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Di Nora A, Lena G, Giugno A, Di Mari A, Smilari P, Minardi C, Pavone P. Pure Interstitial 7q21.3-q 31.1 Duplication: A Rare Segmental Genomic Aneuploidy: Case Report and Review of Cases with Distal and Similar Segment Involved. Glob Med Genet 2021; 8:123-128. [PMID: 34430965 PMCID: PMC8378915 DOI: 10.1055/s-0041-1729546] [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] [Indexed: 11/29/2022] Open
Abstract
In children with developmental delay (DD) and neurologic impairment, diagnosis can be challenging because of the wide spectrum of causes. Since the last decade, the use of array comparative genomic hybridization (CGH) offered a great contribution to get a diagnosis in complex phenotypes. The chromosome 7 is subject of interest in medical genetics because of its frequent association with chromosome aberrations, rearrangements, and deletions involving clinical manifestations. We hereby reported a 3-year-old male child patient with severe neuro-DD, craniofacial dysmorphisms, and pulmonary stenosis, whose array CGH analysis disclosed a duplication of 14.4 Mb on chromosome 7 (7q21.3-7q31.1). By reviewing the current literature to date, we first reported on neurologic and dysmorphic anomalies related to this rearrangement which was not previously reported.
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Affiliation(s)
- Alessandra Di Nora
- Department of Clinical and Experimental Medicine, Postgraduate Training Program in Pediatrics, University of Catania, Catania, Italy
| | - Germana Lena
- Department of Clinical and Experimental Medicine, Postgraduate Training Program in Pediatrics, University of Catania, Catania, Italy
| | - Andrea Giugno
- Department of Clinical and Experimental Medicine, Postgraduate Training Program in Pediatrics, University of Catania, Catania, Italy
| | - Alessia Di Mari
- Department of Radiology, Postgraduate Training Program in Radiology, University of Catania, Catania, Italy
| | - Pierluigi Smilari
- Department of Pediatric and Pediatric Neurology, University of Catania, Catania, Italy
| | - Carmelo Minardi
- Department of Anaesthesia and Intensive Care, University Hospital “G. Rodolico” of Catania, Catania, Italy
| | - Piero Pavone
- Department of Pediatric and Pediatric Neurology, University of Catania, Catania, Italy
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Blyth U, Craciunas L, Hudson G, Choudhary M. Maternal germline factors associated with aneuploid pregnancy loss: a systematic review. Hum Reprod Update 2021; 27:866-884. [PMID: 33969392 DOI: 10.1093/humupd/dmab010] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 03/02/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Miscarriage describes the spontaneous loss of pregnancy before the threshold of viability; the vast majority occur before 12 weeks of gestation. Miscarriage affects one in four couples and is the most common complication of pregnancy. Chromosomal abnormalities of the embryo are identified in ∼50% of first trimester miscarriages; aneuploidy accounts for 86% of these cases. The majority of trisomic miscarriages are of maternal origin with errors occurring during meiotic division of the oocytes. Chromosome segregation errors in oocytes may be sporadic events secondary to advancing maternal age; however, there is increasing evidence to suggest possible maternal germline contributions to this. OBJECTIVE AND RATIONALE The objective of this review was to appraise critically the existing evidence relating to maternal germline factors associated with pregnancy loss secondary to embryo aneuploidy, identify limitations in the current evidence base and establish areas requiring further research. SEARCH METHODS The initial literature search was performed in September 2019 and updated in January 2021 using the electronic databases OVID MEDLINE, EMBASE and the Cochrane Library. No time or language restrictions were applied to the searches and only primary research was included. Participants were women who had suffered pregnancy loss secondary to numerical chromosomal abnormalities of the embryo. Study identification and subsequent data extraction were performed by two authors independently. The Newcastle-Ottawa Scale was used to judge the quality of the included studies. The results were synthesized narratively. OUTCOMES The literature search identified 2198 titles once duplicates were removed, of which 21 were eligible for inclusion in this systematic review. They reported on maternal germline factors having variable degrees of association with pregnancy loss of aneuploid origin. The Online Mendelian Inheritance in Man (OMIM) gene ontology database was used as a reference to establish the functional role currently attributed to the genes reported. The majority of the cases reported and included were secondary to the inheritance of maternal structural factors such as Robertsonian translocations, deletions and insertions. Germline factors with a plausible role in aneuploid pregnancy loss of maternal origin included skewed X-inactivation and CGG repeats in the fragile X mental retardation (FMR1) gene. Studies that reported the association of single gene mutations with aneuploid pregnancy loss were conflicting. Single gene mutations with an uncertain or no role in aneuploid pregnancy loss included mutations in synaptonemal complex protein 3 (SYCP3), mitotic polo-like kinase 4 (PLK4) and meiotic stromal antigen 3 (STAG3) spindle integrity variants and 5,10-methylenetetrahydrofolate reductase (MTHFR). WIDER IMPLICATIONS Identifying maternal genetic factors associated with an increased risk of aneuploidy will expand our understanding of cell division, non-disjunction and miscarriage secondary to embryo aneuploidy. The candidate germline factors identified may be incorporated in a screening panel for women suffering miscarriage of aneuploidy aetiology to facilitate counselling for subsequent pregnancies.
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Affiliation(s)
- Ursula Blyth
- Newcastle Fertility Centre at Life, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Laurentiu Craciunas
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin Hudson
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Meenakshi Choudhary
- Newcastle Fertility Centre at Life, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
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Yuan S, Cheng D, Luo K, Li X, Hu L, Hu H, Wu X, Xie P, Lu C, Lu G, Lin G, Gong F, Tan YQ. Reproductive risks and preimplantation genetic testing intervention for X-autosome translocation carriers. Reprod Biomed Online 2021; 43:73-80. [PMID: 33931368 DOI: 10.1016/j.rbmo.2021.03.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 03/11/2021] [Accepted: 03/14/2021] [Indexed: 11/26/2022]
Abstract
RESEARCH QUESTION What is the genetic cause of multiple congenital disabilities in a girl with a maternal balanced X-autosome translocation [t(X-A)]? Is preimplantation genetic testing (PGT), to distinguish non-carrier from euploid/balanced embryos and prioritize transfer, an effective and applicable strategy for couples with t(X-A)? DESIGN Karyotype analysis, whole-exome sequencing and X inactivation analysis were performed for a girl with congenital cardiac anomalies, language impairment and mild neurodevelopmental delay. PGT based on next-generation sequencing after microdissecting junction region (MicroSeq) to distinguish non-carrier and carrier embryos was used in three couples with a female t(X-A) carrier (cases 1-3). RESULTS The girl carried a maternal balanced translocation 46,X,t(X;1)(q28;p31.1). Whole-exome sequencing revealed no monogenic mutation related to her phenotype, but she carried a rare skewed inactivation of the translocated X chromosome that spread to the adjacent interstitial 1p segment, contrary to her mother. All translocation breakpoints in cases 1-3 were successfully identified and each couple underwent one PGT cycle. Thirty oocytes were retrieved, and 13 blastocysts were eligible for biopsy, of which six embryos had a balanced translocation and only four were non-carriers. Three cryopreserved embryo transfers with non-carrier status embryos resulted in the birth of two healthy children (one girl and one boy), who were subsequently confirmed to have normal karyotypes. CONCLUSIONS This study reported a girl with multiple congenital disabilities associated with a maternal balanced t(X-A) and verified that the distinction between non-carrier and carrier embryos is an effective and applicable strategy to avoid transferring genetic and reproductive risks to the offspring of t(X-A) carriers.
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Affiliation(s)
- Shimin Yuan
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China
| | - Dehua Cheng
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China
| | - Keli Luo
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China
| | - Xiurong Li
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China
| | - Liang Hu
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China; Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha Hunan, China; National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China; HC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha Hunan, China
| | - Hao Hu
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China
| | - Xianhong Wu
- National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China
| | - Pingyuan Xie
- National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China
| | - Changfu Lu
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China; Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha Hunan, China; National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China; HC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha Hunan, China
| | - Guangxiu Lu
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China; Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha Hunan, China; National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China; HC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha Hunan, China
| | - Ge Lin
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China; Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha Hunan, China; National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China; HC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha Hunan, China
| | - Fei Gong
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China; Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha Hunan, China; National Engineering and Research Center of Human Stem Cells, Changsha Hunan, China; HC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha Hunan, China.
| | - Yue-Qiu Tan
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha Hunan, China; Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha Hunan, China; Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha Hunan, China; HC Key Laboratory of Human Stem Cell and Reproductive Engineering (Central South University), Changsha Hunan, China.
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Wang H, Xiao F, Dong X, Lu Y, Cheng G, Wang L, Lu W, Yang L, Chen L, Kang W, Li L, Pan X, Wei Q, Zhuang D, Chen D, Yin Z, Yang L, Ni Q, Liu R, Li G, Zhang P, Qian Y, Li X, Peng X, Wang Y, Liu F, Wang D, Li H, Shen C, Qian L, Cao Y, Wu B, Zhou W. Diagnostic and clinical utility of next-generation sequencing in children born with multiple congenital anomalies in the China neonatal genomes project. Hum Mutat 2021; 42:434-444. [PMID: 33502061 DOI: 10.1002/humu.24170] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/25/2020] [Accepted: 01/24/2021] [Indexed: 12/16/2022]
Abstract
Multiple congenital anomalies (MCAs) at birth have emerged as an important cause of neonatal morbidity and mortality. This study aimed to investigate the genetic causes and characteristics of clinical outcomes in a large cohort of neonates with MCAs. Clinical exome sequencing/exome sequencing/genome sequencing were undertaken from December 1, 2016 to December 1, 2019 to detect single nucleotide variations (SNVs) and copy number variations (CNVs) simultaneously in individuals who met the inclusion criteria. A total of 588 neonates with MCAs were enrolled. One hundred sixty-one patients received diagnosis, with 71 CNVs and 90 SNVs detected, the overall diagnostic rate being 27.38%. Cardiovascular malformation was the most common anomaly (60%) and accounted for the top symptomatic proportion in both CNVs and SNVs. As the number of involved system increased from 2 to 3-4, and then to ≥5, the overall diagnostic rate increased gradually from 23.1% to 30.5%, and then to 52.2%, respectively. Patients who received genetic diagnoses were offered better clinical management or were referred to the specific disease clinic. In conclusion, this large cohort study demonstrates that both CNVs and SNVs contribute to the genetic causes of MCAs, and earlier genetic assertion may lead to better clinical management for patients.
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Affiliation(s)
- Huijun Wang
- Center for Molecular Medicine, Children's Hospital of Fudan University, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Feifan Xiao
- Center for Molecular Medicine, Children's Hospital of Fudan University, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Xinran Dong
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Yulan Lu
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Guoqiang Cheng
- Key Laboratory of Neonatal Diseases, Division of Neonatology, Children's Hospital of Fudan University, Ministry of Health, Shanghai, China
| | - Laishuan Wang
- Key Laboratory of Neonatal Diseases, Division of Neonatology, Children's Hospital of Fudan University, Ministry of Health, Shanghai, China
| | - Wei Lu
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Lin Yang
- Department of Endocrinology and Inherited Metabolic Diseases, Children's Hospital of Fudan University, Shanghai, China
| | - Liping Chen
- Department of Neonatology, Jiangxi Provincial Children's Hospital, Nanchang, Jiangxi, China
| | - Wenqing Kang
- Department of Neonatology, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, Henan, China
| | - Long Li
- Department of Neonatology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang, China
| | - Xinnian Pan
- Department of Neonatology, Maternal and Child Health Care Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Qiufen Wei
- Department of Neonatology, Maternal and Child Health Care Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China
| | - Deyi Zhuang
- Department of Pediatrics, Xiamen Children's Hospital, Xiamen, Fujian, China
| | - Dongmei Chen
- Department of Neonatal Intensive Care Unit, Quanzhou Maternity and Children's Hospital, Quanzhou, Fujian, China
| | - Zhaoqing Yin
- Department of Neonatology, The People's Hospital of Dehong, Dehong, Yunnan, China
| | - Ling Yang
- Department of Neonatology, Hainan Women and Children's Medical Center, Haikou, Hainan, China
| | - Qi Ni
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Renchao Liu
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Gang Li
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Ping Zhang
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Yanyan Qian
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Xu Li
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaomin Peng
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Yao Wang
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Fang Liu
- Cardiovascular Center, Children's Hospital of Fudan University, Shanghai, China
| | - Dahui Wang
- Department of Pediatric Orthopedics, Children's Hospital of Fudan University, Shanghai, China
| | - Hao Li
- Department of Cerebral Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Chun Shen
- Department of Pediatric Surgery, Children's Hospital of Fudan University, Shanghai, China
| | - Liling Qian
- Department of Pneumology, Children's Hospital of Fudan University, Shanghai, China
| | - Yun Cao
- Key Laboratory of Neonatal Diseases, Division of Neonatology, Children's Hospital of Fudan University, Ministry of Health, Shanghai, China
| | - Bingbing Wu
- Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China
| | - Wenhao Zhou
- Center for Molecular Medicine, Children's Hospital of Fudan University, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Center for Molecular Medicine, Children's Hospital of Fudan University, Shanghai, China.,Key Laboratory of Neonatal Diseases, Division of Neonatology, Children's Hospital of Fudan University, Ministry of Health, Shanghai, China
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Chakraborty A, Panda SK, Mohakud NK, Roy D, Padhi S, Koh SW, Hande MP, Banerjee B. A Child with Partial Trisomy 4 (q26 - qterminal) Resulting from Paternally Inherited Translocation (4:18) Associated with Multiple Congenital Anomalies and Death. Genome Integr 2019; 10:1. [PMID: 31160964 PMCID: PMC6540766 DOI: 10.4103/genint.genint_4_18] [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] [Indexed: 11/17/2022] Open
Abstract
Parental balanced reciprocal translocations can result in partial aneuploidy in the offspring due to unbalanced meiotic segregation during gametogenesis. Herein, we report the phenotypic and cytogenetic characterization in a 9-day-old male child with partial trisomy of chromosome 4. Karyotyping of the proband and parents was performed along with multicolor fluorescence in situ hybridization (mFISH) of paternal chromosomes. Conventional cytogenetic analysis by karyotyping showed 47,XY,der(18),t(4;18)(q26;q22),+4 in proband, and the paternal karyotype was found as 47,XY,der(18),t(4;18)(q26;q22). mFISH analysis on paternal chromosomal preparations confirmed both region and origin of the balanced translocation. In this study, karyotyping helped us to identify both numerical and structural anomalies in the proband, and mFISH helped us to confirm our cytogenetic findings. Therefore, cytogenetic screening of both partners is recommended before pregnancy to rule out or confirm the presence of any numerical or structural anomaly in one, both, or none of the partners.
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Affiliation(s)
- Abhik Chakraborty
- Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Santosh Kumar Panda
- Department of Paediatrics, Kalinga Institute of Medical Sciences, KIIT University, Bhubaneswar, Odisha, India
| | - Nirmal Kumar Mohakud
- Department of Paediatrics, Kalinga Institute of Medical Sciences, KIIT University, Bhubaneswar, Odisha, India
| | - Debarshi Roy
- Division of Cytogenetics, inDNA Life Sciences Private Limited, Bhubaneswar, Odisha, India
| | - Swatishree Padhi
- Division of Cytogenetics, inDNA Life Sciences Private Limited, Bhubaneswar, Odisha, India
| | - Shu Wen Koh
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Manoor Prakash Hande
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Birendranath Banerjee
- Molecular Stress and Stem Cell Biology Group, School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India.,Division of Cytogenetics, inDNA Life Sciences Private Limited, Bhubaneswar, Odisha, India
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