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Navarrete-Meneses MP, Ochoa-Mellado I, Gutiérrez-Álvarez R, Martínez-Anaya D, Juárez-Figueroa U, Durán-McKinster C, Lieberman-Hernández E, Yokoyama-Rebollar E, Gómez-Carmona S, Del Castillo-Ruiz V, Pérez-Vera P, Salas-Labadía C. Cytogenomic characterization of small supernumerary marker chromosomes in patients with pigmentary mosaicism. Front Genet 2024; 15:1356786. [PMID: 38711916 PMCID: PMC11071077 DOI: 10.3389/fgene.2024.1356786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 03/21/2024] [Indexed: 05/08/2024] Open
Abstract
Introduction The combination of gene content on the marker chromosome, chromosomal origin, level of mosaicism, origin mechanism (chromothripsis), and uniparental disomy can influence the final characterization of sSMCs. Several chromosomal aberrations, including sSMCs, have been observed in 30%-60% of patients with pigmentary mosaicism, and in more than 80%, chromosomal abnormalities are present in the mosaic state. In patients with pigmentary mosaicism the most representative chromosomes involved in sSMCs are 3, 5, 6, 9, 10, 13, 15, 18, 20, and X. In this study, we included the complete clinical, cytogenetic, and molecular characterization of seven patients with pigmentary mosaicism associated with the presence of SMCs of different chromosomal origins. Methods The patients were diagnosed by the Genetics and Dermatology Department of three different hospitals. Cytogenetic and FISH analyses were performed on peripheral blood, light skin, and dark skin. FISH analysis was performed using different probes, depending on the marker chromosome description. Different array analysis was performed. Results To date, of the seven cases studied, the chromosomal origins of six were successfully identified by FISH or array analysis. The chromosomes involved in SMCs were 6, 9, 15, and 18, X. The most frequently found was the centric minute structure. Discussion To date, this group of seven patients constitutes the largest clinical and cytogenetically finely described study of cases with pigmentary mosaicism associated with sSMCs. Undoubtedly, analysis of the two skin types is a fundamental part of our study, as numerical differences may occur in the cell lines found in each skin type. The knowledge generated in this study will help delineate a very heterogeneous entity more accurately, and in the future, analyzing more patients with PM will likely establish a more definite association with the presence of this genetic alteration.
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Affiliation(s)
- M. P. Navarrete-Meneses
- Genetic and cancer Laboratory, National Institute of Pediatrics (Mexico), Mexico City, Mexico
| | - I. Ochoa-Mellado
- Genética Humana, Instituto Nacional de Pediatría, Mexico City, Mexico
| | - R. Gutiérrez-Álvarez
- Genetic and cancer Laboratory, National Institute of Pediatrics (Mexico), Mexico City, Mexico
| | - D. Martínez-Anaya
- Genetic and cancer Laboratory, National Institute of Pediatrics (Mexico), Mexico City, Mexico
| | - U. Juárez-Figueroa
- Laboratorio de Citogenética, Instituto Nacional de Pediatría, Mexico City, Mexico
| | - C. Durán-McKinster
- Departamento de Dermatología, Instituto Nacional de Pediatría, Mexico City, Mexico
| | | | | | - S. Gómez-Carmona
- Departamento de Genética Médica, Centro de Rehabilitación e Inclusión Infantil Teletón, Cancún, México
| | | | - P. Pérez-Vera
- Genetic and cancer Laboratory, National Institute of Pediatrics (Mexico), Mexico City, Mexico
| | - C. Salas-Labadía
- Genetic and cancer Laboratory, National Institute of Pediatrics (Mexico), Mexico City, Mexico
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Zhang S, Zhou Y, Xiao G, Qiu X. Application of various genetic analysis techniques for detecting two rare cases of 9p duplication mosaicism during prenatal diagnosis. Mol Genet Genomic Med 2023; 11:e2229. [PMID: 37337789 PMCID: PMC10568385 DOI: 10.1002/mgg3.2229] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 04/25/2023] [Accepted: 06/03/2023] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND The identification of genetic mosaicism and the genetic counseling needed following its discovery have been challenging problems in the field of prenatal diagnosis. Herein, we describe the clinical phenotypes and various prenatal diagnostic processes used for two rare cases of 9p duplication mosaicism and review the prior literature in the field to evaluate the merits of different methods for diagnosing mosaic 9p duplication. METHODS We recorded ultrasound examinations, reported the screening and diagnosis pathways, and analyzed the mosaic levels of the two cases of 9p duplication using karyotype analysis, chromosomal microarray analysis (CMA), and fluorescence in situ hybridization analysis (FISH). RESULTS Case 1 had a normal clinical phenotype for tetrasomy 9p mosaicism, and Case 2 showed multiple malformations caused by both trisomy 9 and trisomy 9p mosaicism. Both cases were initially suspected after non-invasive prenatal screening (NIPT) based on cell-free DNA. The mosaic ratio of 9p duplication found via karyotyping was lower than what was discovered by CMA and FISH, in both cases. Contrary to previous findings, the mosaic level of trisomy 9 found by karyotype analysis was greater than what was found by CMA, in terms of complex mosaicism involving trisomy 9 and trisomy 9p, in Case 2. CONCLUSION NIPT can indicate 9p duplication mosaicism during prenatal screening. Different strengths and limitations existed in terms of diagnosing mosaic 9p duplication by karyotype analysis, CMA, and FISH. The combined use of various methods may be capable of more accurately determining break-points and mosaic levels of 9p duplication during prenatal diagnosis.
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Affiliation(s)
- Sufen Zhang
- Department of Clinical Laboratory (Institute of Medical Genetics)Zhuhai Center for Maternal and Child Health CareZhuhaiGuangdongChina
| | - Yuqiu Zhou
- Department of Clinical Laboratory (Institute of Medical Genetics)Zhuhai Center for Maternal and Child Health CareZhuhaiGuangdongChina
| | - Gefei Xiao
- Department of Clinical Laboratory (Institute of Medical Genetics)Zhuhai Center for Maternal and Child Health CareZhuhaiGuangdongChina
| | - Xianrong Qiu
- Department of Clinical Laboratory (Institute of Medical Genetics)Zhuhai Center for Maternal and Child Health CareZhuhaiGuangdongChina
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3
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Nagao A, Morine M, Sugimoto T, Tachibana A, Hinokio K, Maeda K. Non-mosaic 9p tetrasomy with congenital diaphragmatic hernia. Pediatr Int 2023; 65:e15671. [PMID: 38009982 DOI: 10.1111/ped.15671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/31/2023] [Accepted: 09/06/2023] [Indexed: 11/29/2023]
Affiliation(s)
- Aki Nagao
- NHO Shikoku Medical Center for Children and Adults, Zentsuji City, Japan
| | - Mikio Morine
- NHO Shikoku Medical Center for Children and Adults, Zentsuji City, Japan
| | - Tatsuro Sugimoto
- NHO Shikoku Medical Center for Children and Adults, Zentsuji City, Japan
| | - Ayaka Tachibana
- NHO Shikoku Medical Center for Children and Adults, Zentsuji City, Japan
| | - Kenji Hinokio
- NHO Shikoku Medical Center for Children and Adults, Zentsuji City, Japan
| | - Kazuhisa Maeda
- NHO Shikoku Medical Center for Children and Adults, Zentsuji City, Japan
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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.
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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,
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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.
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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
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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.
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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.
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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
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No Evidence of Abnormal Expression of Beta-Catenin and Bcl-2 Proteins in Pilomatricoma as One Clinical Feature of Tetrasomy 9p Syndrome. Int J Pediatr 2021; 2021:2612846. [PMID: 34956371 PMCID: PMC8694977 DOI: 10.1155/2021/2612846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/19/2021] [Accepted: 11/20/2021] [Indexed: 11/18/2022] Open
Abstract
Background Little is currently known about the genetics of pilomatricoma. A number of studies have reported some evidence that this disease may have a genetic association with mutations of CTNNB1 gene or expression of the beta-catenin protein. In this study, we reviewed literatures involving 30 patients with various genetic syndromes that have been linked to pilomatricoma and found that somatic mutations of the CTNNB1 gene were reported in 67% of patients. Pilomatricoma has been reported in patients with chromosome 9 rearrangements, including 4 patients with tetrasomy 9p syndrome and one patient with partial trisomy 9. In addition to beta-catenin, the expression of bcl2 was observed in pilomatricoma. Objectives To report an additional case of tetrasomy 9p syndrome with concurrent pilomatricoma and to examine whether abnormal protein expressions of the CTNNB1 and/or BCL2 genes were present. Methods Cytogenetic analysis was carried out on peripheral blood, biopsied skin, and pilomatricoma tissue obtained from a patient with tetrasomy 9p syndrome. Immunohistochemical staining was performed on the pilomatricoma tissue, using beta-catenin and bcl2 monoclonal antibodies. Results SNP microarray revealed nonmosaic gain of the short arm of chromosome 9. A nonmosaic isodicentric chromosome 9 was identified in the peripheral blood but this rearranged chromosome was detected in only 8.3% of the skin fibroblasts. Chromosomal abnormalities were not detected in the pilomatricoma nor expression of beta-catenin or bcl2 proteins in our patient. Conclusion Pilomatricoma could be a new clinical feature associated with tetrasomy 9p syndrome; however, we found no evidence of tetrasomy 9p or abnormal beta-catenin or bcl2 proteins of the CTNNB1 and BCL2 genes in our pilomatricoma patient.
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9
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Lin S, Huang S, Ou X, Gu H, Wang Y, Li P, Zhou Y. Mosaic duplication of 8q24.1q24.3 detected by chromosomal microarray but not karyotyping in two unrelated fetuses with cardiac defects. Mol Cytogenet 2021; 14:26. [PMID: 34006293 PMCID: PMC8132396 DOI: 10.1186/s13039-021-00544-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 04/05/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Discordance between traditional cytogenetic and molecular cytogenetic tests is rare but not uncommon. The explanation of discordance between two genetic methods is difficult but especially important for genetic counseling, particularly for prenatal genetic diagnosis. CASE PRESENTATION Two unrelated fetuses were diagnosed with cardiac defects by prenatal ultrasound examination, and invasive cordocentesis was performed to obtain cord blood samples for prenatal genetic diagnosis. For both fetuses, chromosomal microarray analysis (CMA) detected a novel approximately 27-Mb mosaic duplication with a high copy number of approximately six to seven copies on chromosome 8q24.1q24.3 that was not identified by karyotyping. To exclude artificial errors and validate laboratory detection results, multiple procedures including copy number variation sequencing, fluorescence in situ hybridization, and short tandem repeat and single-nucleotide polymorphism genotype comparison were performed, confirming the discordant results between CMA and karyotyping. The potential causes of discordance between CMA and karyotyping using fetal blood lymphocytes are discussed; we suggest that extrachromosomal DNA or cell-free DNA fragmentation originating from certain tumor tissues with 8q24.1q24.3 duplication might deserve further investigation. CONCLUSIONS This study may be helpful for prenatal evaluation and genetic counseling for subsequent patients with similar mosaic 8q24.1q24.3 duplications. Additionally, more cases and further research are needed to understand whether mosaic 8q24.1q24.3 duplication is associated with certain genetic disorders and to investigate the causes of discordance between molecular and morphological methods.
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Affiliation(s)
- Shaobin Lin
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhong Shan Er Road, Guangzhou, 510080, Guangdong Province, China
| | - Shufang Huang
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People' Hospital, Guangzhou, 510080, Guangdong Province, China
| | - Xueling Ou
- Faculty of Forensic Medicine, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, Guangdong Province, China
| | - Heng Gu
- NHC Key Laboratory of Male Reproduction and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou, 510080, Guangdong Province, China
| | - Yonghua Wang
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People' Hospital, Guangzhou, 510080, Guangdong Province, China
| | - Ping Li
- Prenatal Diagnosis Center, Department of Obstetrics and Gynecology, Guangdong Provincial People' Hospital, Guangzhou, 510080, Guangdong Province, China.
| | - Yi Zhou
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhong Shan Er Road, Guangzhou, 510080, Guangdong Province, China.
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First Case Report of Maternal Mosaic Tetrasomy 9p Incidentally Detected on Non-Invasive Prenatal Testing. Genes (Basel) 2021; 12:genes12030370. [PMID: 33807602 PMCID: PMC7998520 DOI: 10.3390/genes12030370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 02/23/2021] [Accepted: 03/01/2021] [Indexed: 01/09/2023] Open
Abstract
Tetrasomy 9p (ORPHA:3390) is a rare syndrome, hallmarked by growth retardation; psychomotor delay; mild to moderate intellectual disability; and a spectrum of skeletal, cardiac, renal and urogenital defects. Here we present a Chinese female with good past health who conceived her pregnancy naturally. Non-invasive prenatal testing (NIPT) showed multiple chromosomal aberrations were consistently detected in two sampling times, which included elevation in DNA from chromosome 9p. Amniocentesis was performed and sent for chromosomal microarray, which was normal. Maternal karyotype revealed that mos 47,XX,+dic(9;9)(q21.1;q21.1)(24)/46,XX(9) presents mosaic tetrasomy for the short arm of chromosome 9p and is related to the NIPT results showing elevation in DNA from chromosome 9p. The pregnancy was uneventful, and the patient was delivered at term. Maternal samples were obtained at two different time points after delivery showed the same multiple chromosomal aberrations detected during pregnancy. This is a first report on an unusual case of mosaic isodicentric tetrasomy 9p in a healthy adult with normal intellect. With widespread adoption of NIPT for screening fetal aneuploidy and genome-wide copy number changes, a rise in incidental detection of maternal rare genetic syndrome will bring challenges in our current approach to genetic counselling and prenatal diagnosis.
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Bellil H, Herve B, Herzog E, Ayoubi JM, Vialard F, Poulain M. A high level of tetrasomy 9p mosaicism but no clinical manifestations other than moderate oligozoospermia with chromosomally balanced sperm: a case report. J Assist Reprod Genet 2020; 37:573-577. [PMID: 31981038 DOI: 10.1007/s10815-020-01690-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 01/04/2020] [Indexed: 11/29/2022] Open
Abstract
Tetrasomy 9p (ORPHA: 3310) (i(9p)) is a rare chromosomal imbalance. It is characterized by the presence of a supernumerary chromosome incorporating two copies of the short arm of chromosome 9 and is usually present in a mosaic state postnatally. Depending on the level of mosaicism, the phenotype ranges from mild developmental delay to multiple congenital anomalies with severe intellectual disability. Here, we report on a patient diagnosed with i(9p) mosaicism after the recurrent failure of in vitro fertilization. Although the patient's clinical phenotype was normal, the level of mosaicism varied greatly from one tissue to another. A sperm analysis evidenced subnormal spermatogenesis with chromosomally balanced spermatozoa and no risk of transmission to the offspring. Although individuals with i(9p) and no clinical manifestations have rarely been described, the prenatal diagnosis of this abnormality in the absence of ultrasound findings raises a number of questions.
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Affiliation(s)
- Hela Bellil
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France.,Genetics Federation, CHI de Poissy St Germain en Laye, F-78303, Poissy, France
| | - Bérenice Herve
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France.,Genetics Federation, CHI de Poissy St Germain en Laye, F-78303, Poissy, France
| | - Elodie Herzog
- Department of Gyneacology, Obstetrics and Reproductive Medicine, Hopital Foch, F-92150, Suresnes, France
| | - Jean-Marc Ayoubi
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France.,Department of Gyneacology, Obstetrics and Reproductive Medicine, Hopital Foch, F-92150, Suresnes, France
| | - François Vialard
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France. .,Genetics Federation, CHI de Poissy St Germain en Laye, F-78303, Poissy, France.
| | - Marine Poulain
- Université Paris-Saclay, INRAE, ENVA, UVSQ, BREED, 78350, Jouy-en-Josas, France.,Department of Gyneacology, Obstetrics and Reproductive Medicine, Hopital Foch, F-92150, Suresnes, France
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12
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Sifuentes-Dominguez L, Starokadomskyy P, Welch J, Gurram B, Park JY, Koduru P, Burstein E. Mosaic Tetrasomy 9p Associated With Inflammatory Bowel Disease. J Crohns Colitis 2019; 13:1474-1478. [PMID: 31104071 PMCID: PMC6821155 DOI: 10.1093/ecco-jcc/jjz079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The genetic basis of inflammatory bowel disease remains to be elucidated completely. Here we report on a patient with inflammatory bowel disease who has mosaic tetrasomy of the short arm of chromosome 9, a genomic region that harbours the type I interferon gene cluster. We show that increased interferon activation is present in peripheral blood and intestinal tissue from this patient, similar to previous reports of autoinflammatory organ damage driven by interferon activation in other patients with this chromosomal abnormality. To our knowledge, this is the first case of tetrasomy 9p-associated interferonopathy driving intestinal inflammation and highlights the role that type-I interferon pathways can play in the pathogenesis of intestinal inflammation.
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Affiliation(s)
- Luis Sifuentes-Dominguez
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, USA,Corresponding author: Luis Sifuentes-Dominguez and Ezra Burstein, Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Room J5.126, Dallas, TX 75390-9151, USA. Tel: 1-214-648-2008; Fax: 1-214-648-2022; ;
| | - Petro Starokadomskyy
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jacob Welch
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Bhaskar Gurram
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Jason Y Park
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA,Eugene McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Prasad Koduru
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Ezra Burstein
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA,Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas, USA,Corresponding author: Luis Sifuentes-Dominguez and Ezra Burstein, Department of Pediatrics, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Room J5.126, Dallas, TX 75390-9151, USA. Tel: 1-214-648-2008; Fax: 1-214-648-2022; ;
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13
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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.
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14
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Li D, Shokuhfar T, Pantalone J, Rothstein B, Alden TD, Shaibani A, Saratsis AM. Choroidal artery embolization in the management of cerebrospinal fluid overproduction: case report and review of the literature. J Neurosurg Pediatr 2019; 23:737-748. [PMID: 30901750 DOI: 10.3171/2019.1.peds18519] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Accepted: 01/08/2019] [Indexed: 11/06/2022]
Abstract
Diffuse villous hyperplasia of the choroid plexus (DVHCP) is a rare cause of communicating hydrocephalus. DVHCP may be diagnosed radiographically and through histological evaluation. It may be associated with genetic abnormalities, particularly involving chromosome 9. Due to CSF overproduction, patients with DVHCP often fail management with shunting alone and may require adjuvant interventions. The authors present the case of a child with partial trisomy 9p and delayed diagnosis of hydrocephalus with radiographic evidence of DVHCP who was successfully managed with ventriculoperitoneal shunt (VPS) placement, adjuvant bilateral endoscopic choroid plexus coagulation (CPC), and the novel application of anterior choroidal artery embolization. In addition, a systematic MEDLINE search was conducted using the keywords "diffuse villous hyperplasia," "choroid plexus hypertrophy," and "idiopathic cerebrospinal fluid overproduction." Clinicopathological characteristics and outcomes of the present case were reviewed and compared to those in the literature.A 14-month-old girl with partial trisomy 9p presented with macrocephaly and radiographic evidence of communicating hydrocephalus and DVHCP. Ventriculoperitoneal shunting resulted in distal failure due to inadequate CSF absorption, and ventriculoatrial shunt (VAS) placement was not possible due to multiple cardiac anomalies. Daily CSF production was reduced via endoscopic third ventriculostomy and bilateral CPC, followed by distal choroidal artery embolization, enabling VPS re-internalization. The embolization was complicated by radiographic evidence of an iatrogenic cerebral infarct, but this was clinically occult. Thirty-two additional cases of communicating hydrocephalus due to DVHCP are reported in the literature: 27 pediatric, 3 adult, and 2 postmortem. Genetic abnormalities were noted in 14, with 7 (50%) involving chromosome 9. Twelve patients underwent plexectomy (9 bilateral, 2 unilateral, 1 partial), and 10 underwent CPC (4 bilateral, 3 unilateral, and 3 unspecified), with or without shunting. Eight patients were successfully managed with shunting alone (6 VASs, 2 VPSs), and none underwent arterial embolization.DVHCP is a rare cause of communicating hydrocephalus that may be associated with genetic abnormalities. A thorough review of the literature highlights diagnostic criteria and interventional options involved in managing this cause of CSF overproduction. The present case demonstrates that angiographic confirmation of prominent choroidal arteries may contribute to the diagnosis DVHCP. In addition, embolization of the distal choroidal arteries may be considered as a potential adjuvant treatment in patients for whom conventional treatments have failed or are not feasible.
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Affiliation(s)
- Daphne Li
- 1Department of Neurological Surgery, Loyola University Medical Center, Maywood, Illinois
| | - Tahaamin Shokuhfar
- 2Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Julia Pantalone
- 3University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Brian Rothstein
- 4Department of Surgery, Division of Pediatric Neurosurgery, Ann & Robert H. Lurie Children's Hospital, Chicago, Illinois; and
| | - Tord D Alden
- 4Department of Surgery, Division of Pediatric Neurosurgery, Ann & Robert H. Lurie Children's Hospital, Chicago, Illinois; and
- 5Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Ali Shaibani
- 2Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
- 5Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Amanda M Saratsis
- 4Department of Surgery, Division of Pediatric Neurosurgery, Ann & Robert H. Lurie Children's Hospital, Chicago, Illinois; and
- 5Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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15
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Pescarmona R, Belot A, Villard M, Besson L, Lopez J, Mosnier I, Mathieu AL, Lombard C, Garnier L, Frachette C, Walzer T, Viel S. Comparison of RT-qPCR and Nanostring in the measurement of blood interferon response for the diagnosis of type I interferonopathies. Cytokine 2018; 113:446-452. [PMID: 30413290 DOI: 10.1016/j.cyto.2018.10.023] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 10/03/2018] [Accepted: 10/29/2018] [Indexed: 12/25/2022]
Abstract
Type I interferonopathies are characterized by an increase of circulating type I interferon (IFN) concentration. Type I interferonopathies refer to rare Mendelian genetic disorders such as Aicardi-Goutières Syndrome (AGS) as well as more frequent and polygenic auto-immune diseases like systemic lupus erythematosus (SLE). Yet, detection of type I IFN in these patients remains challenging as its amount is usually very low in patients' sera. Thus, the detection of interferon-stimulating genes has been proposed as an alternative for the detection of this cytokine but sensitivy, specificity and predictive values of the assay have not been reported so far. In this study, we propose two different methods based on Nanostring or RT-qPCR to measure in the clinical routine the IFN response, defined as a set of transcripts that are systemically induced by IFNs. The IFN signature is composed of 6 IFN stimulated genes (ISGs) and has a strong predictive value for the diagnosis of type I interferonopathies. The use of this simple test might represent a gold standard for the evaluation of various autoimmune diseases. Moreover, this test could also be used to monitor patients treated with drugs targeting type I IFN pathway. When comparing both methods - Nanostring and qPCR - in terms of analytical performance, they provided similar results but Nanostring was quicker, easier to multiplex, and almost fully-automated, which represent a more reliable assay for the daily clinical practice.
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Affiliation(s)
- Rémi Pescarmona
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France; Service d'Immunologie biologique, Hospices Civils de Lyon and Université Claude-Bernard Lyon 1, Lyon, France.
| | - Alexandre Belot
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France; Service de néphrologie rhumatologie dermatologie pédiatriques, Hospices Civils de Lyon, Université Claude-Bernard Lyon 1, Lyon, France; Centre de référence des rhumatismes inflammatoires et maladies auto-immunes systémiques rares de l'enfant RAISE, Hôpital Femme Mère Enfant, Bron, France
| | - Marine Villard
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France; Service d'Immunologie biologique, Hospices Civils de Lyon and Université Claude-Bernard Lyon 1, Lyon, France
| | - Laurie Besson
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France
| | - Jonathan Lopez
- Université Lyon 1, Lyon, France; Service de Biochimie et Biologie moléculaire, Hospices Civils de Lyon, Université Claude-Bernard Lyon 1, Lyon, France; CRCL, Centre de Recherche en Cancérologie de Lyon, Lyon, France; Inserm, U1052 Lyon, France; CNRS, U5286 Lyon, France
| | - Isabelle Mosnier
- Service de Biochimie et Biologie moléculaire, Hospices Civils de Lyon, Université Claude-Bernard Lyon 1, Lyon, France
| | - Anne-Laure Mathieu
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France; Centre de référence des rhumatismes inflammatoires et maladies auto-immunes systémiques rares de l'enfant RAISE, Hôpital Femme Mère Enfant, Bron, France
| | - Christine Lombard
- Service d'Immunologie biologique, Hospices Civils de Lyon and Université Claude-Bernard Lyon 1, Lyon, France
| | - Lorna Garnier
- Service d'Immunologie biologique, Hospices Civils de Lyon and Université Claude-Bernard Lyon 1, Lyon, France
| | - Cécile Frachette
- Service de néphrologie rhumatologie dermatologie pédiatriques, Hospices Civils de Lyon, Université Claude-Bernard Lyon 1, Lyon, France
| | - Thierry Walzer
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France; Centre de référence des rhumatismes inflammatoires et maladies auto-immunes systémiques rares de l'enfant RAISE, Hôpital Femme Mère Enfant, Bron, France
| | - Sébastien Viel
- CIRI, Centre International de Recherche en Infectiologie - International Center for Infectiology Research, Lyon, France; Inserm, U1111 Lyon, France; Ecole Normale Supérieure de Lyon, Lyon, France; Université Lyon 1, Lyon, France; CNRS, UMR5308, Lyon, France; Service d'Immunologie biologique, Hospices Civils de Lyon and Université Claude-Bernard Lyon 1, Lyon, France; Centre de référence des rhumatismes inflammatoires et maladies auto-immunes systémiques rares de l'enfant RAISE, Hôpital Femme Mère Enfant, Bron, France
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16
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Case presentation: persistent adenovirus B3 infections associated with bronchiolitis obliterans treated with cidofovir in a child with mosaic tetrasomy 9p. BMC Infect Dis 2018; 18:529. [PMID: 30348093 PMCID: PMC6198380 DOI: 10.1186/s12879-018-3441-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/16/2018] [Indexed: 12/22/2022] Open
Abstract
Background Adenoviruses (AdV) are non-enveloped, double-stranded DNA viruses with multiple serotypes, which cause a variety of end-organ disease in both immunocompetent and immunocompromised individuals. Some adenoviruses can become latent in the mucosa-associated lymphoid tissue (e.g. adenoids and tonsils), with the potential to reactivate sporadically, leading to upper or lower respiratory tract infection and disease. Bronchiolitis Obliterans (BO) is a rare chronic lung disorder which usually follows a severe insult to the respiratory tract. In children, it is a complication of severe infections (as post-infectious BO), typically manifesting after a severe respiratory infection, in previously healthy pre-school children. Symptoms and signs of air trapping (hyperinflated chest, expiratory wheeze) with persistent oxygen requirement are characteristic. The presence of the unusual mosaic tetrasomy 9p genotype in this case, despite standard cidofovir therapy for persistent or chronic adenovirus infection, may have impacted on the child’s long-term clinical outcomes. Case presentation We present a case of persistent AdV B3 infection in a 14-month old boy with mosaic tetrasomy 9p, which persisted for 10 weeks, resulting in radiologically-confirmed BO, requiring cidofovir to control the persistent AdV B3 infection and standard therapy with pulsed steroids. We argue that in the presence of the mosaic tetrasomy 9p, earlier antiviral therapy may have decreased the severity of BO, as this mutation is known to be associated with some degree of immune dysregulation. Conclusions Adenovirus infections are common in children and may persist as latent infections, with subsequent reactivations during loss of immune control, related to systemic illness arising from other causes. In chronic, reactivated AdV infection with pneumonia, BO is a recognised complication. However, in this case, with the presence of the mosaic tetrasomy 9p mutation, earlier antiviral therapy may have reduced such longer term complications, due to the immune dysregulatory nature of this mutation.
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17
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Furey C, Antwi P, Duran D, Timberlake AT, Nelson-Williams C, Matouk CC, DiLuna ML, Günel M, Kahle KT. 9p24 triplication in syndromic hydrocephalus with diffuse villous hyperplasia of the choroid plexus. Cold Spring Harb Mol Case Stud 2018; 4:a003145. [PMID: 29895553 PMCID: PMC6169828 DOI: 10.1101/mcs.a003145] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 06/06/2018] [Indexed: 12/19/2022] Open
Abstract
Hydrocephalus, a disorder of impaired cerebrospinal fluid (CSF) homeostasis, often results from an imbalance between CSF production and reabsorption. Rarely, hydrocephalus is the consequence of CSF hypersecretion in the context of diffuse villous hyperplasia of the choroid plexus (DVHCP). The limited genetic information in previously reported cases suggests a high prevalence of gains of Chromosome 9p in this disease, although the critical genes involved in DVHCP pathogenesis have not been identified. Here, we report a patient with syndromic hydrocephalus with DVHCP associated with a novel 9p24.3-11.2 triplication and 15q13.2-q13.3 microdeletion. We review the clinical, radiological, and pathological features of DVHCP, as well as its surgical management. A better understanding of the genetic basis of DVHCP could spur the development of rational, targeted nonsurgical hydrocephalus treatments.
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Affiliation(s)
- Charuta Furey
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Prince Antwi
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Daniel Duran
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Andrew T Timberlake
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Surgery, Section of Plastic and Reconstructive Surgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Carol Nelson-Williams
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Charles C Matouk
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Michael L DiLuna
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Murat Günel
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
| | - Kristopher T Kahle
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Neurosurgery, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut 06510, USA
- Department of Cellular and Molecular Physiology, Yale University School of Medicine, New Haven, Connecticut 06510, USA
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18
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Pinto IP, Minasi LB, Steckelberg R, da Silva CC, da Cruz AD. Mosaic Tetrasomy of 9p24.3q21.11 postnatally identified in an infant born with multiple congenital malformations: a case report. BMC Pediatr 2018; 18:298. [PMID: 30193577 PMCID: PMC6128999 DOI: 10.1186/s12887-018-1275-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 09/03/2018] [Indexed: 01/06/2023] Open
Abstract
Background Supernumerary Marker Chromosomes consist in structurally abnormal chromosomes, considered as an extra chromosome in which around 70% occur as a de novo event and about 30% of the cases are mosaic. Tetrasomy 9p is a rare chromosomal abnormality described as the presence of a supernumerary isochromosome 9p. Clinical features of tetrasomy 9p include a variety of physical and developmental abnormalities. Case presentation Herein, we reported a postnatal case of a newborn who died in early infancy with multiple congenital malformations due to a mosaic de novo tetrasomy 9p detected by Chromosomal Microarray Analysis. Conventional cytogenetics analysis of the proband was 47,XY,+mar[45]/46,XY[5]. The parental karyotypes presented no visible numerical or structural alterations. Microarray Analysis of the proband revealed that the marker chromosome corresponded to a mosaic de novo gain at 9p24.3q21.11. Conclusions Chromosomal Microarray Analysis was helpful to identify the origin of the supernumerary marker chromosome and it was a powerful tool to carry out genetic diagnostic, guiding the medical diagnosis. Furthermore, the CMA allowed observing at the first time in Central Brazil the tetrasomy 9p and partial tetrasomy 9q in mosaic, encompassing a large duplicated region with several morbid genes, in an infant with multiple congenital malformations.
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Affiliation(s)
- Irene Plaza Pinto
- Biotechnology and Biodiversity PhD Program, Federal University of Goias, Rede Centro Oeste de Pós-Graduação de Pesquisa e Inovação, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil. .,Replicon Research Group, Department of Biology, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.
| | - Lysa Bernardes Minasi
- Replicon Research Group, Department of Biology, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Genetics Master's Program, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil
| | - Raphael Steckelberg
- Maternity Hospital Amparo, Av T-12 n° 280 Setor Bueno, Goiânia, GO, Brazil.,Dr Henrique Santillo Rehabilitation and Readjustment Center, Av. Ver. José Monteiro, 1655, Setor Negrão de Lima, Goiânia, GO, Brazil
| | - Claudio Carlos da Silva
- Biotechnology and Biodiversity PhD Program, Federal University of Goias, Rede Centro Oeste de Pós-Graduação de Pesquisa e Inovação, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Replicon Research Group, Department of Biology, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Genetics Master's Program, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Human Cytogenetics and Molecular Genetics Laboratory, Secretary of Goias State for Public Health, Goiânia, GO, Brazil.,State University of Goias, Eseffego, Goiânia, Goiás, Brazil
| | - Aparecido Divino da Cruz
- Biotechnology and Biodiversity PhD Program, Federal University of Goias, Rede Centro Oeste de Pós-Graduação de Pesquisa e Inovação, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Replicon Research Group, Department of Biology, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Genetics Master's Program, Pontifical Catholic University of Goias, Rua 235, n. 40, Setor Leste Universitário, Goiânia, GO, 74605-050, Brazil.,Human Cytogenetics and Molecular Genetics Laboratory, Secretary of Goias State for Public Health, Goiânia, GO, Brazil
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19
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Boxill M, Becher N, Sunde L, Thelle T. Choroid plexus hyperplasia and chromosome 9p gains. Am J Med Genet A 2018; 176:1416-1422. [DOI: 10.1002/ajmg.a.38697] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 03/07/2018] [Accepted: 03/09/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Martin Boxill
- Department of Pediatrics; Viborg Regional Hospital; Viborg Denmark
| | - Naja Becher
- Department of Clinical Genetics; Aarhus University Hospital; Aarhus Denmark
| | - Lone Sunde
- Department of Clinical Genetics; Aarhus University Hospital; Aarhus Denmark
- Department of Biomedicine; Aarhus University; Aarhus Denmark
| | - Thomas Thelle
- Department of Pediatrics; Viborg Regional Hospital; Viborg Denmark
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