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Maddhesiya J, Mohapatra B. Understanding the Genetic and Non-Genetic Interconnections in the Aetiology of Syndromic Congenital Heart Disease: An Updated Review: Part 2. Curr Cardiol Rep 2024; 26:167-178. [PMID: 38358608 DOI: 10.1007/s11886-024-02020-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/08/2024] [Indexed: 02/16/2024]
Abstract
PURPOSE OF REVIEW Approximately 30% of syndromic cases diagnosed with CHD, which lure us to further investigate the molecular and clinical challenges behind syndromic CHD (sCHD). The aetiology of sCHD in a majority of cases remains enigmatic due to involvement of multiple factors, namely genetic, epigenetic and environmental modifiable risk factors for the development of the disease. Here, we aim to update the role of genetic contributors including chromosomal abnormalities, copy number variations (CNVs) and single gene mutations in cardiac specific genes, maternal lifestyle conditions, environmental exposures and epigenetic modifiers in causing CHD in different genetic syndromes. RECENT FINDINGS The exact aetiology of sCHD is still unknown. With the advancement of next-generation technologies including WGS, WES, transcriptome, proteome and methylome study, numerous novel genes and pathways have been identified. Moreover, our recent knowledge regarding epigenetic and environmental regulation during cardiogenesis is still evolving and may solve some of the mystery behind complex sCHD. Here, we focus to understand how the complex combination of genetic, environmental and epigenetic factors interact to interfere with developmental pathways, culminating into cardiac and extracardiac defects in sCHD.
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Affiliation(s)
- Jyoti Maddhesiya
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India
| | - Bhagyalaxmi Mohapatra
- Cytogenetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, Uttar Pradesh, India.
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2
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Yang C, Cui X, Xu L, Zhang Q, Tang S, Zhang M, Xie N. Highly precise breakpoint detection of chromosome balanced translocation in chronic myelogenous leukaemia: Case series. J Cell Mol Med 2022; 26:4721-4726. [PMID: 35903038 PMCID: PMC9443941 DOI: 10.1111/jcmm.17500] [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: 10/17/2021] [Revised: 06/21/2022] [Accepted: 06/26/2022] [Indexed: 11/29/2022] Open
Abstract
Chronic myelogenous leukaemia (CML) has a special phenomenon of chromosome translocation, which is called Philadelphia chromosome translocation. However, the detailed connection of this structure is troublesome and expensive to be identified. Low‐coverage whole genome sequencing (LCWGS) could not only detect the previously unknown chromosomal translocation, but also provide the breakpoint candidate small region (with an accuracy of ±200 bases). Importantly, the sequencing cost of LCWGS is about US$300. Then, with the Sanger DNA sequencing, the precise breakpoint can be determined at a single base level. In our project, with LCWGS, BCR and ABL1 are successfully identified to be disrupted in three CML patients (at chr22:23,632,356 and chr9:133,590,450; chr22:23,633,748 and chr9:133,635,781; chr22: 23,631,831 and chr9:133,598,513, respectively). Due to the reconnection after chromosome breakage, classical fusion gene (BCR::ABL1) was found in bone marrow and peripheral blood. The precise breakpoints were helpful to investigate the pathogenic mechanism of CML and could better guide the classification of CML subtypes. This LCWGS method is universal and can be used to detect all diseases related to chromosome variation, such as solid tumours, liquid tumours and birth defects.
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Affiliation(s)
- Chuanchun Yang
- Guangdong Medical University, Zhanjiang, China.,CheerLand Biological Technology Co., Ltd, Shenzhen, China
| | - Xiaoli Cui
- CheerLand Biological Technology Co., Ltd, Shenzhen, China
| | - Lei Xu
- Department of Hematology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Qian Zhang
- Department of Hematology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Shanmei Tang
- CheerLand Biological Technology Co., Ltd, Shenzhen, China
| | - Mengmeng Zhang
- CheerLand Biological Technology Co., Ltd, Shenzhen, China
| | - Ni Xie
- Guangdong Medical University, Zhanjiang, China.,Shenzhen Second People's Hospital, Shenzhen, China
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3
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Chu G, Li P, Wen J, Zheng G, Zhao Y, He R. Copy Number Variation Analysis of 5p Deletion Provides Accurate Prenatal Diagnosis and Reveals Candidate Pathogenic Genes. Front Med (Lausanne) 2022; 9:883565. [PMID: 35911393 PMCID: PMC9329539 DOI: 10.3389/fmed.2022.883565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 06/21/2022] [Indexed: 11/19/2022] Open
Abstract
Objective 5p deletion syndrome, that characterized by cat-like cry and peculiar timbre of voice, is believed to be one of the most common pathogenic copy number variations (CNVs). Variable critical regions on 5p involving a variety of genes contribute to the phenotypic heterogeneity without specific correlation. The objective of this study was to examine the genotype–phenotype correlation of 5p deletion syndrome, and to redefine 5p deletion syndrome relevant regions. In addition, we demonstrate the potential use of whole genome sequencing (WGS) to identify chromosomal breakpoints in prenatal diagnosis. Methods Three families with women undergoing prenatal diagnosis and two children were recruited. Karyotyping, CNV-seq, fluorescence in situ hybridization, WGS, and Sanger sequencing were performed to identify the chromosomal disorder. Results We reported three families and two children with CNVs of 5p deletion or combined 6p duplication. Five different sizes of 5p deletion were detected and their pathogenicity was determined, including 5p15.33-p15.31 [1–7,700,000, family1-variant of uncertain significance (VUS)], 5p15.33 (1–3,220,000, family 2-VUS), 5p15.33-p15.31 (1–7,040,000, family 3-VUS), 5p15.33-p15.31 (1–8,740,000, child 1-pathogenic) and 5p15.31-p15.1 (8,520,001–18,080,000, child 2-pathogenic). One duplication at 6p25.3-p24.3 (1–10,420,000) was detected and determined as likely pathogenic. The chromosomal breakpoints in family 3 were successfully identified by WGS. Conclusion Some critical genes that were supposed to be causative of the symptoms were identified. Relevant region in 5p deletion syndrome was redefined, and the chr5:7,700,000–8,740,000 region was supposed to be responsible for the cat-like cry. The great potential of WGS in detecting chromosomal translocations was demonstrated. Our findings may pave the way for further research on the prevention, diagnosis, and treatment of related diseases.
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Affiliation(s)
- Guoming Chu
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Pingping Li
- Department of Obstetrics and Gynecology, Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Shenyang, China
| | - Juan Wen
- Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, China
| | - Gaoyan Zheng
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yanyan Zhao
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, Shenyang, China
| | - Rong He
- Department of Clinical Genetics, Shengjing Hospital of China Medical University, Shenyang, China
- *Correspondence: Rong He,
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Prenatal Sonographic Features of Cri-du-Chat Syndrome: A Case Report and Analytical Literature Review. Diagnostics (Basel) 2022; 12:diagnostics12020421. [PMID: 35204510 PMCID: PMC8871365 DOI: 10.3390/diagnostics12020421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 01/28/2022] [Accepted: 02/04/2022] [Indexed: 11/16/2022] Open
Abstract
Cri-du-Chat syndrome (CdCS) is a rare but serious genetic disorder. Most cases occur de novo, without specific risk factors as an indication of invasive prenatal diagnosis. Moreover, no specific ultrasound findings have been reported to facilitate early detection. This study presents a case of CdCS with fetal ultrasound findings of cerebellar hypoplasia and peri-membranous ventricular septal defect (VSD), which are consistent with previous reports, as well as coarctation of the aorta and hypercoiling cord, which have never been described in CdCS before. Additionally, we performed an analytical literature review to identify the sonographic pattern facilitating prenatal diagnosis. Based on the review of 47 reported cases, most CdCS fetuses (87.2%) had ultrasound characteristics: cerebellar hypoplasia (29.8%), followed by cardiac abnormalities (19.1%), hydrops fetalis/fluid collection (17.0%), ventriculomegaly (14.9%), choroid plexus cyst (12.8%) and nasal bone hypoplasia (12.8%). Increased nuchal translucency/nuchal fold thickness was also common. This is the first study providing a fetal sonographic pattern of CdCS that may facilitate early diagnosis.
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Nowakowska BA, Pankiewicz K, Nowacka U, Niemiec M, Kozłowski S, Issat T. Genetic Background of Fetal Growth Restriction. Int J Mol Sci 2021; 23:ijms23010036. [PMID: 35008459 PMCID: PMC8744929 DOI: 10.3390/ijms23010036] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/17/2021] [Accepted: 12/19/2021] [Indexed: 12/14/2022] Open
Abstract
Fetal growth restriction (FGR) is one of the most formidable challenges in present-day antenatal care. Pathological fetal growth is a well-known factor of not only in utero demise in the third trimester, but also postnatal morbidity and unfavorable developmental outcomes, including long-term sequalae such as metabolic diseases, diabetic mellitus or hypertension. In this review, the authors present the current state of knowledge about the genetic disturbances responsible for FGR diagnosis, divided into fetal, placental and maternal causes (including preeclampsia), as well as their impact on prenatal diagnostics, with particular attention on chromosomal microarray (CMA) and noninvasive prenatal testing technique (NIPT).
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Affiliation(s)
- Beata Anna Nowakowska
- Department of Medical Genetics, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland;
- Correspondence: (B.A.N.); (K.P.); Tel.: +48-22-3277131 (B.A.N.); +48-22-3277044 (K.P.)
| | - Katarzyna Pankiewicz
- Department of Obstetrics and Gynecology, Institute of Mother and Child in Warsaw, Kasprzaka 17a, 01-211 Warsaw, Poland; (U.N.); (S.K.); (T.I.)
- Correspondence: (B.A.N.); (K.P.); Tel.: +48-22-3277131 (B.A.N.); +48-22-3277044 (K.P.)
| | - Urszula Nowacka
- Department of Obstetrics and Gynecology, Institute of Mother and Child in Warsaw, Kasprzaka 17a, 01-211 Warsaw, Poland; (U.N.); (S.K.); (T.I.)
| | - Magdalena Niemiec
- Department of Medical Genetics, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland;
| | - Szymon Kozłowski
- Department of Obstetrics and Gynecology, Institute of Mother and Child in Warsaw, Kasprzaka 17a, 01-211 Warsaw, Poland; (U.N.); (S.K.); (T.I.)
| | - Tadeusz Issat
- Department of Obstetrics and Gynecology, Institute of Mother and Child in Warsaw, Kasprzaka 17a, 01-211 Warsaw, Poland; (U.N.); (S.K.); (T.I.)
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6
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Peng Y, Yang S, Huang X, Pang J, Liu J, Hu J, Shen X, Tang C, Wang H. Whole Exome Sequencing Analysis in Fetal Skeletal Dysplasia Detected by Ultrasonography: An Analysis of 38 Cases. Front Genet 2021; 12:728544. [PMID: 34567078 PMCID: PMC8461062 DOI: 10.3389/fgene.2021.728544] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 08/05/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Skeletal dysplasias (SDs) are a heterogeneous group of genetic disorders that primarily affect bone and cartilage. This study aims to identify the genetic causes for fetal SDs, and evaluates the diagnostic yield of prenatal whole-exome sequencing (WES) for this disorder. Methods: WES was performed on 38 fetuses with sonographically identified SDs and normal results of karyotype and single nucleotide polymorphism (SNP) analysis. Candidate variants were selected by bioinformatics analysis, and verified by Sanger sequencing. Results: WES revealed pathogenic or likely pathogenic variants associated with SDs in 65.79% (25/38) of fetuses, variants of uncertain significance (VUS) in SDs-related genes in 10.53% (4/38) cases, and incidental findings in 31.58% (12/38) fetuses. The SDs-associated variants identified in the present study affected 10 genes, and 35.71% (10/28) of the variants were novel. Conclusion: WES has a high diagnostic rate for prenatal SDs, which improves pregnancy management, prenatal counseling and recurrence risk assessment for future pregnancies. The newly identified variants expanded mutation spectrum of this disorder.
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Affiliation(s)
- Ying Peng
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Shuting Yang
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Xiaoliang Huang
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Jialun Pang
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Jing Liu
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Jiancheng Hu
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | | | - Chengyuan Tang
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hua Wang
- Prenatal Diagnosis Center, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
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Nevado J, Bel-Fenellós C, Sandoval-Talamantes AK, Hernández A, Biencinto-López C, Martínez-Fernández ML, Barrúz P, Santos-Simarro F, Mori-Álvarez MÁ, Mansilla E, García-Santiago FA, Valcorba I, Sáenz-Rico B, Martínez-Frías ML, Lapunzina P. Deep Phenotyping and Genetic Characterization of a Cohort of 70 Individuals With 5p Minus Syndrome. Front Genet 2021; 12:645595. [PMID: 34394178 PMCID: PMC8362798 DOI: 10.3389/fgene.2021.645595] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 05/14/2021] [Indexed: 11/26/2022] Open
Abstract
Chromosome-5p minus syndrome (5p-Sd, OMIM #123450) formerly known as Cri du Chat syndrome results from the loss of genetic material at the distal region of the short arm of chromosome 5. It is a neurodevelopmental disorder of genetic cause. So far, about 400 patients have been reported worldwide. Individuals affected by this syndrome have large phenotypic heterogeneity. However, a specific phenotype has emerged including global developmental delay, microcephaly, delayed speech, some dysmorphic features, and a characteristic and monochromatic high-pitch voice, resembling a cat’s cry. We here describe a cohort of 70 patients with clinical features of 5p- Sd characterized by means of deep phenotyping, SNP arrays, and other genetic approaches. Individuals have a great clinical and molecular heterogeneity, which can be partially explained by the existence of additional significant genomic rearrangements in around 39% of cases. Thus, our data showed significant statistical differences between subpopulations (simple 5p deletions versus 5p deletions plus additional rearrangements) of the cohort. We also determined significant “functional” differences between male and female individuals.
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Affiliation(s)
- Julián Nevado
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
| | - Cristina Bel-Fenellós
- Departamento de Investigación y Psicología en Educación, Facultad de Educación, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - Ana Karen Sandoval-Talamantes
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain.,Departamento de Investigación y Psicología en Educación, Facultad de Educación, Universidad Complutense de Madrid (UCM), Madrid, Spain.,Servicio de Genética, Centro de Rehabilitacion Infantil Teleton (CRIT), Guadalajara, Mexico
| | - Adolfo Hernández
- Departamento de Economía Financiera y Actuarial y Estadística, Facultad de Comercio y Turismo, Universidad Complutense de Madrid, Madrid, Spain
| | - Chantal Biencinto-López
- Departamento de Investigación y Psicología en Educación, Facultad de Educación, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - María Luisa Martínez-Fernández
- Spanish Collaborative Study of Congenital Malformations (ECEMC), Research Unit on Congenital Anomalies (UIAC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Pilar Barrúz
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain
| | - Fernando Santos-Simarro
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
| | - María Ángeles Mori-Álvarez
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
| | - Elena Mansilla
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
| | - Fé Amalia García-Santiago
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
| | - Isabel Valcorba
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
| | - Belén Sáenz-Rico
- Departamento Estudios Educativos, Facultad de Educación, Universidad Complutense de Madrid, Madrid, Spain
| | - María Luisa Martínez-Frías
- Spanish Collaborative Study of Congenital Malformations (ECEMC), Research Unit on Congenital Anomalies (UIAC), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
| | - Pablo Lapunzina
- CIBERER, Centro de Investigación Biomédica en Red de Enfermedades Raras, Instituto de Salud Carlos (ISCIII), Madrid, Spain.,Instituto de Genética Médica y Molecular (INGEMM)-IdiPAZ, Hospital Universitario La Paz, Madrid, Spain.,ITHACA-European Reference Network-Hospital la Paz, Madrid, Spain
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Peng Y, Yang S, Xi H, Hu J, Jia Z, Pang J, Liu J, Yu W, Tang C, Wang H. Whole genome sequencing reveals translocation breakpoints disrupting TP63 gene underlying split hand/foot malformation in a Chinese family. Mol Genet Genomic Med 2021; 9:e1604. [PMID: 33471964 PMCID: PMC8104154 DOI: 10.1002/mgg3.1604] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 01/08/2023] Open
Abstract
Background Split hand/foot malformation (SHFM) is a congenital limb developmental disorder, which impairs the fine activities of hand/foot in the affected individuals seriously. SHFM is commonly inherited as an autosomal dominant disease with incomplete penetrance. Chromosomal aberrations such as copy number variations and translocations have been linked to SHFM. This study aimed to identify the genetic cause for three patients with bilateral hand and foot malformation in a Chinese family. Methods Karyotyping, single‐nucleotide polymorphism (SNP) array, whole exome sequencing, whole genome sequencing, and Sanger sequencing were applied to identify the pathogenic variant. Results Karyotyping revealed that the three patients had balanced reciprocal translocation, 46, XX, t(3;15) (q29;q22). SNP array identified no pathogenic copy number variation in the proband. Trio‐WES (fetus–mother–father) sequencing results revealed no pathogenic variants in the genes related to SHFM. Whole‐genome low‐coverage mate‐pair sequencing (WGL‐MPS), breakpoint PCR, and Sanger sequencing identified the breakpoints disrupting TP63 in the patients, but not in healthy family members. Conclusion This study firstly reports that a translocation breakpoint disrupting TP63 contributes to the SHFM in a Chinese family, which expands our knowledge of genetic risk and counseling underlying SHFM. It provides a basis for genetic counseling and prenatal diagnosis (preimplantation genetic diagnosis) for this family.
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Affiliation(s)
- Ying Peng
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Shuting Yang
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Hui Xi
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Jiancheng Hu
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Zhengjun Jia
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Jialun Pang
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Jing Liu
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Wenxian Yu
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
| | - Chengyuan Tang
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hua Wang
- Department of Medical Genetics, National Health Commission Key Laboratory of Birth Defects Research, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, China
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9
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Peng Y, Pang J, Hu J, Jia Z, Xi H, Ma N, Yang S, Liu J, Huang X, Tang C, Wang H. Clinical and molecular characterization of 12 prenatal cases of Cri-du-chat syndrome. Mol Genet Genomic Med 2020; 8:e1312. [PMID: 32500674 PMCID: PMC7434726 DOI: 10.1002/mgg3.1312] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/20/2020] [Accepted: 04/27/2020] [Indexed: 12/12/2022] Open
Abstract
Background This study aimed to define the molecular basis for 12 prenatal cases of Cri‐du‐chat syndrome (CdCS) and the potential genotyping‐phenotyping association. Methods Karyotyping and single nucleotide polymorphism array analyses for copy number variants were performed. Results Nine cases had 5p terminal deletions and three had 5p interstitial deletions, and these cases had variable deletion sizes with partial overlapping. Phenotypically, besides intrauterine growth restriction (IUGR) and brain as well as heart abnormalities, hypospadias, and lung dysplasia were observed. Potential genetic causes for specific phenotypes in these cases were identified. Conclusion This study defined the molecular bases for the patients of CdCS, which is important for genetic counseling for these families. The findings of present study expand the clinical features of CdCS in the fetal period, and provided important information for further refining the genotypic–phenotypic correlations for this syndrome.
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Affiliation(s)
- Ying Peng
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Jialun Pang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Jiancheng Hu
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Zhengjun Jia
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Hui Xi
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Na Ma
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Shuting Yang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Jing Liu
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Xiaoliang Huang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
| | - Chengyuan Tang
- Department of Nephrology, Hunan Key Laboratory of Kidney Disease and Blood Purification, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hua Wang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan, China.,National Health Commission Key Laboratory of Birth Defects Research, Prevention and Treatment, Changsha, Hunan, China
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