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Papamichail M, Eleftheriades A, Manolakos E, Papamichail A, Christopoulos P, Manegold-Brauer G, Eleftheriades M. Prenatal diagnosis of 18p deletion and 8p trisomy syndrome: literature review and report of a novel case. BMC Womens Health 2024; 24:241. [PMID: 38622524 PMCID: PMC11017580 DOI: 10.1186/s12905-024-03081-4] [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: 10/02/2023] [Accepted: 04/07/2024] [Indexed: 04/17/2024] Open
Abstract
18p deletion syndrome constitutes one of the most frequent autosomal terminal deletion syndromes, affecting one in 50,000 live births. The syndrome has un-specific clinical features which vary significantly between patients and may overlap with other genetic conditions. Its prenatal description is extremely rare as the fetal phenotype is often not present during pregnancy. Trisomy 8p Syndrome is characterized by heterogenous phenotype, with the most frequent components to be cardiac malformation, developmental and intellectual delay. Its prenatal diagnosis is very rare due to the unspecific sonographic features of the affected fetuses. We present a very rare case of a fetus with multiple anomalies diagnosed during the second trimester whose genomic analysis revealed a 18p Deletion and 8p trisomy Syndrome. This is the first case where this combination of DNA mutations has been described prenatally and the second case in general. The presentation of this case, as well as the detailed review of all described cases, aim to expand the existing knowledge regarding this rare condition facilitating its diagnosis in the future.
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Affiliation(s)
- Maria Papamichail
- Postgraduate Programme "Maternal Fetal Medicine" Medical School, National & Kapodistrian University of Athens, Athens, Greece
| | - Anna Eleftheriades
- Department of Obstetrics and Gynaecology, Women' Hospital, University Hospital of Basel, University of Basel, Basel, Switzerland.
| | - Emmanouil Manolakos
- Clinical Laboratory Genetics, Access To Genome (ATG), Athens-Thessaloniki-Greece, Athens, Greece
| | | | - Panagiotis Christopoulos
- 2nd Department of Obstetrics and Gynecology, Medical School, Aretaieio University Hospital, National & Kapodistrian University of Athens, Athens, Greece
| | - Gwendolin Manegold-Brauer
- Department of Gynaecological Ultrasound and Prenatal Diagnostics, Women' Hospital, University Hospital of Basel, University of Basel, Basel, Switzerland
| | - Makarios Eleftheriades
- 2nd Department of Obstetrics and Gynecology, Medical School, Aretaieio University Hospital, National & Kapodistrian University of Athens, Athens, Greece
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2
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Chen CP, Hung FY, Chen SW, Wu FT, Pan YT, Wu PS, Chern SR, Lee CC, Lee MS, Wang W. Molecular cytogenetic characterization of de novo concomitant distal 8p deletion of 8p23.3p23.1 and Xp and Xq deletion of Xp22.13q28 due to an unbalanced X;8 translocation detected by amniocentesis. Taiwan J Obstet Gynecol 2023; 62:128-131. [PMID: 36720525 DOI: 10.1016/j.tjog.2022.01.010] [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: 01/07/2022] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE We present molecular cytogenetic characterization of de novo concomitant distal 8p deletion of 8p23.3p23.1 and Xp and Xq deletion of Xp22.13q28 due to an unbalanced X;8 translocation detected by amniocentesis. CASE REPORT A 33-year-old primigravid woman underwent amniocentesis at 18 weeks of gestation because of a Down syndrome risk of 1/52 at the first-trimester maternal serum screening calculated from 0.29 multiples of the median (MoM) of pregnancy associated plasma protein-A (PAPP-A), 1.14 MoM of free β-hCG and 0.46 MoM of placental growth factor (PlGF). Amniocentesis revealed a karyotype of 45,X,add(8)(p23.1). The parental karyotypes were normal. Array comparative genomic hybridization (aCGH) analysis on the DNA extracted from cultured amniocytes revealed a 137-Mb deletion of Xp22.13q28 and a 10.53-Mb deletion of 8p23.3p23.1. The karyotype thus was 45,X,der(8)t(X;8)(p22.13;p23.1). Prenatal ultrasound revealed pericardial effusion and skin edema. The pregnancy was subsequently terminated, and a 568-g malformed fetus was delivered with hypertelorism and low-set ears. The cord blood had a karyotype of 45,X,der(8)t(X;8)(p22.13;p23.1). aCGH analysis of the cord blood revealed the result of arr [GRCH37 (hg19)] 8p23.3p23.1 (191,530-10,724,642) × 1.0, arr Xp22.13q28 (18,194,098-155,232,907) × 1.0. CONCLUSION aCGH analysis is useful elucidating the genetic nature of an aberrant chromosome with an additional maternal of unknown origin attached to a chromosome terminal region.
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Affiliation(s)
- Chih-Ping Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan.
| | - Fang-Yu Hung
- Department of Obstetrics and Gynecology, Hsinchu MacKay Memorial Hospital, Hsinchu, Taiwan
| | - Shin-Wen Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Fang-Tzu Wu
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Yen-Ting Pan
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | | | - Schu-Rern Chern
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | - Chen-Chi Lee
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Meng-Shan Lee
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
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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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4
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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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Hao D, Li Y, Chen L, Wang X, Wang M, Yu Y. Inherited unbalanced translocation (4p16.3p15.32 duplication/8p23.3p23.2deletion) in the four generation pedigree with intellectual disability/developmental delay. Mol Cytogenet 2021; 14:35. [PMID: 34238319 PMCID: PMC8268195 DOI: 10.1186/s13039-021-00552-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 04/19/2021] [Indexed: 11/11/2022] Open
Abstract
Chromosomal copy number variants (CNVs) are an important cause of congenital malformations and mental retardation. This study reported a large Chinese pedigree (4-generation, 76 members) with mental retardation caused by chromosome microduplication/microdeletion. There were 10 affected individuals with intellectual disability (ID), developmental delay (DD), and language delay phenotypes. SNP array analysis was performed in the proband and eight patients and found all of them had a microduplication of chromosome 4p16.3p15.2 and a microdeletion of chromosome 8p23.3p23.2. The high-resolution karyotyping analysis of the proband had unbalanced karyotype [46, XY, der(8)t(4;8)(p15.2;p23.1)mat], his mother had balanced karyotype [46, XX, t(4;8) (p15.2;p23.1)], whereas his father had normal karyotype [46,XY]. Fluorescence in situ hybridization (FISH) analysis further confirmed that the proband’s mother had a balanced translocation between the short arm terminal segment of chromosome 4 and the short arm end segment of chromosome 8, ish t(4;8)(8p + ,4q + ;4p + ,8q +). In conclusion, all the patients inherited chromosomes 8 with 4p16.3p15.2 duplication and 8p23.3p23.2 deletion from their parental balanced translocation, which might be the cause of the prevalence of intellectual disability. Meanwhile, 8p23.3p23.2 deletion, rather than 4p16.3p15.2 duplication might cause a more severe clinical syndrome.
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Affiliation(s)
- Dongmei Hao
- Department of Reproductive Medicine Center, General Hospital of Northern Theater Command, Shenyang, Liaoning, 110016, People's Republic of China.,General Hospital of Northern Theater Command, Postgraduate Training Base of Jinzhou Medical University, No. 83. Wenhua Road, Shenhe District, Shenyang, Liaoning, 110016, People's Republic of China
| | - Yajuan Li
- General Hospital of Northern Theater Command, Postgraduate Training Base of Jinzhou Medical University, No. 83. Wenhua Road, Shenhe District, Shenyang, Liaoning, 110016, People's Republic of China
| | - Lisha Chen
- Department of Reproductive Medicine Center, General Hospital of Northern Theater Command, Shenyang, Liaoning, 110016, People's Republic of China
| | - Xiliang Wang
- Department of Reproductive Medicine Center, General Hospital of Northern Theater Command, Shenyang, Liaoning, 110016, People's Republic of China
| | - Mengxing Wang
- Department of Reproductive Medicine Center, General Hospital of Northern Theater Command, Shenyang, Liaoning, 110016, People's Republic of China
| | - Yuexin Yu
- Department of Reproductive Medicine Center, General Hospital of Northern Theater Command, Shenyang, Liaoning, 110016, People's Republic of China. .,General Hospital of Northern Theater Command, Postgraduate Training Base of Jinzhou Medical University, No. 83. Wenhua Road, Shenhe District, Shenyang, Liaoning, 110016, People's Republic of China.
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6
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Brereton RE, Nickerson SL, Woodward KJ, Edwards T, Sivamoorthy S, Ramos Vasques Walters F, Chabros V, Marchin V, Grumball T, Kennedy D, Uzaraga J, Peverall J, Arscott G, Beilby J, Choong CS, Townshend S, Azmanov DN. Further heterogeneity in Silver-Russell syndrome: PLAG1 deletion in association with a complex chromosomal rearrangement. Am J Med Genet A 2021; 185:3136-3145. [PMID: 34223693 DOI: 10.1002/ajmg.a.62391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/21/2021] [Accepted: 05/31/2021] [Indexed: 12/21/2022]
Abstract
Silver-Russell syndrome (SRS) is a rare genetic condition primarily characterized by growth restriction and facial dysmorphisms. While hypomethylation of H19/IGF2:IG-DMR (imprinting control region 1 [IC1]) located at 11p15.5 and maternal uniparental disomy of chromosome 7 (upd[7]mat) are the most common genetic mechanisms responsible for SRS, the expanding body of literature describing alternative causative variants suggests SRS is a highly heterogeneous condition, also involving variation in the HMGA2-PLAG1-IGF2 pathway. We report a familial PLAG1 deletion in association with a complex chromosomal rearrangement. We describe two siblings with differing unbalanced chromosomal rearrangements inherited from a mother with a 5-breakpoint balanced complex rearrangement involving chromosomes 2, 8, and 21. The overlapping but diverse phenotypes in the siblings were characterized by shared SRS-like features, underlined by a PLAG1 whole gene deletion. Genetic analysis and interpretation was further complicated by a meiotic recombination event occurring in one of the siblings. This family adds to the limited literature available on PLAG1-related SRS. We have reviewed all currently known cases aiming to define the associated phenotype and guide future genetic testing strategies. The heterogeneity of SRS is further expanded by the involvement of complex cytogenomic abnormalities, imposing requirements for a comprehensive approach to testing and genetic counseling.
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Affiliation(s)
- Rebecca E Brereton
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Sarah L Nickerson
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Karen J Woodward
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia.,Pathology and Laboratory Medicine, Medical School, The University of Western Australia Faculty of Health and Medical Sciences, Perth, Western Australia, Australia
| | - Tracey Edwards
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Soruba Sivamoorthy
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Fabiana Ramos Vasques Walters
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Vicki Chabros
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Vanessa Marchin
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Tanya Grumball
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Dagmara Kennedy
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Joan Uzaraga
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Joanne Peverall
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Gillian Arscott
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - John Beilby
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia.,Pathology and Laboratory Medicine, Medical School, The University of Western Australia Faculty of Health and Medical Sciences, Perth, Western Australia, Australia.,The University of Western Australia School of Biomedical Sciences, Nedlands, Western Australia, Australia
| | - Catherine S Choong
- Department of Endocrinology, Perth Children's Hospital, Nedlands, Western Australia, Australia.,Paediatrics, Medical School, Faculty of Health and Medical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Sharron Townshend
- Genetic Services of Western Australia, King Edward Memorial Hospital, Subiaco, Western Australia, Australia
| | - Dimitar N Azmanov
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, QEII Medical Centre, Nedlands, Western Australia, Australia.,Pathology and Laboratory Medicine, Medical School, The University of Western Australia Faculty of Health and Medical Sciences, Perth, Western Australia, Australia
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7
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Chen CP, Ko TM, Wang LK, Chern SR, Wu PS, Chen SW, Wu FT, Chen LF, Wang W. Prenatal diagnosis of partial monosomy 8p (8p23.2→pter) and partial trisomy 15q (15q21.2→qter) and incidental detection of a familial chromosome translocation of paternal origin in a pregnancy associated with increased nuchal translucency and an abnormal maternal serum screening result. Taiwan J Obstet Gynecol 2021; 60:775-777. [PMID: 34247824 DOI: 10.1016/j.tjog.2021.05.034] [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: 05/13/2021] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE We present partial monosomy 8p (8p23.2→pter) and partial trisomy 15q (15q21.2→qter) and incidental detection of a familial chromosome translocation of paternal origin in a pregnancy associated with increased nuchal translucency (NT) and an abnormal maternal serum screening result. CASE REPORT A 29-year-old primigravid woman underwent chorionic villus sampling (CVS) at 13 weeks of gestation because of an increased NT thickness of 3.2 mm at 12 weeks of gestation and an abnormal maternal serum screening for Down syndrome result with a calculated risk of 1/29. Her husband was 33 years old, and there was no family history of congenital malformations. CVS revealed a derived chromosome 8 or der(8). Cytogenetic analysis of the parents revealed a karyotype of 46,XY,t(8;15)(p21.3;q13) in the father and a karyotype of 46,XX in the mother. The CVS result was 46,XY,der(8)t(8;15)(p21.3;q13)pat. The woman requested for amniocentesis at 16 weeks of gestation. Array comparative genomic hybridization (aCGH) analysis on the DNA extracted from uncultured amniocytes revealed a result of arr 8p23.3p23.2 (191,530-2,625,470) × 1.0, arr 15q21.2q26.3 (50,903,432-102,338,129) × 3.0 with a 2.434-Mb deletion of 8p23.3-p23.2 including DLGAP2, CLN8 and ARHGEF10, and a 51.435-Mb duplication of 15q21.2-q26.3 including CYP19A1 and IGF1R. Conventional cytogenetic analysis of cultured amniocytes revealed the result of 46,XY,der(8) t(8;15)(p23.2;q21.2)pat in the fetus. The pregnancy was subsequently terminated, and a malformed fetus was delivered with characteristic craniofacial dysmorphism. CONCLUSION Maternal serum screening and NT screening may incidentally detect familial unbalanced reciprocal translocations, and aCGH analysis is useful for a precise determination of the breakpoints of the translocation and the involvement of the related genes under such a circumstance.
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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 Chiao Tung University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
| | - Tsang-Ming Ko
- Genephile Bioscience Laboratory, Ko's Obstetrics and Gynecology, Taipei, Taiwan
| | - Liang-Kai Wang
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Schu-Rern Chern
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
| | | | - Shin-Wen Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Fang-Tzu Wu
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Li-Feng Chen
- Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan
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8
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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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9
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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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10
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Crippa M, Malatesta P, Bonati MT, Trapasso F, Fortunato F, Annesi G, Larizza L, Labate A, Finelli P, Perrotti N, Gambardella A. A familial t(4;8) translocation segregates with epilepsy and migraine with aura. Ann Clin Transl Neurol 2020; 7:855-859. [PMID: 32315120 PMCID: PMC7261755 DOI: 10.1002/acn3.51040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 03/11/2020] [Indexed: 01/03/2023] Open
Abstract
Three relatives carrying a t(4;8)(p15.2;p23.2) translocation had juvenile myoclonic epilepsy, self‐limited photosensitive occipital epilepsy and migraine with aura. The t(4;8) translocation interrupted the coding sequence of CSMD1 gene and occurred immediately to the 3’UTR of STIM2 gene. STIM2 was overexpressed in the patient carrying the unbalanced translocation, and all three individuals had a single functional copy of CSMD1. Array CGH study disclosed that these three individuals also carried a deletion at 5q12.3 that involves the RGS7BP gene. The overall results favor the view that CSMD1, STIM2, and RGS7BP genes could contribute to epilepsy and migraine phenotypes in our family.
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Affiliation(s)
- Milena Crippa
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Paola Malatesta
- Institute of Medical Genetics, University Magna Graecia, Catanzaro, Italy
| | - Maria Teresa Bonati
- Clinic of Medical Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Francesco Trapasso
- Institute of Medical Genetics, University Magna Graecia, Catanzaro, Italy
| | | | - Grazia Annesi
- Institute of Molecular Bioimaging and Physiology, National Research Council, Catanzaro, Italy
| | - Lidia Larizza
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Angelo Labate
- Institute of Neurology, University Magna Graecia, Catanzaro, Italy.,Institute of Molecular Bioimaging and Physiology, National Research Council, Catanzaro, Italy
| | - Palma Finelli
- Research Laboratory of Medical Cytogenetics and Molecular Genetics, IRCCS Istituto Auxologico Italiano, Milan, Italy.,Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Nicola Perrotti
- Institute of Medical Genetics, University Magna Graecia, Catanzaro, Italy
| | - Antonio Gambardella
- Institute of Neurology, University Magna Graecia, Catanzaro, Italy.,Institute of Molecular Bioimaging and Physiology, National Research Council, Catanzaro, Italy
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11
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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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12
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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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13
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Bateman MS, Collinson MN, Bunyan DJ, Collins AL, Duncan P, Firth R, Harrison V, Homfray T, Huang S, Kirk B, Lachlan KL, Maloney VK, Barber JCK. Incomplete penetrance, variable expressivity, or dosage insensitivity in four families with directly transmitted unbalanced chromosome abnormalities. Am J Med Genet A 2017; 176:319-329. [DOI: 10.1002/ajmg.a.38564] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 09/15/2017] [Accepted: 11/13/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Mark S. Bateman
- Wessex Regional Genetics LaboratorySalisbury NHS Foundation TrustSalisburyUK
| | - Morag N. Collinson
- Wessex Regional Genetics LaboratorySalisbury NHS Foundation TrustSalisburyUK
| | - David J. Bunyan
- Wessex Regional Genetics LaboratorySalisbury NHS Foundation TrustSalisburyUK
| | - Amanda L. Collins
- Wessex Clinical Genetics ServiceSouthampton University Hospitals NHS Foundation TrustPrincess Anne HospitalSouthamptonUK
| | - Philippa Duncan
- Wessex Regional Genetics LaboratorySalisbury NHS Foundation TrustSalisburyUK
| | - Rachel Firth
- Wessex Clinical Genetics ServiceSouthampton University Hospitals NHS Foundation TrustPrincess Anne HospitalSouthamptonUK
| | - Victoria Harrison
- Wessex Clinical Genetics ServiceSouthampton University Hospitals NHS Foundation TrustPrincess Anne HospitalSouthamptonUK
| | | | - Shuwen Huang
- National Genetics Reference Laboratory (Wessex)Salisbury NHS Foundation TrustSalisburyUK
| | - Beth Kirk
- Wessex Regional Genetics LaboratorySalisbury NHS Foundation TrustSalisburyUK
| | - Katherine L. Lachlan
- Wessex Clinical Genetics ServiceSouthampton University Hospitals NHS Foundation TrustPrincess Anne HospitalSouthamptonUK
| | - Viv K. Maloney
- Wessex Regional Genetics LaboratorySalisbury NHS Foundation TrustSalisburyUK
| | - John C. K. Barber
- Department of Human Genetics and Genomic MedicineUniversity of SouthamptonSouthampton General HospitalSouthamptonUK
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14
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Borlot F, Regan BM, Bassett AS, Stavropoulos DJ, Andrade DM. Prevalence of Pathogenic Copy Number Variation in Adults With Pediatric-Onset Epilepsy and Intellectual Disability. JAMA Neurol 2017; 74:1301-1311. [PMID: 28846756 DOI: 10.1001/jamaneurol.2017.1775] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Importance Copy number variation (CNV) is an important cause of neuropsychiatric disorders. Little is known about the role of CNV in adults with epilepsy and intellectual disability. Objectives To evaluate the prevalence of pathogenic CNVs and identify possible candidate CNVs and genes in patients with epilepsy and intellectual disability. Design, Setting, and Participants In this cross-sectional study, genome-wide microarray was used to evaluate a cohort of 143 adults with unexplained childhood-onset epilepsy and intellectual disability who were recruited from the Toronto Western Hospital epilepsy outpatient clinic from January 1, 2012, through December 31, 2014. The inclusion criteria were (1) pediatric seizure onset with ongoing seizure activity in adulthood, (2) intellectual disability of any degree, and (3) no structural brain abnormalities or metabolic conditions that could explain the seizures. Main Outcomes and Measures DNA screening was performed using genome-wide microarray platforms. Pathogenicity of CNVs was assessed based on the American College of Medical Genetics guidelines. The Residual Variation Intolerance Score was used to evaluate genes within the identified CNVs that could play a role in each patient's phenotype. Results Of the 2335 patients, 143 probands were investigated (mean [SD] age, 24.6 [10.8] years; 69 male and 74 female). Twenty-three probands (16.1%) and 4 affected relatives (2.8%) (mean [SD] age, 24.1 [6.1] years; 11 male and 16 female) presented with pathogenic or likely pathogenic CNVs (0.08-18.9 Mb). Five of the 23 probands with positive results (21.7%) had more than 1 CNV reported. Parental testing revealed de novo CNVs in 11 (47.8%), with CNVs inherited from a parent in 4 probands (17.4%). Sixteen of 23 probands (69.6%) presented with previously cataloged human genetic disorders and/or defined CNV hot spots in epilepsy. Eight nonrecurrent rare CNVs that overlapped 1 or more genes associated with intellectual disability, autism, and/or epilepsy were identified: 2p16.1-p15 duplication, 6p25.3-p25.1 duplication, 8p23.3p23.1 deletion, 9p24.3-p23 deletion, 10q11.22-q11.23 duplication, 12p13.33-13.2 duplication, 13q34 deletion, and 16p13.2 duplication. Five genes are of particular interest given their potential pathogenicity in the corresponding phenotypes and least tolerability to variation: ABAT, KIAA2022, COL4A1, CACNA1C, and SMARCA2. ABAT duplication was associated with Lennox-Gastaut syndrome and KIAA2022 deletion with Jeavons syndrome. Conclusions and Relevance The high prevalence of pathogenic CNVs in this study highlights the importance of microarray analysis in adults with unexplained childhood-onset epilepsy and intellectual disability. Additional studies and comparison with similar cases are required to evaluate the effects of deletions and duplications that overlap specific genes.
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Affiliation(s)
- Felippe Borlot
- Epilepsy Genetics Program, Toronto Western Hospital, Krembil Neuroscience Centre, University of Toronto, Toronto, Ontario, Canada.,Clinical Neurosciences Center, Department of Neurology, University of Utah, Salt Lake City
| | - Brigid M Regan
- Epilepsy Genetics Program, Toronto Western Hospital, Krembil Neuroscience Centre, University of Toronto, Toronto, Ontario, Canada
| | - Anne S Bassett
- Clinical Genetics Research Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - D James Stavropoulos
- Department of Pediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Danielle M Andrade
- Epilepsy Genetics Program, Toronto Western Hospital, Krembil Neuroscience Centre, University of Toronto, Toronto, Ontario, Canada.,Division of Neurology, Krembil Neuroscience Centre, Toronto Western Hospital, University of Toronto, Toronto, Ontario, Canada
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15
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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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16
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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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17
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Reis VNDS, Kitajima JP, Tahira AC, Feio-dos-Santos AC, Fock RA, Lisboa BCG, Simões SN, Krepischi ACV, Rosenberg C, Lourenço NC, Passos-Bueno MR, Brentani H. Integrative Variation Analysis Reveals that a Complex Genotype May Specify Phenotype in Siblings with Syndromic Autism Spectrum Disorder. PLoS One 2017; 12:e0170386. [PMID: 28118382 PMCID: PMC5261619 DOI: 10.1371/journal.pone.0170386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 12/31/2016] [Indexed: 12/30/2022] Open
Abstract
It has been proposed that copy number variations (CNVs) are associated with increased risk of autism spectrum disorder (ASD) and, in conjunction with other genetic changes, contribute to the heterogeneity of ASD phenotypes. Array comparative genomic hybridization (aCGH) and exome sequencing, together with systems genetics and network analyses, are being used as tools for the study of complex disorders of unknown etiology, especially those characterized by significant genetic and phenotypic heterogeneity. Therefore, to characterize the complex genotype-phenotype relationship, we performed aCGH and sequenced the exomes of two affected siblings with ASD symptoms, dysmorphic features, and intellectual disability, searching for de novo CNVs, as well as for de novo and rare inherited point variations—single nucleotide variants (SNVs) or small insertions and deletions (indels)—with probable functional impacts. With aCGH, we identified, in both siblings, a duplication in the 4p16.3 region and a deletion at 8p23.3, inherited by a paternal balanced translocation, t(4, 8) (p16; p23). Exome variant analysis found a total of 316 variants, of which 102 were shared by both siblings, 128 were in the male sibling exome data, and 86 were in the female exome data. Our integrative network analysis showed that the siblings’ shared translocation could explain their similar syndromic phenotype, including overgrowth, macrocephaly, and intellectual disability. However, exome data aggregate genes to those already connected from their translocation, which are important to the robustness of the network and contribute to the understanding of the broader spectrum of psychiatric symptoms. This study shows the importance of using an integrative approach to explore genotype-phenotype variability.
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MESH Headings
- Autism Spectrum Disorder/genetics
- Child
- Chromosomes, Human, Pair 4/genetics
- Chromosomes, Human, Pair 4/ultrastructure
- Chromosomes, Human, Pair 8/genetics
- Chromosomes, Human, Pair 8/ultrastructure
- Comparative Genomic Hybridization
- DNA Copy Number Variations
- Exome/genetics
- Female
- Gene Duplication
- Gene Regulatory Networks
- Genetic Association Studies
- Humans
- In Situ Hybridization, Fluorescence
- Intellectual Disability/genetics
- Learning Disabilities/genetics
- Male
- Megalencephaly/genetics
- Nerve Tissue Proteins/genetics
- Nucleic Acid Amplification Techniques
- Sequence Deletion
- Siblings
- Syndrome
- Translocation, Genetic
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Affiliation(s)
| | | | - Ana Carolina Tahira
- LIM23-Institute of Psychiatry, University of São Paulo School of Medicine, São Paulo, Brazil
| | | | - Rodrigo Ambrósio Fock
- Department of Morphology and Genetics, Federal University of São Paulo, São Paulo, Brazil
| | | | - Sérgio Nery Simões
- Department of Informatics, Federal Institute of Espírito Santo, Serra, Brazil
| | - Ana C. V. Krepischi
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo, São Paulo, Brazil
| | - Carla Rosenberg
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo, São Paulo, Brazil
| | - Naila Cristina Lourenço
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo, São Paulo, Brazil
| | - Maria Rita Passos-Bueno
- Department of Genetics and Evolutionary Biology, Institute of Biosciences, University of Sao Paulo, São Paulo, Brazil
| | - Helena Brentani
- LIM23-Institute of Psychiatry, University of São Paulo School of Medicine, São Paulo, Brazil
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18
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Pasipoularides A. Genomic translational research: Paving the way to individualized cardiac functional analyses and personalized cardiology. Int J Cardiol 2016; 230:384-401. [PMID: 28057368 DOI: 10.1016/j.ijcard.2016.12.097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 11/27/2016] [Accepted: 12/17/2016] [Indexed: 01/08/2023]
Abstract
For most of Medicine's past, the best that physicians could do to cope with disease prevention and treatment was based on the expected response of an average patient. Currently, however, a more personalized/precise approach to cardiology and medicine in general is becoming possible, as the cost of sequencing a human genome has declined substantially. As a result, we are witnessing an era of precipitous advances in biomedicine and bourgeoning understanding of the genetic basis of cardiovascular and other diseases, reminiscent of the resurgence of innovations in physico-mathematical sciences and biology-anatomy-cardiology in the Renaissance, a parallel time of radical change and reformation of medical knowledge, education and practice. Now on the horizon is an individualized, diverse patient-centered, approach to medical practice that encompasses the development of new, gene-based diagnostics and preventive medicine tactics, and offers the broadest range of personalized therapies based on pharmacogenetics. Over time, translation of genomic and high-tech approaches unquestionably will transform clinical practice in cardiology and medicine as a whole, with the adoption of new personalized medicine approaches and procedures. Clearly, future prospects far outweigh present accomplishments, which are best viewed as a promising start. It is now essential for pluridisciplinary health care providers to examine the drivers and barriers to the clinical adoption of this emerging revolutionary paradigm, in order to expedite the realization of its potential. So, we are not there yet, but we are definitely on our way.
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Affiliation(s)
- Ares Pasipoularides
- Department of Surgery, Duke University School of Medicine, Durham, NC, 27710, USA.
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Clark-Ganheart CA, Iqbal SN, Brown DL, Black S, Fries MH. Understanding the Limitations of Circulating Cell Free Fetal DNA: An Example of Two Unique Cases. ACTA ACUST UNITED AC 2014; 3:38-70. [PMID: 25298847 DOI: 10.14740/jcgo229w] [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: 11/11/2022]
Abstract
Circulating cell free fetal DNA (cffDNA) is an effective screening modality for fetal aneuploidy. We report two cases of false positive results. The first case involves a female, with self-reported Down syndrome. CffDNA returned positive for trisomy 18 leading to a maternal diagnosis of mosaicism chromosome 18 with normal fetal karyotype. The second case involves a patient with an anomalous fetal ultrasound and cffDNA positive for trisomy 13. Amniocentesis demonstrated a chromosome 8p duplication/deletion. False positive cffDNA may arise in clinical scenarios where diagnostic testing is clearly indicated. Practitioners should recognize the limitations of cffDNA.
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Affiliation(s)
| | - Sara N Iqbal
- Obstetrics and Gynecology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Donna L Brown
- Obstetrics and Gynecology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Susan Black
- Obstetrics and Gynecology, MedStar Washington Hospital Center, Washington, DC, USA
| | - Melissa H Fries
- Obstetrics and Gynecology, MedStar Washington Hospital Center, Washington, DC, USA
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