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Lee I, Gudipati MA, Waters E, Duong VH, Baer MR, Zou Y. Jumping translocations of chromosome 1q occurring by a multi-stage process in an acute myeloid leukemia progressed from myelodysplastic syndrome with a TET2 mutation. Mol Cytogenet 2019; 12:47. [PMID: 31827620 PMCID: PMC6862801 DOI: 10.1186/s13039-019-0460-2] [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: 10/15/2019] [Accepted: 11/01/2019] [Indexed: 11/17/2022] Open
Abstract
Background Jumping translocations (JTs) are rare chromosome rearrangements characterized by re-localization of one donor chromosome to multiple recipient chromosomes. Here, we describe an acute myeloid leukemia (AML) that progressed from myelodysplastic syndrome (MDS) in association with acquisition of 1q JTs. The sequence of molecular and cytogenetic changes in our patient may provide a mechanistic model for the generation of JTs in leukemia. Case presentation A 68-year-old man presented with pancytopenia. Bone marrow aspirate and biopsy showed a hypercellular marrow with multilineage dysplasia, consistent with MDS, with no increase in blasts. Karyotype and MDS fluorescence in situ hybridization (FISH) panel were normal. Repeat bone marrow aspirate and biopsy after 8 cycles of azacitidine, with persistent pancytopenia, showed no changes in morphology, and karyotype was again normal. Myeloid mutation panel showed mutations in RUNX1, SRSF2, ASXL1, and TET2. Three years after diagnosis, he developed AML with myelodysplasia-related changes. Karyotype was abnormal, with unbalanced 1q JTs to the short arms of acrocentric chromosomes 14 and 21, leading to gain of 1q. Conclusions Our patient had MDS with pathogenic mutations of the RUNX1, SRSF2, ASXL1, and TET2 genes and developed 1q JTs at the time of progression from MDS to AML. Our data suggest that the formation of 1q JTs involves multiple stages and may provide a mechanistic model for the generation of JTs in leukemia.
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Affiliation(s)
- Ina Lee
- 1Department of Pathology, University of Maryland School of Medicine, Baltimore, MD USA
| | - Mary A Gudipati
- 1Department of Pathology, University of Maryland School of Medicine, Baltimore, MD USA
| | - Elizabeth Waters
- 1Department of Pathology, University of Maryland School of Medicine, Baltimore, MD USA
| | - Vu H Duong
- 2Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA.,University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD USA
| | - Maria R Baer
- 2Department of Medicine, University of Maryland School of Medicine, Baltimore, MD USA.,University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD USA
| | - Ying Zou
- 1Department of Pathology, University of Maryland School of Medicine, Baltimore, MD USA.,University of Maryland Marlene and Stewart Greenebaum Comprehensive Cancer Center, Baltimore, MD USA.,4Department of Pathology, Johns Hopkins University, 1812 Ashland Ave., Suite 200, Room 221, Baltimore, MD 21205 USA
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2
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Behrens YL, Thomay K, Hagedorn M, Ebersold J, Schmidt G, Lentes J, Davenport C, Schlegelberger B, Göhring G. Jumping translocations: Short telomeres or pathogenic TP53 variants as underlying mechanism in acute myeloid leukemia and myelodysplastic syndrome? Genes Chromosomes Cancer 2019; 58:139-148. [PMID: 30614587 DOI: 10.1002/gcc.22665] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 11/08/2022] Open
Abstract
Chromosomal rearrangements involving one donor chromosome and two or more recipient chromosomes are called jumping translocations. To date only few cases of acute myeloid leukemia (AML) and myelodysplastic syndrome (MDS) with jumping translocations have been described and the underlying mechanisms remain unclear. Here, we analyzed 11 AML and 5 MDS cases with jumping translocations. The cases were analyzed by karyotyping, FISH, telomere length measurement, and next-generation sequencing with an AML/MDS gene panel. Cases with jumping translocations showed significantly (P < .01) shorter telomeres in comparison to healthy age-matched controls. Additional neo-telomeres were found in two cases. In total, eight cases showed recipient chromosomes with a breakpoint in the centromeric region all of them harboring a pathogenic variant in the TP53 gene (n = 6) and/or a loss of TP53 (n = 5). By contrast, no pathogenic variant or loss of TP53 was identified in the six cases showing recipient chromosomes with a breakpoint in the telomeric region. In conclusion, our results divide the cohort of AML and MDS cases with jumping translocations into two groups: the first group with a telomeric breakpoint of the recipient chromosome is characterized by short telomeres and a possibly telomere-based mechanism of chromosomal instability formation. The second group with a centromeric breakpoint of the recipient chromosome is defined by mutation and/or loss of TP53. We, therefore, assume that both critically short telomeres as well as pathogenic variants of TP53 influence jumping translocation formation.
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Affiliation(s)
| | - Kathrin Thomay
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Maike Hagedorn
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Juliane Ebersold
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Gunnar Schmidt
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Jana Lentes
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | - Claudia Davenport
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
| | | | - Gudrun Göhring
- Department of Human Genetics, Hannover Medical School, Hannover, Germany
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3
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Oh J, Symington LS. Role of the Mre11 Complex in Preserving Genome Integrity. Genes (Basel) 2018; 9:E589. [PMID: 30501098 PMCID: PMC6315862 DOI: 10.3390/genes9120589] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 11/26/2018] [Accepted: 11/27/2018] [Indexed: 12/12/2022] Open
Abstract
DNA double-strand breaks (DSBs) are hazardous lesions that threaten genome integrity and cell survival. The DNA damage response (DDR) safeguards the genome by sensing DSBs, halting cell cycle progression and promoting repair through either non-homologous end joining (NHEJ) or homologous recombination (HR). The Mre11-Rad50-Xrs2/Nbs1 (MRX/N) complex is central to the DDR through its structural, enzymatic, and signaling roles. The complex tethers DNA ends, activates the Tel1/ATM kinase, resolves protein-bound or hairpin-capped DNA ends, and maintains telomere homeostasis. In addition to its role at DSBs, MRX/N associates with unperturbed replication forks, as well as stalled replication forks, to ensure complete DNA synthesis and to prevent chromosome rearrangements. Here, we summarize the significant progress made in characterizing the MRX/N complex and its various activities in chromosome metabolism.
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Affiliation(s)
- Julyun Oh
- Biological Sciences Program, Columbia University, New York, NY 10027, USA.
- Department of Microbiology & Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA.
| | - Lorraine S Symington
- Department of Microbiology & Immunology, Columbia University Irving Medical Center, New York, NY 10032, USA.
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4
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Jumping Translocations of 1q in Myelodysplastic Syndrome and Acute Myeloid Leukemia: Report of Three Cases and Review of Literature. Case Rep Genet 2018; 2018:8296478. [PMID: 30271640 PMCID: PMC6151220 DOI: 10.1155/2018/8296478] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Accepted: 08/15/2018] [Indexed: 01/20/2023] Open
Abstract
Jumping translocations of 1q refer to the break-off of chromosome 1q as a donor fusing to two or more recipient chromosomes. We detected jumping translocations of 1q in three patients with initial diagnosis of myelodysplastic syndrome (MDS) and later progression to acute myeloid leukemia (AML). Review of literature found jumping translocations of 1q in 30 reported cases of MDS and AML. The cytogenetic findings from these 33 cases showed that seven cases had a stemline clone and 26 cases had de novo jumping translocations of 1q in which 5% of cell lineages had additional structural rearrangements. In 75% of cases, the 1q donor jumped to the short arm of recipient acrocentric chromosomes. Approximately 82% of the fusions occurred in the telomeric regions of short and long arms and 18% occurred in the pericentric or interstitial regions of recipient chromosomes. Hypomethylation of the donor 1q pericentromeric region and shortened telomeres in recipient chromosomes were associated with the formation of jumping translocations. Jumping translocations of 1q as an indication of chromosomal instability pose high risk for progression of MDS to AML and a poor prognosis. Further understanding of underlying genomic defects and their clinical significance will improve overall treatment and patient care.
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5
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Parihar M, Gupta A, Yadav AK, Mishra DK, Bhattacharyya A, Chandy M. Jumping translocation in a case of de novo infant acute myeloid leukemia. Pediatr Blood Cancer 2014; 61:387-9. [PMID: 24019227 DOI: 10.1002/pbc.24636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 05/07/2013] [Indexed: 11/09/2022]
Abstract
An infant presented with fever and purulent discharge from the left ear, proptosis of the right eye, and hepatosplenomegaly. She was diagnosed with acute monoblastic leukemia on morphological and flowcytometric analysis of the bone marrow. Karyotyping showed a jumping translocation (JT) involving the long arm of chromosome 1 as the sole cytogenetic abnormality in 29 metaphases. The patient died within 2 months of diagnosis. The presence of JT in a de novo infant AML as a sole cytogenetic abnormality indicates its possible role in leukemogenesis unlike previous reports that have implicated its role in tumor progression only.
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Affiliation(s)
- Mayur Parihar
- Department of Cytogenetics and Laboratory Hematology, Tata Medical Center, Kolkata, India
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Bessenyei B, Ujfalusi A, Balogh E, Olah E, Szegedi I, Kiss C. Jumping translocation of chromosome 1q associated with good clinical outcome in a case of Burkitt leukemia. Cancer Genet 2011; 204:207-10. [PMID: 21536239 DOI: 10.1016/j.cancergencyto.2010.10.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 09/02/2010] [Accepted: 10/27/2010] [Indexed: 11/29/2022]
Abstract
Acquired jumping translocations (JTs) are rare secondary aberrations occurring in various hematological malignancies. In Burkitt lymphoma/leukemia (BL) chromosome 1q abnormalities such as partial or whole arm duplications/translocations are frequently associated with the disease-specific t(8;14)(q24;q32). JTs of 1q are considered to have a bad prognostic impact in BL. We report clinical, conventional and molecular cytogenetic findings of a 12-year-old boy who presented with BL. In addition to the primary aberration, t(8;14)(q24;q32), JT of 1q onto chromosomes 21 and der(14) as well as the formation of isochromosome 1q could be detected in his bone marrow sample. Despite the expected poor prognostic outcome of these aberrations, the patient has been experiencing an event free survival of 7.5 years at the time of the present report, reflecting the excellent clinical outcome of the disease.
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Affiliation(s)
- Beata Bessenyei
- Clinical Genetic Center, Department of Pediatrics, University of Debrecen Medical and Health Science Center, Debrecen, Hungary.
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7
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McGrattan P, Logan A, Humphreys M, Bowers M. Jumping translocation in acute monocytic leukemia (M5b) with alternative breakpoint sites in the long arm of donor chromosome 3. Med Oncol 2009; 27:667-72. [DOI: 10.1007/s12032-009-9266-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2008] [Accepted: 07/03/2009] [Indexed: 11/30/2022]
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8
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Manola KN, Georgakakos VN, Stavropoulou C, Spyridonidis A, Angelopoulou MK, Vlachadami I, Katsigiannis A, Roussou P, Pantelias GE, Sambani C. Jumping translocations in hematological malignancies: a cytogenetic study of five cases. ACTA ACUST UNITED AC 2008; 187:85-94. [DOI: 10.1016/j.cancergencyto.2008.07.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 07/02/2008] [Accepted: 07/14/2008] [Indexed: 10/21/2022]
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9
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Unbalanced jumping translocation involving 3q in myeloproliferative disease. Med Oncol 2008; 26:251-5. [DOI: 10.1007/s12032-008-9074-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2008] [Accepted: 04/28/2008] [Indexed: 11/24/2022]
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10
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Abstract
Jumping translocations (JT) are uncommon constitutional or acquired chromosome rearrangements involving one donor and several recipient chromosomes. They occur in various pathologic conditions and the mechanism of their formation remains elusive. A review of the literature showed that the major localizations of the breakpoints of JTs in human samples are nonrandomly located in pericentromeric and telomeric regions of chromosomes. Interestingly, comparison of the localization of the chromosomal breakpoints and of presence of interstitial DNA repeats showed differences between constitutional and acquired JTs suggesting differences in the mechanisms for the genesis of JTs and their consequences.
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Affiliation(s)
- Roland Berger
- EMI 0210 INSERM, Hôpital Necker-Enfants Malades, Paris, France.
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11
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Bilic M, Quigley DI, Stuart RK, Wolff DJ. Jumping translocation of 1q in BCR/ABL-positive acute lymphoblastic leukemia. ACTA ACUST UNITED AC 2007; 172:90-1. [PMID: 17175389 DOI: 10.1016/j.cancergencyto.2006.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Onciu M, Schlette E, Zhou Y, Raimondi SC, Giles FJ, Kantarjian HM, Medeiros LJ, Ribeiro RC, Pui CH, Sandlund JT. Secondary chromosomal abnormalities predict outcome in pediatric and adult high-stage Burkitt lymphoma. Cancer 2006; 107:1084-92. [PMID: 16862570 DOI: 10.1002/cncr.22089] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
BACKGROUND Karyotypic abnormalities in sporadic Burkitt lymphoma (BL) have been described extensively. However, to the authors' knowledge, very limited studies have focused on the secondary chromosomal abnormalities in pediatric BL as compared with those of adult BL and on their prognostic impact. METHODS A retrospective analysis was performed in all pediatric and adult patients at 2 institutions, with a morphologic diagnosis of BL, pretherapy tumor karyotype available, and t(8;14), t(8;22), or t(2;8) present. RESULTS There were 33 children and 37 adults. The majority of the patients (95%) had Stage III/IV disease. There were no statistically significant differences noted in karyotype complexity and the nature of the chromosomal abnormalities between these 2 groups. Abnormalities of chromosomes 13 (13q) and 22 (22q) had a negative impact on prognosis in children. In adults, abnormalities of chromosome 17 appeared to have a negative impact. CONCLUSIONS The current findings suggest that karyotypic information can be used for refining risk stratification in patients with BL.
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Affiliation(s)
- Mihaela Onciu
- Department of Pathology, St. Jude Children's Hospital, Memphis, Tennessee 38105, USA
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13
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Specchia G, Albano F, Anelli L, Zagaria A, Liso A, Pannunzio A, Archidiacono N, Liso V, Rocchi M. Molecular cytogenetic study of instability at 1q21∼q32 in adult acute lymphoblastic leukemia. ACTA ACUST UNITED AC 2005; 156:54-8. [PMID: 15588856 DOI: 10.1016/j.cancergencyto.2004.04.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2004] [Revised: 04/06/2004] [Accepted: 04/09/2004] [Indexed: 11/29/2022]
Abstract
In the present paper, we report a molecular cytogenetic study of 1q abnormalities associated with t(8;14)(q24;q32) in an adult common B acute lymphoblastic leukemia case with FAB-L2 morphology. The use of appropriate molecular cytogenetic probes allowed us to detect 13 different subclones showing heterogeneous chromosome 1 abnormalities. A complex pattern of rearrangements consisting of translocations, duplications, and inversions was observed. Breakage-fusion-bridge cycle and jumping translocation are hypothesized to have been involved in generating the large number of aberrations we detected.
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14
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Sobol H, Benziane A, Kerangueven F, Yin L, Noguchi T, Pauly S, Eisinger F, Longy M, Romeo G, Lenoir G, Birnbaum D. Genome-wide search for loss of heterozygosity in Burkitt lymphoma cell lines. Genes Chromosomes Cancer 2002; 33:217-24. [PMID: 11793449 DOI: 10.1002/gcc.10022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The molecular biological characteristics of Burkitt lymphoma (BL), in addition to the presence of the Epstein-Barr virus (EBV) in some forms, relies on well-characterized alterations, such as MYC translocations and TP53 inactivations. To ascertain the number and location of other genome alterations, we used 191 polymorphic markers in a genome-wide search for loss of heterozygosity (LOH) in 31 Burkitt lymphoma cell lines and their normal counterparts. We were able to distinguish two types of altered allelic patterns: a bona fide LOH profile, indicative of deletion (LOH), and a profile indicative of increased dosage (ID). The former type was most frequent at chromosome arm 17p, most likely indicating TP53 gene inactivation. Increased dosage at 1q was found almost exclusively in non-EBV cell lines (P < 0.00004) and correlated well with karyotypic abnormalities affecting region 1q21-25. Our results suggest that a gene important for BL pathogenesis is located in region 1q21-25 and that the activation of this gene mimics the effects of EBV.
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Affiliation(s)
- Hagay Sobol
- EPI 9939 Inserm, Institut Paoli-Calmettes, IFR57, Université de la Méditerranée, Marseille, France
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Maekawa I, Satoh H, Aoki N, Morishita Y, Tsukamoto N, Karasawa M, Nonaka Y, Shiota M, Nojima Y, Mori S. Maintenance and characterization of an Epstein Barr virus-infected CD56-negative T cell lymphoma. Jpn J Cancer Res 2002; 93:61-9. [PMID: 11802809 PMCID: PMC5926862 DOI: 10.1111/j.1349-7006.2002.tb01201.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
T cell lymphoma carrying Epstein Barr virus (EBV(+) TL) is very rare among Western countries while it is much more common among Japanese. Here we report an EBV(+) TL which has been maintained for years by the use of mice with severe combined immune deficiency (SCID) mice. Lymphoma was obtained from a 55-year-old male suffering from oculomotor nerve palsy and lymphadenopathy. A small piece of biopsied tumor was transplanted into SCID mice and the lymphoma has been maintained for over 3 years with passages every 2 - 3 weeks. The maintained lymphoma, termed as TMS24, and the original lymphoma cells showed identical phenotype and genotype, including diffuse medium-sized cell morphology lacking granules, suppressor / cytotoxic immunophenotype and identical T cell receptor beta-chain gene rearrangement mode. Further, both were shown to carry an identical EBV clone in terms of the number of terminal repeats and the latency II-type restricted gene expression profile. Cytogenetically, TMS24 retained two characteristic chromosomal translocations of t(1;18)(q32;q21) and t(6;12)(p21;q24). Since only one cell line with such characters has been reported previously, TMS24 should be useful for detailed analysis of EBV(+) TL.
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Affiliation(s)
- Izuru Maekawa
- Division of Pathology, Institute of Medical Science, University of Tokyo, Minato-ku, Tokyo 108-8639, Japan.
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Levy B, Dunn TM, Hirschhorn K, Kardon N. Jumping translocations in spontaneous abortions. CYTOGENETICS AND CELL GENETICS 2000; 88:25-9. [PMID: 10773659 DOI: 10.1159/000015478] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chromosome translocations involving one donor chromosome and multiple recipient chromosomes have been referred to as jumping translocations (JTs). Acquired JTs are commonly observed in cancer patients, mainly involving chromosome 1. Constitutional forms of JTs mostly involve the acrocentric chromosomes and their satellites and have been reported in patients with clinical abnormalities. Recognizable phenotypes resulting from these events have included Down, Prader-Willi, and DiGeorge syndromes. The presence of JTs in spontaneous abortions has not been previously described. The breakpoints of all JTs occur in areas rich in repetitive DNA (telomeric, centromeric, and nucleolus organizing regions). We report two different unstable chromosome rearrangements in samples derived from spontaneous abortions. The first case involved a chromosome 15 donor. The recipient chromosomes were 1, 9, 15, and 21, and the respective breakpoints were in either the heterochromatic regions or the centromeres. FISH studies confirmed that the breakpoints of the jumping 15 rearrangement did not involve the Prader-Willi region but originated at the centromere or in the proximal short arm. A second case of instability was observed with a rearrangement resulting from a presumed de novo 8;21 translocation. Three JT cell lines were observed. They consisted of a deleted 8p chromosome, a dicentric 8;21 translocation, and an 8q isochromosome. The instability regions appeared to be at the pericentromeric region of chromosome 8 and the satellite region of chromosome 21. Both cases proved to be de novo events. The unstable nature of the JT resulting in chromosomal imbalance most likely contributed to the fetal loss. It appears that JT events may predispose to chromosomal imbalance via nondisjunction and chromosomal rearrangement and, therefore, may be an unrecognized cause of fetal loss.
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Affiliation(s)
- B Levy
- Department of Human Genetics, Mount Sinai School of Medicine, New York, NY 10029, USA.
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Fan YS, Rizkalla K, William BF, Engel CJ. Jumping translocations of 11q in acute myeloid leukemia and 1q in follicular lymphoma. CANCER GENETICS AND CYTOGENETICS 2000; 118:35-41. [PMID: 10731588 DOI: 10.1016/s0165-4608(99)00149-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Jumping translocation is a rare cytogenetic aberration in leukemia and lymphoma, and its etiologic mechanisms are not clearly known. We report two cases with jumping translocations. One had follicular lymphoma and jumping translocations of 1q onto the telomeric regions of 5p, 9p, and 15q in three cell lines, co-existing with the specific translocation t(14;18)(q32;q21). The second case had acute myeloid leukemia (AML) and jumping translocations of 11q as the sole aberration, onto multiple derivative chromosomes in each of the abnormal cells. A total of 17 telomeric regions were seen as the recipients of 11q in this case, and 9q was always involved as one of the recipients in all abnormal cells. Fluorescence in situ hybridization (FISH) confirmed the identification of 11q material in the derivative chromosomes. While 1q has been the most common donor of acquired jumping translocations, this is the first report on jumping translocations of 11q. Different from all previously reported jumping translocations which involve only one recipient in each cell line and lead to a mosaic trisomy, multiple recipients in most of the abnormal cells in this case had led to a tetrasomy, or a pentasomy of 11q. The pattern of chromosome involvement as the recipients of 11q appears to show a continuing evolutionary process of jumping, stabilization, and spreading of the donor material into other chromosomes. Somatic recombinations between the interstitial telomeric or subtelomeric sequences of a derivative chromosome and the telomeric sequences of normal chromosomes are believed to be the underlying mechanism of jumping translocations and their clonal evolution.
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Affiliation(s)
- Y S Fan
- Department of Pathology, The University of Western Ontario, Faculty of Medicine, London, Ontario, Canada
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Bernard M, Lemée F, Picard F, Ghandour C, Drenou B, Le Prise PY, Lamy T. Jumping translocation in acute leukemia of myelomonocytic lineage: a case report and review of the literature. Leukemia 2000; 14:119-22. [PMID: 10637486 DOI: 10.1038/sj.leu.2401637] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Jumping translocation (JT) is a very rare cytogenetic event, occurring especially in cancer. We describe a case of secondary acute monocytic leukemia (AML5b) with a JT involving the 3q13-3qter segment and leading to a partial trisomy 3. Each clone with JT was associated with trisomy 8 or tetrasomy 8. The literature of JT in AML cases is reviewed: only 13 cases of AML associated with JT have been previously described, seven of which are AML4/5 FAB subtype. Jumping translocation involvement in leukemogenesis is discussed. Leukemia (2000) 14, 119-122.
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Affiliation(s)
- M Bernard
- Service d'Hématologie Clinique, CHU de Rennes, France
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19
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Ma SK, Wan TS, Chan LC, Yip SF, Yeung YM. der(11)t(1;11)(q11;p15) as an additional cytogenetic abnormality in Ph+ adult acute lymphoblastic leukemia. CANCER GENETICS AND CYTOGENETICS 1999; 115:134-5. [PMID: 10598147 DOI: 10.1016/s0165-4608(99)00101-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Petković I, Konja J, Dominis M, Kastelan M. Jumping translocations involving 11q in a non-Hodgkin lymphoma. CANCER GENETICS AND CYTOGENETICS 1999; 114:121-5. [PMID: 10549268 DOI: 10.1016/s0165-4608(99)00056-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This paper presents the results of a cytogenetic analysis in an 11-year-old boy with non-Hodgkin lymphoma. The investigation was performed on slides obtained from short-term culture of lymph node cells. The analyses revealed an abnormal clone with loss of Y, gain of an X chromosome, t(3;22), trisomy 11, and three cytogenetically-related subclones with jumping translocations involving 11q13 as the common breakpoint region. This region is an unusual site of chromosome breakage in jumping translocations, and has not been reported thus far. Contrary to most published reports, the jumping translocation in our patient is associated with long survival.
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Affiliation(s)
- I Petković
- University Children's Hospital Zagreb, Croatia
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21
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Jarvis A, Sharma P, Watson N, Smith A. Two children with acute lymphoblastic leukemia and "jumping" translocations: both involve 1q23 as the donor breakpoint. CANCER GENETICS AND CYTOGENETICS 1999; 114:112-6. [PMID: 10549266 DOI: 10.1016/s0165-4608(99)00044-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
"Jumping" translocations (JT) are relatively rare and are associated with poor prognosis. We report two male patients with childhood acute lymphoblastic leukemia (ALL) and abnormal cell lines detected on bone marrow cytogenetics. Diagnostic marrow cytogenetics were not available for either patient. In patient 1, approximately 11 years after diagnosis, cytogenetics revealed a single translocation, t(1;2)(q23;q32), which was followed by translocations t(1;22)(q23;p11) and t(1;1)(q23;q21.3). In patient 2, two translocations were present together, t(1;6)(q23;p21.3) and t(1;11)(q23;q21), 12 years after diagnosis. The unbalanced JTs in both patients resulted in partial trisomy for (1)(q23-->qter). Both died within 1-2 years after the appearance of the JT. Our patients provide additional support for chromosome 1q preferential involvement in JTs, and that their appearance is associated with a poor prognosis.
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Affiliation(s)
- A Jarvis
- Department of Cytogenetics, New Children's Hospital, Sydney, Australia
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22
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Chen C, Kolodner RD. Gross chromosomal rearrangements in Saccharomyces cerevisiae replication and recombination defective mutants. Nat Genet 1999; 23:81-5. [PMID: 10471504 DOI: 10.1038/12687] [Citation(s) in RCA: 318] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cancer progression is often associated with the accumulation of gross chromosomal rearrangements (GCRs), such as translocations, deletion of a chromosome arm, interstitial deletions or inversions. In many instances, GCRs inactivate tumour-suppressor genes or generate novel fusion proteins that initiate carcinogenesis. The mechanism underlying GCR formation appears to involve interactions between DNA sequences of little or no homology. We previously demonstrated that mutations in the gene encoding the largest subunit of the Saccharomyces cerevisiae single-stranded DNA binding protein (RFA1) increase microhomology-mediated GCR formation. To further our understanding of GCR formation, we have developed a novel mutator assay in S. cerevisiae that allows specific detection of such events. In this assay, the rate of GCR formation was increased 600-5, 000-fold by mutations in RFA1, RAD27, MRE11, XRS2 and RAD50, but was minimally affected by mutations in RAD51, RAD54, RAD57, YKU70, YKU80, LIG4 and POL30. Genetic analysis of these mutants suggested that at least three distinct pathways can suppress GCRs: two that suppress microhomology-mediated GCRs (RFA1 and RAD27) and one that suppresses non-homology-mediated GCRs (RAD50/MRE11/XRS2).
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Affiliation(s)
- C Chen
- Ludwig Institute for Cancer Research, Cancer Center and Department of Medicine, University of California-San Diego School of Medicine, La Jolla, California 92093, USA
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23
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Reddy KS, Parsons L, Colman L. Jumping translocations involving chromosome 1q in a patient with Crohn disease and acute monocytic leukemia: a review of the literature on jumping translocations in hematological malignancies and Crohn disease. CANCER GENETICS AND CYTOGENETICS 1999; 109:144-9. [PMID: 10087950 DOI: 10.1016/s0165-4608(98)00162-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A 36-year-old man with a 10-year history of Crohn disease (CD) presented with gross hematuria and blasts in his peripheral blood. A chromosome analysis revealed one normal cell and 33 abnormal cells. The stem line was 47,XY,+8. The multiple side lines also had a jumping translocation between chromosome 1q31-32 and 4, 8, 10, 17, and 18 terminal regions. A cytogenetic, morphologic, and immunophenotypic analysis of a bone marrow aspirate and biopsy demonstrated acute myeloid leukemia of monocytic lineage, AML-M5b. In this paper are reviewed (a) the unusual and rare phenomenon of jumping translocations in hematological malignancies and (b) leukemia in CD.
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Affiliation(s)
- K S Reddy
- Quest Diagnostics Inc., San Juan Capistrano, CA 92690, USA
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24
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Batanian JR, Dunphy CH, Wall DA. Jumping translocations of 3q in acute promyelocytic leukemia. CANCER GENETICS AND CYTOGENETICS 1999; 108:149-53. [PMID: 9973944 DOI: 10.1016/s0165-4608(98)00134-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Jumping translocation is a rare phenomenon, seldom reported to occur in cancer. A complex four-way translocation involving chromosomes 3, 9, 15, and 17 was identified in the chromosome study on a patient with a history of an acute promyelocytic leukemia (APL). In the follow-up studies, the same complex rearrangement exhibited a jumping translocation between chromosomes 3 and 9 in one clone and 3 and 6 in another clone. This is the first reported case of jumping translocation in APL.
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MESH Headings
- Chromosome Banding
- Chromosomes, Human, Pair 15
- Chromosomes, Human, Pair 17
- Chromosomes, Human, Pair 3
- Chromosomes, Human, Pair 6
- Chromosomes, Human, Pair 9
- Female
- Humans
- In Situ Hybridization, Fluorescence
- Infant
- Karyotyping
- Leukemia, Promyelocytic, Acute/genetics
- Translocation, Genetic
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Affiliation(s)
- J R Batanian
- Department of Pediatrics, St. Louis University School of Medicine, MO 63104, USA
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25
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Rosenwald A, Ott G, Katzenberger T, Siebert R, Kalla J, Kuse R, Ott MM, Müller-Hermelink HK, Schlegelberger B. Jumping translocation of 1q as the sole aberration in a case of follicular lymphoma. CANCER GENETICS AND CYTOGENETICS 1999; 108:53-6. [PMID: 9973925 DOI: 10.1016/s0165-4608(98)00111-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cytogenetic and fluorescence in situ hybridization (FISH) studies in a case of follicular lymphoma grade III showed a "jumping translocation" of chromosome 1q21-qter to chromosomes Xq28 and 18q23, which resulted in a partial trisomy 1q as the only chromosome aberration. This case represents, to the best of our knowledge, the first report of a jumping translocation in a malignant lymphoma occurring as the sole aberration.
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Affiliation(s)
- A Rosenwald
- Institute of Pathology, University of Würzbrug, Germany
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26
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Keung YK, Yung C, Wong JW, Shah F, Cobos E, Tonk V. Unusual presentation of multiple myeloma with "jumping translocation" involving 1q21. A case report and review of the literature. CANCER GENETICS AND CYTOGENETICS 1998; 106:135-9. [PMID: 9797778 DOI: 10.1016/s0165-4608(97)00316-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
We describe a case of multiple myeloma with unusual manifestations consisting of cutaneous xanthomatosis, temporal arteritis, retinal vasculitis with a complex karyotype, and a "jumping translocation" involving 1q21. The literature of cytogenetic studies of multiple myeloma and of jumping translocation is reviewed.
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Affiliation(s)
- Y K Keung
- Division of Oncology/Hematology, Cytogenetic Laboratory, Texas Tech University Health Sciences Center, Lubbock, USA
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27
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Tanaka K, Kamada N. Segmental jumping translocation in leukemia and lymphoma with a highly complex karyotype. Leuk Lymphoma 1998; 29:563-75. [PMID: 9643570 DOI: 10.3109/10428199809050916] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
In order to identify the oncogene associated with malignant transformation 141 leukemia and malignant lymphoma patients were studied by FISH. Specific chromosome regions were translocated onto structurally abnormal chromosomes, resulting in partial tri-, tetra-, or pentasomy of these regions. We designated this type of chromosomal translocation as a "segmental jumping translocation (SJT)". These SJTs were found in several chromosomal regions such as 8q24, 9q34, 11q13, 11q23, 13q14, 14q24-q32, 21q22 and 22q11. The SJT at 9q34, which involved the ABL oncogene, was found in three of nine secondary leukemia patients who were treated with anticancer drugs and radiation. Non-Hodgkin's lymphoma and acute myeloid leukemia (AML) patients had 3-7 copies of SJT at 11q13 or 11q23. SJT at 14q32 and 21q22 were predominantly detected in the acute type of adult T-cell leukemia (8 of 27 patients) and in AML (5 of 17 patients). The size of the SJT regions varied among the patients. The overlapping region within the SJT could involve oncogene(s) associated with transformation to the advanced stage in leukemia and lymphoma patients. The SJT provides evidence of a new mechanism for gene amplification and formation of unidentified marker chromosomes in the advanced disease stage.
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MESH Headings
- Adult
- Chromosome Aberrations
- Chromosome Banding
- Crossing Over, Genetic
- DNA Probes
- DNA, Neoplasm/genetics
- Gene Amplification
- Genes, myc
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Leukemia/genetics
- Leukemia/pathology
- Leukemia, Radiation-Induced/etiology
- Leukemia, Radiation-Induced/genetics
- Leukemia, Radiation-Induced/pathology
- Leukemia-Lymphoma, Adult T-Cell/genetics
- Leukemia-Lymphoma, Adult T-Cell/pathology
- Lymphoma/genetics
- Lymphoma/pathology
- Neoplasm Proteins/biosynthesis
- Neoplasm Proteins/genetics
- Neoplasms, Second Primary/chemically induced
- Neoplasms, Second Primary/etiology
- Neoplasms, Second Primary/genetics
- Neoplasms, Second Primary/pathology
- Oncogenes
- Proto-Oncogene Proteins c-myc/biosynthesis
- Radiotherapy/adverse effects
- Translocation, Genetic
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Affiliation(s)
- K Tanaka
- Department of Cancer Cytogenetics, Research Institute for Radiation Biology and Medicine, Hiroshima University, Japan
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28
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Jumping Translocations of Chromosome 1q in Multiple Myeloma: Evidence for a Mechanism Involving Decondensation of Pericentromeric Heterochromatin. Blood 1998. [DOI: 10.1182/blood.v91.5.1732.1732_1732_1741] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Karyotypes in multiple myeloma (MM) are complex and exhibit numerous structural and numerical aberrations. The largest subset of structural chromosome anomalies in clinical specimens and cell lines involves aberrations of chromosome 1. Unbalanced translocations and duplications involving all or part of the whole long arm of chromosome 1 presumably occur as secondary aberrations and are associated with tumor progression and advanced disease. Unfortunately, cytogenetic evidence is scarce as to how these unstable whole-arm rearrangements may take place. We report nonrandom, unbalanced whole-arm translocations of 1q in the cytogenetic evolution of patients with aggressive MM. Whole-arm or “jumping translocations” of 1q were found in 36 of 158 successive patients with abnormal karyotypes. Recurring whole-arm translocations of 1q involved chromosomes 5,8,12,14,15,16,17,19,21, and 22. A newly delineated breakpoint present in three patients involved a whole-arm translocation of 1q to band 5q15. Three recurrent translocations of 1q10 to the short arms of different acrocentric chromosomes have also been identified, including three patients with der(15)t(1;15)(q10;p10) and two patients each with der(21)t(1;21)(q10;p13) and der(22)t(1;22) (q10;p10). Whole-arm translocations of 1q10 to telomeric regions of nonacrocentric chromosomes included der(12)t(1;12) (q10;q24.3) and der(19)t(1;19)(q10;q13.4) in three and two patients, respectively. Recurrent whole-arm translocations of 1q to centromeric regions included der(16)t(1;16)(q10;q10) and der(19)t(1;19)(q10;p10). The mechanisms involved in the 1q instability in MM may be associated with highly decondensed pericentromeric heterochromatin, which may permit recombination and formation of unstable translocations of chromosome 1q. The clonal evolution of cells with extra copies of 1q suggests that this aberration directly or indirectly provides a proliferative advantage.
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29
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Abstract
Abstract
The jumping translocation (JT) is a rare chromosomal abnormality in which a specific chromosomal segment translocates onto the ends of various chromosomes (jumps). In most cases, the region distal to 1q21 jumps onto numerous different telomeres. Here we report a molecular study of the JT involving 1q21 found in a patient with acute myelomonocytic leukemia that had transformed from myelodysplastic syndrome (MDS). This is the first report describing the analysis of the molecular structure of the JT. We demonstrated the presence of a stretch of telomeric repeats at the breakpoint by means of a fluorescence in situ hybridization experiment, molecular cloning, and nucleotide sequencing of the fused region. A significant amount of variant telomeric repeats (a telomeric sequence having one-base mismatch within the authentic telomeric repeat TTAGGG) was found in this region. The variant telomeric repeat has been shown to be present in the proximal region of telomeres and does not perform telomeric functions by itself. Therefore, these results indicated that the telomeres had already been critically shortened when the jumps occurred. We suggest that the extended proliferation of cancer cells during the premalignant stage, such as MDS, results in chromosomal instability due to the loss of telomeric functions.
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30
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Abstract
The jumping translocation (JT) is a rare chromosomal abnormality in which a specific chromosomal segment translocates onto the ends of various chromosomes (jumps). In most cases, the region distal to 1q21 jumps onto numerous different telomeres. Here we report a molecular study of the JT involving 1q21 found in a patient with acute myelomonocytic leukemia that had transformed from myelodysplastic syndrome (MDS). This is the first report describing the analysis of the molecular structure of the JT. We demonstrated the presence of a stretch of telomeric repeats at the breakpoint by means of a fluorescence in situ hybridization experiment, molecular cloning, and nucleotide sequencing of the fused region. A significant amount of variant telomeric repeats (a telomeric sequence having one-base mismatch within the authentic telomeric repeat TTAGGG) was found in this region. The variant telomeric repeat has been shown to be present in the proximal region of telomeres and does not perform telomeric functions by itself. Therefore, these results indicated that the telomeres had already been critically shortened when the jumps occurred. We suggest that the extended proliferation of cancer cells during the premalignant stage, such as MDS, results in chromosomal instability due to the loss of telomeric functions.
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31
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Jumping Translocations of Chromosome 1q in Multiple Myeloma: Evidence for a Mechanism Involving Decondensation of Pericentromeric Heterochromatin. Blood 1998. [DOI: 10.1182/blood.v91.5.1732] [Citation(s) in RCA: 163] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Karyotypes in multiple myeloma (MM) are complex and exhibit numerous structural and numerical aberrations. The largest subset of structural chromosome anomalies in clinical specimens and cell lines involves aberrations of chromosome 1. Unbalanced translocations and duplications involving all or part of the whole long arm of chromosome 1 presumably occur as secondary aberrations and are associated with tumor progression and advanced disease. Unfortunately, cytogenetic evidence is scarce as to how these unstable whole-arm rearrangements may take place. We report nonrandom, unbalanced whole-arm translocations of 1q in the cytogenetic evolution of patients with aggressive MM. Whole-arm or “jumping translocations” of 1q were found in 36 of 158 successive patients with abnormal karyotypes. Recurring whole-arm translocations of 1q involved chromosomes 5,8,12,14,15,16,17,19,21, and 22. A newly delineated breakpoint present in three patients involved a whole-arm translocation of 1q to band 5q15. Three recurrent translocations of 1q10 to the short arms of different acrocentric chromosomes have also been identified, including three patients with der(15)t(1;15)(q10;p10) and two patients each with der(21)t(1;21)(q10;p13) and der(22)t(1;22) (q10;p10). Whole-arm translocations of 1q10 to telomeric regions of nonacrocentric chromosomes included der(12)t(1;12) (q10;q24.3) and der(19)t(1;19)(q10;q13.4) in three and two patients, respectively. Recurrent whole-arm translocations of 1q to centromeric regions included der(16)t(1;16)(q10;q10) and der(19)t(1;19)(q10;p10). The mechanisms involved in the 1q instability in MM may be associated with highly decondensed pericentromeric heterochromatin, which may permit recombination and formation of unstable translocations of chromosome 1q. The clonal evolution of cells with extra copies of 1q suggests that this aberration directly or indirectly provides a proliferative advantage.
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32
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Johansson B, Brøndum-Nielsen K, Billström R, Schiødt I, Mitelman F. Translocations between the long arms of chromosomes 1 and 5 in hematologic malignancies are strongly associated with neoplasms of the myeloid lineages. CANCER GENETICS AND CYTOGENETICS 1997; 99:97-101. [PMID: 9398862 DOI: 10.1016/s0165-4608(97)00198-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The clinical, morphologic, and cytogenetic features of two hematologic malignancies--one acute myeloid leukemia with minimal differentiation (AML-MO) and one therapy-related myelodysplastic syndrome (MDS)--with unbalanced translocations between 1q and 5q are reported. The translocations resulted in loss of 5q material in both cases and gain of 1q in the MDS. A compilation of previously published hematologic malignancies with translocations involving the long arms of chromosomes 1 and 5 revealed a total of 23 cases--11 with unbalanced and 12 with balanced t(1;5)--with the following morphologies: 11 AML, three MDS, two Philadelphia-positive chronic myeloid leukemias, three chronic myeloproliferative disorders, three acute lymphoblastic leukemias, and one chronic lymphocytic leukemia. Four patients had received chemotherapy including alkylating agents for a previous malignancy and one had been exposed to thorotrast. Among the 14 patients for whom survival data exist, all except three have died. The t(1;5) was found as the sole abnormality in six cases, whereas it was apparently secondary--occurring in a subclone or together with the well-known primary abnormalities t(8;21), t(9;22), and t(15;17)--in nine cases. The breakpoints in 1q varied from 1q11 to 1q43, with a clustering to 1q21-23, and the 5q breaks occurred in 5q11 to 5q35, mainly in the distal 5q3 region. The unbalanced 1;5 translocations resulted in gain of 1q material in eight of the 11 cases, 1q21-1qter being duplicated in four of them, and in loss of 5q, most often the 5q3 region, in 10 of the neoplasms. We conclude that translocations between 1q and 5q, although cytogenetically heterogeneous, are associated with hematologic malignancies of the myeloid lineages and with previous mutagenic exposure, and that t(1;5) seems to confer a poor prognosis.
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Affiliation(s)
- B Johansson
- Department of Clinical Genetics, University Hospital, Lund, Sweden
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33
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Gray BA, Bent-Williams A, Wadsworth J, Maiese RL, Bhatia A, Zori RT. Fluorescence in situ hybridization assessment of the telomeric regions of jumping translocations in a case of aggressive B-cell non-Hodgkin lymphoma. CANCER GENETICS AND CYTOGENETICS 1997; 98:20-7. [PMID: 9309114 DOI: 10.1016/s0165-4608(96)00409-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We report a jumping translocation involving a donor chromosome 1 long arm in a case of aggressive B-cell non-Hodgkin lymphoma (NHL). Conventional cytogenetic banding studies demonstrated a breakpoint distal to the heterochromatic region of the donor 1q chromosome. Characterization by fluorescence in situ hybridization (FISH) of the jumping translocation demonstrated an apparent telomeric sequence loss of the recipient chromosomes. Additional cytogenetic aberrations, including the t(18;22) translocation associated with non-Hodgkin lymphoma, were also observed in this case. Cytogenetically similar cases of jumping translocations reported in the literature have implicated a preferential involvement of the donor chromosomes' heterochromatic regions and the telomeric regions of the recipient chromosomes. Jumping translocations are still considered rare and their appearance is associated with a poor prognosis. The presence of these specific findings for this case are discussed and compared with those previously reported in other hematologic disorders.
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Affiliation(s)
- B A Gray
- Department of Pediatrics, University of Florida College of Medicine, Gainesville 32610-0296, USA
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34
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Frequent Jumping Translocations of Chromosomal Segments Involving the ABL Oncogene Alone or in Combination With CD3-MLL Genes in Secondary Leukemias. Blood 1997. [DOI: 10.1182/blood.v89.2.596] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Seven secondary leukemia patients were treated for solid tumors or malignant lymphoma with anticancer drugs or radiation. We studied bone marrow samples from these patients by fluorescence in situ hybridization (FISH). Of the seven patients, three had increased signals for the ABL oncogene (9q34) on interphase nuclei and at metaphase. One of the three patients also had four signals for the CD3 (MLL) region (11q23). Whole painting probes revealed that these chromosomal regions were translocated onto structurally abnormal chromosomes, resulting in partial tri-, tetra- or penta-somy of these regions. We called this type of translocation “segmental jumping translocation (SJT).” SJT of the ABL oncogene was not detected in samples from 15 patients with de novo acute myelocytic leukemia (AML), 12 with myelodysplastic syndrome (MDS), or 20 with chronic myelocytic leukemia (CML) at the chronic phase. Furthermore, monosomy 7 was also found in the patients with the gene amplification. These results indicate that SJT of ABL and/or CD3 (MLL) genes is associated with the leukemogenesis of secondary leukemia. The SJT may be one mechanism of gene amplification.
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35
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von Ballestrem CL, Boavida MG, Zuther C, Carreiro MH, David D, Gal A, Schwinger E. Jumping translocation in a phenotypically normal female. Clin Genet 1996; 49:156-9. [PMID: 8737982 DOI: 10.1111/j.1399-0004.1996.tb03276.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
"Jumping translocation" jt refers to a rare type of chromosome mosaic, in which the same portion of a (donor) chromosome is translocated to different (recipient) chromosome sites. Jt have mainly been observed in lymphocyte cultures of patients with hematologic malignancies. We report a phenotypically normal female carrying a mosaic of two cell lines with the Xq26-qter segment translocated to the short arm of chromosomes 15 or 21 in peripheral blood lymphocytes. In skin fibroblasts, only the X/21 translocation was detected. We speculate that recombination between homologous repetitive sequences on non-homologous human acrocentrics may be the cause of such chromosomal rearrangements.
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36
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Sawyer JR, Swanson CM, Koller MA, North PE, Ross SW. Centromeric instability of chromosome 1 resulting in multibranched chromosomes, telomeric fusions, and "jumping translocations" of 1q in a human immunodeficiency virus-related non-Hodgkin's lymphoma. Cancer 1995; 76:1238-44. [PMID: 8630904 DOI: 10.1002/1097-0142(19951001)76:7<1238::aid-cncr2820760722>3.0.co;2-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Acquired immunodeficiency syndrome-related non-Hodgkin's lymphomas are associated with the B-cell chromosomal translocation t(8;14)(q24; q32). The most common secondary chromosome aberrations in these patients involve 1q and are believed to be associated with tumor progression. A mechanism for the origin of these 1q aberrations has not been demonstrated. To their knowledge, the authors report the first human immunodeficiency virus (HIV)-positive patient to have centromeric decondensation and multibranched chromosome aberrations of chromosomes 1 and 16 resulting in telomeric associations and "jumping translocations" of 1q. METHODS Tumor cells from peritoneal fluid of an HIV-positive patient were cultured for 24, 48, and 72 hours and analyzed by both conventional G-banding and fluorescence in situ hybridization. RESULTS G-band analysis showed a stemline with t(8;14)(q24;q32), but also showed the progression from centromeric decondensation to multibranched chromosome configurations of chromosomes 1 and 16. The interchange and duplications of chromosome arms resulted in the gain of extra copies of 1q material on a number of different chromosomes, but also the loss of 16q in at least one sideline and the formation of micronuclei. Fluorescence in situ hybridization analysis demonstrated that micronuclei predominantly involved chromosome 1 and, to a lesser extent, chromosome 16. CONCLUSIONS The cytogenetic findings in this unique case suggest that immunodeficiency may be a factor involved in centromeric instability, multibranching, and the progression to the subsequent formation of telomeric fusions and multiple unbalanced translocations of 1q (jumping translocations). The striking similarity of the centromeric instability in this patient to those with ICF syndrome (variable immunodeficiency, centromeric heterochromatin instability, and facial anomalies) suggests hypomethylation as the etiologic mechanism for the chromosome instability.
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MESH Headings
- Adult
- Centromere/genetics
- Chromosome Aberrations
- Chromosome Banding
- Chromosomes, Human, Pair 1
- Chromosomes, Human, Pair 16
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Lymphoma, AIDS-Related/genetics
- Lymphoma, AIDS-Related/pathology
- Lymphoma, Non-Hodgkin/genetics
- Lymphoma, Non-Hodgkin/pathology
- Male
- Micronuclei, Chromosome-Defective/genetics
- Micronuclei, Chromosome-Defective/pathology
- Telomere/genetics
- Translocation, Genetic
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Affiliation(s)
- J R Sawyer
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, USA
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