate regulatory networks connected by a few central genes are disturbed in WBS. This modular approach increases the power to identify pathways dysregulated in WBS patients, thus providing a testable set of additional candidates for genes and their interactions that modulate the WBS phenotypes.
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Affiliation(s)
| | - Gábor Csárdi
- Department of Medical Genetics, University of Lausanne, Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
| | - Marie-Thérèse Zabot
- Centre de Biotechnologie Cellulaire, Hospices Civils de Lyon, Groupement Hospitalier Est, Bron, France
| | - Carmela Fusco
- Laboratory of Medical Genetics, IRCCS- Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
| | - Sven Bergmann
- Department of Medical Genetics, University of Lausanne, Lausanne, Switzerland
- Swiss Institute of Bioinformatics, Lausanne, Switzerland
- * E-mail: (AR); (GM); (SB)
| | - Giuseppe Merla
- Laboratory of Medical Genetics, IRCCS- Casa Sollievo della Sofferenza, San Giovanni Rotondo, Italy
- * E-mail: (AR); (GM); (SB)
| | - Alexandre Reymond
- The Center for Integrative Genomics, University of Lausanne, Lausanne, Switzerland
- * E-mail: (AR); (GM); (SB)
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