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Li Y, Liu P, Wang W, Jia H, Bai Y, Yuan Z, Yang Z. A novel genotype-phenotype between persistent-cloaca-related VACTERL and mutations of 8p23 and 12q23.1. Pediatr Res 2024; 95:1246-1253. [PMID: 38135728 DOI: 10.1038/s41390-023-02928-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 11/02/2023] [Accepted: 11/16/2023] [Indexed: 12/24/2023]
Abstract
The mechanism underlying anorectal malformations (ARMs)-related VACTERL (vertebral defects, anal atresia, cardiac defects, tracheo-esophageal fistula, and renal and limb abnormalities) remains unclear. Copy number variation (CNV) contributed to VACTERL pathogenicity. Here, we report a novel CNV in 8p23 and 12q23.1 identified in a case of ARMs-related VACTERL association. This 12-year-old girl presented a cloaca (urethra, vagina, and rectum opening together and sharing a single tube length), an isolated kidney, and a perpetuation of the left superior vena cava at birth. Her intelligence, growth, and development were slightly lower than those of normal children of the same age. Array comparative genomic hybridization revealed a 9.6-Mb deletion in 8p23.1-23.3 and a 0.52-Mb duplication in 12q23.1 in her genome. Furthermore, we reviewed the cases involving CNVs in patients with VACTERL, 8p23 deletion, and 12q23.1 duplication, and our case was the first displaying ARMs-related VACTERL association with CNV in 8p23 and 12q23.1. These findings enriched our understanding between VACTERL association and the mutations of 8p23 deletion and 12q23.1 duplication. IMPACT: This is a novel case of a Chinese girl with anorectal malformations (ARMs)-related VACTERL with an 8p23.1-23.3 deletion and 12q23.1 duplication. Cloaca malformation is presented with novel copy number variation in 8p23.1-23.3 deletion and 12q23.1 duplication.
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Affiliation(s)
- Yue Li
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Peiqi Liu
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Weilin Wang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Huimin Jia
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yuzuo Bai
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Zhengwei Yuan
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
| | - Zhonghua Yang
- Department of Pediatric Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
- Key Laboratory of Health Ministry for Congenital Malformation, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
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2
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Tolezano GC, Bastos GC, da Costa SS, Freire BL, Homma TK, Honjo RS, Yamamoto GL, Passos-Bueno MR, Koiffmann CP, Kim CA, Vianna-Morgante AM, de Lima Jorge AA, Bertola DR, Rosenberg C, Krepischi ACV. Burden of Rare Copy Number Variants in Microcephaly: A Brazilian Cohort of 185 Microcephalic Patients and Review of the Literature. J Autism Dev Disord 2024; 54:1181-1212. [PMID: 36502452 DOI: 10.1007/s10803-022-05853-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2022] [Indexed: 12/14/2022]
Abstract
Microcephaly presents heterogeneous genetic etiology linked to several neurodevelopmental disorders (NDD). Copy number variants (CNVs) are a causal mechanism of microcephaly whose investigation is a crucial step for unraveling its molecular basis. Our purpose was to investigate the burden of rare CNVs in microcephalic individuals and to review genes and CNV syndromes associated with microcephaly. We performed chromosomal microarray analysis (CMA) in 185 Brazilian patients with microcephaly and evaluated microcephalic patients carrying < 200 kb CNVs documented in the DECIPHER database. Additionally, we reviewed known genes and CNV syndromes causally linked to microcephaly through the PubMed, OMIM, DECIPHER, and ClinGen databases. Rare clinically relevant CNVs were detected in 39 out of the 185 Brazilian patients investigated by CMA (21%). In 31 among the 60 DECIPHER patients carrying < 200 kb CNVs, at least one known microcephaly gene was observed. Overall, four gene sets implicated in microcephaly were disclosed: known microcephaly genes; genes with supporting evidence of association with microcephaly; known macrocephaly genes; and novel candidates, including OTUD7A, BBC3, CNTN6, and NAA15. In the review, we compiled 957 known microcephaly genes and 58 genomic CNV loci, comprising 13 duplications and 50 deletions, which have already been associated with clinical findings including microcephaly. We reviewed genes and CNV syndromes previously associated with microcephaly, reinforced the high CMA diagnostic yield for this condition, pinpointed novel candidate loci linked to microcephaly deserving further evaluation, and provided a useful resource for future research on the field of neurodevelopment.
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Affiliation(s)
- Giovanna Cantini Tolezano
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Giovanna Civitate Bastos
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Silvia Souza da Costa
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Bruna Lucheze Freire
- Unidade de Endocrinologia Genética (LIM25), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 455 Avenida Doutor Arnaldo, São Paulo, SP, 01246-903, Brazil
| | - Thais Kataoka Homma
- Unidade de Endocrinologia Genética (LIM25), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 455 Avenida Doutor Arnaldo, São Paulo, SP, 01246-903, Brazil
| | - Rachel Sayuri Honjo
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Guilherme Lopes Yamamoto
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Maria Rita Passos-Bueno
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Celia Priszkulnik Koiffmann
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Chong Ae Kim
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Angela Maria Vianna-Morgante
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Alexander Augusto de Lima Jorge
- Unidade de Endocrinologia Genética (LIM25), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 455 Avenida Doutor Arnaldo, São Paulo, SP, 01246-903, Brazil
| | - Débora Romeo Bertola
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
- Unidade de Genética do Instituto da Criança, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, 647 Avenida Doutor Enéas Carvalho de Aguiar, São Paulo, SP, 05403-900, Brazil
| | - Carla Rosenberg
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil
| | - Ana Cristina Victorino Krepischi
- Department of Genetics and Evolutionary Biology, Human Genome and Stem-Cell Research Center, Institute of Biosciences, University of São Paulo, 106 Rua do Matão, São Paulo, SP, 05508-090, Brazil.
- Institute of Biosciences, University of São Paulo, 277 Rua do Matão, São Paulo, SP, 05508-090, Brazil.
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3
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Manohar S, Gofin Y, Streff H, Vossaert L, Camacho P, Murali CN. A familial deletion of 10p12.1 associated with thrombocytopenia. Am J Med Genet A 2024; 194:77-81. [PMID: 37746810 DOI: 10.1002/ajmg.a.63403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 08/23/2023] [Accepted: 09/01/2023] [Indexed: 09/26/2023]
Abstract
Thrombocytopenia can be inherited or acquired from a variety of causes. While hereditary causes of thrombocytopenia are rare, several genes have been associated with the condition. In this report, we describe an 18-year-old man and his mother, both of whom have congenital thrombocytopenia. Exome sequencing in the man revealed a 1006 kb maternally inherited deletion in the 10p12.1 region (arr[GRCh37] 10p12.1(27378928_28384564)x1) of uncertain clinical significance. This deletion in the THC2 locus includes genes ANKRD26, known to be involved in normal megakaryocyte differentiation, and MASTL, which some studies suggest is linked to autosomal dominant thrombocytopenia. In the family presented here, the deletion segregated with the congenital thrombocytopenia phenotype, suggesting that haploinsufficiency of one or both genes may be the cause. To our knowledge, this is the first report of a deletion of the THC2 locus associated with thrombocytopenia. Future functional studies of deletions of the THC2 locus may elucidate the mechanism for this phenotype observed clinically.
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Affiliation(s)
- Sujal Manohar
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Yoel Gofin
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Haley Streff
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Liesbeth Vossaert
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
| | - Pamela Camacho
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas, USA
- Texas Children's Cancer and Hematology Centers, Houston, Texas, USA
| | - Chaya N Murali
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
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Montenegro MM, Camilotti D, Quaio CRDC, Gasparini Y, Zanardo ÉA, Rangel-Santos A, Novo-Filho GM, Francisco G, Liro L, Nascimento A, Chehimi SN, Soares DCQ, Krepischi ACV, Grassi MS, Honjo RS, Palmeira P, Kim CA, Carneiro-Sampaio MMS, Rosenberg C, Kulikowski LD. Expanding the Phenotype of 8p23.1 Deletion Syndrome: Eight New Cases Resembling the Clinical Spectrum of 22q11.2 Microdeletion. J Pediatr 2023; 252:56-60.e2. [PMID: 36067875 DOI: 10.1016/j.jpeds.2022.08.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/15/2022] [Accepted: 08/31/2022] [Indexed: 10/14/2022]
Abstract
OBJECTIVE To report the effectiveness of early molecular diagnosis in the clinical management of rare diseases, presenting 8 patients with 8p23.1DS who have clinical features that overlap the phenotypic spectrum of 22q11.2DS. STUDY DESIGN This report is part of a previous study that aims to provide a precocious molecular diagnosis of the 22q11.2 deletion syndrome in 118 infants with congenital heart disease. To confirm the clinical diagnosis, patients underwent comparative genomic screening by the multiplex ligation-dependent probe amplification (MLPA) assay with the SALSA MLPA probemix kits P064-B2, P036-E1, P070-B2, P356-A1, and P250- B1. Subsequently, the patients performed the genomic microarray using the Infinium CytoSNP-850K BeadChip to confirm the deletion, determine the breakpoints of the deletion, and search for genomic copy number variations. RESULTS MLPA performed with 3 different kits revealed the 8p23.1 typical deletion involving the PPP1R3B, MSRA, and GATA4 genes in the 5 patients. The array analysis was performed on these 5 patients and 3 other patients (8 patients) who also had clinical suspicion of 22q11 deletion (8 patients) allowed a precise definition of the breakpoints and excluded other genomic abnormalities. CONCLUSIONS Cytogenomic screening was efficient in establishing a differential diagnosis and ruling out the presence of other concomitant syndromes. The clinical picture of the 8p23.1 deletion syndrome is challenging; however, cytogenomic tools can provide an exact diagnosis and help to clarify the genotype-phenotype complexity of these patients. Our reports underline the importance of early diagnosis and clinical follow-up of microdeletion syndromes.
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Affiliation(s)
- Marília Moreira Montenegro
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil; Laboratory of Medical Research in Pediatrics (LIM-36), Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil; Department of Pediatrics, Children's Institute, Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil.
| | - Débora Camilotti
- Human Genome and Stem-Cell Research Center, Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo (USP), Sao Paulo - SP, Brazil
| | | | - Yanca Gasparini
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Évelin Aline Zanardo
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Andreia Rangel-Santos
- Laboratory of Medical Research in Pediatrics (LIM-36), Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Gil Monteiro Novo-Filho
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Gleyson Francisco
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Lucas Liro
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Amom Nascimento
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Samar Nasser Chehimi
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Diogo Cordeiro Queiroz Soares
- Department of Pediatrics, Children's Institute, Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Ana C V Krepischi
- Human Genome and Stem-Cell Research Center, Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo (USP), Sao Paulo - SP, Brazil
| | - Marcília Sierro Grassi
- Department of Pediatrics, Children's Institute, Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Rachel Sayuri Honjo
- Genetics Unit, Department of Pediatrics, Children's Institute, Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Patricia Palmeira
- Laboratory of Medical Research in Pediatrics (LIM-36), Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Chong Ae Kim
- Genetics Unit, Department of Pediatrics, Children's Institute, Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Magda Maria Sales Carneiro-Sampaio
- Department of Pediatrics, Children's Institute, Clinical Hospital of Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
| | - Carla Rosenberg
- Human Genome and Stem-Cell Research Center, Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo (USP), Sao Paulo - SP, Brazil
| | - Leslie Domenici Kulikowski
- Cytogenomics Laboratory, Department of Pathology, Medicine School, University of Sao Paulo (FMUSP), Sao Paulo - SP, Brazil
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5
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Bastos GC, Tolezano GC, Krepischi ACV. Rare CNVs and Known Genes Linked to Macrocephaly: Review of Genomic Loci and Promising Candidate Genes. Genes (Basel) 2022; 13:genes13122285. [PMID: 36553552 PMCID: PMC9778424 DOI: 10.3390/genes13122285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 11/25/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Macrocephaly frequently occurs in single-gene disorders affecting the PI3K-AKT-MTOR pathway; however, epigenetic mutations, mosaicism, and copy number variations (CNVs) are emerging relevant causative factors, revealing a higher genetic heterogeneity than previously expected. The aim of this study was to investigate the role of rare CNVs in patients with macrocephaly and review genomic loci and known genes. We retrieved from the DECIPHER database de novo <500 kb CNVs reported on patients with macrocephaly; in four cases, a candidate gene for macrocephaly could be pinpointed: a known microcephaly gene-TRAPPC9, and three genes based on their functional roles-RALGAPB, RBMS3, and ZDHHC14. From the literature review, 28 pathogenic CNV genomic loci and over 300 known genes linked to macrocephaly were gathered. Among the genomic regions, 17 CNV loci (~61%) exhibited mirror phenotypes, that is, deletions and duplications having opposite effects on head size. Identifying structural variants affecting head size can be a preeminent source of information about pathways underlying brain development. In this study, we reviewed these genes and recurrent CNV loci associated with macrocephaly, as well as suggested novel potential candidate genes deserving further studies to endorse their involvement with this phenotype.
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Redaelli S, Conconi D, Sala E, Villa N, Crosti F, Roversi G, Catusi I, Valtorta C, Recalcati MP, Dalprà L, Lavitrano M, Bentivegna A. Characterization of Chromosomal Breakpoints in 12 Cases with 8p Rearrangements Defines a Continuum of Fragility of the Region. Int J Mol Sci 2022; 23:ijms23063347. [PMID: 35328767 PMCID: PMC8954119 DOI: 10.3390/ijms23063347] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/29/2022] Open
Abstract
Improvements in microarray-based comparative genomic hybridization technology have allowed for high-resolution detection of genome wide copy number alterations, leading to a better definition of rearrangements and supporting the study of pathogenesis mechanisms. In this study, we focused our attention on chromosome 8p. We report 12 cases of 8p rearrangements, analyzed by molecular karyotype, evidencing a continuum of fragility that involves the entire short arm. The breakpoints seem more concentrated in three intervals: one at the telomeric end, the others at 8p23.1, close to the beta-defensin gene cluster and olfactory receptor low-copy repeats. Hypothetical mechanisms for all cases are described. Our data extend the cohort of published patients with 8p aberrations and highlight the need to pay special attention to these sequences due to the risk of formation of new chromosomal aberrations with pathological effects.
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Affiliation(s)
- Serena Redaelli
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (S.R.); (G.R.); (L.D.); (M.L.)
| | - Donatella Conconi
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (S.R.); (G.R.); (L.D.); (M.L.)
- Correspondence: (D.C.); (A.B.)
| | - Elena Sala
- Medical Genetics Laboratory, Clinical Pathology Department, S. Gerardo Hospital, 20900 Monza, Italy; (E.S.); (N.V.); (F.C.)
| | - Nicoletta Villa
- Medical Genetics Laboratory, Clinical Pathology Department, S. Gerardo Hospital, 20900 Monza, Italy; (E.S.); (N.V.); (F.C.)
| | - Francesca Crosti
- Medical Genetics Laboratory, Clinical Pathology Department, S. Gerardo Hospital, 20900 Monza, Italy; (E.S.); (N.V.); (F.C.)
| | - Gaia Roversi
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (S.R.); (G.R.); (L.D.); (M.L.)
- Medical Genetics Laboratory, Clinical Pathology Department, S. Gerardo Hospital, 20900 Monza, Italy; (E.S.); (N.V.); (F.C.)
| | - Ilaria Catusi
- Medical Cytogenetics Laboratory, Istituto Auxologico Italiano IRCCS, 20095 Cusano Milanino, Italy; (I.C.); (C.V.); (M.P.R.)
| | - Chiara Valtorta
- Medical Cytogenetics Laboratory, Istituto Auxologico Italiano IRCCS, 20095 Cusano Milanino, Italy; (I.C.); (C.V.); (M.P.R.)
| | - Maria Paola Recalcati
- Medical Cytogenetics Laboratory, Istituto Auxologico Italiano IRCCS, 20095 Cusano Milanino, Italy; (I.C.); (C.V.); (M.P.R.)
| | - Leda Dalprà
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (S.R.); (G.R.); (L.D.); (M.L.)
- Medical Genetics Laboratory, Clinical Pathology Department, S. Gerardo Hospital, 20900 Monza, Italy; (E.S.); (N.V.); (F.C.)
| | - Marialuisa Lavitrano
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (S.R.); (G.R.); (L.D.); (M.L.)
| | - Angela Bentivegna
- School of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy; (S.R.); (G.R.); (L.D.); (M.L.)
- Correspondence: (D.C.); (A.B.)
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7
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Cicenia M, Alesi V, Orlando V, Magliozzi M, Di Tommaso S, Iodice FG, Pompei E, Toscano A, Digilio MC, Drago F, Novelli A, Baban A. 8p23.1 deletion: Look out for left ventricular hypertrabeculation and not only congenital heart diseases. Single-center experience and literature revision. Am J Med Genet A 2021; 188:883-895. [PMID: 34897976 DOI: 10.1002/ajmg.a.62598] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 11/04/2021] [Accepted: 11/12/2021] [Indexed: 11/09/2022]
Abstract
Deletions involving the distal portion of the short arm of chromosome 8(8p23.1) show a high phenotypic variability. Congenital heart diseases (CHD) are often described. GATA4 when mutated or deleted is reported to be involved in cardiac morphogenesis. Only twice, left ventricular non compaction (LVNC) was reported in literature in association with 8p23.1 deletion. The present cohort includes five new patients with 8p23.1 deletions including GATA4. The spectrum of CHD is variable. Moreover, in four patients, LV hypertrabeculation was detected and in the fifth LVNC was recognized. Literature revision identified 45 patients with 8p23.1 deletions (encompassing GATA4) and heart involvement. It included wide spectrum of CHD including: heterotaxy spectrum 7/45 (15, 6%), atrioventricular canal 14/45 (balanced 3/45 including two of them with hypoplastic aortic arch; unbalanced 4/45, Fallot-AVC 1/45, partial AVC 3/45, unspecified 3/45), predominant major left heart lesions included 2/45 (4, 4%): interrupted aortic arch and hypoplastic left heart syndrome. Left ventricular hypertrabeculation might be potentially underestimated in patients with 8p23.1 deletion. These might suggest the importance of including microarray analysis in this group of patients. Moreover, 8p23.1 microdeletion or GATA4 variants can be considered in heterotaxy genetic panels.
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Affiliation(s)
- Marianna Cicenia
- The European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Pediatric Cardiology and Arrhythmia/Syncope Units, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Viola Alesi
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Valeria Orlando
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Monia Magliozzi
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Silvia Di Tommaso
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Francesca G Iodice
- Pediatric Cardiac Anesthesia and Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Emanuela Pompei
- The European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Pediatric Cardiology and Arrhythmia/Syncope Units, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alessandra Toscano
- Department of Medical and Surgical Neonatology, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Maria C Digilio
- The European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Pediatric Cardiology and Arrhythmia/Syncope Units, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Fabrizio Drago
- The European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Pediatric Cardiology and Arrhythmia/Syncope Units, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Anwar Baban
- The European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Pediatric Cardiology and Arrhythmia/Syncope Units, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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8
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Prenatal Diagnosis of 8p23 Deletion Syndrome by Single Nucleotide Polymorphism Microarray. JOURNAL OF FETAL MEDICINE 2021. [DOI: 10.1007/s40556-021-00322-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Okur V, Hamm L, Kavus H, Mebane C, Robinson S, Levy B, Chung WK. Clinical and genomic characterization of 8p cytogenomic disorders. Genet Med 2021; 23:2342-2351. [PMID: 34282301 DOI: 10.1038/s41436-021-01270-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 06/29/2021] [Accepted: 06/29/2021] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To provide a detailed clinical and cytogenomic summary of individuals with chromosome 8p rearrangements of invdupdel(8p), del(8p), and dup(8p). METHODS We enrolled 97 individuals with invdupdel(8p), del(8p), and dup(8p). Clinical and molecular data were collected to delineate and compare the clinical findings and rearrangement breakpoints. We included additional 5 individuals with dup(8p) from the literature for a total of 102 individuals. RESULTS Eighty-one individuals had recurrent rearrangements of invdupdel(8p) (n = 49), del(8p)_distal (n = 4), del(8p)_proximal (n = 9), del(8p)_proximal&distal (n = 12), and dup(8p)_proximal (n = 7). Twenty-one individuals had nonrecurrent rearrangements. While all individuals had neurodevelopmental features, the frequency and severity of clinical findings were higher in individuals with invdupdel(8p), and with larger duplications. All individuals with GATA4 deletion had structural congenital heart defects; however, the presence of structural heart defects in some individuals with normal GATA4 copy number suggests there are other potentially contributing gene(s) on 8p. CONCLUSION Our study may inform families and health-care providers about the associated clinical findings and severity in individuals with chromosome 8p rearrangements, and guide researchers in investigating the underlying molecular and biological mechanisms by providing detailed clinical and cytogenomic information about individuals with distinct 8p rearrangements.
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Affiliation(s)
- Volkan Okur
- Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA.,Department of Human and Molecular Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Laura Hamm
- Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Haluk Kavus
- Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Caroline Mebane
- Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Scott Robinson
- Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA
| | - Brynn Levy
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY, USA
| | - Wendy K Chung
- Division of Molecular Genetics, Department of Pediatrics, Columbia University Medical Center, New York, NY, USA. .,Department of Medicine, Columbia University Medical Center, New York, NY, USA.
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10
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Catusi I, Garzo M, Capra AP, Briuglia S, Baldo C, Canevini MP, Cantone R, Elia F, Forzano F, Galesi O, Grosso E, Malacarne M, Peron A, Romano C, Saccani M, Larizza L, Recalcati MP. 8p23.2-pter Microdeletions: Seven New Cases Narrowing the Candidate Region and Review of the Literature. Genes (Basel) 2021; 12:genes12050652. [PMID: 33925474 PMCID: PMC8146486 DOI: 10.3390/genes12050652] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/11/2022] Open
Abstract
To date only five patients with 8p23.2-pter microdeletions manifesting a mild-to-moderate cognitive impairment and/or developmental delay, dysmorphisms and neurobehavioral issues were reported. The smallest microdeletion described by Wu in 2010 suggested a critical region (CR) of 2.1 Mb including several genes, out of which FBXO25, DLGAP2, CLN8, ARHGEF10 and MYOM2 are the main candidates. Here we present seven additional patients with 8p23.2-pter microdeletions, ranging from 71.79 kb to 4.55 Mb. The review of five previously reported and nine Decipher patients confirmed the association of the CR with a variable clinical phenotype characterized by intellectual disability/developmental delay, including language and speech delay and/or motor impairment, behavioral anomalies, autism spectrum disorder, dysmorphisms, microcephaly, fingers/toes anomalies and epilepsy. Genotype analysis allowed to narrow down the 8p23.3 candidate region which includes only DLGAP2, CLN8 and ARHGEF10 genes, accounting for the main signs of the broad clinical phenotype associated to 8p23.2-pter microdeletions. This region is more restricted compared to the previously proposed CR. Overall, our data favor the hypothesis that DLGAP2 is the actual strongest candidate for neurodevelopmental/behavioral phenotypes. Additional patients will be necessary to validate the pathogenic role of DLGAP2 and better define how the two contiguous genes, ARHGEF10 and CLN8, might contribute to the clinical phenotype.
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Affiliation(s)
- Ilaria Catusi
- Istituto Auxologico Italiano, IRCCS, Laboratory of Medical Cytogenetics and Molecular Genetics, 20145 Milan, Italy
| | - Maria Garzo
- Istituto Auxologico Italiano, IRCCS, Laboratory of Medical Cytogenetics and Molecular Genetics, 20145 Milan, Italy
| | - Anna Paola Capra
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, 98100 Messina, Italy
| | - Silvana Briuglia
- Department of Biomedical, Dental, Morphological and Functional Imaging Sciences, University of Messina, 98100 Messina, Italy
| | - Chiara Baldo
- UOC Laboratorio di Genetica Umana, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy
| | - Maria Paola Canevini
- Child Neuropsychiatry Unit-Epilepsy Center, Department of Health Sciences, ASST Santi Paolo e Carlo, San Paolo Hospital, Università Degli Studi di Milano, 20142 Milan, Italy
| | - Rachele Cantone
- Medical Genetics Unit, Città della Salute e della Scienza University Hospital, 10126 Turin, Italy
| | - Flaviana Elia
- Unit of Psychology, Oasi Research Institute-IRCCS, 94018 Troina, Italy
| | - Francesca Forzano
- Clinical Genetics Department, Guy's & St Thomas' NHS Foundation Trust, London SE1 9RT, UK
| | - Ornella Galesi
- Laboratory of Medical Genetics, Oasi Research Institute-IRCCS, 94018 Troina, Italy
| | - Enrico Grosso
- Medical Genetics Unit, Città della Salute e della Scienza University Hospital, 10126 Turin, Italy
| | - Michela Malacarne
- UOC Laboratorio di Genetica Umana, IRCCS Istituto Giannina Gaslini, 16147 Genova, Italy
| | - Angela Peron
- Child Neuropsychiatry Unit-Epilepsy Center, Department of Health Sciences, ASST Santi Paolo e Carlo, San Paolo Hospital, Università Degli Studi di Milano, 20142 Milan, Italy
- Human Pathology and Medical Genetics, ASST Santi Paolo e Carlo, San Paolo Hospital, 20142 Milan, Italy
- Division of Medical Genetics, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT 84132, USA
| | - Corrado Romano
- Unit of Pediatrics and Medical Genetics, Oasi Research Institute-IRCCS, 94018 Troina, Italy
| | - Monica Saccani
- Child Neuropsychiatry Unit-Epilepsy Center, Department of Health Sciences, ASST Santi Paolo e Carlo, San Paolo Hospital, Università Degli Studi di Milano, 20142 Milan, Italy
| | - Lidia Larizza
- Istituto Auxologico Italiano, IRCCS, Laboratory of Medical Cytogenetics and Molecular Genetics, 20145 Milan, Italy
| | - Maria Paola Recalcati
- Istituto Auxologico Italiano, IRCCS, Laboratory of Medical Cytogenetics and Molecular Genetics, 20145 Milan, Italy
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11
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Hong N, Zhang E, Xie H, Jin L, Zhang Q, Lu Y, Chen AF, Yu Y, Zhou B, Chen S, Yu Y, Sun K. The transcription factor Sox7 modulates endocardiac cushion formation contributed to atrioventricular septal defect through Wnt4/Bmp2 signaling. Cell Death Dis 2021; 12:393. [PMID: 33846290 PMCID: PMC8041771 DOI: 10.1038/s41419-021-03658-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Accepted: 03/22/2021] [Indexed: 02/02/2023]
Abstract
Cardiac septum malformations account for the largest proportion in congenital heart defects. The transcription factor Sox7 has critical functions in the vascular development and angiogenesis. It is unclear whether Sox7 also contributes to cardiac septation development. We identified a de novo 8p23.1 deletion with Sox7 haploinsufficiency in an atrioventricular septal defect (AVSD) patient using whole exome sequencing in 100 AVSD patients. Then, multiple Sox7 conditional loss-of-function mice models were generated to explore the role of Sox7 in atrioventricular cushion development. Sox7 deficiency mice embryos exhibited partial AVSD and impaired endothelial to mesenchymal transition (EndMT). Transcriptome analysis revealed BMP signaling pathway was significantly downregulated in Sox7 deficiency atrioventricular cushions. Mechanistically, Sox7 deficiency reduced the expressions of Bmp2 in atrioventricular canal myocardium and Wnt4 in endocardium, and Sox7 binds to Wnt4 and Bmp2 directly. Furthermore, WNT4 or BMP2 protein could partially rescue the impaired EndMT process caused by Sox7 deficiency, and inhibition of BMP2 by Noggin could attenuate the effect of WNT4 protein. In summary, our findings identify Sox7 as a novel AVSD pathogenic candidate gene, and it can regulate the EndMT involved in atrioventricular cushion morphogenesis through Wnt4-Bmp2 signaling. This study contributes new strategies to the diagnosis and treatment of congenital heart defects.
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Affiliation(s)
- Nanchao Hong
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China ,grid.8547.e0000 0001 0125 2443Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, 200032 Shanghai, China
| | - Erge Zhang
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China
| | - Huilin Xie
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China ,grid.8547.e0000 0001 0125 2443Department of Cardiology, Shanghai Institute of Cardiovascular Disease, Zhongshan Hospital, Fudan University, 200032 Shanghai, China
| | - Lihui Jin
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China
| | - Qi Zhang
- grid.16821.3c0000 0004 0368 8293Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 200092 Shanghai, China
| | - Yanan Lu
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China
| | - Alex F. Chen
- grid.16821.3c0000 0004 0368 8293Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 200092 Shanghai, China
| | - Yongguo Yu
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Endocrinology and Genetic Metabolism, Shanghai Institute for Pediatric Research, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China
| | - Bin Zhou
- grid.9227.e0000000119573309Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 200031 Shanghai, China
| | - Sun Chen
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China
| | - Yu Yu
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China ,grid.16821.3c0000 0004 0368 8293Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, School of Medicine, Shanghai Jiao Tong University, 200092 Shanghai, China
| | - Kun Sun
- grid.16821.3c0000 0004 0368 8293Department of Pediatric Cardiology, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 200092 Shanghai, China
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12
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46,XY,r(8)/45,XY,-8 Mosaicism as a Possible Mechanism of the Imprinted Birk-Barel Syndrome: A Case Study. Genes (Basel) 2020; 11:genes11121473. [PMID: 33316910 PMCID: PMC7763634 DOI: 10.3390/genes11121473] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 11/25/2020] [Accepted: 12/07/2020] [Indexed: 12/27/2022] Open
Abstract
Ring chromosome 8 (r(8)) is one of the least frequent ring chromosomes. Usually, maternal chromosome 8 forms a ring, which can be lost from cells due to mitotic instability. The 8q24 region contains the imprinted KCNK9 gene, which is expressed from the maternal allele. Heterozygous KCNK9 mutations are associated with the imprinting disorder Birk-Barel syndrome. Here, we report a 2.5-year-old boy with developmental delay, microcephaly, dysmorphic features, diffuse muscle hypotonia, feeding problems, motor alalia and noncoarse neurogenic type of disturbance of muscle electrogenesis, partially overlapping with Birk-Barel syndrome phenotype. Cytogenetic analysis of lymphocytes revealed his karyotype to be 46,XY,r(8)(p23q24.3)[27]/45,XY,−8[3]. A de novo 7.9 Mb terminal 8p23.3p23.1 deletion, a 27.1 Mb 8p23.1p11.22 duplication, and a 4.4 Mb intact segment with a normal copy number located between them, as well as a 154-kb maternal LINGO2 gene deletion (9p21.2) with unknown clinical significance were identified by aCGH + SNP array. These aberrations were confirmed by real-time PCR. According to FISH analysis, the 8p23.1-p11.22 duplication was inverted. The ring chromosome originated from maternal chromosome 8. Targeted massive parallel sequencing did not reveal the KCNK9 mutations associated with Birk-Barel syndrome. Our data allow to assume that autosomal monosomy with inactive allele of imprinted gene arising from the loss of a ring chromosome in some somatic cells may be an etiological mechanism of mosaic imprinting disorders, presumably with less severe phenotype.
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13
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Cortés H, Reyes-Rosales M, Rojas-Velasco AJ, García-Juárez B, Tapia-Guerrero YS, Arenas-Diaz S, Leyva-García N, Macías-Gallardo JJ, Carrillo-Mora P, Magaña JJ. Coexistence of Fragile-X Syndrome, 8p23.1 Deletion, and Balanced Translocation t(7;10)(p10;q24) in a Single Family. Genet Test Mol Biomarkers 2020; 24:527-531. [PMID: 32716213 DOI: 10.1089/gtmb.2019.0276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aims: Fragile-X syndrome (FXS) is the most common inherited form of intellectual disability; it is caused by an abnormal CGG-repeat expansion at the FMR1 gene. However, a few cases of girls with mutations in the FMR1 gene have been reported in the literature. In this study, we describe the clinical and genetic assessment of a family who exhibits the unusual coexistence of FXS, an 8p23.1 deletion, and balanced translocation t(7;10)(p10;q24) in multiple members, including a symptomatic girl with FXS. Materials and Methods: All of the family members underwent comprehensive clinical and neurological examinations. All members of the family were also molecularly diagnosed using a combination of fluorescent-polymerase chain reaction (PCR), Triplet Repeat Primed-PCR, capillary electrophoresis, and karyotyping. Results: We identified a male proband and a female patient that presented with the craniofacial characteristics of FXS, neuropsychomotor developmental delay, speech delay, intellectual deficit, and a positive molecular diagnosis of FXS. Interestingly, the female patient presented with a severe phenotype also associated with the presence of 8p23.1 deletion, while the proband patient presented a balanced translocation t(7;10)(p10;q24). Moreover, we detected multiple carriers of the FXS premutation in the family. Conclusions: To our knowledge, we describe for the first time the simultaneous occurrence of FXS and an 8p23.1 deletion and their possible synergistic effects on the phenotype of a female patient. Moreover, we describe the coexistence of FXS, an 8p23.1 deletion, and a balanced translocation t(7;10)(p10;q24) in the same family.
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Affiliation(s)
- Hernán Cortés
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Mariana Reyes-Rosales
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico.,Department of Medical Genetics, Naval Medical Center, Secretariat of Navy (SEMAR), Mexico City, Mexico
| | - Antonio J Rojas-Velasco
- Neurosciences Division, and National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Brenda García-Juárez
- Neurosciences Division, and National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Yessica S Tapia-Guerrero
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Silvia Arenas-Diaz
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Norberto Leyva-García
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Julio J Macías-Gallardo
- Electrodiagnostic Service, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Paul Carrillo-Mora
- Neurosciences Division, and National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico
| | - Jonathan J Magaña
- Laboratory of Genomic Medicine, Department of Genetics, National Rehabilitation Institute-Luis Guillermo Ibarra Ibarra (INR-LGII), Mexico City, Mexico.,School of Engineering and Sciences, Department of Bioengineering, Tecnológico de Monterrey-Campus Ciudad de México, Mexico City, Mexico
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14
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Li KG, Yin RX, Huang F, Chen WX, Wu JZ, Cao XL. XKR6 rs7014968 SNP Increases Serum Total Cholesterol Levels and the Risk of Coronary Heart Disease and Ischemic Stroke. Clin Appl Thromb Hemost 2020; 26:1076029620902844. [PMID: 32024373 PMCID: PMC7288804 DOI: 10.1177/1076029620902844] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The X Kell blood group complex subunit-related family member 6
(XKR6) gene single-nucleotide polymorphisms (SNPs) have
been associated with serum lipid profiles and the risk of coronary heart disease
(CHD) and ischemic stroke (IS) in several previous studies, but the association
between the XKR6 rs7014968 SNP and serum lipid levels and the
risk of CHD and IS has not been detected previously. This study aims to explore
the association between the XKR6 rs7014968 SNP and serum lipid
traits and the susceptibility to CHD and IS in the Guangxi Han Chinese
population. Snapshot technology was used to determine the genotypes of the
XKR6 rs7014968 SNP in 624 controls, 588 patients with CHD,
and 544 patients with IS. The XKR6 rs7014968C allele carriers
in the control group had higher serum total cholesterol (TC) levels than the C
allele noncarriers (P = .025). The XKR6
rs7014968C allele carriers also had an increased risk of CHD and IS
(P < .05-.01). Stratified analysis showed that the
patients with the rs7014968C allele in the female, age >60 years, body mass
index (BMI) >24 kg/m2, and hypertension subgroups had a higher
risk of CHD than those in the subgroup counterparts. The patients with the
rs7014968C allele in the male, BMI > 24 kg/m2, smoker, and
hypertension subgroups also had a higher risk of IS than those in the subgroup
counterparts. These results suggest that the XKR6 rs7014968 SNP
is likely to increase the risk of CHD and IS by increasing serum TC levels in
our study populations.
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Affiliation(s)
- Kai-Guang Li
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Rui-Xing Yin
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China.,Guangxi Key Laboratory Base of Precision Medicine in Cardio-cerebrovascular Disease Control and Prevention, Nanning, Guangxi, People's Republic of China.,Guangxi Clinical Research Center for Cardio-cerebrovascular Diseases, Nanning, Guangxi, People's Republic of China
| | - Feng Huang
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China.,Guangxi Key Laboratory Base of Precision Medicine in Cardio-cerebrovascular Disease Control and Prevention, Nanning, Guangxi, People's Republic of China.,Guangxi Clinical Research Center for Cardio-cerebrovascular Diseases, Nanning, Guangxi, People's Republic of China
| | - Wu-Xian Chen
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Jin-Zhen Wu
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
| | - Xiao-Li Cao
- Guangxi Key Laboratory Base of Precision Medicine in Cardio-cerebrovascular Disease Control and Prevention, Nanning, Guangxi, People's Republic of China.,Guangxi Clinical Research Center for Cardio-cerebrovascular Diseases, Nanning, Guangxi, People's Republic of China.,Department of Neurology, The First Affiliated Hospital, Guangxi Medical University, Nanning, Guangxi, People's Republic of China
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15
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Doyle MJ, Magli A, Estharabadi N, Amundsen D, Mills LJ, Martin CM. Sox7 Regulates Lineage Decisions in Cardiovascular Progenitor Cells. Stem Cells Dev 2019; 28:1089-1103. [PMID: 31154937 DOI: 10.1089/scd.2019.0040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Specification of the mesodermal lineages requires a complex set of morphogenetic events orchestrated by interconnected signaling pathways and gene regulatory networks. The transcription factor Sox7 has critical functions in differentiation of multiple mesodermal lineages, including cardiac, endothelial, and hematopoietic. Using a doxycycline-inducible mouse embryonic stem cell line, we have previously shown that expression of Sox7 in cardiovascular progenitor cells promotes expansion of endothelial progenitor cells (EPCs). In this study, we show that the ability of Sox7 to promote endothelial cell fate occurs at the expense of the cardiac lineage. Using ChIP-Seq coupled with ATAC-Seq we identify downstream target genes of Sox7 in cardiovascular progenitor cells and by integrating these data with transcriptomic analyses, we define Sox7-dependent gene programs specific to cardiac and EPCs. Furthermore, we demonstrate a protein-protein interaction between SOX7 and GATA4 and provide evidence that SOX7 interferes with the transcriptional activity of GATA4 on cardiac genes. In addition, we show that Sox7 modulates WNT and BMP signaling during cardiovascular differentiation. Our data represent the first genome-wide analysis of Sox7 function and reveal a critical role for Sox7 in regulating signaling pathways that affect cardiovascular progenitor cell differentiation.
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Affiliation(s)
- Michelle J Doyle
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Alessandro Magli
- 2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota.,3Stem Cell Institute, University of Minnesota, Minneapolis, Minnesota
| | - Nima Estharabadi
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Danielle Amundsen
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
| | - Lauren J Mills
- 4Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota
| | - Cindy M Martin
- 1Department of Medicine, University of Minnesota, Minneapolis, Minnesota.,2Lillehei Heart Institute, University of Minnesota, Minneapolis, Minnesota
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16
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Altıner Ş, Yürür Kutlay N. Importance of patient selection criteria in determining diagnostic copy number variations in patients with multiple congenital anomaly/mental retardation. Mol Cytogenet 2019; 12:23. [PMID: 31149029 PMCID: PMC6537423 DOI: 10.1186/s13039-019-0436-2] [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: 04/04/2019] [Accepted: 05/17/2019] [Indexed: 11/10/2022] Open
Abstract
Background Etiology of developmental delay/intellectual disability is very heterogeneous. In recent years, genetic causes have been defined through the use of chromosomal microarray analysis as a first step genetic test. Results Samples from 30 patients with multiple congenital anomaly and/or mental retardation were analyzed with array comparative genomic hybridization in the context of this study. Before this analysis, karyotyping, subtelomeric fluorescence in situ hybridization and additionally fragment analysis for fragile X in males, had been routinely made all of which were reported to be normal. The purpose of our study was to determine the copy number variations as well as to investigate methods to increase diagnostic yield of array comparative genomic hybridization and forming a suitable flow chart decision pipeline for test indication especially for developing countries. Genomic changes were identified at a rate of about 27% in our series. Although this ratio is higher than the literature data, it could be due to the patient selection criteria. Conclusion Chromosomal microarray analysis is not easily utilized for all patients because of its high-cost. Thus, for increasing cost-effectiveness, it may be used step by step for defined targets. Along with discussing the patients with copy number variations relevant with the phenotype, we suggest a flow chart for selection of diagnostic test with the highest diagnostic rate and the lowest expenditure which is quite important for developing countries.
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Affiliation(s)
- Şule Altıner
- Department of Medical Genetics, Trabzon Kanuni Training and Research Hospital, University of Health Sciences, Topal Osman Street 7, 61290 Trabzon, Turkey.,2Department of Medical Genetics, School of Medicine, Ankara University, Ankara, Turkey
| | - Nüket Yürür Kutlay
- 2Department of Medical Genetics, School of Medicine, Ankara University, Ankara, Turkey
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17
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Wagner-Mahler K, Kurzenne JY, Gastaud F, Hoflack M, Panaia Ferrari P, Berard E, Giuliano F, Karmous-Benailly H, Moceri P, Jouannelle C, Bourcier M, Robart E, Morel Y. Is interstitial 8p23 microdeletion responsible of 46,XY gonadal dysgenesis? One case report from birth to puberty. Mol Genet Genomic Med 2019; 7:e558. [PMID: 30690934 PMCID: PMC6418366 DOI: 10.1002/mgg3.558] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/09/2018] [Accepted: 12/02/2018] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Chromosome 8p deletions are associated with a variety of conditions, including cardiac abnormalities, mental, behavioral problems with variable morphotype and genitourinary anomalies in boys. METHODS We describe the follow-up over almost 15 years of a boy who initially presented with perineal hypospadias with a micropenis and cryptorchidism with 46,XY DSD. RESULTS Imaging, pathology, and hormonal exploration suggested gonadal dysgenesis. Further genetic studies were deemed necessary during follow-up. The child's further development recommended further genetic analyses. High-resolution analysis showed an interstitial deletion on the short arm of a chromosome 8: 46,XY,del(8)(p23.1p23.1). We reviewed the literature and found 102 cases including 54 boys: 62.7% had mental problems, 50.9% a dysmorphic disorder, 55.9% cardiac anomalies, and 46.3% of the boys had genitourinary anomalies. Our patient's genital abnormalities can be explained by the haploinsufficiency of the genes, such as GATA4 (OMIM 600576) that are included in the deleted area. CONCLUSION This case of severe 46,XY DSD raises the question of the role played by 8p23 microdeletion in gonadal dysgenesis. Clinicians are encouraged to look for this anomaly on chromosome 8 in cases of unexplained gonadal dysgenesis even when few signs suggestive of this anomaly are present.
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Affiliation(s)
- Kathy Wagner-Mahler
- Département de Pédiatrie, Centre Hospitalier de Nice, Nice, France.,Hôpitaux Pédiatriques de Nice CHU Lenval, Nice, France
| | - Jean-Yves Kurzenne
- Département de Pédiatrie, Centre Hospitalier de Nice, Nice, France.,Hôpitaux Pédiatriques de Nice CHU Lenval, Nice, France
| | | | - Marie Hoflack
- Hôpitaux Pédiatriques de Nice CHU Lenval, Nice, France
| | | | - Etienne Berard
- Département de Pédiatrie, Centre Hospitalier de Nice, Nice, France
| | | | | | - Pamela Moceri
- Département de Cardiologie, Centre Hospitalier de Nice, Nice, France
| | | | | | - Elise Robart
- Hôpitaux Pédiatriques de Nice CHU Lenval, Nice, France
| | - Yves Morel
- Centre Hospitalier Universitaire de Lyon - HCL GH Est, Centre de Biologie et Pathologie Est, Bron, France
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Goldschmidt B, Lopes CAA, Resende F, Pissinatti TA, Toledo DC, Meireles BCS, Cordeiro NFG. Terminal 13p deletion in squirrel monkey (Saimiri sciureus) with differentiated phenotype. J Med Primatol 2018; 47:412-415. [PMID: 29956824 DOI: 10.1111/jmp.12359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND The taxonomic classification of squirrel monkeys is often controversial issue offering many different information. The classification of captive animals is difficult due to the phenotypic similarities between the presented species, which is observed mainly in coat coloration. METHODS The objective of this study was to analyze the chromosome pattern of one squirrel monkey with off standard physical characteristics, which is kept in the Laboratory Animals Breeding Center in Rio de Janeiro State, Brazil, and try to establish some correlations. Chromosomes were obtained using lymphocyte culture technique. RESULTS AND CONCLUSIONS Evaluation of G bands showed a terminal deletion in one chromosome of pair 13. The association of the results found with the different phenotypic characteristics led us to classify it as a Saimiri sciureus specimen with a structural chromosomal change, possibly allowing the expression of hemizygous alleles.
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Affiliation(s)
- B Goldschmidt
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
| | - C A A Lopes
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
| | - F Resende
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
| | - T A Pissinatti
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
| | - D C Toledo
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
| | - B C S Meireles
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
| | - N F G Cordeiro
- Serviço de Criação de Primatas Não-Humanos/ICTB/ FIOCRUZ, Rio de Janeiro, Brazil
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Russell MW, Chung WK, Kaltman JR, Miller TA. Advances in the Understanding of the Genetic Determinants of Congenital Heart Disease and Their Impact on Clinical Outcomes. J Am Heart Assoc 2018; 7:e006906. [PMID: 29523523 PMCID: PMC5907537 DOI: 10.1161/jaha.117.006906] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mark W Russell
- Division of Pediatric Cardiology, University of Michigan, Ann Arbor, MI
| | - Wendy K Chung
- Departments of Pediatrics and Medicine, Columbia University, New York, NY
| | - Jonathan R Kaltman
- Division of Cardiovascular Sciences, National Heart, Lung, and Blood Institute, Bethesda, MD
| | - Thomas A Miller
- Department of Pediatrics, University of Utah, Salt Lake City, UT
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20
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Papadopoulou Z, Papoulidis I, Sifakis S, Markopoulos G, Vetro A, Vlaikou AM, Ziegler M, Liehr T, Thomaidis L, Zuffardi O, Syrrou M, George K, Manolakos E. Partial monosomy 8p and trisomy 16q in two children with developmental delay detected by array comparative genomic hybridization. Mol Med Rep 2017; 16:8808-8818. [PMID: 29039589 PMCID: PMC5779959 DOI: 10.3892/mmr.2017.7760] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 02/07/2017] [Indexed: 11/06/2022] Open
Abstract
Two cases of liveborn unrelated children with developmental delay and overlapping unbalanced translocations der(8)t(8;16)(p23.2;q23.3) and der (8)t(8;16)(p23.1;q23.1), leading to partial monosomy 8p and partial trisomy 16q, are reported in the present study. The first patient was a 10-year-old boy with mild developmental delay and minor congenital anomalies (borderline microcephaly, clinodactyly, hypertelorism, epicanthus, mild systolic murmur and kidney reflux). The second patient was a 3 year-old girl with developmental delay, gross motor milestone delay and dysmorphic features. Array-comparative genomic hybridization analysis revealed that partial chromosome 8p monosomy extended from 8p23.2 to 8pter (4.8 Mb) in Patient 1 and from 8p23.1 to 8pter (9.5 Mb) in Patient 2, and partial chromosome 16 trisomy extended from 16q23.3 to 16qter (5.6 Mb) in Patient 1 and from 16q23.1 to 16qter (11.7 Mb) in Patient 2. The mechanism of appearance of the rearrangement in association with the genes involved and the architecture of the region is discussed.
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Affiliation(s)
- Zoe Papadopoulou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Ioannis Papoulidis
- Access To Genome, Laboratory of Genetics, Athens 11528‑Thessaloniki 55134, Greece
| | - Stavros Sifakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, Heraklion 71201, Greece
| | - Georgios Markopoulos
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Annalisa Vetro
- Department of Molecular Medicine, University of Pavia, I‑27100 Pavia, Italy
| | - Angeliki-Maria Vlaikou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Monica Ziegler
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, D‑07743 Jena, Germany
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, D‑07743 Jena, Germany
| | - Loretta Thomaidis
- Developmental Assessment Unit, 2nd Department of Pediatrics, P. & A. Kyriakou Children's Hospital, National and Kapodistrian University of Athens School of Medicine, Athens 11527, Greece
| | - Orsetta Zuffardi
- Department of Molecular Medicine, University of Pavia, I‑27100 Pavia, Italy
| | - Maria Syrrou
- Laboratory of Biology, Faculty of Medicine, School of Health Sciences, University of Ioannina, Ioannina 45110, Greece
| | - Kitsos George
- Department of Ophthalmology, University of Ioannina, Ioannina 45110, Greece
| | - Emmanouil Manolakos
- Access To Genome, Laboratory of Genetics, Athens 11528‑Thessaloniki 55134, Greece
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Shi S, Lin S, Chen B, Zhou Y. Isolated chromosome 8p23.2‑pter deletion: Novel evidence for developmental delay, intellectual disability, microcephaly and neurobehavioral disorders. Mol Med Rep 2017; 16:6837-6845. [PMID: 28901431 PMCID: PMC5865842 DOI: 10.3892/mmr.2017.7438] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 08/07/2017] [Indexed: 12/26/2022] Open
Abstract
The current study presents a patient carrying a de novo ~6 Mb deletion of the isolated chromosome 8p23.2-pter that was identified with a single-nucleotide polymorphism array. The patient was characterized by developmental delay (DD)/intellectual disability (ID), microcephaly, autism spectrum disorder, attention-deficit/hyperactivity disorders and mildly dysmorphic features. The location, size and gene content of the deletion observed in this patient were compared with those in 7 patients with isolated 8p23.2 to 8pter deletions reported in previous studies (4 patients) or recorded in the Database of Chromosomal Imbalance and Phenotype in Humans Using Ensembl Resources (DECIPHER) database (3 patients). The deletions reported in previous studies were assessed using a chromosomal microarray analysis. The 8p23.2-pter deletion was a distinct microdeletion syndrome, as similar phenotypes were observed in patients with this deletion. Furthermore, following a detailed review of the potential associations between the genes located from 8p23.2 to 8pter and their clinical significance, it was hypothesized that DLG associated protein 2, ceroid-lipofuscinosis neuronal 8, Rho guanine nucleotide exchange factor 10 and CUB and sushi multiple domains 1 may be candidate genes for DD/ID, microcephaly and neurobehavioral disorders. However, firm evidence should be accumulated from high-resolution studies of patients with small, isolated, overlapping and interstitial deletions involving the region from 8p23.2 to 8pter. These studies will allow determination of genotype-phenotype associations for the specific genes crucial to 8p23.2-pter.
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Affiliation(s)
- Shanshan Shi
- Fetal Medicine Center, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, P.R. China
| | - Shaobin Lin
- Fetal Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Baojiang Chen
- Fetal Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Yi Zhou
- Fetal Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
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Shin S, Yu N, Choi JR, Jeong S, Lee KA. Routine chromosomal microarray analysis is necessary in Korean patients with unexplained developmental delay/mental retardation/autism spectrum disorder. Ann Lab Med 2016. [PMID: 26206688 PMCID: PMC4510504 DOI: 10.3343/alm.2015.35.5.510] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Background All over the world, chromosomal microarray (CMA) is now the first tier diagnostic assay for genetic testing to evaluate developmental delay (DD), mental retardation (MR), and autism spectrum disorder (ASD) with unknown etiology. The average diagnostic yield of the CMA test is known to be about 12.2%, while that of conventional G-banding karyotype is below 3%. This study aimed to assess the usefulness of CMA for the purpose of clinical diagnostic testing in the Korean population. Methods We performed CMA and multiplex ligation-dependent probe amplification (MLPA) tests in 96 patients with normal karyotype and unexplained DD, MR, or ASD. The CMA was conducted with CytoScan 750K array (Affymetrix, USA) with an average resolution of 100 kb. Results Pathogenic copy number variations (CNVs) were detected in 15 patients by CMA and in two patients by MLPA for four known microdeletion syndromes (Prader-Willi/Angelman syndrome, DiGeorge syndrome, Miller-Dieker syndrome and Williams syndrome) designated by National Health Insurance system in Korea. The diagnostic yield was 15.6% and 2.1%, respectively. Thirteen (13.5%) patients (excluding cases with pathogenic CNVs) had variants of uncertain clinical significance. There was one patient with a 17.1-megabase (Mb) region of homozygosity on chromosome 4q. Conclusions Our findings suggest the necessity of CMA as a routine diagnostic test for unexplained DD, MR, and ASD in Korea.
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Affiliation(s)
- Saeam Shin
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Nae Yu
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jong Rak Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seri Jeong
- Department of Laboratory Medicine, Kosin University College of Medicine, Busan, Korea
| | - Kyung A Lee
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
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Chen CP, Peng CR, Chang TY, Guo WY, Chen YN, Wu PS, Town DD, Wang W. Prenatal diagnosis of chromosome 8p23.1 microdeletion by array comparative genomic hybridization using uncultured amniocytes in a pregnancy associated with fetal partial corpus callosum agenesis and schizencephaly. Taiwan J Obstet Gynecol 2016; 54:797-8. [PMID: 26701010 DOI: 10.1016/j.tjog.2015.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/30/2015] [Accepted: 10/23/2015] [Indexed: 11/26/2022] Open
Affiliation(s)
- Chih-Ping Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang-Ming University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Cheng-Ran Peng
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Wan-Yuo Guo
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yen-Ni Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Dai-Dyi Town
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan; Department of Bioengineering, Tatung University, Taipei, Taiwan
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Khelifa HB, Kammoun M, Hannachi H, Soyah N, Hammami S, Elghezal H, Sanlaville D, Saad A, Mougou-Zerelli S. Microarray Analysis of 8p23.1 Deletion in New Patients with Atypical Phenotypical Traits. J Pediatr Genet 2016; 4:187-93. [PMID: 27617130 DOI: 10.1055/s-0035-1565269] [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] [Received: 04/01/2015] [Accepted: 09/08/2015] [Indexed: 10/22/2022]
Abstract
We describe two patients carrying deletions of chromosome 8p23.1 with a commonly critical region identified by means of oligonucleotide array comparative genomic hybridization (array CGH). They didn't present congenital heart defects or behavioral problems. Only one patient presented with intellectual disability and carrying deletion of TNKS gene. We presumed the inclusion of TNKS gene in the mental impairment.
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Affiliation(s)
- Hela Ben Khelifa
- Cytogenetic and Reproductive Biology Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Common Service Units for Research in Genetics, Faculty of Medicine of Sousse, University of Sousse, Tunisia
| | - Molka Kammoun
- Cytogenetic and Reproductive Biology Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Common Service Units for Research in Genetics, Faculty of Medicine of Sousse, University of Sousse, Tunisia
| | - Hanene Hannachi
- Cytogenetic and Reproductive Biology Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Common Service Units for Research in Genetics, Faculty of Medicine of Sousse, University of Sousse, Tunisia
| | - Najla Soyah
- Pediatric Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia
| | - Saber Hammami
- Pediatric Department, Fattouma Bourguiba University Teaching Hospital, Monastir, Tunisia
| | - Hatem Elghezal
- Cytogenetic and Reproductive Biology Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Common Service Units for Research in Genetics, Faculty of Medicine of Sousse, University of Sousse, Tunisia
| | - Damien Sanlaville
- Cytogenetic Department, Biological and Pathological Center EST, Bron, Lyon- France
| | - Ali Saad
- Cytogenetic and Reproductive Biology Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Common Service Units for Research in Genetics, Faculty of Medicine of Sousse, University of Sousse, Tunisia
| | - Soumaya Mougou-Zerelli
- Cytogenetic and Reproductive Biology Department, Farhat Hached University Teaching Hospital, Sousse, Tunisia; Common Service Units for Research in Genetics, Faculty of Medicine of Sousse, University of Sousse, Tunisia
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26
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8p23.1 Interstitial Deletion in a Patient with Congenital Cardiopathy, Neurobehavioral Disorders, and Minor Signs Suggesting 22q11.2 Deletion Syndrome. J Dev Behav Pediatr 2015; 36:544-8. [PMID: 26263419 DOI: 10.1097/dbp.0000000000000197] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Copy number variation studies of known disorders have the potential to improve the characterization of clinical phenotypes and may help identifying candidate genes and their pathways. The authors described a child with congenital heart disease, microcephaly, facial dysmorphisms, developmental delay, learning difficulties, and behavioral problems. There was initially a clinical suspicion of 22q11.2 deletion syndrome (22q11.2 DS), but molecular cytogenetic analysis (array genomic hybridization [aGH]) showed the presence of a de novo 3.6-Mb interstitial microdeletion in 8p23.1. The main features of 8p23.1 DS include congenital heart disease and behavioral problems, in addition to minor dysmorphisms and mental delay. Therefore, this article highlights the application of aGH to investigate 8p23.1 deletion in nonconfirmed 22q11.2 DS patients presenting neurobehavioral disorders, congenital cardiopathy, and minor dysmorphisms.
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Aortic dilation, genetic testing, and associated diagnoses. Genet Med 2015; 18:356-63. [PMID: 26133393 DOI: 10.1038/gim.2015.88] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 05/19/2015] [Indexed: 01/15/2023] Open
Abstract
PURPOSE The aims of this study were to determine the genetic diagnoses most frequently associated with aortic dilation in a large population and to describe the results of genetic testing in the same. METHODS A retrospective review of records from patients with known aortic dilation identified through an echocardiogram database was performed. During the study period, different chromosomal microarray platforms and molecular diagnostic techniques were used. RESULTS A total of 715 patients (mean age, 9.7 years; 67% male) met study inclusion criteria. The overall frequency of underlying presumptive or confirmed genetic diagnoses was 17% (125/715). Molecular evaluation for possible underlying aortopathy-related disorders was performed in 9% of patients (66/715). Next-generation sequencing panels were performed in 16 patients, and pathogenic abnormalities were detected in 4 (25%). Microarrays were conducted in 10% of patients (72/715), with a total of 23 pathogenic copy-number variants identified in 19 patients (26%). Marfan syndrome was the most frequently recognized genetic disorder associated with aortic dilation, but other cytogenetic abnormalities and associated diagnoses also were identified. CONCLUSION The differential diagnosis in patients with aortic dilation is broad and includes many conditions outside the common connective tissue disorder spectrum. A genetics evaluation should be considered to assist in the diagnostic evaluation.Genet Med 18 4, 356-363.
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Weber A, Köhler A, Hahn A, Müller U. 8p23.1 duplication syndrome: narrowing of critical interval to 1.80 Mbp. Mol Cytogenet 2014; 7:94. [PMID: 25520754 PMCID: PMC4268894 DOI: 10.1186/s13039-014-0094-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 11/25/2014] [Indexed: 01/02/2023] Open
Abstract
Background A 3.68 Mbp duplication of 8p23.1 defines the 8p23.1 duplication syndrome. The main features of this syndrome are developmental delay and/or learning problems. Results Here we present a patient with a 1.80 Mbp duplication in 8p23.1 and characteristic signs and symptoms of the syndrome, including delay of motor and speech development and intellectual disability. Discussion The case indicates that genes within this interval, in particular dosage sensitive genes SOX7 and TNKS1, and possibly MIR124-1 and MIR598 as well suffice to cause the pathognomonic features of the 8p23.1 duplication syndrome. Electronic supplementary material The online version of this article (doi:10.1186/s13039-014-0094-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Axel Weber
- Institut für Humangenetik, Justus-Liebig-Universität, Schlangenzahl 14, 35392 Giessen, Germany
| | - Angelika Köhler
- Institut für Humangenetik, Justus-Liebig-Universität, Schlangenzahl 14, 35392 Giessen, Germany
| | - Andreas Hahn
- Klinik für Kinderneurologie und Sozialpädiatrie, Justus-Liebig-Universität, Giessen, Germany
| | - Ulrich Müller
- Institut für Humangenetik, Justus-Liebig-Universität, Schlangenzahl 14, 35392 Giessen, Germany
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Long F, Wang X, Fang S, Xu Y, Sun K, Chen S, Xu R. A potential relationship among beta-defensins haplotype, SOX7 duplication and cardiac defects. PLoS One 2013; 8:e72515. [PMID: 24009689 PMCID: PMC3757027 DOI: 10.1371/journal.pone.0072515] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 07/11/2013] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To determine the pathogenesis of a patient born with congenital heart defects, who had appeared normal in prenatal screening. METHODS In routine prenatal screening, G-banding was performed to analyse the karyotypes of the family and fluorescence in situ hybridization was used to investigate the 22q11.2 deletion in the fetus. After birth, the child was found to be suffering from heart defects by transthoracic echocardiography. In the following study, sequencing was used to search for potential mutations in pivotal genes. SNP-array was employed for fine mapping of the aberrant region and quantitative real-time PCR was used to confirm the results. Furthermore, other patients with a similar phenotype were screened for the same genetic variations. To compare with a control, these variations were also assessed in the general population. RESULTS The child and his mother each had a region that was deleted in the beta-defensin repeats, which are usually duplicated in the general population. Besides, the child carried a SOX7-gene duplication. While this duplication was not detected in his mother, it was found in two other patients with cardiac defects who also had the similar deletion in the beta-defensin repeats. CONCLUSION The congenital heart defects of the child were probably caused by a SOX7-gene duplication, which may be a consequence of the partial haplotype of beta-defensin regions at 8p23.1. To our knowledge, this is the first congenital heart defect case found to have the haplotype of beta-defensin and the duplication of SOX7.
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Affiliation(s)
- Fei Long
- Scientific Research Center, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Xike Wang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Shaohai Fang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Yuejuan Xu
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Sun Chen
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
- * E-mail: (SC); (RX)
| | - Rang Xu
- Scientific Research Center, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
- * E-mail: (SC); (RX)
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Vera-Carbonell A, López-González V, Bafalliu JA, Piñero-Fernández J, Susmozas J, Sorli M, López-Pérez R, Fernández A, Guillén-Navarro E, López-Expósito I. Pre- and postnatal findings in a patient with a novel rec(8)dup(8q)inv(8)(p23.2q22.3) associated with San Luis Valley syndrome. Am J Med Genet A 2013; 161A:2369-75. [PMID: 23894102 DOI: 10.1002/ajmg.a.36103] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 05/30/2013] [Indexed: 01/30/2023]
Abstract
San Luis Valley syndrome, which is due to a recombinant chromosome 8 (SLV Rec8) found in Hispanic individuals from Southwestern United States, is a well-established syndrome associated with intellectual disabilities and, frequently, severe cardiac anomalies. We report for the first time on a Moroccan girl with a recombinant chromosome 8 prenatally diagnosed as SLV Rec8 by conventional cytogenetic studies. At birth, an oligo array-CGH (105 K) defined the breakpoints and the size of the imbalanced segments, with a deletion of ≈ 2.27 Mb (8p23.2-pter) and a duplication of ≈ 41.93 Mb (8q22.3-qter); thus this recombinant chromosome 8 differed from that previously reported in SLV Rec8 syndrome. The phenotypic characteristics associated with this SLV Rec8 genotype overlap those commonly found in patients with 8q duplication reported in the literature. We review SLV Rec8 and other chromosome 8 aberrations and suggest that the overexpression of cardiogenic genes located at 8q may be the cause of the cardiac defects in this patient.
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Affiliation(s)
- Ascensión Vera-Carbonell
- Sección de Citogenética, Centro de Bioquímica y Genética Clínica, Hospital U. Virgen de la Arrixaca, El Palmar, Murcia, Spain
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Burnside RD, Pappas JG, Sacharow S, Applegate C, Hamosh A, Gadi IK, Jaswaney V, Keitges E, Phillips KK, Potluri VR, Risheg H, Smith JL, Tepperberg JH, Schwartz S, Papenhausen P. Three cases of isolated terminal deletion of chromosome 8p without heart defects presenting with a mild phenotype. Am J Med Genet A 2013; 161A:822-8. [DOI: 10.1002/ajmg.a.35699] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2012] [Accepted: 09/01/2012] [Indexed: 01/30/2023]
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Abstract
The human ROCO proteins are a family of four proteins characterized by a conserved supradomain: a Ras-like GTPase domain. This domain consists of ROC (Ras of complex proteins) occurring in tandem with a COR (C-terminal of ROC) domain. Together, these proteins are linked to various pathologies including cancer and PD (Parkinson's disease). Despite an increasing research focus on these proteins, their functions in general, and their specific roles in disease, are still unknown. In the case of MASL1 (malignant fibrous histiocytoma amplified sequences with leucine-rich tandem repeats 1), a predicted oncoprotein in MFHs (malignant fibrous histiocytomas), there is a particular lack of information available in the literature. The aim of the present review is therefore to summarize the existing information on MASL1 and also to compile data that could be linked to MASL1 and thus help our understanding of this neglected ROCO protein.
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Barber JCK, Rosenfeld JA, Foulds N, Laird S, Bateman MS, Thomas NS, Baker S, Maloney VK, Anilkumar A, Smith WE, Banks V, Ellingwood S, Kharbutli Y, Mehta L, Eddleman KA, Marble M, Zambrano R, Crolla JA, Lamb AN. 8p23.1 duplication syndrome; common, confirmed, and novel features in six further patients. Am J Med Genet A 2013; 161A:487-500. [PMID: 23345203 DOI: 10.1002/ajmg.a.35767] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Accepted: 10/14/2012] [Indexed: 01/07/2023]
Abstract
The 8p23.1 duplication syndrome is a relatively rare genomic condition that has been confirmed with molecular cytogenetic methods in only 11 probands and five family members. Here, we describe another prenatal and five postnatal patients with de novo 8p23.1 duplications analyzed with oligonucleotide array comparative genomic hybridization (oaCGH). Of the common features, mild or moderate developmental delays and/or learning difficulties have been found in 11/12 postnatal probands, a variable degree of mild dysmorphism in 8/12 and congenital heart disease (CHD) in 4/5 prenatal and 3/12 postnatal probands. Behavioral problems, cleft lip and/or palate, macrocephaly, and seizures were confirmed as additional features among the new patients, and novel features included neonatal respiratory distress, attention deficit hyperactivity disorder (ADHD), ocular anomalies, balance problems, hypotonia, and hydrocele. The core duplication of 3.68 Mb contains 31 genes and microRNAs of which only GATA4, TNKS, SOX7, and XKR6 are likely to be dosage sensitive genes and MIR124-1 and MIR598 have been implicated in neurocognitive phenotypes. A combination of the duplication of GATA4, SOX7, and related genes may account for the variable penetrance of CHD. Two of the duplications were maternal and intrachromosomal in origin with maternal heterozygosity for the common inversion between the repeats in 8p23.1. These additional patients and the absence of the 8p23.1 duplications in published controls, indicate that the 8p23.1 duplication syndrome may now be considered a pathogenic copy number variation (pCNV) with an estimated population prevalence of 1 in 58,000.
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Affiliation(s)
- John C K Barber
- Faculty of Medicine, Department of Human Genetics and Genomic Medicine, University of Southampton, Southampton General Hospital, Southampton, UK.
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Guimiot F, Dupont C, Fuentes-Duarte A, Aboura A, Bazin A, Khung-Savatovsky S, Tillous-Borde I, Delezoide AL, Azancot A. Maternal transmission of interstitial 8p23.1 deletion detected during prenatal diagnosis. Am J Med Genet A 2012; 161A:208-13. [PMID: 23239632 DOI: 10.1002/ajmg.a.35690] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Accepted: 09/06/2012] [Indexed: 01/30/2023]
Abstract
We report on the first prenatally diagnosed interstitial 8p23.1 maternally inherited deletion. At 20 weeks of gestation (WG) the fetus was diagnosed with a complete atrioventricular canal. In infancy, the mother underwent a two-step cardiac surgery for an interrupted aortic arch type A associated to an inlet ventricular septal defect (VSD). A straddling of the tricuspid valve type B was confirmed during surgery. The outcome showed no cardiac failure or conduction anomalies. However, she presented with moderate intellectual disability. Classical and molecular cytogenetic studies on amniotic and maternal lymphocytes cells showed a nearly identical interstitial deletion of the 8p23.1 region encompassing the GATA4 gene locus (Mother: nt 6,913,337-12,580,828, fetus: nt 7,074,449-12,580,828) with no modification of the telomeric region. The relevance of our report is not only the maternal syndromic interstitial 8p23.1 deletion, but also maternal transmission which has never been reported before. The maternal and fetal phenotypes were not identical, however, even though they had the same cellular and molecular background: an alteration of the epithelial mesenchymal transition of the atrioventricular valvulo-septal complex where GATA4 plays a positive role in the regulation. We reviewed all cases of interstitial 8p23.1 deletions diagnosed either prenatally or postnatally.
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Affiliation(s)
- F Guimiot
- Department of Developmental Biology, Robert Debre Hospital, AP-HP, Paris, France.
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Longoni M, Lage K, Russell MK, Loscertales M, Abdul-Rahman OA, Baynam G, Bleyl SB, Brady PD, Breckpot J, Chen CP, Devriendt K, Gillessen-Kaesbach G, Grix AW, Rope AF, Shimokawa O, Strauss B, Wieczorek D, Zackai EH, Coletti CM, Maalouf FI, Noonan KM, Park JH, Tracy AA, Lee C, Donahoe PK, Pober BR. Congenital diaphragmatic hernia interval on chromosome 8p23.1 characterized by genetics and protein interaction networks. Am J Med Genet A 2012; 158A:3148-58. [PMID: 23165946 DOI: 10.1002/ajmg.a.35665] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 08/20/2012] [Indexed: 01/09/2023]
Abstract
Chromosome 8p23.1 is a common hotspot associated with major congenital malformations, including congenital diaphragmatic hernia (CDH) and cardiac defects. We present findings from high-resolution arrays in patients who carry a loss (n = 18) or a gain (n = 1) of sub-band 8p23.1. We confirm a region involved in both diaphragmatic and heart malformations. Results from a novel CNVConnect algorithm, prioritizing protein-protein interactions between products of genes in the 8p23.1 hotspot and products of previously known CDH causing genes, implicated GATA4, NEIL2, and SOX7 in diaphragmatic defects. Sequence analysis of these genes in 226 chromosomally normal CDH patients, as well as in a small number of deletion 8p23.1 patients, showed rare unreported variants in the coding region; these may be contributing to the diaphragmatic phenotype. We also demonstrated that two of these three genes were expressed in the E11.5-12.5 primordial mouse diaphragm, the developmental stage at which CDH is thought to occur. This combination of bioinformatics and expression studies can be applied to other chromosomal hotspots, as well as private microdeletions or microduplications, to identify causative genes and their interaction networks.
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Affiliation(s)
- Mauro Longoni
- Pediatric Surgical Research Laboratories, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.
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Ellison JW, Ravnan JB, Rosenfeld JA, Morton SA, Neill NJ, Williams MS, Lewis J, Torchia BS, Walker C, Traylor RN, Moles K, Miller E, Lantz J, Valentin C, Minier SL, Leiser K, Powell BR, Wilks TM, Shaffer LG. Clinical utility of chromosomal microarray analysis. Pediatrics 2012; 130:e1085-95. [PMID: 23071206 DOI: 10.1542/peds.2012-0568] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE To test the hypothesis that chromosomal microarray analysis frequently diagnoses conditions that require specific medical follow-up and that referring physicians respond appropriately to abnormal test results. METHODS A total of 46,298 postnatal patients were tested by chromosomal microarray analysis for a variety of indications, most commonly intellectual disability/developmental delay, congenital anomalies, dysmorphic features, and neurobehavioral problems. The frequency of detection of abnormalities associated with actionable clinical features was tallied, and the rate of physician response to a subset of abnormal tests results was monitored. RESULTS A total of 2088 diagnoses were made of more than 100 different disorders that have specific clinical features that warrant follow-up. The detection rate for these conditions using high-resolution whole-genome microarrays was 5.4%, which translates to 35% of all clinically significant abnormal test results identified in our laboratory. In a subset of cases monitored for physician response, appropriate clinical action was taken more than 90% of the time as a direct result of the microarray finding. CONCLUSIONS The disorders diagnosed by chromosomal microarray analysis frequently have clinical features that need medical attention, and physicians respond to the diagnoses with specific clinical actions, thus arguing that microarray testing provides clinical utility for a significant number of patients tested.
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Affiliation(s)
- Jay W Ellison
- Signature Genomic Laboratories, PerkinElmer, Inc, Spokane, Washington 99207, USA.
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Hoellen F, Weichert J. Sonographic diagnosis of multiple cardiovascular malformations in a fetus with an interstitial 8p23.1 deletion. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2012; 31:1689-1692. [PMID: 23011633 DOI: 10.7863/jum.2012.31.10.1689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
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Margari L, Di Cosola ML, Buttiglione M, Pansini A, Buonadonna AL, Craig F, Cariola F, Petruzzelli MG, Gentile M. Molecular cytogenetic characterization and genotype/phenotype analysis in a patient with a de novo 8p23.2p23.3 deletion/12p13.31p13.33 duplication. Am J Med Genet A 2012; 158A:1713-8. [PMID: 22639464 DOI: 10.1002/ajmg.a.35400] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2011] [Accepted: 03/12/2012] [Indexed: 11/08/2022]
Abstract
Genomic copy number imbalances are being increasingly identified as an important cause of intellectual disability (ID) and behavioral disturbances. This article reports the clinical features, and long term follow-up of a patient with neurodevelopmental, cognitive, and behavioral abnormalities associated with facial dysmorphism, CNS anomalies, and epilepsy. The karyotype was normal; array CGH testing revealed a de novo cryptic aberration with a terminal 8p23.2p23.3 deletion, and a concomitant 12p13.31p13.33 duplication, of 6.86 Mb, and 8.49 Mb, respectively. Our patient clinical features are compared to those of partial 8 monosomy and/or partial 12p trisomy cases reported in literature, in order to establish genotype-phenotype correlations. For some features, for example, electroencephalogram (EEG) abnormalities and epilepsy, both abnormalities seem to make a contribution, while most phenotypic traits have been assigned to 8p monosomy or to 12p trisomy, contributing to a tentative phenotype map for partial monosomy of the short arm of chromosome 8, and trisomy of the short arm of chromosome 12.
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Affiliation(s)
- Lucia Margari
- Department of Neurological and Psychiatric Sciences, Child and Adoloscence Neuropsychiatric Unit, University of Bari, Italy
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Sørensen KM, El-Segaier M, Fernlund E, Errami A, Bouvagnet P, Nehme N, Steensberg J, Hjortdal V, Soller M, Behjati M, Werge T, Kirchoff M, Schouten J, Tommerup N, Andersen PS, Larsen LA. Screening of congenital heart disease patients using multiplex ligation-dependent probe amplification: early diagnosis of syndromic patients. Am J Med Genet A 2012; 158A:720-5. [PMID: 22383218 DOI: 10.1002/ajmg.a.35214] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 11/10/2011] [Indexed: 11/07/2022]
Abstract
Recurrent copy number variants (CNVs) are found in a significant proportion of patients with congenital heart disease (CHD) and some of these CNVs are associated with other developmental defects. In some syndromic patients, CHD may be the first presenting symptom, thus screening of patients with CHD for CNVs in specific genomic regions may lead to early diagnosis and awareness of extracardiac symptoms. We designed a multiplex ligation-dependent probe amplification (MLPA) assay specifically for screening of CHD patients. The MLPA assay allows for simultaneous analysis of CNVs in 25 genomic regions previously associated with CHD. We screened blood samples from 402 CHD patients and identified 14 rare CNVs in 13 (3.2%) patients. Five CNVs were de novo and six where inherited from a healthy parent. The MLPA screen led to early syndrome diagnosis in two of these patients. We conclude that the MLPA assay detects clinically relevant CNVs and suggest that it could be used within pediatric cardiology as a first tier screen to detect clinically relevant CNVs and identify syndromic patients at an early stage.
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Nakayama T, Nabatame S, Saito Y, Nakagawa E, Shimojima K, Yamamoto T, Kaneko Y, Okumura K, Fujie H, Uematsu M, Komaki H, Sugai K, Sasaki M. 8p deletion and 9p duplication in two children with electrical status epilepticus in sleep syndrome. Seizure 2012; 21:295-9. [PMID: 22300624 DOI: 10.1016/j.seizure.2012.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Revised: 01/04/2012] [Accepted: 01/04/2012] [Indexed: 11/18/2022] Open
Abstract
We describe two individuals with the same chromosomal aberrations derived from an unbalanced translocation between chromosomes 8p and 9p, who presented with intellectual disabilities, dysmorphic features, and localization-related epilepsy. Several years after the onset of epilepsy, aggravation of widespread epileptic discharges during sleep resulted in the emergence of absence and/or atonic seizures in both patients; one patient additionally presented with psychomotor deterioration. These symptoms completely disappeared after treatment with ethosuximide and benzodiazepines, and marked improvement was observed in electroencephalographic findings. We review the clinical features of der(8)t(8;9) with particular focus on epileptic complications. We conclude that particular types of chromosomal aberrations may have a propensity to develop the condition categorized as electrical status epilepticus in sleep.
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Affiliation(s)
- Tojo Nakayama
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi-cho, Kodaira, Tokyo 187-8551, Japan
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