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Lapietra G, Limongi MZ, Buffolino S, Nanni M, Ballarò D, Martelli M, Mancini M. Late appearance of JAK2 mutated polycythaemia vera in a patient with typical chronic myeloid leukaemia on imatinib: Speculations about role of therapeutic pressure and of secondary genetic events. Leuk Res 2023; 126:107035. [PMID: 36773488 DOI: 10.1016/j.leukres.2023.107035] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 01/31/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023]
Affiliation(s)
- Gianfranco Lapietra
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Maria Zaira Limongi
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Sonia Buffolino
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Mauro Nanni
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Daniele Ballarò
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Maurizio Martelli
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy
| | - Marco Mancini
- Hematology, Department of Translational and Precision Medicine, Sapienza University, Rome, Italy.
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Kjeldsen E. A Novel Acquired t(2;4)(q36.1;q24) with a Concurrent Submicroscopic del(4)(q23q24) in An Adult with Polycythemia Vera. Cancers (Basel) 2018; 10:cancers10070214. [PMID: 29941837 PMCID: PMC6071118 DOI: 10.3390/cancers10070214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 06/21/2018] [Accepted: 06/21/2018] [Indexed: 12/27/2022] Open
Abstract
Background: Polycythemia vera (PV) is a clonal myeloid stem cell disease characterized by a growth-factor independent erythroid proliferation with an inherent tendency to transform into overt acute myeloid malignancy. Approximately 95% of the PV patients harbor the JAK2V617F mutation while less than 35% of the patients harbor cytogenetic abnormalities at the time of diagnosis. Methods and Results: Here we present a JAK2V617F positive PV patient where G-banding revealed an apparently balanced t(2;4)(q35;q21), which was confirmed by 24-color karyotyping. Oligonucleotide array-based Comparative Genomic Hybridization (aCGH) analysis revealed an interstitial 5.4 Mb large deletion at 4q23q24. Locus-specific fluorescent in situ hybridization (FISH) analyses confirmed the mono-allelic 4q deletion and that it was located on der(4)t(2;4). Additional locus-specific bacterial artificial chromosome (BAC) probes and mBanding refined the breakpoint on chromosome 2. With these methods the karyotype was revised to 46,XX,t(2;4)(q36.1;q24)[18]/46,XX[7]. Conclusions: This is the first report on a PV patient associated with an acquired novel t(2;4)(q36.1;q24) and a concurrent submicroscopic deletion del(4)(q23q24). The study also underscores the benefit of combined usage of FISH and oligo-based aCGH analysis in characterizing chromosomal abnormalities. The present findings provide additional clues to unravel important molecular pathways in PV to obtain the full spectrum of acquired chromosomal and genomic aberrations, which eventually may improve treatment options.
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Affiliation(s)
- Eigil Kjeldsen
- Cancer Cytogenetic Section, HemoDiagnostic Laboratory, Department of Hematology, Aarhus University Hospital, Tage-Hansens Gade 2, DK-8000 Aarhus C, Denmark.
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Mousinho F, Azevedo AP, Mendes T, Santos PSE, Cerqueira R, Matos S, Santos S, Ramos S, Viana JF, Lima F. Concomitant presence of JAK2V617F mutation and BCR‑ABL translocation in two patients: A new entity or a variant of myeloproliferative neoplasms (Case report). Mol Med Rep 2018; 18:1001-1006. [PMID: 29845291 DOI: 10.3892/mmr.2018.9032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Accepted: 02/22/2018] [Indexed: 11/06/2022] Open
Abstract
Myeloproliferative neoplasms (MPNs) are classically divided into BCR RhoGEF and GTPase activating protein (BCR)-ABL proto‑oncogene 1 non‑receptor tyrosine kinase (ABL) positive chronic myeloid leukemia (CML) and BCR‑ABL negative MPNs, including essential thrombocythemia (ET). One of the major diagnostic criteria for ET is the absence of the philadelphia chromosome, thus when present it is almost indicative of CML. ET and CML are considered to be mutually exclusive; however, there are rare situations in which patients with ET present positive BCR‑ABL without the features of CML. Although from the literature review, the frequency of JAK2V617F mutation and BCR‑ABL translocation coexistence in MPNs is low, it may be higher than expected. The current study reported cases of two patients with an initial diagnosis of ET in the presence of JAK2V617F mutation and BCR‑ABL translocation by fluorescent in situ hybridization. Both patients presented with a heterozygous BCR‑ABL translocation, and absence of p190 and p210 transcripts, seemingly a der(9) in the background of an ET JAK2V617F mutation.
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Affiliation(s)
- Filipa Mousinho
- Department of Clinical Hematology, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
| | - Ana P Azevedo
- Department of Clinical Pathology, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
| | - Tatiana Mendes
- Department of Clinical Hematology, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
| | - Paula Sousa E Santos
- Department of Clinical Hematology, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
| | | | - Sónia Matos
- GenoMed‑Molecular Medicine Diagnosis, Molecular Medicine Institute, Faculty of Medicine University of Lisbon, 1649‑028 Lisbon, Portugal
| | - Sónia Santos
- GenoMed‑Molecular Medicine Diagnosis, Molecular Medicine Institute, Faculty of Medicine University of Lisbon, 1649‑028 Lisbon, Portugal
| | - Sância Ramos
- Pathology Department, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
| | - João Faro Viana
- Department of Clinical Pathology, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
| | - Fernando Lima
- Department of Clinical Hematology, Hospital of São Francisco Xavier, West Lisbon Hospital Centre, 1449‑005 Lisbon, Portugal
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Translocation t(1;9) is a recurrent cytogenetic abnormality associated with progression of essential thrombocythemia patients displaying the JAK2 V617F mutation. Leuk Res 2011; 35:1188-92. [DOI: 10.1016/j.leukres.2011.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Revised: 01/12/2011] [Accepted: 02/02/2011] [Indexed: 11/21/2022]
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5
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Derivative (1;18)(q10;q10) in essential thrombocythemia. ACTA ACUST UNITED AC 2010; 199:62-4. [DOI: 10.1016/j.cancergencyto.2010.02.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Revised: 01/28/2010] [Accepted: 02/01/2010] [Indexed: 12/29/2022]
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Panani AD. A novel t(1;2)(p33;q33) in secondary postpolycythemic myelofibrosis. ACTA ACUST UNITED AC 2009; 195:201-2. [PMID: 19963128 DOI: 10.1016/j.cancergencyto.2009.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2009] [Accepted: 05/16/2009] [Indexed: 01/20/2023]
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Suh B, Park TS, Song J, Lee ST, Kim SJ, Lee HW, Choi JR. der(1)t(1;19)(p13;p13.1) in two elderly patients with myeloid neoplasms: New case reports and review of the literature. Leuk Res 2009; 33:e128-31. [DOI: 10.1016/j.leukres.2009.02.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 02/09/2009] [Accepted: 02/14/2009] [Indexed: 11/30/2022]
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Ohyashiki K, Kodama A, Ohyashiki JH. Recurrent der(9;18) in essential thrombocythemia with JAK2 V617F is highly linked to myelofibrosis development. ACTA ACUST UNITED AC 2008; 186:6-11. [PMID: 18786436 DOI: 10.1016/j.cancergencyto.2008.04.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2008] [Revised: 04/20/2008] [Accepted: 04/30/2008] [Indexed: 11/16/2022]
Abstract
We studied JAK2 mutational status, in combination with cytogenetic analysis in 54 patients with essential thrombocythemia (ET), and attempted to obtain greater insight into the correlation between clinicohematologic features and genetic abnormalities. We found that six ET patients developed myelofibrosis and four of them had JAK2 V617F mutation. It is noteworthy that three of the four ET patients with JAK2 V617F had add(18)(p11). In contrast, the remaining two ET patients who developed myelofibrosis had neither JAK2 V617F nor add(18)(p11). Moreover, none of the ET patients with JAK2 V617F and chromosome changes other than add(18)(p11) developed myelofibrosis. The current results indicate that add(18)(p11), possibly due to der(9;18), may contribute a link to myelofibrosis in JAK2 V617F-positive ET patients, while those with wild-type JAK2 may use another pathway toward myelofibrosis.
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Affiliation(s)
- Kazuma Ohyashiki
- First Department of Internal Medicine, Hematology Division, Tokyo Medical University, 6-7-1 Nishi-shinjuku, Shinjuku-ku, Tokyo, Japan.
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Reilly JT. Pathogenetic insight and prognostic information from standard and molecular cytogenetic studies in the BCR-ABL-negative myeloproliferative neoplasms (MPNs). Leukemia 2008; 22:1818-27. [DOI: 10.1038/leu.2008.218] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Bocchia M, Vannucchi AM, Gozzetti A, Guglielmelli P, Poli G, Crupi R, Defina M, Bosi A, Francesco L. Insights into JAK2-V617F mutation in CML. Lancet Oncol 2007; 8:864-6. [PMID: 17913657 DOI: 10.1016/s1470-2045(07)70295-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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