1
|
Chen CP. Genetic counseling of mosaic and non-mosaic tetrasomy 9p at prenatal diagnosis. Taiwan J Obstet Gynecol 2024; 63:633-636. [PMID: 39266143 DOI: 10.1016/j.tjog.2024.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2024] [Indexed: 09/14/2024] Open
Abstract
Genetic counseling of mosaic and non-mosaic tetrasomy 9p remains difficult because of the possible associated congenital abnormalities, cytogenetic discrepancy in various tissues, true-positive and false-positive diagnosis in non-invasive prenatal testing (NIPT), uniparental disomy (UPD) 9, tissue-limited mosaicism, perinatal progressive decrease of the aneuploid cell line, phenotypic normal carriers and possible favorable fetal outcome in the cases with mosaic tetrasomy 9p at amniocentesis. This article presents a comprehensive review of various counseling issues concerning mosaic and non-mosaic tetrasomy 9p at prenatal diagnosis, and the information provided is very useful for genetic counseling under such circumstances.
Collapse
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.
| |
Collapse
|
2
|
Yu J, Chen N, Chen M, Shen M, Qian Y, Dong M. Case Report: Prenatal diagnosis of fetal tetrasomy 9p initially identified by non-invasive prenatal testing. Front Genet 2022; 13:1020525. [PMID: 36386834 PMCID: PMC9662610 DOI: 10.3389/fgene.2022.1020525] [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: 08/16/2022] [Accepted: 10/10/2022] [Indexed: 12/02/2022] Open
Abstract
Tetrasomy 9p is a rare syndrome characterized by fetal growth restriction, Dandy-Walker malformation, cardiac anomalies, and facial abnormalities and is discovered by ultrasound during the prenatal examination. Herein, we report a fetus of tetrasomy 9p without obvious phenotypic manifestations during the first trimester that was identified by non-invasive prenatal testing (NIPT). NIPT revealed that the gain of 9p24.3–9p11 that was approximately 46.36 Mb in size. Karyotyping of amniocytes indicated an additional marker in all metaphase. Chromosome microarray and fluorescence in situ hybridization on uncultured amniocytes revealed tetrasomic of 9p24.3q13, and that the supernumerary chromosome is a dicentric isochromosome consisted of two copies of the 9p arm. Taken together, it was indicated that the fetal karyotype was 47,XY,+idic (9) (q13), and that multiple techniques are crucial to the prenatal diagnosis.
Collapse
Affiliation(s)
- Jialing Yu
- Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Na Chen
- Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Min Chen
- Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Min Shen
- Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yeqing Qian
- Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Minyue Dong
- Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- Key Laboratory of Reproductive Genetics Zhejiang University, Ministry of Education, Hangzhou, Zhejiang, China
- Key Laboratory of Women’s Reproductive Health of Zhejiang Province, Women’s Hospital, School of Medicine, Zhejiang University, Hangzhou, China
- *Correspondence: Minyue Dong,
| |
Collapse
|
3
|
Moczulska H, Pietrusinski M, Zezawska K, Serafin M, Skoczylas B, Jachymski T, Wojda K, Sieroszewski P, Borowiec M. Cases of tetrasomy 9p and trisomy 9p in prenatal diagnosis—Analysis of noninvasive and invasive test results. Front Genet 2022; 13:994455. [PMID: 36226175 PMCID: PMC9548563 DOI: 10.3389/fgene.2022.994455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/01/2022] [Indexed: 11/30/2022] Open
Abstract
Objective: Tetrasomy 9p and trisomy 9p are rare chromosomal aberrations. The phenotypes of tetrasomy 9p and trisomy 9p are variable. Most cases are diagnosed in the postnatal period. The study aims to analyze the prenatal phenotype of tetrasomy 9p and trisomy 9p in terms of ultrasound and screening tests. Methods: A set of 1573 prenatal tests performed from 2016 to 2021 was reviewed to identify all cases with trisomy 9p and tetrasomy 9p. In four cases with 9p gain, non-invasive and invasive test results were analyzed. Results: Four cases with the 9p gain were diagnosed in the prenatal period: two cases with tetrasomy 9p and two cases with trisomy 9p. Nasal bone hypoplasia and ventriculomegaly are common features of 9p gain. In two out of four cases with the 9p gain, an increased risk of trisomy 21 was found in the combined first-trimester screening test. Conclusion: Trisomy 9p and tetrasomy 9p are characterized by a variable phenotype in the prenatal period, manifesting in genetically abnormal fetuses. The tetrasomy 9p and trisomy 9p may suggest trisomy 21 in the first trimester.
Collapse
Affiliation(s)
- Hanna Moczulska
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
- *Correspondence: Hanna Moczulska,
| | | | - Karolina Zezawska
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| | - Marcin Serafin
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| | - Beata Skoczylas
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| | - Tomasz Jachymski
- Department of Fetal Medicine and Gynecology, Medical University of Lodz, Lodz, Poland
| | - Katarzyna Wojda
- Department of Fetal Medicine and Gynecology, Medical University of Lodz, Lodz, Poland
| | - Piotr Sieroszewski
- Department of Fetal Medicine and Gynecology, Medical University of Lodz, Lodz, Poland
| | - Maciej Borowiec
- Department of Clinical Genetics, Medical University of Lodz, Lodz, Poland
| |
Collapse
|
4
|
Abstract
Tetrasomy 9p is a chromosomal disorder characterized by the presence of a supernumerary chromosome. This rare abnormality exhibits a broad phenotypic variability and is not clearly distinguishable from other more frequent aneuploidies in the prenatal setting. We present two prenatal cases with dissimilar phenotypes, one with solely increased fetal nuchal translucency and one with multiple congenital anomalies, and discuss prior studies. These cases illustrate the difficulty of prenatally diagnosing this condition based on phenotypic information alone. We conclude that invasive prenatal diagnosis with (molecular) karyotyping is the best choice for the prenatal detection of tetrasomy 9p.
Collapse
|
5
|
Kok Kilic G, Pariltay E, Karaca E, Durmaz B, Ekici H, Imamoglu M, Okmen F, Akin H, Cogulu O. Prenatal diagnosis of a case with tetrasomy 9p confirmed by cytogenetics, FISH, microarray analysis and review. Taiwan J Obstet Gynecol 2022; 61:122-126. [PMID: 35181020 DOI: 10.1016/j.tjog.2021.10.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/07/2021] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE Tetrasomy 9p is a rare fetal condition. Cases are usually mosaic. Here, we present a non-mosaic tetrasomy 9p case with cytogenetic analysis, fluorescence in situ hybridization, microarray data, ultrasound findings, and phenotypic presentation. CASE REPORT A pregnancy was referred to cytogenetic analysis because of increased nuchal translucency in prenatal ultrasound at 13 weeks of gestation. Prenatal laboratory analysis revealed an extra marker chromosome with a non-mosaic pattern. Ultrasonographic findings were unilateral cleft lip and palate, micrognathia, and atrioventricular septal defect at the 17th week; additionally, ventriculomegaly, left axis deviation of the fetal heart, and a single umbilical artery were determined at the 23rd week. CONCLUSION Phenotypic severity in non-mosaic tetrasomy 9p widely differs depending on the chromosomal content. We recommend performing appropriate genetic tests in those pregnancies with the suspicion of tetrasomy 9p, evaluating the mosaic state, and following those cases with detailed ultrasonographic examinations.
Collapse
Affiliation(s)
- Gizem Kok Kilic
- Ege University, School of Medicine, Department of Medical Genetics, Izmir, Turkey.
| | - Erhan Pariltay
- Ege University, School of Medicine, Department of Medical Genetics, Izmir, Turkey
| | - Emin Karaca
- Ege University, School of Medicine, Department of Medical Genetics, Izmir, Turkey
| | - Burak Durmaz
- Ege University, School of Medicine, Department of Medical Genetics, Izmir, Turkey
| | - Huseyin Ekici
- Ege University, School of Medicine, Department of Obstetrics and Gynecology, Izmir, Turkey
| | - Metehan Imamoglu
- Ege University, School of Medicine, Department of Obstetrics and Gynecology, Izmir, Turkey
| | - Firat Okmen
- Ege University, School of Medicine, Department of Obstetrics and Gynecology, Izmir, Turkey
| | - Haluk Akin
- Ege University, School of Medicine, Department of Medical Genetics, Izmir, Turkey
| | - Ozgur Cogulu
- Ege University, School of Medicine, Department of Medical Genetics, Izmir, Turkey; Ege University, School of Medicine, Department of Pediatrics, Izmir, Turkey
| |
Collapse
|
6
|
Abstract
Tetrasomy 9p was first described in 1973 and approximately 68 cases with a variable phenotype have been reported to date with 22 of them being detected prenatally. The objective of this study was to review prenatally-reported cases of tetrasomy 9p thus far and to identify ultrasound phenotypes that may be suggestive of this specific syndrome. A PubMed database search was done in February 2018 without any restriction of publication date orjournals, with the use of the following keywords: tetrasomy 9p, tetrasomy 9p prenatal, mosaic tetrasomy 9p, mosaic tetrasomy 9p prenatal, isochromosome 9p, duplication 9p prenatal, trisomy 9p prenatal. Reported cases were included if the clinical presentation and diagnostic approach of each case was clearly described. The most common characteristics of prenatally-detected tetrasomy 9p are intrauterine growth retardation (IUGR, 57.0%), central nervous system (CNS) abnormalities (59.0%), skeletal anomalies (29.0%), genitourinary and renal anomalies (29.0%) and cardiac defects (29.0%). The phenotypic spectrum of tetrasomy 9p is rather unspecific as these findings are commonly associated with other chromosome anomalies, as well as microdeletion/microduplication or monogenic syndromes. The combination of early fetal morphology and diagnostic genetic testing enables a definite tetrasomy 9p diagnosis and effective further pregnancy management.
Collapse
|
7
|
Prenatal diagnosis of mosaic tetrasomy 9p in a fetus with isolated persistent left superior vena cava. Taiwan J Obstet Gynecol 2016; 54:204-5. [PMID: 25951732 DOI: 10.1016/j.tjog.2014.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2014] [Indexed: 11/20/2022] Open
|
8
|
Jafari-Ghahfarokhi H, Moradi-Chaleshtori M, Liehr T, Hashemzadeh-Chaleshtori M, Teimori H, Ghasemi-Dehkordi P. Small supernumerary marker chromosomes and their correlation with specific syndromes. Adv Biomed Res 2015; 4:140. [PMID: 26322288 PMCID: PMC4544121 DOI: 10.4103/2277-9175.161542] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 11/24/2014] [Indexed: 11/20/2022] Open
Abstract
A small supernumerary marker chromosome (sSMC) is a structurally abnormal chromosome. It is an additional chromosome smaller than one chromosome most often lacking a distinct banding pattern and is rarely identifiable by conventional banding cytogenetic analysis. The origin and composition of an sSMC is recognizable by molecular cytogenetic analysis. These sSMCs are seen in different shapes, including the ring, centric minute, and inverted duplication shapes. The effects of sSMCs on the phenotype depend on factors such as size, genetic content, and the level of the mosaicism. The presence of an sSMC causes partial tris- or tetrasomy, and 70% of the sSMC carriers are clinically normal, while 30% are abnormal in some way. In 70% of the cases the sSMC is de novo, in 20% it is inherited from the mother, and in 10% it is inherited from the father. An sSMC can be causative for specific syndromes such as Emanuel, Pallister-Killian, or cat eye syndromes. There may be more specific sSMC-related syndromes, which may be identified by further investigation. These 10 syndromes can be useful for genetic counseling after further study.
Collapse
Affiliation(s)
- Hamideh Jafari-Ghahfarokhi
- Cellular and Molecular Research Center, Medical Faculty, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Maryam Moradi-Chaleshtori
- Cellular and Molecular Research Center, Medical Faculty, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Thomas Liehr
- Institute of Human Genetics and Anthropology, Jena University Hospital, Jena, Thuringia, Germany
| | | | - Hossein Teimori
- Cellular and Molecular Research Center, Medical Faculty, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Payam Ghasemi-Dehkordi
- Cellular and Molecular Research Center, Medical Faculty, Shahrekord University of Medical Sciences, Shahrekord, Iran
| |
Collapse
|
9
|
Lazebnik N, Cohen L. Prenatal diagnosis and findings of tetrasomy 9p. J Obstet Gynaecol Res 2015; 41:997-1002. [PMID: 25944096 DOI: 10.1111/jog.12706] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 01/20/2015] [Accepted: 02/02/2015] [Indexed: 11/28/2022]
Abstract
Tetrasomy 9p is a rare condition initially reported by Ghymers et al. Reported cases are a mix of prenatal and neonatal/pediatric cases in non-mosaic and mosaic cases. We report on the common mechanism leading to this form of chromosome abnormality, the various types of tetrasomy 9p as well as the prenatal sonographic and laboratory presentation of our case and previously reported cases with mosaic and non-mosaic tetrasomy 9p. From these reported cases, a recognizable syndrome is emerging. Multiple fetal abnormalities amenable to ultrasound diagnosis are likely to be present. However, neither ultrasound study alone nor the first-trimester screen for the common aneuploidies can suggest the correct diagnosis. Chromosome study of more than a single tissue is necessary in order to establish the correct diagnosis and to differentiate between mosaic and non-mosaic tetrasomy 9p cases.
Collapse
Affiliation(s)
- Noam Lazebnik
- Departments of Reproductive Biology and Genetics.,University Hospitals, Case Medical Center, Case Western Reserve School of Medicine, Cleveland, Ohio, USA
| | - Leslie Cohen
- University Hospitals, Case Medical Center, Case Western Reserve School of Medicine, Cleveland, Ohio, USA
| |
Collapse
|
10
|
El Khattabi L, Jaillard S, Andrieux J, Pasquier L, Perrin L, Capri Y, Benmansour A, Toutain A, Marcorelles P, Vincent-Delorme C, Journel H, Henry C, De Barace C, Devisme L, Dubourg C, Demurger F, Lucas J, Belaud-Rotureau MA, Amiel J, Malan V, De Blois MC, De Pontual L, Lebbar A, Le Dû N, Germain DP, Pinard JM, Pipiras E, Tabet AC, Aboura A, Verloes A. Clinical and molecular delineation of Tetrasomy 9p syndrome: report of 12 new cases and literature review. Am J Med Genet A 2015; 167:1252-61. [PMID: 25847481 DOI: 10.1002/ajmg.a.36932] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 12/03/2014] [Indexed: 11/12/2022]
Abstract
Tetrasomy 9p is a generic term describing the presence of a supernumerary chromosome incorporating two copies of the 9p arm. Two varieties exist: isodicentric chromosome 9p (i(9p)), where the two 9p arms are linked by a single centromeric region, and pseudodicentric 9p (idic(9p)), where one active and one inactive centromere are linked together by a proximal segment of 9q that may incorporate euchromatic material. In living patients, i(9p) and idic(9p) are usually present in a mosaic state. Fifty-four cases, including fetuses, have been reported, of which only two have been molecularly characterized using array-CGH. Tetrasomy 9p leads to a variable phenotype ranging from multiple congenital anomalies with severe intellectual disability and growth delay to subnormal cognitive and physical developments. Hypertelorism, abnormal ears, microretrognathia and bulbous nose are the most common dysmorphic traits. Microcephaly, growth retardation, joint dislocation, scoliosis, cardiac and renal anomalies were reported in several cases. Those physical anomalies are often, but not universally, accompanied by intellectual disability. The most recurrent breakpoints, defined by conventional cytogenetics, are 9p10, 9q12 and 9q13. We report on 12 new patients with tetrasomy 9p (3 i(9p), 8 idic(9p) and one structurally uncharacterized), including the first case of parental germline mosaicism. All rearrangements have been characterized by DNA microarray. Based on our results and a review of the literature, we further delineate the prenatal and postnatal clinical spectrum of this imbalance. Our results show poor genotype-phenotype correlations and underline the need of precise molecular characterization of the supernumerary marker.
Collapse
Affiliation(s)
- Laïla El Khattabi
- Cochin Institute, INSERM U1016, Paris, France.,Cytogenetics Department, APHP, Cochin Hospital, Paris Descartes University, Paris, France
| | - Sylvie Jaillard
- Cytogenetics and Cell Biology Department, Rennes University Hospital, Rennes, France
| | - Joris Andrieux
- Medical Genetics Department, Lille Hospital, Lille, France
| | - Laurent Pasquier
- Medical Genetics Department, Rennes University Hospital, Rennes, France
| | - Laurence Perrin
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France
| | - Yline Capri
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France
| | | | - Annick Toutain
- Department of Genetics, Tours University Hospital, Tours, France
| | | | | | | | - Catherine Henry
- Cytogenetics and Cell Biology Department, Rennes University Hospital, Rennes, France
| | - Claire De Barace
- Department of Pediatrics, Saint-Brieuc Hospital, Saint-Brieuc, France
| | - Louise Devisme
- Department of Anatomy and Cell Pathology, CHRU Lille, France
| | - Christèle Dubourg
- Molecular Genetics Department, Rennes University Hospital, Rennes, France.,UMR 6290, IGDR, Medical School, Rennes, France
| | - Florence Demurger
- Medical Genetics Department, Rennes University Hospital, Rennes, France
| | - Josette Lucas
- Cytogenetics and Cell Biology Department, Rennes University Hospital, Rennes, France
| | - Marc-Antoine Belaud-Rotureau
- Cytogenetics and Cell Biology Department, Rennes University Hospital, Rennes, France.,UMR 6290, IGDR, Medical School, Rennes, France
| | - Jeanne Amiel
- Department of Genetics, APHP, Necker-Enfants Malades University Hospital, Paris, France
| | - Valérie Malan
- Laboratory of Cytogenetics, APHP, Necker-Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Marie-Christine De Blois
- Laboratory of Cytogenetics, APHP, Necker-Enfants Malades Hospital, Paris Descartes University, Paris, France
| | - Loïc De Pontual
- Department of Pediatrics, Jean-Verdier Hospital, APHP, Paris 13 University, Bondy, France
| | - Aziza Lebbar
- Cytogenetics Department, APHP, Cochin Hospital, Paris Descartes University, Paris, France
| | - Nathalie Le Dû
- Cytogenetics Department, APHP, Cochin Hospital, Paris Descartes University, Paris, France
| | - Dominique P Germain
- Department of Genetics, Raymond Poincaré University Hospital, Garches, France
| | - Jean-Marc Pinard
- Department of Neuropediatrics, Raymond Poincaré University Hospital, Garches, France
| | - Eva Pipiras
- Cytogenetics, APHP, Jean-Verdier University Hospital, Bondy; Paris 13, Sorbonne Paris Cité, UFR SMBH, Bobigny, France; Inserm, U676, Paris, France
| | - Anne-Claude Tabet
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France
| | - Azzedine Aboura
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France
| | - Alain Verloes
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France.,INSERM U676, and Paris VII-Denis Diderot Medical School, Paris, France
| |
Collapse
|
11
|
Chen CP, Wang LK, Chern SR, Wu PS, Chen YT, Kuo YL, Chen WL, Lee MS, Wang W. Mosaic tetrasomy 9p at amniocentesis: prenatal diagnosis, molecular cytogenetic characterization, and literature review. Taiwan J Obstet Gynecol 2015; 53:79-85. [PMID: 24767652 DOI: 10.1016/j.tjog.2013.12.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2013] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE This study was aimed at prenatal diagnosis of mosaic tetrasomy 9p and reviewing the literature. MATERIALS AND METHODS A 37-year-old woman underwent amniocentesis at 20 weeks' gestation because of advanced maternal age and fetal ascites. Cytogenetic analysis of cultured amniocytes revealed 21.4% (6/28 colonies) mosaicism for a supernumerary i(9p). Repeat amniocentesis was performed at 23 weeks' gestation. Array comparative genomic hybridization, interphase fluorescence in situ hybridization, and quantitative fluorescent polymerase chain reaction were applied to uncultured amniocytes, and conventional cytogenetic analysis was applied to cultured amniocytes. RESULTS Array comparative genomic hybridization analysis of uncultured amniocytes detected a genomic gain at 9p24.3-9q21.11. Interphase fluorescence in situ hybridization analysis of uncultured amniocytes using a 9p24.3-specific probe RP11-31F19 (spectrum red) showed four red signals in 47.1% (49/104 cells) in uncultured amniocytes. Cytogenetic analysis of cultured amniocytes revealed a karyotype of 47,XX, +idic(9)(pter→q21.11::q21.11→pter)[4]/46,XX[20] and 16.7% (4/24 colonies) mosaicism for tetrasomy 9p. Quantitative fluorescent polymerase chain reaction confirmed a maternal origin of tetrasomy 9p. The pregnancy was terminated, and a malformed fetus was delivered with hydrops fetalis and facial dysmorphism. The fetal blood cells had 32.5% (13/40 cells) mosaicism for tetrasomy 9p. CONCLUSION Mosaic tetrasomy 9p at amniocentesis can be associated with fetal ascites and hydrops fetalis. The mosaic level of tetrasomy 9p may decrease after long-term tissue culture in amniocytes in case of mosaic tetrasomy 9p.
Collapse
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.
| | - 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
| | | | - Yu-Ting Chen
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
| | - Yu-Ling Kuo
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Wen-Lin Chen
- 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; Department of Bioengineering, Tatung University, Taipei, Taiwan
| |
Collapse
|
12
|
Nakamura-Pereira M, Cima LCD, Llerena JC, Guerra FAR, Peixoto-Filho FM. Sonographic findings in a case of tetrasomy 9p associated with increased nuchal translucency and Dandy-Walker malformation. JOURNAL OF CLINICAL ULTRASOUND : JCU 2009; 37:471-474. [PMID: 19655321 DOI: 10.1002/jcu.20612] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We report a case of a 23-year-old pregnant woman, who underwent amniocentesis after ultrasound (US) examination in the first trimester which revealed a nuchal translucency thickness of 2.9 mm. Cytogenetic analysis revealed complete tetrasomy of the short arm of chromosome 9. Further US evaluation in the second trimester revealed Dandy-Walker malformation, ventriculomegaly, bilateral clubfoot, lip and palate clefts, arthrogryposis and hyperechoic kidneys with bilateral pelvic dilatation. At 30 weeks of gestation, a placental abruption was noted and a Cesarean section was performed. The infant died shortly after birth. A review of previous cases of tetrasomy 9p shows that the remarkable sonographic findings are ventriculomegaly, intrauterine growth restriction, genitourinary anomaly, Dandy-Walker malformation, cleft lip/palate and limb malformation, but the association of tetrasomy 9p and increased nuchal translucency had not been reported.
Collapse
Affiliation(s)
- Marcos Nakamura-Pereira
- Fetal Medicine Unit, Department of Obstetrics, Fernandes Figueira Institute, Oswaldo Cruz Foundation (IFF-FIOCRUZ), Flamengo Rio de Janeiro, RJ, Brazil
| | | | | | | | | |
Collapse
|
13
|
Coman D, Bacic S, Boys A, Sparrow DB, Dunwoodie SL, Savarirayan R, Amor DJ. Spondylocostal dysostosis in a pregnancy complicated by confined placental mosaicism for tetrasomy 9p. Am J Med Genet A 2008; 146A:1972-6. [DOI: 10.1002/ajmg.a.32299] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
14
|
Chen CP, Chang TY, Chern SR, Lee CC, Town DD, Lee MS, Wang W. Prenatal diagnosis of low-level mosaic tetrasomy 9p by amniocentesis. Prenat Diagn 2007; 27:383-5. [PMID: 17393556 DOI: 10.1002/pd.1678] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
15
|
Current awareness in prenatal diagnosis. Prenat Diagn 2005; 25:93-8. [PMID: 15706703 DOI: 10.1002/pd.1015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|