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Chen CP, Peng CR, Chang TY, Guo WY, Chen YN, Wu PS, Town DD, Wang W. Prenatal diagnosis of chromosome 8p23.1 microdeletion by array comparative genomic hybridization using uncultured amniocytes in a pregnancy associated with fetal partial corpus callosum agenesis and schizencephaly. Taiwan J Obstet Gynecol 2016; 54:797-8. [PMID: 26701010 DOI: 10.1016/j.tjog.2015.10.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/30/2015] [Accepted: 10/23/2015] [Indexed: 11/26/2022] Open
Affiliation(s)
- Chih-Ping Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan; Department of Biotechnology, Asia University, Taichung, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang-Ming University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Cheng-Ran Peng
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Wan-Yuo Guo
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yen-Ni Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Dai-Dyi Town
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan; Department of Bioengineering, Tatung University, Taipei, Taiwan
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Long F, Wang X, Fang S, Xu Y, Sun K, Chen S, Xu R. A potential relationship among beta-defensins haplotype, SOX7 duplication and cardiac defects. PLoS One 2013; 8:e72515. [PMID: 24009689 PMCID: PMC3757027 DOI: 10.1371/journal.pone.0072515] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 07/11/2013] [Indexed: 01/30/2023] Open
Abstract
OBJECTIVE To determine the pathogenesis of a patient born with congenital heart defects, who had appeared normal in prenatal screening. METHODS In routine prenatal screening, G-banding was performed to analyse the karyotypes of the family and fluorescence in situ hybridization was used to investigate the 22q11.2 deletion in the fetus. After birth, the child was found to be suffering from heart defects by transthoracic echocardiography. In the following study, sequencing was used to search for potential mutations in pivotal genes. SNP-array was employed for fine mapping of the aberrant region and quantitative real-time PCR was used to confirm the results. Furthermore, other patients with a similar phenotype were screened for the same genetic variations. To compare with a control, these variations were also assessed in the general population. RESULTS The child and his mother each had a region that was deleted in the beta-defensin repeats, which are usually duplicated in the general population. Besides, the child carried a SOX7-gene duplication. While this duplication was not detected in his mother, it was found in two other patients with cardiac defects who also had the similar deletion in the beta-defensin repeats. CONCLUSION The congenital heart defects of the child were probably caused by a SOX7-gene duplication, which may be a consequence of the partial haplotype of beta-defensin regions at 8p23.1. To our knowledge, this is the first congenital heart defect case found to have the haplotype of beta-defensin and the duplication of SOX7.
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Affiliation(s)
- Fei Long
- Scientific Research Center, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Xike Wang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Shaohai Fang
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Yuejuan Xu
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Kun Sun
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
| | - Sun Chen
- Department of Pediatric Cardiology, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
- * E-mail: (SC); (RX)
| | - Rang Xu
- Scientific Research Center, Xinhua Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, P.R. China
- * E-mail: (SC); (RX)
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Longoni M, Lage K, Russell MK, Loscertales M, Abdul-Rahman OA, Baynam G, Bleyl SB, Brady PD, Breckpot J, Chen CP, Devriendt K, Gillessen-Kaesbach G, Grix AW, Rope AF, Shimokawa O, Strauss B, Wieczorek D, Zackai EH, Coletti CM, Maalouf FI, Noonan KM, Park JH, Tracy AA, Lee C, Donahoe PK, Pober BR. Congenital diaphragmatic hernia interval on chromosome 8p23.1 characterized by genetics and protein interaction networks. Am J Med Genet A 2012; 158A:3148-58. [PMID: 23165946 DOI: 10.1002/ajmg.a.35665] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2012] [Accepted: 08/20/2012] [Indexed: 01/09/2023]
Abstract
Chromosome 8p23.1 is a common hotspot associated with major congenital malformations, including congenital diaphragmatic hernia (CDH) and cardiac defects. We present findings from high-resolution arrays in patients who carry a loss (n = 18) or a gain (n = 1) of sub-band 8p23.1. We confirm a region involved in both diaphragmatic and heart malformations. Results from a novel CNVConnect algorithm, prioritizing protein-protein interactions between products of genes in the 8p23.1 hotspot and products of previously known CDH causing genes, implicated GATA4, NEIL2, and SOX7 in diaphragmatic defects. Sequence analysis of these genes in 226 chromosomally normal CDH patients, as well as in a small number of deletion 8p23.1 patients, showed rare unreported variants in the coding region; these may be contributing to the diaphragmatic phenotype. We also demonstrated that two of these three genes were expressed in the E11.5-12.5 primordial mouse diaphragm, the developmental stage at which CDH is thought to occur. This combination of bioinformatics and expression studies can be applied to other chromosomal hotspots, as well as private microdeletions or microduplications, to identify causative genes and their interaction networks.
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Affiliation(s)
- Mauro Longoni
- Pediatric Surgical Research Laboratories, Massachusetts General Hospital, Boston, Massachusetts 02114, USA.
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Ballarati L, Cereda A, Caselli R, Selicorni A, Recalcati MP, Maitz S, Finelli P, Larizza L, Giardino D. Genotype–phenotype correlations in a new case of 8p23.1 deletion and review of the literature. Eur J Med Genet 2011; 54:55-9. [DOI: 10.1016/j.ejmg.2010.10.003] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Accepted: 10/05/2010] [Indexed: 01/30/2023]
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Soong YK, Wang TH, Lee YS, Chen CP, Chang CL, Ho SY, Chao AS, Cheng PJ, Chang SD. Genome-wide detection of uniparental disomy in a fetus with intrauterine growth restriction using genotyping microarrays. Taiwan J Obstet Gynecol 2009; 48:152-8. [PMID: 19574178 DOI: 10.1016/s1028-4559(09)60277-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE To present the clinical and molecular features of a fetus with confined trisomy 16 mosaicism with maternal uniparental disomy (UPD), using various prenatal diagnostic techniques. MATERIALS AND METHODS Chromosomal karyotyping was performed on samples of chorionic villi, amniotic fluid cells, amniotic membrane, umbilical cord, fetal skin, and placenta from a fetus with elevated nuchal translucency. Polymorphic short tandem repeat markers and Affymetrix single nucleotide polymorphism (SNP) mapping chips were used for molecular analyses. RESULTS Karyotypes from chorionic villi and amniocytes showed 47,XX,+16 and 46,XX, respectively. Short tandem repeat markers on chromosome 16 suggested maternal UPD for chromosome 16. Affymetrix 10K SNP mapping chips were used to simultaneously confirm the difference in karyotypes between the placenta and amniocytes and to diagnose UPD for chromosome 16. Fetal ultrasonography and magnetic resonance imaging identified severe intrauterine growth restriction (IUGR). Autopsy revealed IUGR, incomplete lobulation of bilateral lungs, and malrotation of the intestines. The karyotypes of umbilical cord, fetal skin and amniotic membrane were 46,XX, and the trisomy 16 karyotype appeared to be confined to the placenta. CONCLUSION UPD should be investigated as a possible etiology in all cases of unexplained IUGR. SNP microarrays can be useful for confirming this diagnosis.
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Affiliation(s)
- Yung-Kuei Soong
- Department of Obstetrics and Gynecology, Lin-Kou Medical Center, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan.
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Wat MJ, Shchelochkov OA, Holder AM, Breman AM, Dagli A, Bacino C, Scaglia F, Zori RT, Cheung SW, Scott DA, Kang SHL. Chromosome 8p23.1 deletions as a cause of complex congenital heart defects and diaphragmatic hernia. Am J Med Genet A 2009; 149A:1661-77. [PMID: 19606479 DOI: 10.1002/ajmg.a.32896] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Recurrent interstitial deletion of a region of 8p23.1 flanked by the low copy repeats 8p-OR-REPD and 8p-OR-REPP is associated with a spectrum of anomalies that can include congenital heart malformations and congenital diaphragmatic hernia (CDH). Haploinsufficiency of GATA4 is thought to play a critical role in the development of these birth defects. We describe two individuals and a monozygotic twin pair discordant for anterior CDH all of whom have complex congenital heart defects caused by this recurrent interstitial deletion as demonstrated by array comparative genomic hybridization. To better define the genotype/phenotype relationships associated with alterations of genes on 8p23.1, we review the spectrum of congenital heart and diaphragmatic defects that have been reported in individuals with isolated GATA4 mutations and interstitial, terminal, and complex chromosomal rearrangements involving the 8p23.1 region. Our findings allow us to clearly define the CDH minimal deleted region on chromosome 8p23.1 and suggest that haploinsufficiency of other genes, in addition to GATA4, may play a role in the severe cardiac and diaphragmatic defects associated with 8p23.1 deletions. These findings also underscore the importance of conducting a careful cytogenetic/molecular analysis of the 8p23.1 region in all prenatal and postnatal cases involving congenital defects of the heart and/or diaphragm.
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Affiliation(s)
- Margaret J Wat
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, USA
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