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Zhou YC, Zhang C, Zhai JS, Li TF, Wu QY, Li WW, Li N, Li XJ, Huang YF, Cui YX, Xia XY. A patient with unusual features and a 69.5 Mb duplication from a de novo extra der (9): a case report. Mol Med Rep 2015; 12:155-8. [PMID: 25760145 PMCID: PMC4438924 DOI: 10.3892/mmr.2015.3436] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Accepted: 02/11/2015] [Indexed: 11/30/2022] Open
Abstract
Partial trisomy 9 is a common autosomal trisomy, which is characterized by non-specific psychomotor delay, mental retardation and moderately abnormal characteristic facial features. Generally, partial trisomy 9 leads to variable phenotypes depending on the size and position of the duplicated region. However, a precise genotype/phenotype map has not been determined. The present study reports the case of a 3-year-old female with certain typical features of trisomy 9p syndrome, who presented with a number of the distinctive symptoms, as well as sensorineural hearing loss, which has not previously been associated with this trisomy. Karyotype, M-FISH and OaCGH analysis were performed on the patient and her parents. The final karyotype was determined to be 47, XX, +mar.ish der (9) (wcp9+). arr cgh 9pterq21.12 (DOCK8→LOC138225)×3. Cytogenetic results showed a de novo extra der (9) with 69.5 Mb duplication. Although the molecular mechanism underlying the hearing loss is unclear, it was proposed that the 9q13→9q21 region may be critical for hearing.
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Affiliation(s)
- Yu-Chun Zhou
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Cui Zhang
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Jin-Sheng Zhai
- Department of Healthcare, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Tian-Fu Li
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Qiu-Yue Wu
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Wei-Wei Li
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Na Li
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Xiao-Jun Li
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Yu-Feng Huang
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Ying-Xia Cui
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
| | - Xin-Yi Xia
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, P.R. China
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Deng L, Peng Y, Liu J, Wen J, Xia Y, Liang D, Wu L. Brief report adult patient presenting an interstitial (9) (q21.32q31.1) direct duplication resulting from the malsegregation of a paternal balanced insertional translocation. ACTA ACUST UNITED AC 2014; 100:294-9. [DOI: 10.1002/bdra.23215] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Revised: 10/30/2013] [Accepted: 11/08/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Linbei Deng
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan P.R. China
| | - Ying Peng
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan P.R. China
| | - Jing Liu
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan P.R. China
| | - Juan Wen
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan P.R. China
| | - Yan Xia
- Hunan Jiahui Genetics Hospital; Changsha China
| | - Desheng Liang
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan P.R. China
- Hunan Jiahui Genetics Hospital; Changsha China
| | - Lingqian Wu
- State Key Laboratory of Medical Genetics; Central South University; Changsha Hunan P.R. China
- Hunan Jiahui Genetics Hospital; Changsha China
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Neonatal presentation of chromosome 9q33.2-q34.3 duplication. Gene 2013; 527:541-4. [PMID: 23831513 DOI: 10.1016/j.gene.2013.06.043] [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: 03/28/2013] [Revised: 06/07/2013] [Accepted: 06/08/2013] [Indexed: 11/20/2022]
Abstract
Partial terminal duplication of chromosome 9 is a rare anomaly that is known to be associated with specific dysmorphic features. While having common characteristics, these patients also have inconsistent phenotypic features. These inconsistent features may be attributed to the length and the region of the duplicated segment of chromosome 9. We discuss a case of an infant with similar physical features to those previously reported including dysmorphology of the craniofacial region, hands and feet. However we also describe findings of malrotation and renal anomalies. Microarray demonstrated duplication of 9q33.2-q34.3 with normal parental karyotyping. This is the first reported case of duplication of this specific region of chromosome 9q and the phenotypic presentation represents a new constellation of clinical findings.
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Barber JCK, Rodrigues R, Maloney VK, Taborda F, do C Rodrigues M, Bateman MS. Another family with a euchromatic duplication variant of 9q13-q21.1 derived from segmentally duplicated pericentromeric euchromatin. Cytogenet Genome Res 2013; 141:64-9. [PMID: 23651944 DOI: 10.1159/000350870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2013] [Indexed: 11/19/2022] Open
Abstract
Microscopically visible copy number variations within the proximal short arm heterochromatin and proximal long arm of chromosome 9 have been described as euchromatic variants (EVs) and are derived from extensive segmental duplications (SDs) that map to both the proximal short and long arms of chromosome 9. Recently, 3-4 additional copies of an SD cassette were found in 2 families with duplication EVs of 9q13-q21. Here, we report a third family with a duplication EV of 9q13-q21.1 that was ascertained at prenatal diagnosis for advanced maternal age and found in the fetus and her phenotypically normal mother. Dual-colour fluorescence in situ hybridization with bacterial artificial chromosomes RP11-246P17 and RP11-211E19 was consistent with the EV chromosome having 1-2 additional copies of a similar SD cassette, except that the SD-boundary clone RP11-88I18 was not apparently included. It is important to distinguish the 9q13-q21.1 EVs from possible pathogenic imbalances of chromosome 9, especially at prenatal diagnosis, as these EVs have no established phenotypic or reproductive consequences. The nature of the G-dark bands in 9q13-q21 EVs is briefly discussed.
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Affiliation(s)
- J C K Barber
- Department of Human Genetics and Genomic Medicine, Faculty of Medicine, Southampton General Hospital, University of Southampton, Southampton, UK.
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A novel 2.3 mb microduplication of 9q34.3 inserted into 19q13.4 in a patient with learning disabilities. Case Rep Pediatr 2012. [PMID: 23198235 PMCID: PMC3502809 DOI: 10.1155/2012/459602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Insertional translocations in which a duplicated region of one chromosome is inserted into another chromosome are very rare. We report a 16.5-year-old girl with a terminal duplication at 9q34.3 of paternal origin inserted into 19q13.4. Chromosomal analysis revealed the karyotype 46,XX,der(19)ins(19;9)(q13.4;q34.3q34.3)pat. Cytogenetic microarray analysis (CMA) identified a ~2.3Mb duplication of 9q34.3 → qter, which was confirmed by Fluorescence in situ hybridisation (FISH). The duplication at 9q34.3 is the smallest among the cases reported so far. The proband exhibits similar clinical features to those previously reported cases with larger duplication events.
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Papadopoulou E, Sismani C, Christodoulou C, Ioannides M, Kalmanti M, Patsalis P. Phenotype-genotype correlation of a patient with a "balanced" translocation 9;15 and cryptic 9q34 duplication and 15q21q25 deletion. Am J Med Genet A 2010; 152A:1515-22. [PMID: 20503328 DOI: 10.1002/ajmg.a.33302] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We report on a 2-year-old boy with intellectual disabilities, distinctive facies, hypotonia, cardiac, and renal malformations. During his infancy he had recurrent episodes of apnea, cyanosis, and bradycardia. Chromosomal analysis showed a de novo apparently balanced translocation 46,XY,t(9;15)(q31;q26)dn. The use of array-comparative genomic hybridization (CGH) however, revealed the presence of additional cryptic complex chromosomal rearrangements involving a approximately 5-5.8 Mb distal duplication on chromosome 9 (9q34.1 --> 9q34.3), and deletions on three separate regions of chromosome 15 adding to approximately 8.1-12.2 Mb (15q21.2 --> 15q21.3, 15q22.31 --> 15q23, 15q25.1 --> 15q25.2). During confirmation with fluorescence in situ hybridization (FISH) an inversion was unexpectedly revealed on chromosome 15 (15q21.1 --> 15q21.2). To our knowledge this is the first patient reported whose phenotype is due to partial trisomy 9q, and complex interstitial deletions of 15q, not involving the Prader-Willi/Angelman region and encompassing the critical region 15q21q25. We provide correlation between the clinical findings of our patient and the phenotype of the 9q34 duplication syndrome, the 15q21, and the 15q25 deletion syndromes.
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Wu DJ, Wang NJ, Driscoll J, Dorrani N, Liu D, Sigman M, Schanen NC. Autistic disorder associated with a paternally derived unbalanced translocation leading to duplication of chromosome 15pter-q13.2: a case report. Mol Cytogenet 2009; 2:27. [PMID: 20021661 PMCID: PMC2803171 DOI: 10.1186/1755-8166-2-27] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2009] [Accepted: 12/18/2009] [Indexed: 12/04/2022] Open
Abstract
Autism spectrum disorders have been associated with maternally derived duplications that involve the imprinted region on the proximal long arm of chromosome 15. Here we describe a boy with a chromosome 15 duplication arising from a 3:1 segregation error of a paternally derived translocation between chromosome 15q13.2 and chromosome 9q34.12, which led to trisomy of chromosome 15pter-q13.2 and 9q34.12-qter. Using array comparative genome hybridization, we localized the breakpoints on both chromosomes and sequence homology suggests that the translocation arose from non-allelic homologous recombination involving the low copy repeats on chromosome 15. The child manifests many characteristics of the maternally-derived duplication chromosome 15 phenotype including developmental delays with cognitive impairment, autism, hypotonia and facial dysmorphisms with nominal overlap of the most general symptoms found in duplications of chromosome 9q34. This case suggests that biallelically expressed genes on proximal 15q contribute to the idic(15) autism phenotype.
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Affiliation(s)
- David J Wu
- Department of Biological Sciences, University of Delaware, Newark, USA
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Gawlik-Kuklinska K, Iliszko M, Wozniak A, Debiec-Rychter M, Kardas I, Wierzba J, Limon J. A girl with duplication 9q34 syndrome. Am J Med Genet A 2007; 143A:2019-23. [PMID: 17663474 DOI: 10.1002/ajmg.a.31847] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We report on a 17-year-old female with numerous developmental abnormalities associated with 46,XX,dup(9)(q33.3q34.1), where the duplication occurred de novo. The patient presented with dysmorphic features and notable psychomotor delays, manifestations similar to those described in other reported cases of duplication of 9q34-qter. Due to late presentation and diagnosis, our patient was not evaluated and characterized until adolescence, when particular attention was paid to the development of secondary sexual characteristics, secondary amenorrhea and obesity.
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Maraschio P, Maserati E, Seghezzi L, Tupler R, Verri MP, Tiepolo L. Involvement of 9q22.1-31.3 region in pyloric stenosis. Clin Genet 1998; 54:159-60. [PMID: 9761397 DOI: 10.1111/j.1399-0004.1998.tb03721.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mattina T, Pierluigi M, Mazzone D, Scardilli S, Perfumo C, Mollica F. Double partial trisomy 9q34.1-->qter and 21pter-->q22.11: FISH and clinical findings. J Med Genet 1997; 34:945-8. [PMID: 9391894 PMCID: PMC1051128 DOI: 10.1136/jmg.34.11.945] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We describe a patient with double trisomy 9q34.1-->qter and 21pter-->q22.1 resulting from 3:1 segregation of a maternal balanced translocation. The patient shows a clinical syndrome similar to that observed in patients with duplication of the chromosome 9q distal region, while no signs of trisomy 21 were observed. The use of high resolution banding and FISH were of fundamental importance for the cytogenetic diagnosis and for definition of the breakpoints on both chromosomes 9 and 21.
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Affiliation(s)
- T Mattina
- Scuola di Specializzazione in Genetica Medica, Clinica Pediatrica I, Catania, Italy
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