1
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Murphey K, George PE, Pencheva B, Porter CC, Wechsler SB, Gambello MJ, Li H. Acute myeloid leukemia and dilated cardiomyopathy in a pediatric patient with D-2-hydroxyglutaric aciduria type I. Am J Med Genet A 2022; 188:2707-2711. [PMID: 35785415 DOI: 10.1002/ajmg.a.62891] [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: 03/07/2022] [Revised: 04/18/2022] [Accepted: 04/25/2022] [Indexed: 01/25/2023]
Abstract
D-2-hydroxyglutaric aciduria (D-2-HGA) is a rare neurometabolic disease with two main subtypes, caused by either inactivating variants in D2HGDH (type I) or germline gain of function variants in IDH2 (type II), that result in accumulation of the same toxic metabolite, D-2-hydroxyglutarate. The main clinical features of both are neurologic, including developmental delay, hypotonia, and seizures. Dilated cardiomyopathy is a unique feature thus far only reported in type II. As somatic variants in IDH2 are frequently identified in several different types of cancer, including acute myeloid leukemia (AML), a link between cancer and this metabolic disease has been proposed; however, there is no reported cancer in patients with either type of D-2-HGA. Murine models have demonstrated how D-2-hydroxyglutarate alters metabolism and epigenetics, a potential mechanism by which this metabolite may cause cancer and cardiomyopathy. Here, we report the first case of both AML and dilated cardiomyopathy in a pediatric patient with D-2-HGA type I, who was treated with an anthracycline-free regimen. This report may expand the clinical spectrum of this rare metabolic disease and provide insight on long-term surveillance and care. However, this case is complicated by the presence of a complex chromosomal rearrangement resulting in a 25.5 Mb duplication of 1q41 and a 2.38 Mb deletion of 2q37.3. Thus, the direct causal relationship between D-2-HGA and leukemogenesis or cardiomyopathy warrants further scrutiny.
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Affiliation(s)
- Kristen Murphey
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Paul E George
- Aflac Cancer and Blood Disorders Center, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA.,Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Bojana Pencheva
- Aflac Cancer and Blood Disorders Center, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA.,Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Christopher C Porter
- Aflac Cancer and Blood Disorders Center, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA.,Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Stephanie Burns Wechsler
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA.,Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA.,Sibley Heart Center Cardiology, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Michael J Gambello
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA.,Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Hong Li
- Department of Human Genetics, Emory University School of Medicine, Atlanta, Georgia, USA.,Department of Pediatrics, Emory University School of Medicine & Children's Healthcare of Atlanta, Atlanta, Georgia, USA
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2
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Vafaeie F, Ale Rasoul M, Rahnama M, Mojarrad M. Identification of Balanced and Unbalanced Complex Chromosomal Rearrangement Involving Chromosomes 1, 11, and 15. Cureus 2021; 13:e16166. [PMID: 34367776 PMCID: PMC8330808 DOI: 10.7759/cureus.16166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2021] [Indexed: 11/23/2022] Open
Abstract
Chromosomal abnormalities are the common genetic factors that significantly impact fertility, miscarriage possibility and abnormal offspring with unbalanced karyotype. Complex chromosomal rearrangements (CCRs) refer to structural rearrangements which involve more than two breakpoints and often more than two chromosomes. According to the mode of transmission, they can be either familial or de novo rearrangements. Here we report a complex chromosomal rearrangement leading to intellectual disability, speech delay and multiple dysmorphic features, including cleft lip and inguinal hernia. Proband karyotype shows 46,XY,ins (1::11) (q42→qter::q25) compatible to partial trisomy 1 q42→qter, while the karyotype of his mother was 45,XX, ins (1::15) (q42;q11.1→qter), t (1;11)(q42,q25) compatible to apparently normal female phenotype.
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Affiliation(s)
- Farzane Vafaeie
- Medical Genetics Laboratory, Genetic Foundation of Khorasan Razavi, Mashhad, IRN
| | - Masoume Ale Rasoul
- Medical Genetics Laboratory, Genetic Foundation of Khorasan Razavi, Mashhad, IRN.,Department of Medical Genetics, Mashhad University of Medical Sciences, Mashhad, IRN
| | - Maryam Rahnama
- Medical Genetics Laboratory, Genetic Foundation of Khorasan Razavi, Mashhad, IRN
| | - Majid Mojarrad
- Medical Genetics Laboratory, Genetic Foundation of Khorasan Razavi, Mashhad, IRN.,Department of Medical Genetics, Mashhad University of Medical Sciences, Mashhad, IRN.,Genetic Research Center, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, IRN
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3
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Liu M, Ren Y, Wang X, Lu X, Li M, Kim YM, Li S, Zhang L. Two rare cases of acute myeloid leukemia with t(8;16)(p11.2;p13.3) and 1q duplication: case presentation and literature review. Mol Cytogenet 2020; 13:37. [PMID: 32863883 PMCID: PMC7448493 DOI: 10.1186/s13039-020-00507-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 08/12/2020] [Indexed: 11/18/2022] Open
Abstract
Background Acute myeloid leukemia (AML) is a complex hematological disease characterized by genetic and clinical heterogeneity. The identification and understanding of chromosomal abnormalities are important for the diagnosis and management of AML patients. Compared with recurrent chromosomal translocations in AML, t(8;16)(p11.2;p13.3) can be found in any age group but is very rare and typically associated with poor prognosis. Methods Conventional cytogenetic studies were performed among 1,824 AML patients recorded in our oncology database over the last 20 years. Fluorescence in situ hybridization (FISH) was carried out to detect the translocation fusion. Array comparative genome hybridization (aCGH) was carried out to further characterize the duplication of chromosomes. Results We identified three AML patients with t(8;16)(p11.2;p13.3) by chromosome analysis. Two of the three patients, who harbored an additional 1q duplication, were detected by FISH and aCGH. aCGH characterized a 46.7 Mb and 49.9 Mb gain in chromosome 1 at band q32.1q44 separately in these two patients. One patient achieved complete remission (CR) but relapsed 3 months later. The other patient never experienced CR and died 2 years after diagnosis. Conclusion A 1q duplication was detected in two of three AML patients with t(8;16)(p11.2;p13.3), suggesting that 1q duplication can be a recurrent event in AML patients with t(8;16). In concert with the findings of previous studies on similar patients, our work suggests that 1q duplication may also be an unfavorable prognostic factor of the disease.
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Affiliation(s)
- Meng Liu
- Department of Hematology, The First Hospital of China Medical University, 155 Nanjing North Street, Shenyang, 110000 Liaoning People's Republic of China.,Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Yuan Ren
- Department of Hematology, The First Hospital of China Medical University, 155 Nanjing North Street, Shenyang, 110000 Liaoning People's Republic of China.,Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Xianfu Wang
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Xianglan Lu
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Ming Li
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA.,Department of Neurology, The Second Hospital of Jilin University, Jilin, People's Republic of China
| | - Young Mi Kim
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Shibo Li
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK USA
| | - Lijun Zhang
- Department of Hematology, The First Hospital of China Medical University, 155 Nanjing North Street, Shenyang, 110000 Liaoning People's Republic of China
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4
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AlSaad R, ElMansoury J, AlHazzaa SAF, Dirar QS. Chromosome 1q Terminal Deletion and Congenital Glaucoma: A Case Report. AMERICAN JOURNAL OF CASE REPORTS 2020; 21:e918128. [PMID: 31927558 PMCID: PMC6977633 DOI: 10.12659/ajcr.918128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND This paper aims to highlight the presence of primary congenital glaucoma (PCG) in a patient with chromosome 1 q31 and q42.1 deletion of the distal long arm. The characteristic combination of phenotypic features in this deletion include dysmorphic features, psychomotor retardation and neurological signs; however, PCG has never been recognized as part of these features before. CASE REPORT This is a case of an 8-year-old female with chromosome 1 q31 and q42.1 deletion with congenital glaucoma since birth. She was found to have bilateral buphthalmos and large cloudy corneas and was also unable to follow or fixate in any directional gaze with either eye. Family history was negative for congenital glaucoma and both parents are healthy and non-consanguineous. Karyotyping showed chromosome 1 microdeletion, 46, XX, del (1) (q31q42.1) on high resolution G-banding. Further genetic testing showed no mutations in the CYP1B1 gene. CONCLUSIONS In summary, we describe a rare presentation of congenital bilateral glaucoma in the context of chromosome 1 q31 and q42.1 deletion. This clinical manifestation is uncommon when compared with that of other subsets of chromosome 1 deletions. Thus, we emphasize the need to explore factors contributing to the development of PCG in patients with chromosomal 1 deletion.
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Affiliation(s)
- Rakan AlSaad
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Jeylan ElMansoury
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.,Department of Ophthalmology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Selwa A F AlHazzaa
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.,Department of Ophthalmology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Qais S Dirar
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia.,Department of Ophthalmology, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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Cheng X, Yang Q, Liu J, Ye J, Xiao H, Zhang G, Pan Y, Li X, Hao R, Li Y. Constitutional 763.3 Kb chromosome 1q43 duplication encompassing only CHRM3 gene identified by next generation sequencing (NGS) in a child with intellectual disability. Mol Cytogenet 2019; 12:16. [PMID: 31019551 PMCID: PMC6472087 DOI: 10.1186/s13039-019-0427-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Accepted: 03/26/2019] [Indexed: 01/08/2023] Open
Abstract
Background Deletion or duplication on the distal portion of the long arm of chromosome 1 result in complex and highly variable clinical phenotype including. intellectual disability and autism. Case presentation We report on a patient with intellectual disability and a 763.3 Kb duplication on 1q43 that includes only CHRM3, which was detected by next generation sequencing (NGS). The patient presented with intellectual disability, developmental delay, autistic behavior, limited or no speech, social withdrawal, self-injurious, feeding difficulties, strabismus, short stature, hand anomalie, and no seizures, anxiety, or mood swings, and clinodactyly. Conclusions We propose that CHRM3 is the critical gene responsible for the common characteristics in the cases with 1q43 duplication and deletion.
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Affiliation(s)
- Xiaofei Cheng
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Qifang Yang
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Jun Liu
- 2Department of Radiology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Juan Ye
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Huiying Xiao
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Gaimei Zhang
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Yuanyuan Pan
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Xia Li
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Ruifeng Hao
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
| | - Yinfeng Li
- 1Department of Obstetrics and Gynecology, the First Hospital of Huhhot City, Inner Mongolia, China
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Morokawa H, Kamiya M, Wakui K, Kobayashi M, Kurata T, Matsuda K, Kawamura R, Kanno H, Fukushima Y, Nakazawa Y, Kosho T. Myelodysplastic syndrome in an infant with constitutional pure duplication 1q41-qter. Hum Genome Var 2018; 5:6. [PMID: 29796285 PMCID: PMC5960645 DOI: 10.1038/s41439-018-0008-8] [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: 01/07/2018] [Revised: 03/25/2018] [Accepted: 03/30/2018] [Indexed: 11/09/2022] Open
Abstract
We report on a Japanese female infant as the fourth patient with the constitutional pure duplication 1q41-qter confirmed by chromosomal microarray and as the first who developed myelodysplastic syndrome (MDS) among those with the constitutional 1q duplication. Common clinical features of the constitutional pure duplication 1q41-qter include developmental delay, craniofacial characteristics, foot malformation, hypertrichosis, and respiratory insufficiency. The association between MDS and the duplication of the genes in the 1q41-qter region remains unknown.
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Affiliation(s)
- Hirokazu Morokawa
- 1Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Motoko Kamiya
- 1Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan.,2Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan
| | - Keiko Wakui
- 2Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan.,3Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Mikiko Kobayashi
- 4Department of Pathology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Takashi Kurata
- 1Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kazuyuki Matsuda
- 5Department of Laboratory Medicine, Shinshu University Hospital, Matsumoto, Japan
| | - Rie Kawamura
- 2Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan.,3Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hiroyuki Kanno
- 4Department of Pathology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoshimitsu Fukushima
- 2Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan.,3Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yozo Nakazawa
- 1Department of Pediatrics, Shinshu University School of Medicine, Matsumoto, Japan
| | - Tomoki Kosho
- 2Center for Medical Genetics, Shinshu University Hospital, Matsumoto, Japan.,3Department of Medical Genetics, Shinshu University School of Medicine, Matsumoto, Japan
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7
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Luo A, Cheng D, Yuan S, Li H, Du J, Zhang Y, Yang C, Lin G, Zhang W, Tan YQ. Maternal interchromosomal insertional translocation leading to 1q43-q44 deletion and duplication in two siblings. Mol Cytogenet 2018; 11:24. [PMID: 29636822 PMCID: PMC5883343 DOI: 10.1186/s13039-018-0371-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 03/08/2018] [Indexed: 12/05/2022] Open
Abstract
Background 1q43-q44 deletion syndrome is a well-defined chromosomal disorder which is characterized by moderate to severe mental retardation, and variable but characteristic facial features determined by the size of the segment and the number of genes involved. However, patients with 1q43-q44 duplication with a clinical phenotype comparable to that of 1q43-q44 deletion are rarely reported. Moreover, pure 1q43-q44 deletions and duplications derived from balanced insertional translocation within the same family with precisely identified breakpoints have not been reported. Case presentation The proband is a 6-year-old girl with profound developmental delay, mental retardation, microcephaly, epilepsy, agenesis of the corpus callosum and hearing impairment. Her younger brother is a 3-month-old boy with macrocephaly and mild developmental delay in gross motor functions. G-banding analysis of the subjects at the 400-band level did not reveal any subtle structural changes in their karyotypes. However, single-nucleotide polymorphism (SNP) array analysis showed a deletion and a duplication of approximately 6.0 Mb at 1q43-q44 in the proband and her younger brother, respectively. The Levicare analysis pipeline of whole-genome sequencing (WGS) further demonstrated that a segment of 1q43-q44 was inserted at 14q23.1 in the unaffected mother, which indicated that the mother was a carrier of a 46,XX,ins(14;1)(q23.1;q43q44) insertional translocation. Moreover, Sanger sequencing was used to assist the mapping of the breakpoints and the final validation of those breakpoints. The breakpoint on chromosome 1 disrupted the EFCAB2 gene in the first intron, and the breakpoint on chromosome 14 disrupted the PRKCH gene within the 12th intron. In addition, fluorescence in situ hybridization (FISH) further confirmed that the unaffected older sister of the proband carried the same karyotype as the mother. Conclusion Here, we describe a rare family exhibiting pure 1q43-q44 deletion and duplication in two siblings caused by a maternal balanced insertional translocation. Our study demonstrates that WGS with a carefully designed analysis pipeline is a powerful tool for identifying cryptic genomic balanced translocations and mapping the breakpoints at the nucleotide level and could be an effective method for explaining the relationship between karyotype and phenotype. Electronic supplementary material The online version of this article (10.1186/s13039-018-0371-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Aixiang Luo
- 1Institute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078 People's Republic of China
| | - Dehua Cheng
- 1Institute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078 People's Republic of China.,2Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan 410078 People's Republic of China
| | - Shimin Yuan
- 2Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan 410078 People's Republic of China
| | - Haiyu Li
- 1Institute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078 People's Republic of China
| | - Juan Du
- 1Institute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078 People's Republic of China.,2Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan 410078 People's Republic of China
| | - Yang Zhang
- 3School of Biological Sciences, Faculty of Science, The University of Hong Kong, Hong Kong, 999077 People's Republic of China
| | - Chuanchun Yang
- Cheerland Precision Biomed Co., Ltd., Shenzhen, Guangdong 518055 People's Republic of China
| | - Ge Lin
- 1Institute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078 People's Republic of China.,2Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan 410078 People's Republic of China
| | - Wenyong Zhang
- Southern University of Science and Technology, Shenzhen, Guangdong 518055 People's Republic of China
| | - Yue-Qiu Tan
- 1Institute of Reproduction and Stem Cell Engineering, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078 People's Republic of China.,2Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan 410078 People's Republic of China
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A case with concurrent duplication, triplication, and uniparental isodisomy at 1q42.12-qter supporting microhomology-mediated break-induced replication model for replicative rearrangements. Mol Cytogenet 2017; 10:15. [PMID: 28465723 PMCID: PMC5410019 DOI: 10.1186/s13039-017-0316-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 04/21/2017] [Indexed: 12/04/2022] Open
Abstract
Background Complex genomic rearrangements (CGRs) consisting of interstitial triplications in conjunction with uniparental isodisomy (isoUPD) have rarely been reported in patients with multiple congenital anomalies (MCA)/intellectual disability (ID). One-ended DNA break repair coupled with microhomology-mediated break-induced replication (MMBIR) has been recently proposed as a possible mechanism giving rise to interstitial copy number gains and distal isoUPD, although only a few cases providing supportive evidence in human congenital diseases with MCA have been documented. Case presentation Here, we report on the chromosomal microarray (CMA)-based identification of the first known case with concurrent interstitial duplication at 1q42.12-q42.2 and triplication at 1q42.2-q43 followed by isoUPD for the remainder of chromosome 1q (at 1q43-qter). In distal 1q duplication/triplication overlapping with 1q42.12-q43, variable clinical features have been reported, and our 25-year-old patient with MCA/ID presented with some of these frequently described features. Further analyses including the precise mapping of breakpoint junctions within the CGR in a sequence level suggested that the CGR found in association with isoUPD in our case is a triplication with flanking duplications, characterized as a triplication with a particularly long duplication-inverted triplication-duplication (DUP-TRP/INV-DUP) structure. Because microhomology was observed in both junctions between the triplicated region and the flanking duplicated regions, our case provides supportive evidence for recently proposed replication-based mechanisms, such as MMBIR, underlying the formation of CGRs + isoUPD implicated in chromosomal disorders. Conclusions To the best of our knowledge, this is the first case of CGRs + isoUPD observed in 1q and having DUP-TRP/INV-DUP structure with a long proximal duplication, which supports MMBIR-based model for genomic rearrangements. Molecular cytogenetic analyses using CMA containing single-nucleotide polymorphism probes with further analyses of the breakpoint junctions are recommended in cases suspected of having complex chromosomal abnormalities based on discrepancies between clinical and conventional cytogenetic findings. Electronic supplementary material The online version of this article (doi:10.1186/s13039-017-0316-6) contains supplementary material, which is available to authorized users.
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9
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Calcagno DQ, Takeno SS, Gigek CO, Leal MF, Wisnieski F, Chen ES, Araújo TMT, Lima EM, Melaragno MI, Demachki S, Assumpção PP, Burbano RR, Smith MC. Identification of IL11RA and MELK amplification in gastric cancer by comprehensive genomic profiling of gastric cancer cell lines. World J Gastroenterol 2016; 22:9506-9514. [PMID: 27920471 PMCID: PMC5116594 DOI: 10.3748/wjg.v22.i43.9506] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 09/10/2016] [Accepted: 10/10/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To identify common copy number alterations on gastric cancer cell lines.
METHODS Four gastric cancer cell lines (ACP02, ACP03, AGP01 and PG100) underwent chromosomal comparative genome hybridization and array comparative genome hybridization. We also confirmed the results by fluorescence in situ hybridization analysis using the bacterial artificial chromosome clone and quantitative real time PCR analysis.
RESULTS The amplification of 9p13.3 was detected in all cell lines by both methodologies. An increase in the copy number of 9p13.3 was also confirmed by fluorescence in situ hybridization analysis. Moreover, the interleukin 11 receptor alpha (IL11RA) and maternal embryonic leucine zipper kinase (MELK) genes, which are present in the 9p13.3 amplicon, revealed gains of the MELK gene in all the cell lines studied. Additionally, a gain in the copy number of IL11RA and MELK was observed in 19.1% (13/68) and 55.9% (38/68) of primary gastric adenocarcinoma samples, respectively.
CONCLUSION The characterization of a small gain region at 9p13.3 in gastric cancer cell lines and primary gastric adenocarcinoma samples has revealed MELK as a candidate target gene that is possibly related to the development of gastric cancer.
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10
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Kim SW, Kim J, Jeon HR, Park MJ, Kim Y. Rehabilitation Treatment of a Child Diagnosed With Duplication of 1q42-q44: A Case Report. Ann Rehabil Med 2016; 40:938-942. [PMID: 27847725 PMCID: PMC5108722 DOI: 10.5535/arm.2016.40.5.938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Accepted: 03/04/2016] [Indexed: 12/03/2022] Open
Abstract
Trisomy 1 is a rare chromosomal anomaly and has never been reported in Korea. Clinical features of trisomy 1 include macrocephaly, prominent forehead, flat nasal bridge, low set ears, and micrognathia, all of which result in a very distinguishable facial structure. A child with trisomy 1 also suffers from mental retardation and/or developmental delays. In this case report, the child was diagnosed with de novo trisomy 1 without receiving any treatment until visiting our hospital. The child suffered from foot and ankle deformities, leading her unable to stand independently. Here we report the surgical treatment and rehabilitation treatment that enabled the child to walk independently.
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Affiliation(s)
- Seong Woo Kim
- Department of Physical Medicine and Rehabilitation, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Jiyong Kim
- Department of Physical Medicine and Rehabilitation, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Ha Ra Jeon
- Department of Physical Medicine and Rehabilitation, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Min Jung Park
- Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Yoon Kim
- Department of Physical Medicine and Rehabilitation, National Health Insurance Service Ilsan Hospital, Goyang, Korea
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11
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Wang J, Fu C, Zhang S, Luo J, Ouyang L, Xie B, Sun W, He S, Su J, Hu X, Fei D, Chen R, Fan X, Ou S, Chen S, Shen Y. A rare occurrence of two large de novo duplications on 1q42-q44 and 9q21.12-q21.33. Gene 2016; 594:59-65. [PMID: 27591971 DOI: 10.1016/j.gene.2016.08.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 08/09/2016] [Accepted: 08/25/2016] [Indexed: 01/15/2023]
Abstract
De novo partial distal 1q trisomy is uncommon and mostly occurs in combination with monosomy of another chromosome due to a parental translocation. Distal 1q trisomy co-occurring with another de novo duplication on a separate chromosome is extremely rare. Here, we reported a patient carrying two large de novo interstitial duplications including a 20Mb duplication at 1q42-q44 and a 14.2Mb duplication at 9q21.12-q21.33. The patient presented with features of pre- and postnatal growth retardation, low birth weight, failure to thrive, developmental delay and frequent infection. Her dysmorphic features included macrocephaly, prominent forehead, triangular face, wide fontanelle, hypertelorism, flat nasal bridge, tented mouth, micrognathia, protruding and low-set ears, slender limbs with toe-walking appearance. In addition, she presented with subdural hematoma. The clinical presentations of this patient are mostly consistent with those of distal 1q trisomy syndrome or 9q interstitial duplication. The interstitial 1q trisomy may have contributed to the macrocephaly, prominent forehead and limb abnormalities of our patient. Either or both de novo duplications could have contributed to the features of growth retardation, developmental delay and dysmorphic features including hypertelorism, low-set ears and abnormal nose/nasal bridge.
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Affiliation(s)
- Jin Wang
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Chunyun Fu
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Shujie Zhang
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Jingsi Luo
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Luping Ouyang
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Bobo Xie
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Weijia Sun
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Sheng He
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Jiasun Su
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Xuyun Hu
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Dongmei Fei
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Rongyu Chen
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Xin Fan
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Shan Ou
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China
| | - Shaoke Chen
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China.
| | - Yiping Shen
- Laboratory of Genetics and Metabolism, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region; Guangxi Birth Defects Prevention and Control Institute, Nanning 530003, Guangxi, People's Republic of China; Department of Laboratory Medicine, Department of Pathology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, United States; Claritas Genomics, Cambridge, MA 02139, United States.
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12
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Watanabe S, Shimizu K, Ohashi H, Kosaki R, Okamoto N, Shimojima K, Yamamoto T, Chinen Y, Mizuno S, Dowa Y, Shiomi N, Toda Y, Tashiro K, Shichijo K, Minatozaki K, Aso S, Minagawa K, Hiraki Y, Shimokawa O, Matsumoto T, Fukuda M, Moriuchi H, Yoshiura KI, Kondoh T. Detailed analysis of 26 cases of 1q partial duplication/triplication syndrome. Am J Med Genet A 2016; 170A:908-17. [PMID: 26782913 DOI: 10.1002/ajmg.a.37496] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 11/16/2015] [Indexed: 11/10/2022]
Abstract
Partial 1q trisomy syndrome is a rare disorder. Because unbalanced chromosomal translocations often occur with 1q trisomy, it is difficult to determine whether patient symptoms are related to 1q trisomy or other chromosomal abnormalities. The present study evaluated genotype-phenotype correlations of 26 cases diagnosed with 1q partial trisomy syndrome. DNA microarray was used to investigate the duplication/triplication region of 16 cases. Although there was no overlapping region common to all 26 cases, the 1q41-qter region was frequently involved. One case diagnosed as a pure interstitial trisomy of chromosome 1q by G-banded karyotype analysis was instead found to be a pure partial tetrasomy by CytoScan HD Array. In four 1q trisomy syndrome cases involving translocation, the translocated partner chromosome could not be detected by DNA microarray analyzes despite G-banded karyotype analysis, because there were a limited number of probes available for the partner region. DNA microarray and G-banded karyotyping techniques were therefore shown to be compensatory diagnostic tools that should be used by clinicians who suspect chromosomal abnormalities. It is important to continue recruiting affected patients and observe and monitor their symptoms to reveal genotype-phenotype correlations and to fully understand their prognosis and identify causal regions of symptoms.
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Affiliation(s)
- Satoshi Watanabe
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Kenji Shimizu
- Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan
| | - Hirofumi Ohashi
- Division of Medical Genetics, Saitama Children's Medical Center, Saitama, Japan
| | - Rika Kosaki
- Division of Medical Genetics, National Center for Child Health and Development, Tokyo, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Medical Center and Research Institute for Maternal and Child Health, Osaka, Japan
| | - Keiko Shimojima
- Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan
| | - Toshiyuki Yamamoto
- Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan
| | - Yasutsugu Chinen
- Department of Pediatrics, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Seiji Mizuno
- Department of Pediatrics, Central Hospital, Aichi Human Service Center, Aichi, Japan
| | - Yuri Dowa
- Department of Pediatrics, Hyogo Prefectural Tsukaguchi Hospital, Hyogo, Japan
| | - Natsuko Shiomi
- Department of Pediatrics, Yodogawa Christian Hospital, Osaka, Japan
| | - Yoshihiro Toda
- Department of Pediatrics, Graduate School of Medical Sciences, Tokushima University, Tokushima, Japan
| | - Katsuya Tashiro
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Koichi Shichijo
- Department of Pediatrics, Tokushima Red Cross Hospital, Tokushima, Japan
| | | | - Seijiro Aso
- Department of Pediatrics, Japanese Red Cross Medical Center, Tokyo, Japan
| | - Kyoko Minagawa
- Department of Pediatrics, Hyogo College of Medicine, Hyogo, Japan
| | - Yoko Hiraki
- Hiroshima Municipal Center for Child Health and Development, Hiroshima, Japan
| | - Osamu Shimokawa
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tadashi Matsumoto
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Nagasaki, Japan
| | - Masafumi Fukuda
- Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Nagasaki, Japan
| | - Hiroyuki Moriuchi
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Koh-ichiro Yoshiura
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Tatsuro Kondoh
- Department of Pediatrics, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.,Misakaenosono Mutsumi Developmental, Medical, and Welfare Center, Nagasaki, Japan
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13
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Guilherme RS, Meloni VA, Perez ABA, Pilla AL, de Ramos MAP, Dantas AG, Takeno SS, Kulikowski LD, Melaragno MI. Duplication 9p and their implication to phenotype. BMC MEDICAL GENETICS 2014; 15:142. [PMID: 25526829 PMCID: PMC4411943 DOI: 10.1186/s12881-014-0142-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Accepted: 12/11/2014] [Indexed: 11/10/2022]
Abstract
Background Trisomy 9p is one of the most common partial trisomies found in newborns. We report the clinical features and cytogenomic findings in five patients with different chromosome rearrangements resulting in complete 9p duplication, three of them involving 9p centromere alterations. Methods The rearrangements in the patients were characterized by G-banding, SNP-array and fluorescent in situ hybridization (FISH) with different probes. Results Two patients presented de novo dicentric chromosomes: der(9;15)t(9;15)(p11.2;p13) and der(9;21)t(9;21)(p13.1;p13.1). One patient presented two concomitant rearranged chromosomes: a der(12)t(9;12)(q21.13;p13.33) and an psu i(9)(p10) which showed FISH centromeric signal smaller than in the normal chromosome 9. Besides the duplication 9p24.3p13.1, array revealed a 7.3 Mb deletion in 9q13q21.13 in this patient. The break in the psu i(9)(p10) probably occurred in the centromere resulting in a smaller centromere and with part of the 9q translocated to the distal 12p with the deletion 9q occurring during this rearrangement. Two patients, brother and sister, present 9p duplication concomitant to 18p deletion due to an inherited der(18)t(9;18)(p11.2;p11.31)mat. Conclusions The patients with trisomy 9p present a well-recognizable phenotype due to facial appearance, although the genotype-phenotype correlation can be difficult due to concomitant partial monosomy of other chromosomes. The chromosome 9 is rich in segmental duplication, especially in pericentromeric region, with high degree of sequence identity to sequences in 15p, 18p and 21p, chromosomes involved in our rearrangements. Thus, we suggest that chromosome 9 is prone to illegitimate recombination, either intrachromosomal or interchromosomal, which predisposes it to rearrangements, frequently involving pericentromeric regions.
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Affiliation(s)
- Roberta Santos Guilherme
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Vera Ayres Meloni
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Ana Beatriz Alvarez Perez
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Ana Luiza Pilla
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Marco Antonio Paula de Ramos
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Anelisa Gollo Dantas
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Sylvia Satomi Takeno
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
| | - Leslie Domenici Kulikowski
- Department of Pathology, Laboratório de Citogenômica, Universidade de São Paulo, Avenida Dr. Eneas Carvalho de Aguiar 647, CEP, 05403-000, São Paulo, Brazil.
| | - Maria Isabel Melaragno
- Department of Morphology and Genetics, Universidade Federal de São Paulo, Rua Botucatu 740, CEP, 04023-900, São Paulo, Brazil.
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14
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Cervantes A, García-Delgado C, Fernández-Ramírez F, Galaz-Montoya C, Morales-Jiménez AB, Nieto-Martínez K, Gómez-Laguna L, Villa-Morales J, Quintana-Palma M, Berúmen J, Kofman S, Morán-Barroso VF. Trisomy 1q41-qter and monosomy 3p26.3-pter in a family with a translocation (1;3): further delineation of the syndromes. BMC Med Genomics 2014; 7:55. [PMID: 25223409 PMCID: PMC4170088 DOI: 10.1186/1755-8794-7-55] [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: 12/02/2013] [Accepted: 09/10/2014] [Indexed: 11/16/2022] Open
Abstract
Background Trisomy 1q and monosomy 3p deriving from a t(1;3) is an infrequent event. The clinical characteristics of trisomy 1q41-qter have been described but there is not a delineation of the syndrome. The 3p25.3-pter monosomy syndrome (MIM 613792) characteristics include low birth weight, microcephaly, psychomotor and growth retardation and abnormal facies. Case presentation A 2 years 8 months Mexican mestizo male patient was evaluated due to a trisomy 1q and monosomy 3p derived from a familial t(1;3)(q41;q26.3). Four female carriers of the balanced translocation and one relative that may have been similarly affected as the proband were identified. The implicated chromosomal regions were defined by microarray analysis, the patient had a trisomy 1q41-qter of 30.3 Mb in extension comprising about 240 protein coding genes and a monosomy 3p26.3-pter of 1.7 Mb including only the genes CNTN6 (MIM 607220) and CHL1 (MIM 607416), which have been implicated in dendrite development. Their contribution to the phenotype, regarding the definition of trisomy 1q41-qter and monosomy 3p26.3-pter syndromes are discussed. Conclusion We propose that a trisomy 1q41-qter syndrome should be considered in particular when the following characteristics are present: postnatal growth delay, macrocephaly, wide fontanelle, triangular facies, frontal bossing, thick eye brows, down slanting palpebral fissures, hypertelorism, flat nasal bridge, hypoplasic nostrils, long filtrum, high palate, microretrognathia, ear abnormalities, neural abnormalities (in particular ventricular dilatation), psychomotor developmental delay and mental retardation. Our patient showed most of these clinical characteristics with exception of macrocephaly, possibly due to a compensatory effect by haploinsufficiency of the two genes lost from 3p. The identification of carriers has important implications for genetic counseling as the risk of a new born with either a der(3) or der(1) resulting from an adjacent-1 segregation is of 25% for each of them, as the products of adjacent-2 or 3:1 segregations are not expected to be viable.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Verónica F Morán-Barroso
- Departamento de Genética, Hospital Infantil de México Federico Gómez, Calle Dr, Márquez 162, Col, Doctores, Del, Cuauhtémoc, 06720 México, D,F,, México.
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15
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Meloni VA, Takeno SS, Pilla AL, de Mello CB, Melaragno MI, Kulikowski LD. Trisomy 1q32 and monosomy 11q25 associated with congenital heart defect: cytogenomic delineation and patient fourteen years follow-up. Mol Cytogenet 2014; 7:57. [PMID: 25184002 PMCID: PMC4151026 DOI: 10.1186/s13039-014-0057-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 08/04/2014] [Indexed: 01/06/2023] Open
Abstract
Background Partial duplication 1q is a rare cytogenetic anomaly frequently associated to deletion of another chromosome, making it difficult to define the precise contribution of the different specific chromosomal segments to the clinical phenotype. Case presentation We report a clinical and cytogenomic study of a patient with multiple congenital anomalies, heart defect, neuromotordevelopment delay, intellectual disability, who presents partial trisomy 1q32 and partial monosomy 11q25 inherited from a paternal balanced translocation identified by chromosome microarray and fluorescence in situ hybridization. Conclusion Compared to patients from the literature, the patient’s phenotype is more compatible to the 1q32 duplication’s clinical phenotype, although some clinical features may also be associated to the deleted segment on chromosome 11. This is the smallest 11q terminal deletion ever reported and the first association between 1q32.3 duplication and 11q25 deletion in the literature.
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Affiliation(s)
- Vera Ayres Meloni
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Sylvia Satomi Takeno
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Ana Luiza Pilla
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Claudia Berlim de Mello
- Children's Interdisciplinary Neuropsychological Center, AFIP, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Maria Isabel Melaragno
- Department of Morphology and Genetics, Universidade Federal de São Paulo, São Paulo, SP, Brazil
| | - Leslie Domenici Kulikowski
- Department of Pathology, Cytogenomics Lab, LIM 03, Universidade de São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 155, 2° andar, bloco 12, sala 7, São Paulo, SP, Brazil ; Human Reproduction and Genetics Center, Department of Collective Health, Faculdade de Medicina do ABC, Santo André, SP, Brazil
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16
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Moysés-Oliveira M, Mancini TI, Takeno SS, Rodrigues ADS, Bachega TASS, Bertola D, Melaragno MI. Congenital adrenal hyperplasia, ovarian failure and Ehlers-Danlos syndrome due to a 6p deletion. Sex Dev 2014; 8:139-45. [PMID: 24970489 DOI: 10.1159/000363779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/23/2014] [Indexed: 11/19/2022] Open
Abstract
Cryptic deletions in balanced de novo translocations represent a frequent cause of abnormal phenotypes, including Mendelian diseases. In this study, we describe a patient with multiple congenital abnormalities, such as late-onset congenital adrenal hyperplasia (CAH), primary ovarian failure and Ehlers-Danlos syndrome (EDS), who carries a de novo t(6;14)(p21;q32) translocation. Genomic array analysis identified a cryptic 1.1-Mb heterozygous deletion, adjacent to the breakpoint on chromosome 6, extending from 6p21.33 to 6p21.32 and affecting 85 genes, including CYP21A2,TNXB and MSH5. Multiplex ligation-dependent probe amplification analysis of the 6p21.3 region was performed in the patient and her family and revealed a 30-kb deletion in the patient's normal chromosome 6, inherited from her mother, resulting in homozygous loss of genes CYP21A1P and C4B. CYP21A2 sequencing showed that its promoter region was not affected by the 30-kb deletion, suggesting that the deletion of other regulatory sequences in the normal chromosome 6 caused a loss of function of the CYP21A2 gene. EDS and primary ovarian failure phenotypes could be explained by the loss of genes TNXB and MSH5, a finding that may contribute to the characterization of disease-causing genes. The detection of this de novo microdeletion drastically reduced the estimated recurrence risk for CAH in the family.
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Affiliation(s)
- Mariana Moysés-Oliveira
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, São Paulo, Brazil
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Akalin I, Bozdag S, Spielmann M, Basaran SY, Nanda I, Klopocki E. Partial trisomy 1q41-qter and partial trisomy 9pter-9q21.32 in a newborn infant: an array CGH analysis and review. Am J Med Genet A 2013; 164A:490-4. [PMID: 24311106 DOI: 10.1002/ajmg.a.36278] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 09/12/2013] [Indexed: 12/14/2022]
Abstract
We report on a girl who presented with distinctive abducted hip and hyperextended knee. Cytogenetic analysis detected an extra derivative chromosome resulting from a balanced translocation in the mother and 3:1 segregation. Using array comparative genomic hybridization (CGH) in combination with conventional high resolution GTG banding, we designate the karyotype as 47, XX, +der(9)t(1;9)(q41;q21.32)mat, indicating tertiary trisomy of chromosome segments 1q41-qter and 9pter-9q21.32. A review and genotype-phenotype correlation suggested that the patient represented most of the manifestations of duplication of chromosome arms 1q and 9p. To our knowledge, a similar case has so far not been reported.
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Affiliation(s)
- Ibrahim Akalin
- Department of Medical Genetics, Faculty of Medicine, İstanbul Medeniyet University, İstanbul, Turkey
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18
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Christofolini DM, Meloni VA, Ramos MADP, Oliveira MM, de Mello CB, Pellegrino R, Takeno SS, Melaragno MI. Autistic disorder phenotype associated to a complex 15q intrachromosomal rearrangement. Am J Med Genet B Neuropsychiatr Genet 2012; 159B:823-8. [PMID: 22911893 DOI: 10.1002/ajmg.b.32089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 07/11/2012] [Indexed: 01/21/2023]
Abstract
The proximal regions of acrocentric chromosomes, particularly 15q11.2, are frequently involved in structural rearrangement. However, interstitial duplications involving one of the chromosome 15 homologues are less frequent, with few patients described with molecular techniques. These patients present distinctive clinical findings including developmental delay and intellectual disability, minor dysmorphic facial features, epilepsy, and autistic behavior. Here we describe an interstitial rearrangement of chromosome 15 composed of a triplication -6.9 Mb from 15q11.2 to 15q13.2 followed by a duplication of -2.4 Mb from 15q13.2 to 15q13.3, defined using different approaches as MLPA, qPCR, array and FISH. FISH revealed that the middle part of the triplicated segment was in inverted position. The parental origin of the rearrangement was assessed using methylation assay and SNP array that revealed the maternal origin of the additional material. The patient presents most of the clinical features associated to 15q11.2 triplication: minor dysmorphic facial features, generalized epilepsy, absence seizures, intellectual disability, and autistic behavior. In conclusion, the use of more accurate molecular tools enabled a detailed investigation, providing the identification of intrachromosome duplication/triplication and bringing new light to the study of genetic causes of autistic disorders.
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Affiliation(s)
- Denise Maria Christofolini
- Genetics Division, Department of Gynecology and Obstetrics, Faculdade de Medicina do ABC (1) (FMABC), São Paulo, Brazil.
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Noronha Dutra AR, Mancini TI, Satomi Takeno S, Moysés Oliveira M, Kim CA, Alvarez Perez AB, Domenici Kulikowski L, Melaragno MI. Different conformation of two supernumerary 18p isochromosomes, one with a concomitant partial 18q trisomy. Cytogenet Genome Res 2012; 138:1-4. [PMID: 22796746 DOI: 10.1159/000339566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2012] [Indexed: 11/19/2022] Open
Abstract
The presence of a supernumerary 18p isochromosome is a rare chromosomal abnormality that results in 18p tetrasomy. This is a report on the clinical, cytogenetic and molecular findings of 2 non-related patients with a supernumerary 18p isochromosome. Both patients present some features of the 18p tetrasomy syndrome (strabismus, low-set ears, long and narrow fingers and toes), but additional characteristics were also observed. Cytogenetic analysis, FISH, MLPA and SNP array techniques showed that one of the isochromosomes is symmetric and monocentric, while the other is asymmetric and dicentric, yet resulting in a similar tetrasomy of the 18pter-18p10 region, followed by a partial 18q11.2 trisomy, an unprecedented finding in the literature.
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Affiliation(s)
- A R Noronha Dutra
- Disciplina de Genética, Departamento de Morfologia e Genética, Universidade de São Paulo, São Paulo, Brasil
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20
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Meloni VDFA, Piazzon FB, Soares MDFDF, Takeno SS, Christofolini DM, Kulikowski LD, Brunoni D, Melaragno MI. Cytogenomic characterization of an unexpected 17.6 Mb 9p deletion associated to a 14.8 Mb 20p duplication in a dysmorphic patient with multiple congenital anomalies presenting a normal G-banding karyotype. Gene 2012; 496:59-62. [PMID: 22285927 DOI: 10.1016/j.gene.2012.01.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 01/02/2012] [Accepted: 01/05/2012] [Indexed: 11/28/2022]
Abstract
We describe a female patient with developmental delay, dysmorphic features and multiple congenital anomalies who presented a normal G-banded karyotype at the 550-band resolution. Array and multiplex-ligation probe amplification (MLPA) techniques identified an unexpected large unbalanced genomic aberration: a 17.6Mb deletion of 9p associated to a 14.8 Mb duplication of 20p. The deleted 9p genes, especially CER1 and FREM1, seem to be more relevant to the phenotype than the duplicated 20p genes. This study also shows the relevance of using molecular techniques to make an accurate diagnosis in patients with dysmorphic features and multiple anomalies suggestive of chromosome aberration, even if on G-banding their karyotype appears to be normal. Fluorescence in situ hybridization (FISH) was necessary to identify a masked balanced translocation in the patient's mother, indicating the importance of associating cytogenetic and molecular techniques in clinical genetics, given the implications for patient management and genetic counseling.
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21
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Guilherme RS, de Freitas Ayres Meloni V, Sodré CP, Christofolini DM, Pellegrino R, de Mello CB, Conlin LK, Hutchinson AL, Spinner NB, Brunoni D, Kulikowski LD, Melaragno MI. Cytogenetic and molecular evaluation and 20-year follow-up of a patient with ring chromosome 14. Am J Med Genet A 2011; 152A:2865-9. [PMID: 20979193 DOI: 10.1002/ajmg.a.33689] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We present a 20-year follow-up on a patient with a ring chromosome 14. The ring chromosome was studied by fluorescence in-situ hybridization (FISH), multiplex-ligation probe amplification (MLPA), and genome wide SNP array, and no deletions of chromosome 14 were detected, although the telomeric repeat sequence was absent from the ring chromosome. The patient had skeletal abnormalities, and susceptibility to infections, as well as seizures and retinal pigmentation, which are commonly found in individuals with a ring 14. Our patient corroborates the idea that even when no genes are lost during ring formation, a complete ring chromosome can produce phenotypic alterations, which presumably result from ring instability or gene silencing due to the new chromosomal architecture.
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Balasubramanian M, Barber JCK, Collinson MN, Huang S, Maloney VK, Bunyan D, Foulds N. Inverted duplication of 1q32.1 to 1q44 characterized by array CGH and review of distal 1q partial trisomy. Am J Med Genet A 2009; 149A:793-7. [PMID: 19248177 DOI: 10.1002/ajmg.a.32463] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Meena Balasubramanian
- Wessex Clinical Genetics Service, Southampton University Hospitals Trust, Princess Anne Hospital, Southampton, UK.
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