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Chen Q, Chen Y, Shi L, Tao Y, Li X, Zhu X, Yang Y, Xu W. Uniparental disomy: expanding the clinical and molecular phenotypes of whole chromosomes. Front Genet 2023; 14:1232059. [PMID: 37860673 PMCID: PMC10582337 DOI: 10.3389/fgene.2023.1232059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 09/22/2023] [Indexed: 10/21/2023] Open
Abstract
Uniparental disomy (UPD) refers to as both homologous chromosomes inherited from only one parent without identical copies from the other parent. Studies on clinical phenotypes in UPDs are usually focused on the documented UPD 6, 7, 11, 14, 15, and 20, which directly lead to imprinting disorders. This study describes clinical phenotypes and genetic findings of three patients with UPD 2, 9, and 14, respectively. Chromosomal microarray (CMA), UPDtool, methylation-specific multiplex ligation-dependent probe amplification (MS-MLPA) and whole-exome sequencing (WES) analysis were performed to characterize the genetic etiology. The CMA revealed a homozygous region involving the whole chromosome 2 and 9, a partial region of homozygosity in chromosome 14. UPD-tool revealed a paternal origin of the UPD2. MS-MLPA showed hypomethylation of imprinting gene MEG3 from maternal origin in the UPD14 case. In addition, UPD14 case displayed complex symptoms including growth failure, hypotonia and acute respiratory distress syndrome (ARDS), accompanied by several gene mutations with heterozygous genotype by WES analysis. Furthermore, we reviewed the documented UPDs and summarized the clinical characteristics and prognosis. This study highlighted the importance to confirm the diagnosis and origin of UPD using genetic testing. Therefore, it is suggested that expanding of the detailed phenotypes and genotypes provide effective guidance for molecule testing and genetic counseling, and promote further biological investigation to the underlying mechanisms of imprinted disorders and accompanied copy number variations.
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Affiliation(s)
- Qi Chen
- Genetic and Prenatal Diagnosis Center, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Yunpeng Chen
- Genetic and Prenatal Diagnosis Center, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Lin Shi
- Department of Ultrasound, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Ying Tao
- Genetic and Prenatal Diagnosis Center, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiaoguang Li
- Genetic and Prenatal Diagnosis Center, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Xiaolan Zhu
- Reproductive Medicine Center, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Yan Yang
- Genetic and Prenatal Diagnosis Center, Fourth Affiliated Hospital of Jiangsu University, Zhenjiang, China
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2
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Polonis K, Lopes JL, Cabral H, Babcock HE, Kline L, Ruiz KM, Schwartz S, Hasadsri L, Rowsey RA, Hoppman NL. Uniparental disomy of multiple chromosomes in two cases with a complex phenotype. Am J Med Genet A 2023. [PMID: 37134191 DOI: 10.1002/ajmg.a.63224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 04/17/2023] [Accepted: 04/21/2023] [Indexed: 05/05/2023]
Abstract
Uniparental disomy (UPD) is the inheritance of both chromosomal homologs from one parent. Depending on the chromosome involved and the parental origin, UPD may result in phenotypic abnormalities due to aberrant methylation patterns or unmasking recessive conditions in isodisomic regions. UPD primarily originates from somatic rescue of a single meiotically-derived aneuploidy, most commonly a trisomy. Double UPD is exceedingly rare and triple UPD has not been previously described. Here, we report two unrelated clinical cases with UPD of multiple chromosomes; an 8-month-old male with maternal isodisomy of chromosome 7 and paternal isodisomy of chromosome 9, and a 4-week-old female with mixed paternal UPD for chromosomes 4, 10, and 14. These cases also demonstrate that although extremely rare, the detection of AOH on two or more chromosomes may warrant additional clinical and laboratory investigation such as methylation and STR marker analysis, especially when involving chromosomes known to be associated with imprinting disorders.
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Affiliation(s)
- Katarzyna Polonis
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Jaime L Lopes
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Huong Cabral
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Holly E Babcock
- Rare Disease Institute, Children's National Hospital, Washington, DC, USA
| | - Laura Kline
- Women's Health and Genetics, Laboratory Corporation of America, Burlington, North Carolina, USA
| | - Kaylee M Ruiz
- Valley Children's Healthcare, Madera, California, USA
| | - Stuart Schwartz
- Women's Health and Genetics, Laboratory Corporation of America, Burlington, North Carolina, USA
| | - Linda Hasadsri
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Ross A Rowsey
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Nicole L Hoppman
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
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3
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Chen CP, Ko TM, Chen SW, Chern SR, Wu FT, Pan YT, Pan CW, Chen YY, Wang W. Low-level mosaic trisomy 9 at amniocentesis associated with a positive non-invasive prenatal testing for trisomy 9, maternal uniparental disomy 9, intrauterine growth restriction and a favorable fetal outcome in a pregnancy. Taiwan J Obstet Gynecol 2023; 62:457-460. [PMID: 37188454 DOI: 10.1016/j.tjog.2023.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2023] [Indexed: 05/17/2023] Open
Abstract
OBJECTIVE We present low-level mosaic trisomy 9 at amniocentesis associated with a positive non-invasive prenatal testing (NIPT) for trisomy 9, maternal uniparental disomy (UPD) 9, intrauterine growth restriction (IUGR) and a favorable fetal outcome in a pregnancy. CASE REPORT A 41-year-old, gravida 3, para 0, woman underwent amniocentesis at 18 weeks of gestation because of NIPT at 10 weeks of gestation suspicious of trisomy 9 in the fetus. This pregnancy was conceived by in vitro fertilization (IVF). Amniocentesis revealed a karyotype of 47,XY,+9 [2]/46,XY[23]. Simultaneous array comparative genomic hybridization (aCGH) analysis on the DNA extracted from uncultured amniocytes revealed arr (1-22) × 2, (X,Y) × 1 and detected no genomic imbalance. Polymorphic DNA marker analysis showed maternal uniparental heterodisomy 9 in the amniocytes. Prenatal ultrasound was normal. The woman was referred for genetic counseling at 22 weeks of gestation. The soluble fms-like tyrosine kinase (sFlt)/placental growth factor (PlGF) = 13.1 (normal < 38). There was no gestational hypertension. Continuing the pregnancy was advised. No repeat amniocentesis was performed because of persistent irregular contractions. IUGR was noted. A 2156-g phenotypically normal baby was delivered at 37 weeks of gestation. The cord blood and umbilical cord had a karyotype of 46,XY (40/40 cells). The placenta had a karyotype of 47,XY,+9 (40/40 cells). The parental karyotypes were normal. Quantitative fluorescence polymerase chain reaction (QF-PCR) on the DNA extracted from parental bloods, cord blood, umbilical cord and placenta revealed maternal uniparental heterodisomy 9 in cord blood and umbilical cord, and trisomy 9 of maternal origin in placenta. When follow-up at age three months, the neonate was normal in development and phenotype. The buccal mucosal cells had 3% (3/101 cells) mosaicism for trisomy 9 by interphase fluorescent in situ hybridization (FISH) analysis. CONCLUSION Mosaic trisomy 9 at prenatal diagnosis should alert the possibility of UPD 9 and include a UPD 9 testing. Low-level mosaic trisomy 9 at amniocentesis can be associated with UPD 9 and a favorable fetal outcome.
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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.
| | - Tsang-Ming Ko
- Genephile Bioscience Laboratory, Ko's Obstetrics and Gynecology, Taipei, Taiwan
| | - Shin-Wen Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Schu-Rern Chern
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
| | - Fang-Tzu Wu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Yen-Ting Pan
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Chen-Wen Pan
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Yun-Yi Chen
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
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Chen CP, Lai TH, Chen SW, Chern SR, Wu FT, Wu PS, Pan YT, Chen WL, Pan CW, Wang W. Low-level mosaic trisomy 9 at amniocentesis in a pregnancy associated with a favorable fetal outcome, intrauterine growth restriction, cytogenetic discrepancy between cultured amniocytes and uncultured amniocytes and perinatal progressive decrease of the aneuploid cell line. Taiwan J Obstet Gynecol 2023; 62:461-465. [PMID: 37188455 DOI: 10.1016/j.tjog.2023.03.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2023] [Indexed: 05/17/2023] Open
Abstract
OBJECTIVE We present low-level mosaic trisomy 9 at amniocentesis in a pregnancy associated with a favorable fetal outcome, intrauterine growth restriction (IUGR), cytogenetic discrepancy between cultured amniocytes and uncultured amniocytes and perinatal progressive decrease of the aneuploid cell line. CASE REPORT A 37-year-old, primigravid woman underwent amniocentesis at 17 weeks of gestation because of advanced maternal age. This pregnancy was conceived by in vitro fertilization and embryo transfer (IVF-ET). Amniocentesis revealed a karyotype of 47,XY,+9[11]/46,XY[32], and simultaneous array comparative genomic hybridization (aCGH) analysis on the DNA extracted from uncultured amniocytes revealed arr (X,Y) × 1, (1-22) × 2 without genomic imbalance. Prenatal ultrasound and parental karyotypes were normal. Repeat amniocentesis at 22 weeks of gestation revealed a karyotype of 47,XY,+9[5]/46,XY[19], and simultaneous aCGH analysis on the DNA extracted from uncultured amniocytes revealed arr 9p24.3q34.3 × 2.1 (log2 ratio = 0.1) compatible with 10-15% mosaicism for trisomy 9. Quantitative fluorescence polymerase chain reaction (QF-PCR) assays excluded uniparental disomy (UPD) 9. A third amniocentesis at 29 weeks of gestation revealed a karyotype of 47,XY,+9[5]/46,XY[18], and simultaneous aCGH analysis on the DNA extracted from uncultured amniocytes revealed arr 9p24.3q34.3 × 2.1 (log2 ratio = 0.1) compatible with 10-15% mosaicism for trisomy 9. Interphase fluorescent in situ hybridization (FISH) analysis on uncultured amniocytes revealed 9% (9/100 cells) mosaicism for trisomy 9. IUGR was noted on prenatal ultrasound. The pregnancy was carried to 38 weeks of gestation, and a 2375-g phenotypically normal male baby was delivered. The karyotypes of umbilical cord, cord blood and placenta were 46,XY (40/40 cells), 47,XY,+9[1]/46,XY[39] and 47,XY,+9[12]/46,XY[28], respectively. QF-PCR assays on placenta showed trisomy 9 of maternal origin. When follow-up at age two months, the neonate was normal in development. The peripheral blood had a karyotype of 46,XY (40/40 cells), and the buccal mucosal cells had 7.5% (8/106 cells) mosaicism for trisomy 9 by interphase FISH analysis. CONCLUSION Low-level mosaic trisomy 9 at amniocentesis can be associated with a favorable fetal outcome and cytogenetic discrepancy between cultured amniocytes and uncultured amniocytes.
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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.
| | - Tsung-Hsuan Lai
- Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
| | - Shin-Wen Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Schu-Rern Chern
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
| | - Fang-Tzu Wu
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | | | - Yen-Ting Pan
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Wen-Lin Chen
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Chen-Wen Pan
- Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan
| | - Wayseen Wang
- Department of Medical Research, Mackay Memorial Hospital, Taipei, Taiwan
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Ma N, Zhu Z, Hu J, Pang J, Yang S, Liu J, Chen J, Tang W, Kuang H, Hu R, Li Z, Wang H, Peng Y, Xi H. Case report: Detection of fetal trisomy 9 mosaicism by multiple genetic testing methods: Report of two cases. Front Genet 2023; 14:1121121. [PMID: 36968600 PMCID: PMC10036773 DOI: 10.3389/fgene.2023.1121121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/27/2023] [Indexed: 03/12/2023] Open
Abstract
Chromosomal mosaicism remains a perpetual diagnostic and clinical dilemma. In the present study, we detected two prenatal trisomy 9 mosaic syndrome cases by using multiple genetic testing methods. The non-invasive prenatal testing (NIPT) results suggested trisomy 9 in two fetuses. Karyotype analysis of amniocytes showed a high level (42%–50%) of mosaicism, and chromosomal microarray analysis (CMA) of uncultured amniocytes showed no copy number variation (CNV) except for large fragment loss of heterozygosity. Ultrasound findings were unmarkable except for small for gestational age. In Case 1, further umbilical blood puncture confirmed 22.4% and 34% trisomy 9 mosaicism by CMA and fluorescent in situ hybridization (FISH) respectively. After comprehensive consideration of the genetic and ultrasound results, the two gravidas decided to receive elective termination and molecular investigations of multiple tissue samples from the aborted fetus and the placenta. The results confirmed the presence of true fetoplacental mosaicism with levels of trisomy 9 mosaicism from 76% to normal in various tissues. These two cases highlight the necessity of genetic counseling for gravidas whose NIPT results highly suggest the risk of chromosome 9 to ascertain the occurrence of mosaicism. In addition, the comprehensive use of multiple genetic techniques and biological samples is recommended for prenatal diagnosis to avoid false-negative results. It should also be noted that ultrasound results of organs with true trisomy 9 mosaicism can be free of structural abnormalities during pregnancy.
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Affiliation(s)
- Na Ma
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Zhenhua Zhu
- Department of General Surgery, Changsha Central Hospital Affiliated to University of South China, Changsha, China
| | - Jiancheng Hu
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Jialun Pang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Shuting Yang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Jing Liu
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Jing Chen
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Wanglan Tang
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Haiyan Kuang
- Department of Ultrasonography, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Rong Hu
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
| | - Zhuo Li
- Center for Medical Genetics and Hunan Key Laboratory of Medical Genetics School of Life Sciences, School of Life Sciences, Central South University, Changsha, China
| | - Hua Wang
- Department of Medical Genetics, Hunan Children’s Hospital, Changsha, China
| | - Ying Peng
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
- *Correspondence: Ying Peng, ; Hui Xi,
| | - Hui Xi
- Department of Medical Genetics, Hunan Provincial Maternal and Child Healthcare Hospital, Changsha, China
- *Correspondence: Ying Peng, ; Hui Xi,
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Lannoo L, van Straaten K, Breckpot J, Brison N, De Catte L, Dimitriadou E, Legius E, Peeters H, Parijs I, Tsuiko O, Vancoillie L, Vermeesch JR, Van Buggenhout G, Van Den Bogaert K, Van Calsteren K, Devriendt K. Rare autosomal trisomies detected by non-invasive prenatal testing: an overview of current knowledge. Eur J Hum Genet 2022; 30:1323-1330. [PMID: 35896702 PMCID: PMC9712527 DOI: 10.1038/s41431-022-01147-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Revised: 06/15/2022] [Accepted: 06/30/2022] [Indexed: 12/16/2022] Open
Abstract
Non-invasive prenatal testing has been introduced for the detection of Trisomy 13, 18, and 21. Using genome-wide screening also other "rare" autosomal trisomies (RATs) can be detected with a frequency about half the frequency of the common trisomies in the large population-based studies. Large prospective studies and clear clinical guidelines are lacking to provide adequate counseling and management to those who are confronted with a RAT as a healthcare professional or patient. In this review we reviewed the current knowledge of the most common RATs. We compiled clinical relevant parameters such as incidence, meiotic or mitotic origin, the risk of fetal (mosaic) aneuploidy, clinical manifestations of fetal mosaicism for a RAT, the effect of confined placental mosaicism on placental function and the risk of uniparental disomy (UPD). Finally, we identified gaps in the knowledge on RATs and highlight areas of future research. This overview may serve as a first guide for prenatal management for each of these RATs.
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Affiliation(s)
- Lore Lannoo
- Department of Obstetrics and Gynaecology, Division Woman and Child, University Hospitals Leuven, Leuven, Belgium
| | | | - Jeroen Breckpot
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Nathalie Brison
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Luc De Catte
- Department of Obstetrics and Gynaecology, Division Woman and Child, University Hospitals Leuven, Leuven, Belgium
| | | | - Eric Legius
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Hilde Peeters
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Ilse Parijs
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Olga Tsuiko
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Leen Vancoillie
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | | | | | | | - Kristel Van Calsteren
- Department of Obstetrics and Gynaecology, Division Woman and Child, University Hospitals Leuven, Leuven, Belgium
| | - Koenraad Devriendt
- Department of Human Genetics, University Hospitals Leuven, Leuven, Belgium.
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7
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Li H, Lu L, Yao Y, Gao T, Jiang Y, Zhang C, Liu N, Song J, Wang W, Liu L. Perinatal outcomes of prenatal cases testing positive for trisomy 9 by noninvasive prenatal testing. Taiwan J Obstet Gynecol 2022; 61:965-970. [DOI: 10.1016/j.tjog.2022.07.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/24/2022] [Indexed: 11/24/2022] Open
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8
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Wang C, Chen Y, Zhao J, Xia Y. Prenatal diagnosis and genetic counseling of low-level trisomy 9 mosaicism with a favorable outcome. Taiwan J Obstet Gynecol 2021; 59:786-787. [PMID: 32917340 DOI: 10.1016/j.tjog.2020.07.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/21/2020] [Indexed: 11/16/2022] Open
Affiliation(s)
- Chaoyun Wang
- Department of Reproductive Medical Center, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China
| | - Yong Chen
- Department of Emergency Medicine, Tongji Medical College, Huazhong University of Science & Technology, Wuhan, Hubei, China
| | - Ju Zhao
- Department of Maternal Health Care, Shiyan Maternal and Child Health Hospital, Shiyan, Hubei, China
| | - Yanzhi Xia
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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9
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Li D, Wang Y, Zhao N, Chang L, Liu P, Tian C, Qiao J. A case report and mechanism analysis of a normal phenotype mosaic 47, XXY complicated by paternal iUPD (9) who had a normal PGD result. BMC MEDICAL GENETICS 2019; 20:172. [PMID: 31699048 PMCID: PMC6839220 DOI: 10.1186/s12881-019-0897-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 09/25/2019] [Indexed: 11/18/2022]
Abstract
Background Uniparental disomy (UPD) refers to the situation in which two copies of homologous chromosomes or part of a chromosome originate from the one parent and no copy is supplied by the other parent. Case presentation Here, we reported a woman whose karyotype was 46, XX, t (1;17)(q42;q21), has obtained 5 embryos by intracytoplasmic sperm injection (ICSI) after one cycle of in vitro fertility (IVF). After microarray-based comparative genomic hybridization (array-CGH) for preimplantation genetic testing for chromosomal structural rearrangements (PGT-SR), two embryos were balanced, one balanced embryo was implanted and the patient successfully achieved pregnancy. Amniocentesis was performed at the 19th week of gestation for karyotype analysis and single nucleotide polymorphism (SNP)-array test. The result of karyotype analysis was: mos 47, XXY [19]/46, XY [81]; SNP-array results revealed 46, XY, iUPD (9) pat. After full genetic counseling for mosaic Klinefelter’s syndrome and paternal iUPD (9), the couple decided to continue pregnancy, and the patient gave birth to a healthy boy. The newborn is now 3.5 years old, and developed normally. This case will provide counseling evidences of paternal iUPD (9) for doctors. Conclusions This is the first case report of paternal iUPD9 with mosaic Klinefelter’s syndrome, and no abnormality has been observed during the 3.5-year follow-up. Further observation is required to determine whether the imprinted genes on the chromosomes are pathogenic and whether recessive pathogenetic genes are activated.
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Affiliation(s)
- Dan Li
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China
| | - Yun Wang
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China
| | - Nan Zhao
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China
| | - Liang Chang
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China
| | - Ping Liu
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China.,National Clinical Research Center for Obstetrics and Gynecology, Beijing, 100191, China.,Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, 100191, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China
| | - Chan Tian
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China. .,National Clinical Research Center for Obstetrics and Gynecology, Beijing, 100191, China. .,Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, 100191, China. .,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
| | - Jie Qiao
- Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, People's Republic of China.,National Clinical Research Center for Obstetrics and Gynecology, Beijing, 100191, China.,Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, 100191, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.,Beijing Advanced Innovation Center for Genomic, Beijing, 100871, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, 100871, China
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10
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Goltsov AY, Mukosey IS, Kochetkova TO, Shubina J, Kuznetsova MV, Stupko OK, Barkov IY, Rebrikov DV, Trofimov DY. Detection of chromosomal rearrangements in the short arms of chromosomes 4 and 12 as an example of a whole-genome approach to noninvasive prenatal testing. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2019. [DOI: 10.24075/brsmu.2019.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Timely detection of fetal aneuploidy is an important aspect of clinical practice. At present, analytical techniques involving high-throughput sequencing are on the rise. Noninvasive prenatal testing (NIPT) ensures reliable results as early as week 9–11 into pregnancy. This article describes a clinical case of NIPT application and further verification of its results. Using next-generation sequencing, the microarray analysis of cell-free DNA in the amniotic fluid and the cytogenetic analysis of fetal chromosomes, a high risk of chromosomal rearrangements was detected in the short arms of chromosomes 4 and 12. This prediction was verified by molecular karyotyping conducted in both parents. The mother was found to be a balanced carrier of translocations between chromosomes 4 and 12. This case demonstrates the advantages of a whole-genome approach to NIPT over targeted-based.
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Affiliation(s)
- A. Yu. Goltsov
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - I. S. Mukosey
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - T. O. Kochetkova
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - J. Shubina
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - M. V. Kuznetsova
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - O. K. Stupko
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - I. Yu. Barkov
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - D. V. Rebrikov
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
| | - D. Yu. Trofimov
- Kulakov National Medical Research Center for Obstetrics, Gynecology and Perinatology, Moscow, Russia
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Lee CY, Su HJ, Cheng YT, Ku YL, Ngo YG, Chen CM, Ou YC, Lee MC, Shaw SWS. Detection of fetal trisomy 9 mosaicism by noninvasive prenatal testing through maternal plasma DNA sequencing. Taiwan J Obstet Gynecol 2018; 57:594-597. [PMID: 30122585 DOI: 10.1016/j.tjog.2018.06.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2018] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVE Noninvasive prenatal testing (NIPT) is widely used as a powerful screening tool to detect common aneuploidies. However, its application for detection of rare chromosomal abnormalities remains inconclusive. CASE REPORT A 38-year-old woman (gravida 2, para 0) requested NIPT as a primary screening test for fetal aneuploidies at 13 weeks and 1 day of gestation. An unexpected Trisomy 9 (T9) abnormality was highly suspected. Amniocentesis was arranged for further diagnosis at 18 weeks of gestation. Final karyotyping reported 47,XX,+9 [18]/46,XX [12], indicating 60% T9 mosaicism. CONCLUSION This case shows strong evidence that NIPT can be a powerful screening tool to detect rare fetal trisomies at very early gestation.
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Affiliation(s)
- Chung-Yuan Lee
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan; Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan; Department of Nursing, Chang Gung University of Science and Technology, Chia-Yi Campus, Chia-Yi, Taiwan
| | - Hsing-Ju Su
- Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan
| | - Yu-Tzu Cheng
- Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan
| | - Yu-Lun Ku
- Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan
| | - Yeh Giin Ngo
- Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan
| | - Che-Min Chen
- Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan
| | - Yu-Che Ou
- Department of Obstetrics and Gynecology, Chia-Yi Chang Gung Memorial Hospital, Chia-Yi, Taiwan
| | - Meng-Chih Lee
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Sheng-Wen Steven Shaw
- Department of Obstetrics and Gynecology, Taipei Chang Gung Memorial Hospital, Taipei, Taiwan; College of Medicine, Chang Gung University, Taoyuan, Taiwan.
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12
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Detection of paternal uniparental disomy 9 in a neonate with prenatally detected mosaicism for a small supernumerary marker chromosome 9 and a supernumerary ring chromosome 9. Taiwan J Obstet Gynecol 2017; 56:527-533. [DOI: 10.1016/j.tjog.2017.06.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2017] [Indexed: 11/20/2022] Open
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13
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Benn P. Expanding non-invasive prenatal testing beyond chromosomes 21, 18, 13, X and Y. Clin Genet 2016; 90:477-485. [PMID: 27283893 DOI: 10.1111/cge.12818] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/05/2016] [Accepted: 06/07/2016] [Indexed: 12/16/2022]
Abstract
Non-invasive prenatal testing (NIPT) based on cell-free DNA in maternal plasma is being expanded to include additional chromosome abnormalities beyond those involving chromosomes 21, 18, 13, X and Y. Review of population cytogenetic data provides insight into the likely number of additional abnormalities detectable. Additional clinically significant and cytogenetically recognizable abnormalities are present in less than 0.1% of newborns but clinically significant, or potentially significant, sub-microscopic imbalances are expected to be present in 1.7%. Cytogenetic studies on chorionic villus samples suggests that after excluding abnormalities involving chromosomes 21, 18, 13, X and Y, approximately 0.6% of NIPT results may be positive for an unbalanced abnormality attributable to mosaicism but most of these will not be confirmed at amniocentesis or in newborns. NIPT has also been developed for specific microdeletion syndromes and initial experience is now available. Laboratory procedures such as deeper sequencing and additional data analytics are rapidly evolving but even with existing protocols, it is already clear that NIPT does not necessarily need to be limited to trisomies 21, 18, 13 and the sex-chromosome abnormalities. Patient educational materials and genetic counseling services need to be available for women offered expanded NIPT.
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Affiliation(s)
- P Benn
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, CT, USA
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Gekas J, Langlois S, Ravitsky V, Audibert F, van den Berg DG, Haidar H, Rousseau F. Non-invasive prenatal testing for fetal chromosome abnormalities: review of clinical and ethical issues. Appl Clin Genet 2016; 9:15-26. [PMID: 26893576 PMCID: PMC4745955 DOI: 10.2147/tacg.s85361] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Genomics-based non-invasive prenatal screening using cell-free DNA (cfDNA screening) was proposed to reduce the number of invasive procedures in current prenatal diagnosis for fetal aneuploidies. We review here the clinical and ethical issues of cfDNA screening. To date, it is not clear how cfDNA screening is going to impact the performances of clinical prenatal diagnosis and how it could be incorporated in real life. The direct marketing to users may have facilitated the early introduction of cfDNA screening into clinical practice despite limited evidence-based independent research data supporting this rapid shift. There is a need to address the most important ethical, legal, and social issues before its implementation in a mass setting. Its introduction might worsen current tendencies to neglect the reproductive autonomy of pregnant women.
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Affiliation(s)
- Jean Gekas
- Prenatal Diagnosis Unit, Department of Medical Genetics and Pediatrics, Faculty of Medicine, Université Laval, Québec City, QC, Canada
- Department of Medical Biology, CHU de Québec, Québec City, QC, Canada
| | - Sylvie Langlois
- Department of Medical Genetics, University of British Columbia, Vancouver, BC, Canada
| | - Vardit Ravitsky
- Bioethics Program, Department of Social and Preventive Medicine, School of Public Health, University of Montreal, Montreal, QC, Canada
| | - François Audibert
- Department of Obstetrics and Gynecology, Hospital Sainte-Justine, Montreal, QC, Canada
| | - David Gradus van den Berg
- Department of Social and Preventive Medicine, Faculty of Medicine, Université Laval, Québec City, QC, Canada
| | - Hazar Haidar
- Bioethics Program, Department of Social and Preventive Medicine, School of Public Health, University of Montreal, Montreal, QC, Canada
| | - François Rousseau
- Department of Medical Biology, CHU de Québec, Québec City, QC, Canada
- Department of Molecular Biology, Medical Biochemistry and Pathology, Faculty of Medicine, Université Laval, Québec City, QC, Canada
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