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Lazarevic V, Lilljebjörn H, Olsson-Arvidsson L, Orsmark-Pietras C, Ågerstam H. TLE3 Is a Novel Fusion Partner of JAK2 in Myeloid/Lymphoid Neoplasm With Eosinophilia Responding to JAK2 Inhibition. Genes Chromosomes Cancer 2024; 63:e23261. [PMID: 39105620 DOI: 10.1002/gcc.23261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 07/18/2024] [Accepted: 07/18/2024] [Indexed: 08/07/2024] Open
Abstract
Chromosomal rearrangements involving Janus kinase 2 (JAK2) are rare but recurrent findings in lymphoid or myeloid neoplasia. Detection of JAK2 fusion genes is important as patients with aberrantly activated JAK2 may benefit from treatment with tyrosine kinase inhibitors such as ruxolitinib. Here, we report a novel fusion gene between the transcriptional co-repressor-encoding gene transducin-like enhancer of split 3 (TLE3) and JAK2 in a patient initially diagnosed with chronic eosinophilic leukemia with additional mutations in PTPN11 and NRAS. The patient was successfully treated with the JAK2 inhibitor ruxolitinib for 8 months before additional somatic mutations were acquired and the disease progressed into an acute lymphoblastic T-cell leukemia/lymphoma. The present case shows similarities to previously reported cases with PCM1::JAK2 and BCR::JAK2 with regard to disease phenotype and response to ruxolitinib, and importantly, provides an example that also patients harboring other JAK2 fusion genes may benefit from treatment with JAK2 inhibitors.
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Affiliation(s)
- Vladimir Lazarevic
- Department of Hematology, Oncology and Radiation Physics, Skåne University Hospital, Lund, Sweden
| | | | - Linda Olsson-Arvidsson
- Division of Clinical Genetics, Lund University, Lund, Sweden
- Department of Clinical Genetics, Pathology and Molecular Diagnostics, Office for Medical Services, Lund, Sweden
| | - Christina Orsmark-Pietras
- Division of Clinical Genetics, Lund University, Lund, Sweden
- Department of Clinical Genetics, Pathology and Molecular Diagnostics, Office for Medical Services, Lund, Sweden
| | - Helena Ågerstam
- Division of Clinical Genetics, Lund University, Lund, Sweden
- Department of Clinical Genetics, Pathology and Molecular Diagnostics, Office for Medical Services, Lund, Sweden
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2
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Zhang L, Shah B, Zhang Y, Tashkandi H, Xiao W, Fernandez-Pol S, Vergara-Lluri M, Hussaini M, Song J, Lancet J, Moscinski L, Yun S, Lu CM, Medeiros LJ, Tang G. Clinicopathologic characteristics, genetic features, and treatment options for acute lymphoblastic leukemia with JAK2 rearrangement-A 10-case study and literature review. Hum Pathol 2023; 136:1-15. [PMID: 36958463 DOI: 10.1016/j.humpath.2023.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/28/2023] [Accepted: 03/06/2023] [Indexed: 03/25/2023]
Abstract
JAK2 rearrangement (JAK2-R) in acute lymphoblastic leukemia (ALL) is rare and often categorized as B-ALL with BCR::ABL1-like features based on the World Health Organization classification. We report 10 patients with JAK2-R ALL, 9 males and 1 female, with a median age 40.5 years. Eight patients presented with marked leukocytosis (median WBC, 63 × 10 9/L) and hypercellular (>95%) bone marrow with increased lymphoblasts (72%-95%). There was no evidence of bone marrow fibrosis or hypereosinophilia. Immunophenotypic analysis showed 9 B-cell and 1 T-cell neoplasms. Using fluorescence in situ hybridization (FISH) and RNA sequencing analysis, JAK2 partners were identified for 7 cases and included PCM1 (n=4), ETV6 (n=2) and BCR (n=1). All patients received upfront polychemotherapy. Additionally, 2 patients received ruxolitinib, 2 received allogeneic stem cell transplant, and 1 received CAR-T therapy. The 1- and 3-year overall survival rates were 55.6% and 22.2%, respectively. A literature review identified 24 B-ALL and 4 T-ALL cases with JAK2-R reported, including 16 males, 6 females and 6 gender not stated. Many JAK2 partner-genes were reported with the most common being PAX5 (n=7), ETV6 (n=4), BCR (n=3) and PCM1 (n=2). Survival data or 13 reported cases showed 1- and 3-year overall survival rates of 41.7% and 41.7%, respectively. In summary, JAK2-R ALL occurs more often in adult males, are mostly of B-cell lineage, and associated with an aggressive clinical course. Absence of eosinophilia and bone marrow fibrosis and no evidence of preexisting/concurrent JAK2-R myeloid neoplasms distinguish JAK2-R ALL from other myeloid/lymphoid neoplasms with eosinophilia and JAK2-R.
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Affiliation(s)
- Ling Zhang
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Bijal Shah
- Department of Hematological Malignancy, H Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Yumeng Zhang
- Morsani College of Medicine, the University of South Florida and H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA.
| | - Hammad Tashkandi
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Wenbin Xiao
- Department of Pathology, Memorial Sloane Kettering Cancer Center, New York, New York, USA
| | | | - Maria Vergara-Lluri
- Department of Pathology, Hematopathology Section, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Mohammad Hussaini
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Jinming Song
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Jeffrey Lancet
- Department of Hematological Malignancy, H Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Lynn Moscinski
- Department of Hematopathology and Laboratory Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Seongseok Yun
- Department of Hematological Malignancy, H Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Chuanyi M Lu
- Department of Laboratory Medicine, University of California at San Francisco and San Francisco VA Health Care System, San Francisco, CA, USA
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center Houston, TX, USA
| | - Guilin Tang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center Houston, TX, USA
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3
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Stuver R, Moskowitz AJ. Therapeutic Advances in Relapsed and Refractory Peripheral T-Cell Lymphoma. Cancers (Basel) 2023; 15:cancers15030589. [PMID: 36765544 PMCID: PMC9913081 DOI: 10.3390/cancers15030589] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/06/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Historic outcomes for patients with relapsed or refractory nodal-based T-cell lymphomas are poor, with survival generally measured in months in multiple reports from the late 20th and early 21st century. Until recently, salvage strategies have mostly been borrowed from other aggressive lymphomas. However, dedicated investigations into the pathogenesis of T-cell lymphomas have resulted in an outpouring of therapies that target these diseases in biologically rational strategies. In particular, an evolving appreciation of the multiple complex oncogenic pathways and epigenetic changes that underlie these diseases has led to numerous agents targeting these aberrancies. Moreover, large reports of salvage allogeneic stem cell transplants in T-cell lymphoma have now been published, showing that adaptive immunotherapy is a potentially curative strategy for patients with relapsed or refractory disease. This review highlights therapeutic advances for relapsed or refractory T-cell lymphomas, including cellular therapy and allogeneic stem cell transplant, and provides a framework for management.
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4
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Fernandez-Pol S, Neishaboori N, Chapman CM, Khodadoust MS, Kim YH, Rieger KE, Suarez CJ. Two Cases of Mycosis Fungoides With PCM1-JAK2 Fusion. JCO Precis Oncol 2022; 5:646-652. [PMID: 34994608 DOI: 10.1200/po.20.00366] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | - Courtney M Chapman
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | | | - Youn H Kim
- Department of Dermatology, Stanford University School of Medicine, Stanford, CA
| | - Kerri E Rieger
- Department of Pathology, Stanford University School of Medicine, Stanford, CA.,Department of Dermatology, Stanford University School of Medicine, Stanford, CA
| | - Carlos J Suarez
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
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5
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Kaplan HG, Jin R, Bifulco CB, Scanlan JM, Corwin DR. OUP accepted manuscript. Oncologist 2022; 27:e661-e670. [PMID: 35472244 PMCID: PMC9355817 DOI: 10.1093/oncolo/oyac072] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 12/13/2021] [Indexed: 11/29/2022] Open
Abstract
Background This review summarizes the case studies of PCM1-JAK2 fusion tyrosine kinase gene-related neoplasia. Recommended treatment includes JAK2 inhibitors and hematologic stem cell transplantation (HSCT), although the small number of patients has limited study of their efficacy. Herein, we present all available cases in the current searchable literature with their demographics, diagnoses, treatments, and outcomes. Methods PubMed, ScienceDirect, Publons, the Cochrane Library, and Google were searched with the following terms: PCM1-JAK2, ruxolitinib and myeloid/lymphoid. Results Sixty-six patients (mean age = 50, 77% male) had an initial diagnosis of myeloproliferative neoplasm (MPN) in 40, acute leukemia in 21 and T-cell cutaneous lymphoma in 5. Thirty-five patients (53%) had completed 5-year follow-up. The 5-year survival for the MPN, acute myelogenous leukemia (AML), acute lymphocytic leukemia, and lymphoma groups are 62.7, 14.9%, 40.0%, and 100%, respectively. Too few patients have been treated with ruxolitinib to draw conclusions regarding its effect on survival while the 5-year survival for MPN patients with or without HSCT was 80.2% (40.3%-94.8%) versus 51.5% (22.3%-74.6%), respectively. The T-cell cutaneous lymphoma patients have all survived at least 7 years. Conclusion This rare condition may be increasingly detected with wider use of genomics. Ruxolitinib can yield hematologic and molecular remissions. However, HSCT is, at this time, the only potentially curative treatment. Useful prognostic markers are needed to determine appropriate timing for HSCT in patients with MPN. Patients presenting with acute leukemia have a poor prognosis.
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Affiliation(s)
- Henry G Kaplan
- Corresponding author: Henry G. Kaplan, MD, Swedish Cancer Institute, 1221 Madison St, Suite 920, Seattle, Washington 98104, USA. Tel: +1 206 310 4259.
| | - Ruyun Jin
- Center for Cardiovascular Analytics, Research and Data Science (CARDS), Providence Heart Institute, Providence Research Network, Portland, OR, USA
| | | | - James M Scanlan
- Swedish Center for Research and Innovation, Seattle, WA, USA
| | - David R Corwin
- CellNetix, Seattle, WA, USA
- Swedish Medical Center, Seattle, WA, USA
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6
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Abstract
Myeloproliferative neoplasms (MPNs) are clonal hematopoietic stem cell (HSC) disorders with overproduction of mature myeloid blood cells, including essential thrombocythemia (ET), polycythemia vera (PV), and primary myelofibrosis (PMF). In 2005, several groups identified a single gain-of-function point mutation JAK2V617F in the majority of MPN patients. The JAK2V617F mutation confers cytokine independent proliferation to hematopoietic progenitor cells by constitutively activating canonical and non-canonical downstream pathways. In this chapter, we focus on (1) the regulation of JAK2, (2) the molecular mechanisms used by JAK2V617F to induce MPNs, (3) the factors that are involved in the phenotypic diversity in MPNs, and (4) the effects of JAK2V617F on hematopoietic stem cells (HSCs). The discovery of the JAK2V617F mutation led to a comprehensive understanding of MPN; however, the question still remains about how one mutation can give rise to three distinct disease entities. Various mechanisms have been proposed, including JAK2V617F allele burden, differential STAT signaling, and host genetic modifiers. In vivo modeling of JAK2V617F has dramatically enhanced the understanding of the pathophysiology of the disease and provided the pre-clinical platform. Interestingly, most of these models do not show an increased hematopoietic stem cell self-renewal and function compared to wildtype controls, raising the question of whether JAK2V617F alone is sufficient to give a clonal advantage in MPN patients. In addition, the advent of modern sequencing technologies has led to a broader understanding of the mutational landscape and detailed JAK2V617F clonal architecture in MPN patients.
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7
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Sun Y, Cai Y, Chen J, Cen J, Zhu M, Pan J, Wu D, Sun A, Chen S. Diagnosis and Treatment of Myeloproliferative Neoplasms With PCM1-JAK2 Rearrangement: Case Report and Literature Review. Front Oncol 2021; 11:753842. [PMID: 34707996 PMCID: PMC8542851 DOI: 10.3389/fonc.2021.753842] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/22/2021] [Indexed: 02/03/2023] Open
Abstract
Myeloproliferative neoplasm (MPN) with PCM1-JAK2 rearrangement is a rare disease with poor prognosis and lacks uniform treatment guidelines. Several studies confirmed the efficacy of ruxolitinib in hematological malignancies with PCM1-JAK2 fusion, but the efficacy is variable. Here, we report two patients diagnosed with MPN with PCM1-JAK2 fusion who were treated with ruxolitinib-based regimen, including the first case of ruxolitinib combined with pegylated interferon (Peg-IFN), and we conduct a literature review. We found that ruxolitinib combined with Peg-IFN is an effective treatment option in the case of poor efficacy of ruxolitinib monotherapy.
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Affiliation(s)
- Yingxin Sun
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Yifeng Cai
- Department of Hematology, The Affiliated Hospital of Nantong University, Nantong University, Nantong, China
| | - Jia Chen
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Jiannong Cen
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Mingqing Zhu
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Jinlan Pan
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Depei Wu
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Aining Sun
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
| | - Suning Chen
- Department of Hematology, First Affiliated Hospital of Soochow University, National Clinical Research Center for Hematologic Diseases, Jiangsu Institute of Hematology, Soochow University, Suzhou, China.,Department of Thrombosis and Hemostasis, Key Laboratory of Thrombosis and Hemostasis of Ministry of Health, Suzhou, China
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8
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Drieux F, Ruminy P, Sater V, Marchand V, Fataccioli V, Lanic MD, Viennot M, Viailly PJ, Sako N, Robe C, Dupuy A, Vallois D, Veresezan L, Poullot E, Picquenot JM, Bossard C, Parrens M, Lemonnier F, Jardin F, de Leval L, Gaulard P. Detection of Gene Fusion Transcripts in Peripheral T-Cell Lymphoma Using a Multiplexed Targeted Sequencing Assay. J Mol Diagn 2021; 23:929-940. [PMID: 34147695 DOI: 10.1016/j.jmoldx.2021.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 04/19/2021] [Accepted: 04/28/2021] [Indexed: 10/21/2022] Open
Abstract
The genetic basis of peripheral T-cell lymphoma (PTCL) is complex and encompasses several recurrent fusion transcripts discovered over the past years by means of massive parallel sequencing. However, there is currently no affordable and rapid technology for their simultaneous detection in clinical samples. Herein, we developed a multiplex ligation-dependent RT-PCR-based assay, followed by high-throughput sequencing, to detect 33 known PTCL-associated fusion transcripts. Anaplastic lymphoma kinase (ALK) fusion transcripts were detected in 15 of 16 ALK-positive anaplastic large-cell lymphomas. The latter case was further characterized by a novel SATB1_ALK fusion transcript. Among 239 other PTCLs, representative of nine entities, non-ALK fusion transcripts were detected in 24 samples, mostly of follicular helper T-cell (TFH) derivation. The most frequent non-ALK fusion transcript was ICOS_CD28 in nine TFH-PTCLs, one PTCL not otherwise specified, and one adult T-cell leukemia/lymphoma, followed by VAV1 rearrangements with multiple partners (STAP2, THAP4, MYO1F, and CD28) in five samples (three PTCL not otherwise specified and two TFH-PTCLs). The other rearrangements were CTLA4_CD28 (one TFH-PTCL), ITK_SYK (two TFH-PTCLs), ITK_FER (one TFH-PTCL), IKZF2_ERBB4 (one TFH-PTCL and one adult T-cell leukemia/lymphoma), and TP63_TBL1XR1 (one ALK-negative anaplastic large-cell lymphoma). All fusions detected by our assay were validated by conventional RT-PCR and Sanger sequencing in 30 samples with adequate material. The simplicity and robustness of this targeted multiplex assay make it an attractive tool for the characterization of these heterogeneous diseases.
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Affiliation(s)
- Fanny Drieux
- INSERM U1245, Centre Henri Becquerel, Rouen, France; Pathology Department, Centre Henri Becquerel, Rouen, France; INSERM U955, Université Paris-Est, Créteil, France
| | | | | | | | - Virginie Fataccioli
- INSERM U955, Université Paris-Est, Créteil, France; Pathology Department, Groupe Hospitalier Henri Mondor, AP-HP, Créteil, France
| | | | | | | | - Nouhoum Sako
- INSERM U955, Université Paris-Est, Créteil, France
| | | | | | - David Vallois
- Institute of Pathology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | | | - Elsa Poullot
- INSERM U955, Université Paris-Est, Créteil, France; Pathology Department, Groupe Hospitalier Henri Mondor, AP-HP, Créteil, France
| | | | | | - Marie Parrens
- Pathology Department, Hôpital Haut-Lévêque, Bordeaux, France
| | - François Lemonnier
- INSERM U955, Université Paris-Est, Créteil, France; Hematology Department, Lymphoma Unit, Henri Mondor Hospital, Public Assistance Hospital of Paris, Créteil, France
| | | | - Laurence de Leval
- Institute of Pathology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Philippe Gaulard
- INSERM U955, Université Paris-Est, Créteil, France; Pathology Department, Groupe Hospitalier Henri Mondor, AP-HP, Créteil, France.
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9
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JAK2 Rearrangements Are a Recurrent Alteration in CD30+ Systemic T-Cell Lymphomas With Anaplastic Morphology. Am J Surg Pathol 2021; 45:895-904. [PMID: 34105517 DOI: 10.1097/pas.0000000000001708] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Peripheral T-cell lymphoma (PTCL) comprises a heterogenous group of rare mature T-cell neoplasms. While some PTCL subtypes are well-characterized by histology, immunophenotype, and recurrent molecular alterations, others remain incompletely defined. In particular, the distinction between CD30+ PTCL, not otherwise specified and anaplastic lymphoma kinase (ALK)-negative anaplastic large cell lymphoma can be subject to disagreement. We describe a series of 6 JAK2 rearrangements occurring in a cohort of 97 CD30+ ALK- PTCL (6%), assembled after identifying an index case of a novel PABPC1-JAK2 fusion in a case of ALK- anaplastic large cell lymphoma with unusual classic Hodgkin lymphoma (CHL)-like features. Fusions were identified using a comprehensive next-generation sequencing based assay performed between 2013 and 2020. Five of 6 cases (83%) showed JAK2 rearrangements with 4 novel partners: TFG, PABPC1, ILF3, and MAP7, and 1 case demonstrated a previously described PCM1-JAK2 fusion. By morphology, all cases showed anaplastic large cells and multinucleated Reed-Sternberg-like cells within a polymorphous inflammatory background with frequent eosinophilia reminiscent of CHL. By immunohistochemistry, atypical large cells expressed CD30 with coexpression of at least 1 T-cell marker, aberrant loss of at least 1 T-cell marker and, in 4 of 5 cases stained (80%), unusual CD15 coexpression. These findings suggest that a subset of CD30+ ALK- systemic PTCL with anaplastic morphology carry JAK2 rearrangements, some of which appear to show CHL-like morphologic features. The presence of JAK2 rearrangements in cases of CD30+ PTCL augments current classification and may provide a therapeutic target via JAK2 inhibition.
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10
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Quesada AE, Zhang Y, Ptashkin R, Ho C, Horwitz S, Benayed R, Dogan A, Arcila ME. Next generation sequencing of breast implant-associated anaplastic large cell lymphomas reveals a novel STAT3-JAK2 fusion among other activating genetic alterations within the JAK-STAT pathway. Breast J 2021; 27:314-321. [PMID: 33660353 DOI: 10.1111/tbj.14205] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 01/04/2021] [Accepted: 01/05/2021] [Indexed: 12/29/2022]
Abstract
Breast implant associated anaplastic large cell lymphoma (BIA-ALCL) is a distinct type of ALCL, and a new provisional entity by the 2016 revision of the World Health Organization (WHO) classification of tumors of hematopoietic and lymphoid tissues. In contrast to systemic and primary cutaneous ALCLs, BIA-ALCLs have been genetically characterized by the absence of fusions and frequent activation of the JAK-STAT3 pathway through mutations in JAK1 and STAT3. In this study, we report the results of the genetic profiling of 9 BIA-ALCL cases supporting the role of the JAK-STAT pathway activation in this entity, including the identification of an activating STAT3-JAK2 fusion similar to those recently reported in T-cell lymphoproliferative disorders of the gastrointestinal tract. To our knowledge, this is the first fusion reported in BIA-ALCL, providing further insight into the overall genetic landscape of this rare entity as well as uncovering potential options for targeted therapy in cases with advanced disease.
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Affiliation(s)
- Andrés E Quesada
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Yanming Zhang
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ryan Ptashkin
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Caleb Ho
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Steven Horwitz
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ryma Benayed
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ahmet Dogan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Maria E Arcila
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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11
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TBL1XR1-JAK2: a novel fusion in a pediatric T cell acute lymphoblastic leukemia patient with increased absolute eosinophil count. J Hematop 2020. [DOI: 10.1007/s12308-020-00413-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Schwaab J, Naumann N, Luebke J, Jawhar M, Somervaille TCP, Williams MS, Frewin R, Jost PJ, Lichtenegger FS, La Rosée P, Storch N, Haferlach T, Horny HP, Fabarius A, Haferlach C, Burchert A, Hofmann WK, Cross NCP, Hochhaus A, Reiter A, Metzgeroth G. Response to tyrosine kinase inhibitors in myeloid neoplasms associated with PCM1-JAK2, BCR-JAK2 and ETV6-ABL1 fusion genes. Am J Hematol 2020; 95:824-833. [PMID: 32279331 DOI: 10.1002/ajh.25825] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/03/2020] [Accepted: 04/05/2020] [Indexed: 12/16/2022]
Abstract
We report on 18 patients with myeloid neoplasms and associated tyrosine kinase (TK) fusion genes on treatment with the TK inhibitors (TKI) ruxolitinib (PCM1-JAK2, n = 8; BCR-JAK2, n = 1) and imatinib, nilotinib or dasatinib (ETV6-ABL1, n = 9). On ruxolitinib (median 24 months, range 2-36 months), a complete hematologic response (CHR) and complete cytogenetic response (CCR) was achieved by five of nine and two of nine patients, respectively. However, ruxolitinib was stopped in eight of nine patients because of primary resistance (n = 3), progression (n = 3) or planned allogeneic stem cell transplantation (allo SCT, n = 2). At a median of 36 months (range 4-78 months) from diagnosis, five of nine patients are alive: four of six patients after allo SCT and one patient who remains on ruxolitinib. In ETV6-ABL1 positive patients, a durable CHR was achieved by four of nine patients (imatinib with one of five, nilotinib with two of three, dasatinib with one of one). Because of inadequate efficacy (lack of hematological and/or cytogenetic/molecular response), six of nine patients (imatinib, n = 5; nilotinib, n = 1) were switched to nilotinib or dasatinib. At a median of 23 months (range 3-60 months) from diagnosis, five of nine patients are in CCR or complete molecular response (nilotinib, n = 2; dasatinib, n = 2; allo SCT, n = 1) while two of nine patients have died. We conclude that (a) responses on ruxolitinib may only be transient in the majority of JAK2 fusion gene positive patients with allo SCT being an important early treatment option, and (b) nilotinib or dasatinib may be more effective than imatinib to induce durable complete remissions in ETV6-ABL1 positive patients.
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Affiliation(s)
- Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Nicole Naumann
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Johannes Luebke
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Tim C P Somervaille
- Department of Haematology, The Christie NHS Foundation Trust, Manchester, UK
- Cancer Research UK Manchester Institute, Manchester, UK
| | - Mark S Williams
- Department of Haematology, The Christie NHS Foundation Trust, Manchester, UK
- Cancer Research UK Manchester Institute, Manchester, UK
| | - Rebecca Frewin
- Department of Pathology, Gloucester Royal Hospital, Gloucester, UK
| | - Philipp J Jost
- III. Medical Department, Hematology and Oncology, Klinikum rechts der Isar, Technical University Munich, Munchen, Bayern, Germany
| | | | - Paul La Rosée
- Klinik für Innere Medizin II, Schwarzwald-Baar-Klinikum, Villingen-Schwenningen, Germany
| | - Nicola Storch
- Department of Hematology and Oncology, St. Vincenz Medical Centre, Limburg, Germany
| | | | | | - Alice Fabarius
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | | | - Andreas Burchert
- Department of Hematology, Oncology and Immunology, Philipps University Marburg, and University Medical Center Giessen and Marburg, Marburg, Germany
| | - Wolf-Karsten Hofmann
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Nicholas C P Cross
- Faculty of Medicine, University of Southampton, Southampton, UK
- Wessex Regional Genetics Laboratory, Salisbury, UK
| | - Andreas Hochhaus
- Klinik für Innere Medizin II, Universitätsklinikum Jena, Jena, Germany
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Georgia Metzgeroth
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
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13
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Lee WY, Pfau RB, Choi SM, Yang J, Xiao H, Putnam EM, Ryan RJ, Bixby DL, Shao L. The diagnostic challenges and clinical course of a myeloid/lymphoid neoplasm with eosinophilia and ZBTB20-JAK2 gene fusion presenting as B-lymphoblastic leukemia. Cold Spring Harb Mol Case Stud 2020; 6:mcs.a004937. [PMID: 32238402 PMCID: PMC7133749 DOI: 10.1101/mcs.a004937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 02/03/2020] [Indexed: 12/03/2022] Open
Abstract
We report the diagnostic challenges and the clinical course of a patient with an extraordinary presentation of B-lymphoblastic leukemia (B-ALL) with eosinophilia. We identified a novel ZBTB20-JAK2 gene fusion as a chimeric RNA transcript using the Archer platform. This gene fusion from the same patient was recently identified by Peterson et al. (2019) at the genomic level using a different sequencing technology platform. The configuration of this gene fusion predicts the production of a kinase-activating JAK2 fusion protein, which would normally lead to a diagnosis of Philadelphia chromosome–like B-ALL (Ph-like B-ALL). However, the unusual presentation of eosinophilia led us to demonstrate the presence of this gene fusion in nonlymphoid hematopoietic cells by fluorescence in situ hybridization (FISH) studies with morphologic correlation. Therefore, we believe this disease, in fact, represents blast crisis arising from an underlying myeloid neoplasm with JAK2 rearrangements. This case illustrates the difficulty in differentiating Ph-like B-ALL and myeloid/lymphoid neoplasm with eosinophilia and gene rearrangements (MLN-EGR) in blast crisis. As currently defined, the diagnosis of MLN-EGR relies on the hematologic presentations and the identification of marker gene fusions (including PCM1-JAK2, ETV6-JAK2, and BCR-JAK2). However, these same gene fusions, when limited to B-lymphoblasts, also define Ph-like B-ALL. Yet, our case does not conform to either condition. Therefore, the assessment for lineage restriction of gene rearrangements to reflect the pathophysiologic difference between B-ALL and MLN-EGR in blast crisis is likely a more robust diagnostic approach and allows the inclusion of MLN-EGR with novel gene fusions.
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Affiliation(s)
- Winston Y Lee
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Ruthann B Pfau
- Institute of Genomic Medicine, Nationwide Children's Hospital and Department of Pathology, the Ohio State University, Columbus, Ohio 43205-2664, USA
| | - Sarah M Choi
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Jiong Yang
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Hong Xiao
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Eileen M Putnam
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Russell Jh Ryan
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Dale L Bixby
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
| | - Lina Shao
- Department of Pathology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan 48109-2800, USA
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14
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Levavi H, Tripodi J, Marcellino B, Mascarenhas J, Jones AV, Cross NCP, Gruenstein D, Najfeld V. A Novel t(1;9)(p36;p24.1) JAK2 Translocation and Review of the Literature. Acta Haematol 2019; 142:105-112. [PMID: 31063994 DOI: 10.1159/000498945] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 02/10/2019] [Indexed: 11/19/2022]
Abstract
The JAK2V617F point mutation has been implicated in the pathogenesis of the vast majority of myeloproliferative neoplasms (MPNs), but translocations involving JAK2 have increasingly been identified in patients with JAK2V617F-negativeMPNs. Here, we present a case of a patient diagnosed with JAK2V617F-negativepolycythemia vera (PV) that transformed to the MPN-blast phase. Cytogenetic and FISH analysis revealed a novel translocation of t(1;9)(p36;p24.1), causing a PEX14-JAK2 gene fusion product. The t(1;9)(p36;p24.1) represents a new addition to the list of known translocations involving JAK2that have been identified in hematologic malignancies. Although the prognostic and treatment implications of JAK2 translocations in MPNs have not been elucidated, positive outcomes have been described in case reports describing the use of JAK inhibitors in these patients. Further research into the role of JAK2 translocations in the pathogenesis and outcomes of hematologic malignancies is warranted.
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Affiliation(s)
- Hannah Levavi
- Departments of Medicine and Pathology, Tumor Cytogenomics, Icahn School of Medicine at Mount Sinai Hospital, New York, New York, USA
| | | | - Bridget Marcellino
- Departments of Medicine and Pathology, Tumor Cytogenomics, Icahn School of Medicine at Mount Sinai Hospital, New York, New York, USA
| | - John Mascarenhas
- Departments of Medicine and Pathology, Tumor Cytogenomics, Icahn School of Medicine at Mount Sinai Hospital, New York, New York, USA
| | - Amy V Jones
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Nicholas C P Cross
- Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Diana Gruenstein
- Departments of Medicine and Pathology, Tumor Cytogenomics, Icahn School of Medicine at Mount Sinai Hospital, New York, New York, USA
| | - Vesna Najfeld
- Departments of Medicine and Pathology, Tumor Cytogenomics, Icahn School of Medicine at Mount Sinai Hospital, New York, New York, USA,
- Tisch Cancer Institute, New York, New York, USA,
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15
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Miller JE, Metpally RP, Person TN, Krishnamurthy S, Dasari VR, Shivakumar M, Lavage DR, Cook AM, Carey DJ, Ritchie MD, Kim D, Gogoi R. Systematic characterization of germline variants from the DiscovEHR study endometrial carcinoma population. BMC Med Genomics 2019; 12:59. [PMID: 31053132 PMCID: PMC6499978 DOI: 10.1186/s12920-019-0504-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 04/15/2019] [Indexed: 02/02/2023] Open
Abstract
Background Endometrial cancer (EMCA) is the fifth most common cancer among women in the world. Identification of potentially pathogenic germline variants from individuals with EMCA will help characterize genetic features that underlie the disease and potentially predispose individuals to its pathogenesis. Methods The Geisinger Health System’s (GHS) DiscovEHR cohort includes exome sequencing on over 50,000 consenting patients, 297 of whom have evidence of an EMCA diagnosis in their electronic health record. Here, rare variants were annotated as potentially pathogenic. Results Eight genes were identified as having increased burden in the EMCA cohort relative to the non-cancer control cohort. None of the eight genes had an increased burden in the other hormone related cancer cohort from GHS, suggesting they can help characterize the underlying genetic variation that gives rise to EMCA. Comparing GHS to the cancer genome atlas (TCGA) EMCA germline data illustrated 34 genes with potentially pathogenic variation and eight unique potentially pathogenic variants that were present in both studies. Thus, similar germline variation among genes can be observed in unique EMCA cohorts and could help prioritize genes to investigate for future work. Conclusion In summary, this systematic characterization of potentially pathogenic germline variants describes the genetic underpinnings of EMCA through the use of data from a single hospital system. Electronic supplementary material The online version of this article (10.1186/s12920-019-0504-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jason E Miller
- Department of Genetics, Institute for Biomedical Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Raghu P Metpally
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, 17822, USA
| | - Thomas N Person
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, 17822, USA
| | | | | | - Manu Shivakumar
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, 17822, USA
| | - Daniel R Lavage
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, 17822, USA
| | - Adam M Cook
- Weis Center for Research, Geisinger Medical Center, Danville, PA, 17822, USA
| | - David J Carey
- Weis Center for Research, Geisinger Medical Center, Danville, PA, 17822, USA
| | - Marylyn D Ritchie
- Department of Genetics, Institute for Biomedical Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Dokyoon Kim
- Biomedical & Translational Informatics Institute, Geisinger Health System, Danville, PA, 17822, USA.,Huck Institute of the Life Sciences, Pennsylvania State University, University Park, PA, 16802, USA.,Department of Biostatistics, Epidemiology and Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, USA.,Institute for Biomedical Informatics, University of Pennsylvania, Philadelphia, USA
| | - Radhika Gogoi
- Weis Center for Research, Geisinger Medical Center, Danville, PA, 17822, USA.
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16
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Genetic alterations of 9p24 in lymphomas and their impact for cancer (immuno-)therapy. Virchows Arch 2018; 474:497-509. [DOI: 10.1007/s00428-018-2438-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/25/2018] [Accepted: 08/13/2018] [Indexed: 12/25/2022]
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17
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Sharma A, Oishi N, Boddicker RL, Hu G, Benson HK, Ketterling RP, Greipp PT, Knutson DL, Kloft-Nelson SM, He R, Eckloff BW, Jen J, Nair AA, Davila JI, Dasari S, Lazaridis KN, Bennani NN, Wu TT, Nowakowski GS, Murray JA, Feldman AL. Recurrent STAT3-JAK2 fusions in indolent T-cell lymphoproliferative disorder of the gastrointestinal tract. Blood 2018; 131:2262-2266. [PMID: 29592893 PMCID: PMC5958657 DOI: 10.1182/blood-2018-01-830968] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
| | - Naoki Oishi
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
- Department of Pathology, University of Yamanashi, Chuo, Yamanashi, Japan; and
| | | | - Guangzhen Hu
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Hailey K Benson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Rhett P Ketterling
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Patricia T Greipp
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Darlene L Knutson
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | - Rong He
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | - Jin Jen
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | | | | | | | | | | | - Tsung-Teh Wu
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Grzegorz S Nowakowski
- Center for Individualized Medicine, and
- Division of Hematology, Mayo Clinic, Rochester, MN
| | | | - Andrew L Feldman
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
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18
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Sun RF, Yu QQ, Young KH. Critically dysregulated signaling pathways and clinical utility of the pathway biomarkers in lymphoid malignancies. Chronic Dis Transl Med 2018; 4:29-44. [PMID: 29756121 PMCID: PMC5938286 DOI: 10.1016/j.cdtm.2018.02.001] [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: 01/01/2018] [Indexed: 12/15/2022] Open
Abstract
Accumulating evidence confirmed that many dysregulated signaling pathways and aberrant genetic alterations contribute to the oncogenesis and heterogeneity of lymphoid malignancies. Therapeutically targeting dysregulating signaling pathways and their hidden oncogenic biomarkers are becoming available, but did not show desired therapeutic effect in current clinical practice. It is meaningful to further understand the underlying mechanisms of the dysregulated signaling pathways and to address the potential utility of pathway-related biomarkers. To precisely identify the dysregulation of signaling pathways and the “driver” oncogenic biomarkers, as well as to develop reliable and reproducible risk-stratification based on biomarkers will be challenging. Nevertheless, pathway-based targeted therapy will raise the hope to improve the outcomes of the patients with lymphoid malignancies, especially with aggressive types, and the efficient utility of pathway-related biomarkers in diagnosis, prognosis, prediction of lymphoid malignancies may also be able to power precision medicine.
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Affiliation(s)
- Rui-Fang Sun
- Tumor Biobank, Department of Pathology, Shanxi Cancer Hospital, Taiyuan, Shanxi 030013, China
| | - Qian-Qian Yu
- Tumor Biobank, Department of Pathology, Shanxi Cancer Hospital, Taiyuan, Shanxi 030013, China
| | - Ken H Young
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77025, USA
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19
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Pizzi M, Margolskee E, Inghirami G. Pathogenesis of Peripheral T Cell Lymphoma. ANNUAL REVIEW OF PATHOLOGY-MECHANISMS OF DISEASE 2018; 13:293-320. [DOI: 10.1146/annurev-pathol-020117-043821] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Marco Pizzi
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, Cornell University, New York, NY 10021, USA
- Surgical Pathology and Cytopathology Unit, Department of Medicine-DIMED, University of Padova, 35121 Padova, Italy
| | - Elizabeth Margolskee
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, Cornell University, New York, NY 10021, USA
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College, Cornell University, New York, NY 10021, USA
- Department of Molecular Biotechnology and Health Science and Center for Experimental Research and Medical Studies (CeRMS), University of Torino, 10126 Torino, Italy
- Department of Pathology and NYU Cancer Center, NYU School of Medicine, New York, NY 10016, USA
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20
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Fusion of the genes ataxin 2 like, ATXN2L, and Janus kinase 2, JAK2, in cutaneous CD4 positive T-cell lymphoma. Oncotarget 2017; 8:103775-103784. [PMID: 29262599 PMCID: PMC5732765 DOI: 10.18632/oncotarget.21790] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 09/21/2017] [Indexed: 11/29/2022] Open
Abstract
Acquired mutations were recently described in cutaneous T-cell lymphomas for the JAK1, JAK3, STAT3, and STAT5B genes of the JAK-STAT pathway. In the present study, RNA-sequencing of a primary cutaneous CD4 positive T-cell lymphoma carrying a three-way t(9;13;16)(p24;q34;p11) chromosome translocation showed that JAK2 from chromosome band 9p24 was rearranged and fused to a novel partner gene, ATXN2L, from 16p11. RT-PCR together with Sanger sequencing verified the presence of the ATXN2L-JAK2 fusion transcript. The ATXN2L-JAK2 fusion gene would code for a chimeric protein containing all domains of ATXN2L and the catalytic domain of the JAK2 tyrosine kinase. The ATXN2L-JAK2 chimeric protein could lead to constitutive activation of the downstream JAK-STAT signaling pathway in a manner similar to that seen for other JAK2 fusion proteins.
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21
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Sun R, Wang J, Young KH. Oncogenic Signaling Pathways and Pathway-Based Therapeutic Biomarkers in Lymphoid Malignancies. Crit Rev Oncog 2017; 22:527-557. [PMID: 29604930 PMCID: PMC5961736 DOI: 10.1615/critrevoncog.2017020816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Lymphoma is characterized by heterogeneous biology, pathologic features, and clinical outcome. This has been proven by accumulating pathologic and molecular evidence attributed to underlying aberrant alterations at genetic, epigenetic, transcriptional, protein, microenvironmental levels, and dysregulated oncogenic signaling pathways. In the era of precision medicine, targeting oncogenic pathways to design drugs and to optimize treatment regimens for the lymphoma patients is feasible and clinically significant. As such, further understanding of the biology and the mechanisms behind lymphoma development and identification of oncogenic pathway activation and pathway-based biomarkers to better design precise therapies are challenging but hopeful. Furthermore, pathway-based targeted therapies in combination with traditional chemotherapy, single specific targeted antibody therapy, and immunotherapy might raise the hope for the patients with lymphoma, especially for relapsed and refractory lymphoma patients.
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Affiliation(s)
- Ruifang Sun
- Department of Pathology, Shanxi Cancer Hospital, Taiyuan, Shanxi, China
- Tumor Biobank, Shanxi Cancer Hospital, Taiyuan, Shanxi, China
| | - Jinfen Wang
- Department of Pathology, Shanxi Cancer Hospital, Taiyuan, Shanxi, China
| | - Ken H. Young
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
- Graduate School of Biomedical Sciences, The University of Texas Health Science Center, Houston, TX, USA
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22
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Zhang J, Zhu N, Du Y, Bai Q, Chen X, Nan J, Qin X, Zhang X, Hou J, Wang Q, Yang J. Dehydrocrenatidine is a novel janus kinase inhibitor. Mol Pharmacol 2015; 87:572-81. [PMID: 25583084 DOI: 10.1124/mol.114.095208] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Janus kinase (JAK) 2 plays a pivotal role in the tumorigenesis of signal transducers and activators of transcription (STAT) 3 constitutively activated solid tumors. JAK2 mutations are involved in the pathogenesis of various types of hematopoietic disorders, such as myeloproliferative disorders, polycythemia vera, essential thrombocythemia, and primary myelofibrosis. Thus, small-molecular inhibitors targeting JAK2 are potent for therapy of these diseases. In this study, we screened 1,062,608 drug-like molecules from the ZINC database and 2080 natural product chemicals. We identified a novel JAK family kinase inhibitor, dehydrocrenatidine, that inhibits JAK-STAT3-dependent DU145 and MDA-MB-468 cell survival and induces cell apoptosis. Dehydrocrenatidine represses constitutively activated JAK2 and STAT3, as well as interleukin-6-, interferon-α-, and interferon-γ-stimulated JAK activity, and STAT phosphorylation, and suppresses STAT3 and STAT1 downstream gene expression. Dehydrocrenatidine inhibits JAKs-JH1 domain overexpression-induced STAT3 and STAT1 phosphorylation. In addition, dehydrocrenatidine inhibits JAK2-JH1 kinase activity in vitro. Importantly, dehydrocrenatidine does not show significant effect on Src overexpression and epidermal growth factor-induced STAT3 activation. Our results indicate that dehydrocrenatidine is a JAK-specific inhibitor.
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Affiliation(s)
- Jing Zhang
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Ning Zhu
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Yuping Du
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Qifeng Bai
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Xing Chen
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jing Nan
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Xiaodong Qin
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Xinxin Zhang
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jianwen Hou
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Qin Wang
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jinbo Yang
- Schools of Life Sciences and Basic Medical Sciences, Lanzhou University, Lanzhou, China
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23
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Bain BJ, Ahmad S. Should myeloid and lymphoid neoplasms withPCM1-JAK2and other rearrangements ofJAK2be recognized as specific entities? Br J Haematol 2014; 166:809-17. [DOI: 10.1111/bjh.12963] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Barbara J. Bain
- Department of Haematology; St Mary's Hospital Campus of Imperial College London; St Mary's Hospital; London UK
| | - Shahzaib Ahmad
- Barts and the London School of Medicine and Dentistry; Queen Mary University of London; St Batholomew's Hospital; London UK
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24
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Chen X, Paranjape T, Stahlhut C, McVeigh T, Keane F, Nallur S, Miller N, Kerin M, Deng Y, Yao X, Zhao H, Weidhaas JB, Slack FJ. Targeted resequencing of the microRNAome and 3'UTRome reveals functional germline DNA variants with altered prevalence in epithelial ovarian cancer. Oncogene 2014; 34:2125-37. [PMID: 24909162 DOI: 10.1038/onc.2014.117] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 03/26/2014] [Indexed: 12/24/2022]
Abstract
Ovarian cancer is a major cause of cancer deaths, yet there have been few known genetic risk factors identified, the best known of which are disruptions in protein coding sequences (BRCA1 and 2). Recent findings indicate that there are powerful genetic markers of cancer risk outside of these regions, in the noncoding mRNA control regions. To identify additional cancer-associated, functional non-protein-coding sequence germline variants associated with ovarian cancer risk, we captured DNA regions corresponding to all validated human microRNAs and the 3' untranslated regions (UTRs) of ~6000 cancer-associated genes from 31 ovarian cancer patients. Multiple single-nucleotide polymorphisms in the 3'UTR of the vascular endothelial growth factor receptor/FLT1, E2F2 and PCM1 oncogenes were highly enriched in ovarian cancer patients compared with the 1000 Genome Project. Sequenom validation in a case-control study (267 cases and 89 controls) confirmed a novel variant in the PCM1 3'UTR is significantly associated with ovarian cancer (P=0.0086). This work identifies a potential new ovarian cancer locus and further confirms that cancer resequencing efforts should not ignore the study of noncoding regions of cancer patients.
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Affiliation(s)
- X Chen
- 1] Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA [2] Program in Computational Biology and Bioinformatics, Yale University School of Medicine, New Haven, CT, USA
| | - T Paranjape
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT, USA
| | - C Stahlhut
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
| | - T McVeigh
- Discipline of Surgery, National University of Ireland Galway and Galway University, Hospitals, Galway, Ireland
| | - F Keane
- Yale University School of Medicine, New Haven, CT, USA
| | - S Nallur
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT, USA
| | - N Miller
- Discipline of Surgery, National University of Ireland Galway and Galway University, Hospitals, Galway, Ireland
| | - M Kerin
- Discipline of Surgery, National University of Ireland Galway and Galway University, Hospitals, Galway, Ireland
| | - Y Deng
- Yale Center for Analytical Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - X Yao
- Yale Center for Analytical Sciences, Yale University School of Medicine, New Haven, CT, USA
| | - H Zhao
- 1] Program in Computational Biology and Bioinformatics, Yale University School of Medicine, New Haven, CT, USA [2] Department of Genetics, Yale University School of Medicine, New Haven, CT, USA [3] Department of Biostatistics, Yale School of Public Health, Yale University, New Haven, CT, USA
| | - J B Weidhaas
- Department of Therapeutic Radiology, Yale University School of Medicine, New Haven, CT, USA
| | - F J Slack
- Department of Molecular, Cellular and Developmental Biology, Yale University, New Haven, CT, USA
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25
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Yang YN, Qin YW, Wang C. JAK2 V617F detected in two B-cell chronic lymphocytic leukemia patients without coexisting Philadelphia chromosome-negative myeloproliferative neoplasms: A report of two cases. Oncol Lett 2014; 8:841-844. [PMID: 25013507 PMCID: PMC4081317 DOI: 10.3892/ol.2014.2168] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 05/13/2014] [Indexed: 11/17/2022] Open
Abstract
The JAK2 V617F mutation has been observed in patients with Philadelphia chromosome-negative myeloproliferative neoplasms (Ph-MPNs), including polycythemia vera, essential thrombocythemia and idiopathic myelofibrosis. This mutation has also been observed in a small number of other myeloid malignancies, such as acute myeloid leukemia, chronic myeloid leukemia and myelodysplastic syndrome. The JAK2 V617F allele has rarely been evaluated in lymphoproliferative disorders. In total, 28 JAK2 V617F-positive B-cell lymphocytic leukemia (B-CLL) patients have previously been reported and all presented with Ph-MPN concomitantly. However, following investigation of the JAK2 V617F mutation in 63 B-CLL patients at the Shanghai First People’s Hospital (Shanghai, China) between January 2008 and December 2012 via allele-specific polymerase chain reaction, two B-CLL patients without a history of Ph-MPN were identified to carry the JAK2 V617F allele.
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Affiliation(s)
- Yi-Ning Yang
- Department of Hematology, Shanghai First People's Hospital, Medical College, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - You-Wen Qin
- Department of Hematology, Shanghai First People's Hospital, Medical College, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Chun Wang
- Department of Hematology, Shanghai First People's Hospital, Medical College, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
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Salmoiraghi S, Montalvo MLG, D'Agostini E, Amicarelli G, Minnucci G, Spinelli O, Rambaldi A. Mutations and chromosomal rearrangements of JAK2: not only a myeloid issue. Expert Rev Hematol 2014; 6:429-39. [PMID: 23991929 DOI: 10.1586/17474086.2013.826910] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Until today, JAK2 alterations have been mainly associated with myeloid malignancies among which they play a key pathogenic role in chronic myeloproliferative neoplasms. More recently, aberrations involving the JAK2 gene have also been reported in lymphoid diseases, including acute leukemia and lymphomas. In addition, the constitutively activating JAK2V617F mutation has been identified in some patients affected by B-chronic lymphocytic leukemia with a concomitant myeloproliferative neoplasm. Interestingly, these cases could help us to better understand the pathogenesis of these myeloid and lymphoid diseases and reveal if they share a common ancestral progenitor or just coincide. The involvement of JAK2 in lymphoid neoplasms may suggest the possibility of new therapeutic approaches broadening the use of JAK1-2 inhibitors also to these malignancies.
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Affiliation(s)
- Silvia Salmoiraghi
- Hematology and Bone Marrow Transplant Unit of Azienda Ospedaliera Papa Giovanni XXIII, Piazza OMS 1, 24127 Bergamo, Italy
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Abstract
T-cell neoplasms include both mature T-cell leukemias and lymphomas and immature proliferations of precursor T cells. Molecular laboratories routinely assay suspected T-cell proliferations for evidence of clonality. In addition, some T-cell neoplasms are characterized by recurrent structural abnormalities that can be readily identified by such techniques as fluorescence in situ hybridization. New massively parallel sequencing technologies have led to the identification of numerous recurrent gene mutations in T-cell neoplasms. These findings are reviewed. As new technologies become implemented in molecular diagnostic laboratories and as targeted therapies are developed, it is anticipated that more extensive genomic characterization of T-cell neoplasms will be routinely performed in the future.
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Hopman S, Merks J, Eussen H, Douben H, Snijder S, Hennekam R, de Klein A, Caron H. Structural genome variations in individuals with childhood cancer and tumour predisposition syndromes. Eur J Cancer 2013; 49:2170-8. [DOI: 10.1016/j.ejca.2013.02.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Revised: 01/02/2013] [Accepted: 02/03/2013] [Indexed: 11/15/2022]
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Derenzini E, Younes A. Targeting the JAK-STAT pathway in lymphoma: a focus on pacritinib. Expert Opin Investig Drugs 2013; 22:775-85. [PMID: 23442043 DOI: 10.1517/13543784.2013.775244] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
INTRODUCTION The Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway mediates signaling by cytokine, chemokine and growth factor receptors on cell surface to the nucleus. JAK/STAT pathway is aberrantly activated in a variety of lymphomas, with a dual role of promoting cell survival/proliferation and immune evasion. AREAS COVERED This review describes the preclinical rationale behind the development of JAK inhibitors in lymphoma, some of which are being evaluated in Phase I/II studies, and summarizes the characteristics and clinical results of different JAK inhibitors in clinical development. Available preclinical and clinical data about JAK inhibition in lymphoid malignancies were reviewed using a PubMed access. To date, pacritinib (SB1518), a selective JAK2/FLT3 inhibitor is the first and only JAK inhibitor that has been evaluated in patients with relapsed lymphoma. EXPERT OPINION The preclinical rationale behind the development of pacritinib in lymphoproliferative neoplasms is strong, as the deregulation of the JAK/STAT pathway is involved in the pathogenesis of multiple lymphoma subtypes, although with different mechanisms. Pacritinib demonstrated safety and early clinical efficacy in a variety of lymphoma histologic types, providing the first proof of principle of the potential clinical value of targeting JAK/STAT pathway in lymphoma.
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Affiliation(s)
- Enrico Derenzini
- University of Bologna, Institute of Hematology and Medical Oncology L.A. Seragnoli, Via Massarenti 9, 40138 Bologna, Italy.
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Patterer V, Schnittger S, Kern W, Haferlach T, Haferlach C. Hematologic malignancies with PCM1-JAK2 gene fusion share characteristics with myeloid and lymphoid neoplasms with eosinophilia and abnormalities of PDGFRA, PDGFRB, and FGFR1. Ann Hematol 2013; 92:759-69. [DOI: 10.1007/s00277-013-1695-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 01/30/2013] [Indexed: 11/28/2022]
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Ehrentraut S, Nagel S, Scherr ME, Schneider B, Quentmeier H, Geffers R, Kaufmann M, Meyer C, Prochorec-Sobieszek M, Ketterling RP, Knudson RA, Feldman AL, Kadin ME, Drexler HG, MacLeod RAF. t(8;9)(p22;p24)/PCM1-JAK2 activates SOCS2 and SOCS3 via STAT5. PLoS One 2013; 8:e53767. [PMID: 23372669 PMCID: PMC3553112 DOI: 10.1371/journal.pone.0053767] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/04/2012] [Indexed: 12/03/2022] Open
Abstract
Fusions of the tyrosine kinase domain of JAK2 with multiple partners occur in leukemia/lymphoma where they reportedly promote JAK2-oligomerization and autonomous signalling, Affected entities are promising candidates for therapy with JAK2 signalling inhibitors. While JAK2-translocations occur in myeloid, B-cell and T-cell lymphoid neoplasms, our findings suggest their incidence among the last group is low. Here we describe the genomic, transcriptional and signalling characteristics of PCM1-JAK2 formed by t(8;9)(p22;p24) in a trio of cell lines established at indolent (MAC-1) and aggressive (MAC-2A/2B) phases of a cutaneous T-cell lymphoma (CTCL). To investigate signalling, PCM1-JAK2 was subjected to lentiviral knockdown which inhibited 7 top upregulated genes in t(8;9) cells, notably SOCS2/3. SOCS3, but not SOCS2, was also upregulated in a chronic eosinophilic leukemia bearing PCM1-JAK2, highlighting its role as a central signalling target of JAK2 translocation neoplasia. Conversely, expression of GATA3, a key T-cell developmental gene silenced in aggressive lymphoma cells, was partially restored by PCM1-JAK2 knockdown. Treatment with a selective JAK2 inhibitor (TG101348) to which MAC-1/2A/2B cells were conspicuously sensitive confirmed knockdown results and highlighted JAK2 as the active moiety. PCM1-JAK2 signalling required pSTAT5, supporting a general paradigm of STAT5 activation by JAK2 alterations in lymphoid malignancies. MAC-1/2A/2B - the first JAK2–translocation leukemia/lymphoma cell lines described - display conspicuous JAK/STAT signalling accompanied by T-cell developmental and autoimmune disease gene expression signatures, confirming their fitness as CTCL disease models. Our data support further investigation of SOCS2/3 as signalling effectors, prognostic indicators and potential therapeutic targets in cancers with JAK2 rearrangements.
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MESH Headings
- Cell Line, Tumor
- Chromosomes, Human, Pair 8
- Chromosomes, Human, Pair 9
- GATA3 Transcription Factor/genetics
- GATA3 Transcription Factor/metabolism
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Silencing
- Genetic Vectors
- Humans
- Lentivirus/genetics
- Lymphoma, T-Cell, Cutaneous/genetics
- Lymphoma, T-Cell, Cutaneous/metabolism
- Lymphoma, T-Cell, Cutaneous/pathology
- Oncogene Proteins, Fusion/antagonists & inhibitors
- Oncogene Proteins, Fusion/genetics
- Oncogene Proteins, Fusion/metabolism
- Protein Kinase Inhibitors/pharmacology
- Pyrrolidines/pharmacology
- STAT5 Transcription Factor/genetics
- STAT5 Transcription Factor/metabolism
- Signal Transduction/drug effects
- Skin Neoplasms/genetics
- Skin Neoplasms/metabolism
- Skin Neoplasms/pathology
- Sulfonamides/pharmacology
- Suppressor of Cytokine Signaling 3 Protein
- Suppressor of Cytokine Signaling Proteins/agonists
- Suppressor of Cytokine Signaling Proteins/genetics
- Suppressor of Cytokine Signaling Proteins/metabolism
- Translocation, Genetic
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Affiliation(s)
- Stefan Ehrentraut
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Stefan Nagel
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Michaela E. Scherr
- Department of Hematology, Hemostasis, Oncology, and Stem Cell Transplantation, Medical School Hannover, Hannover, Germany
| | - Björn Schneider
- University of Rostock, Institute of Pathology and Molecular Pathology, Rostock, Germany
| | - Hilmar Quentmeier
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Robert Geffers
- Department of Genome Analysis, HZI-Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Maren Kaufmann
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Corinna Meyer
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | | | - Rhett P. Ketterling
- College of Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Ryan A. Knudson
- College of Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Andrew L. Feldman
- College of Medicine, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, United States of America
| | - Marshall E. Kadin
- Boston University School of Medicine, Department of Dermatology and Skin Surgery, Roger Williams Medical Center, Providence, Rhode Island, United States of America
| | - Hans G. Drexler
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
| | - Roderick A. F. MacLeod
- Leibniz Institute, DSMZ - German Collection of Microorganisms and Cell Cultures, Department of Human and Animal Cell Cultures, Braunschweig, Germany
- * E-mail:
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Harry BL, Eckhardt SG, Jimeno A. JAK2 inhibition for the treatment of hematologic and solid malignancies. Expert Opin Investig Drugs 2012; 21:637-55. [DOI: 10.1517/13543784.2012.677432] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Brian L Harry
- University of Colorado School of Medicine, Medical Scientist Training Program, Aurora, CO 80045, USA
| | - S. Gail Eckhardt
- University of Colorado School of Medicine, Developmental Therapeutics Program, 12801 E. 17th Avenue, MS 8117, Aurora, CO 80045, USA ;
| | - Antonio Jimeno
- University of Colorado School of Medicine, Developmental Therapeutics Program, 12801 E. 17th Avenue, MS 8117, Aurora, CO 80045, USA ;
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Prochorec-Sobieszek M, Nasiłowska-Adamska B, Borg K, Kopeć I, Kos-Zakrzewska K, Juszczyński P, Warzocha K. Chronic eosinophilic leukemia with erythroblastic proliferation and the rare translocation t(8;9)(p22;p24) withPCM1–JAK2fusion gene: a distinct clinical, pathological and genetic entity with potential treatment target? Leuk Lymphoma 2012; 53:1824-7. [DOI: 10.3109/10428194.2012.661856] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Gnanasambandan K, Sayeski PP. A structure-function perspective of Jak2 mutations and implications for alternate drug design strategies: the road not taken. Curr Med Chem 2012; 18:4659-73. [PMID: 21864276 DOI: 10.2174/092986711797379267] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2011] [Revised: 08/19/2011] [Accepted: 08/22/2011] [Indexed: 01/13/2023]
Abstract
Jak2 is a non-receptor tyrosine kinase that is involved in the control of cellular growth and proliferation. Due to its significant role in hematopoiesis, Jak2 is a frequent target for mutations in cancer, especially myeloid leukemia, lymphoid leukemia and the myeloproliferative neoplasms (MPN). These mutations are common amongst different populations all over the world and there is a great deal of effort to develop therapeutic drugs for the affected patients. Jak2 mutations, whether they are point, deletion, or gene fusion, most commonly result in constitutive kinase activation. Here, we explore the structure-function relation of various Jak2 mutations identified in cancer and understand how they disrupt Jak2 regulation. Current Jak2 inhibitors target the highly conserved active site in the kinase domain and therefore, these inhibitors may lack specificity. Based on our knowledge regarding structure-function correlations as they pertain to regulation of Jak2 kinase activity, an alternative approach for specific Jak2 targeting could be via allosteric inhibitor design. Successful reports of allosteric inhibitors developed against other kinases provide precedent for the development of Jak2 allosteric inhibitors. Here, we suggest plausible target sites in the Jak2 structure for allosteric inhibition. Such targets include the type II inhibitor pocket and substrate binding site in the kinase domain, the kinase-pseudokinase domain interface, SH2-JH2 linker region and the FERM domain. Thus, future Jak2 inhibitors that target these sites via allosteric mechanisms may provide alternative therapeutic strategies to existing ATP competitive inhibitors.
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Affiliation(s)
- K Gnanasambandan
- Department of Physiology and Functional Genomics, University of Florida College of Medicine, Gainesville, USA
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Jatiani SS, Baker SJ, Silverman LR, Reddy EP. Jak/STAT pathways in cytokine signaling and myeloproliferative disorders: approaches for targeted therapies. Genes Cancer 2011; 1:979-93. [PMID: 21442038 DOI: 10.1177/1947601910397187] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Hematopoiesis is the cumulative result of intricately regulated signaling pathways that are mediated by cytokines and their receptors. Studies conducted over the past 10 to 15 years have revealed that hematopoietic cytokine receptor signaling is largely mediated by a family of tyrosine kinases termed Janus kinases (JAKs) and their downstream transcription factors, termed STATs (signal transducers and activators of transcription). Aberrations in these pathways, such as those caused by the recently identified JAK2(V617F) mutation and translocations of the JAK2 gene, are underlying causes of leukemias and other myeloproliferative disorders. This review discusses the role of JAK/STAT signaling in normal hematopoiesis as well as genetic abnormalities associated with myeloproliferative and myelodisplastic syndromes. This review also summarizes the status of several small molecule JAK2 inhibitors that are currently at various stages of clinical development. Several of these compounds appear to improve the quality of life of patients with myeloproliferative disorders by palliation of disease-related symptoms. However, to date, these agents do not seem to significantly affect bone marrow fibrosis, alter marrow histopathology, reverse cytopenias, reduce red cell transfusion requirements, or significantly reduce allele burden. These results suggest the possibility that additional mutational events might be associated with the development of these neoplasms, and indicate the need for combination therapies as the nature and significance of these additional molecular events is better understood.
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Affiliation(s)
- Shashidhar S Jatiani
- Department of Oncological Sciences, Mount Sinai School of Medicine, New York, NY, USA
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Walz C, Erben P, Ritter M, Bloor A, Metzgeroth G, Telford N, Haferlach C, Haferlach T, Gesk S, Score J, Hofmann WK, Hochhaus A, Cross NCP, Reiter A. Response of ETV6-FLT3-positive myeloid/lymphoid neoplasm with eosinophilia to inhibitors of FMS-like tyrosine kinase 3. Blood 2011; 118:2239-42. [PMID: 21705501 DOI: 10.1182/blood-2011-03-343426] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Imatinib-resistant tyrosine kinase (TK) fusions involving FGFR1, JAK2, or FLT3 are rare but recurrent in patients with eosinophilia-associated neoplasms. We report here 2 male patients with ETV6-FLT3(+) myeloid/lymphoid neoplasms with eosinophilia who were treated with the multitargeted TK inhibitors sunitinib and sorafenib. Patient 1 achieved rapid complete hematologic response and complete cytogenetic response after 3 months of taking sunitinib. A secondary blast phase caused by clonal evolution was diagnosed after 6 months. He achieved a second complete hematologic response after taking sorafenib but relapsed 2 months later. An N841K point mutation within the TK domain of FLT3, previously reported in acute myeloid leukemia and potentially conferring resistance to sorafenib, was subsequently identified. Patient 2 was heavily pretreated according to the initial diagnosis of T-lymphoblastic lymphoma and died in sunitinib-induced pancytopenia. This report highlights the importance of a careful diagnostic workup for eosinophilia-associated neoplasms to evaluate the possibility of TK inhibitor therapy.
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Affiliation(s)
- Christoph Walz
- Pathologisches Institut, Ludwig-Maximilians-Universität, München, Germany
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Dunlap J, Kelemen K, Leeborg N, Braziel R, Olson S, Press R, Huang J, Gatter K, Loriaux M, Fan G. Association of JAK2 mutation status and cytogenetic abnormalities in myeloproliferative neoplasms and myelodysplastic/myeloproliferative neoplasms. Am J Clin Pathol 2011; 135:709-19. [PMID: 21502425 DOI: 10.1309/ajcps6c8evycqnrm] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Myeloproliferative neoplasms and myelodysplastic/myeloproliferative neoplasms are heterogeneous disorders. JAK2 mutation testing and karyotyping are routinely used for diagnosis but have not been incorporated into risk stratification in Philadelphia chromosome-negative myeloproliferative neoplasms. This study correlated cytogenetic abnormalities with disease stage and JAK2 status. A total of 179 cases were analyzed for the JAK2 mutation. Among them, cytogenetic data were available for 97 cases-45 of 106 JAK2+ and 52 of 73 JAK2-. The JAK2+ group showed a higher frequency of cytogenetic anomalies than the JAK2- group (23/45 [51%] vs 14/52 [27%]). Chromosome 9, chromosome 7, and 20q- were recurrent abnormalities in the JAK2+ group, whereas 13q- and trisomy 21 were common in the JAK2- group. In the JAK2+ group, chromosome 7 and complex cytogenetic abnormalities were associated with excess blasts/blastic transformation (P < .05), whereas no cases with 20q- underwent blastic transformation. Our results suggest that incorporation of JAK2 mutation testing and karyotyping allows for monitoring of disease progression with prognostic and therapeutic implications.
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Krishna R, Byrne E, Burbridge J, Salooja N, Naresh KN. The Hammersmith hospital hematopathology case of the month: hemophagocytic lymphohistiocytosis secondary to Epstein–Barr virus associated T-cell lymphoma. Leuk Lymphoma 2011; 52:1127-32. [DOI: 10.3109/10428194.2011.563888] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Hoeller S, Walz C, Reiter A, Dirnhofer S, Tzankov A. PCM1–JAK2-fusion: a potential treatment target in myelodysplastic–myeloproliferative and other hemato-lymphoid neoplasms. Expert Opin Ther Targets 2010; 15:53-62. [DOI: 10.1517/14728222.2011.538683] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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41
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Dargent JL, Mathieux V, Vidrequin S, Deghorain X, Vannuffel P, Rack K. Pathology of the bone marrow and spleen in a case of myelodysplastic/myeloproliferative neoplasm associated with t(8;9)(p22;p24) involving PCM1 and JAK2 genes. Eur J Haematol 2010; 86:87-90. [DOI: 10.1111/j.1600-0609.2010.01525.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Patnaik MM, Knudson RA, Gangat N, Hanson CA, Pardanani A, Tefferi A, Ketterling RP. Chromosome 9p24 abnormalities: prevalence, description of novel JAK2 translocations, JAK2V617F mutation analysis and clinicopathologic correlates. Eur J Haematol 2010; 84:518-24. [DOI: 10.1111/j.1600-0609.2010.01428.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Haan C, Behrmann I, Haan S. Perspectives for the use of structural information and chemical genetics to develop inhibitors of Janus kinases. J Cell Mol Med 2010; 14:504-27. [PMID: 20132407 PMCID: PMC3823453 DOI: 10.1111/j.1582-4934.2010.01018.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Gain-of-function mutations in the genes encoding Janus kinases have been discovered in various haematologic diseases. Jaks are composed of a FERM domain, an SH2 domain, a pseudokinase domain and a kinase domain, and a complex interplay of the Jak domains is involved in regulation of catalytic activity and association to cytokine receptors. Most activating mutations are found in the pseudokinase domain. Here we present recently discovered mutations in the context of our structural models of the respective domains. We describe two structural hotspots in the pseudokinase domain of Jak2 that seem to be associated either to myeloproliferation or to lymphoblastic leukaemia, pointing at the involvement of distinct signalling complexes in these disease settings. The different domains of Jaks are discussed as potential drug targets. We present currently available inhibitors targeting Jaks and indicate structural differences in the kinase domains of the different Jaks that may be exploited in the development of specific inhibitors. Moreover, we discuss recent chemical genetic approaches which can be applied to Jaks to better understand the role of these kinases in their biological settings and as drug targets.
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Affiliation(s)
- Claude Haan
- Life Sciences Research Unit, University of Luxembourg, 162A, av. de la Faïencerie, 1511 Luxembourg, Luxembourg.
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Zhao WL. Targeted therapy in T-cell malignancies: dysregulation of the cellular signaling pathways. Leukemia 2009; 24:13-21. [PMID: 19865108 DOI: 10.1038/leu.2009.223] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
T-cell malignancies, mainly known as T-cell acute lymphoblastic leukemia (T-ALL) and T-cell non-Hodgkin's lymphoma (T-NHL), are aggressive tumors. Although the clinical outcome of the patients has improved dramatically with combination chemotherapy, significant challenges remain, including understanding of the factors that contribute to the malignant behavior of these tumor cells and developing subsequently optimal targeted therapy. Aberrant cell signal transduction is generally involved in tumor progression and drug resistance. This review describes the pathogenetic role of multiple cellular signaling pathways in T-cell malignancies and the potential therapeutic strategies based on the modulation of these key signaling networks.
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Affiliation(s)
- W-L Zhao
- State Key Laboratory of Medical Genomics, Shanghai Institute of Hematology, Shanghai Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Rui Jin Er Road, Shanghai 200025, China.
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Recurrent numerical aberrations of JAK2 and deregulation of the JAK2-STAT cascade in lymphomas. Mod Pathol 2009; 22:476-87. [PMID: 19136931 DOI: 10.1038/modpathol.2008.207] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The Janus kinase 2 (JAK2)-signal transducers and activators of transcription (STAT) pathway plays an important role in hematological malignancies. Mutations and translocations of the JAK2 gene, mapped at 9p24, lead to constitutive activation of JAK2 and its downstream targets. The presence of JAK2 mutations in lymphomas has been addressed in larger cohorts, but there are little systemic data on numerical and structural JAK2 aberrations in lymphoid neoplasms. To study the molecular epidemiology of these aberrations and the consecutive activation of the JAK2-STAT pathway in lymphomas, we examined 527 cases, covering the most common entities, in a tissue microarray by fluorescent in situ hybridization with breakable JAK2 probes, and immunohistochemistry for phosphorylated JAK2 (pJAK2) and its preferred downstream pSTAT3 and pSTAT5. 9p24 gains were detected in 6/17 (35%) primary mediastinal B-cell lymphomas (PMBCLs), 25/77 (33%) Hodgkin's lymphomas (HLs), 3/16 (19%) angioimmunoblastic T-cell lymphomas (AILTs) and 1/5 ALK1(+) anaplastic large cell lymphomas (ALCLs); breaks were observed only in three cases. pJAK2 expression was most prevalent in PMBCL, peripheral T-cell lymphomas and HL. pSTAT3 predominated in ALCLs, HLs, AILTs, PMBCLs and peripheral T-cell lymphomas. pSTAT5 expression was detected frequently in follicular lymphomas, diffuse large B-cell lymphomas and AILTs. 9p24 gains correlated with increased proportions of tumor cells expressing pJAK2 (P=0.002) and pSTAT3 (P=0.001). In follicular lymphomas, concomitant expression of pJAK2 and pSTAT5 was linked to better prognosis, whereas expression of pSTAT3 in nongerminal center-like diffuse large B-cell lymphomas could identify a patient group with an inferior outcome. Our findings stress that despite the rarity of activating JAK2 mutations in lymphomas, JAK2 is recurrently targeted by numerical, and rarely by structural, genetic aberrations in distinct lymphoma subtypes and that JAK2-STAT pathway may play a role in lymphomagenesis.
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Tefferi A, Levine RL, Kantarjian H. Oncogenic Signals as Treatment Targets in Classic Myeloproliferative Neoplasms. Biol Blood Marrow Transplant 2009; 15:114-9. [DOI: 10.1016/j.bbmt.2008.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Kundrapu K, Colenberg L, Duhé RJ. Activation loop tyrosines allow the JAK2(V617F) mutant to attain hyperactivation. Cell Biochem Biophys 2008; 52:103-12. [PMID: 18841497 DOI: 10.1007/s12013-008-9025-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A gain-of-function mutation (V617F) in the pseudokinase domain of JAK2 is frequently present in patients with myeloproliferative disorders such as polycythemia vera, essential thrombocythemia, and primary myelofibrosis. This mutation might serve as an important diagnostic biomarker for these uncommon diseases and may represent a target for novel therapy. It is imperative that a well-defined molecular mechanism be provided to account for the gain of function. This manuscript focuses on whether the V617F mutation is sufficient to cause constitutive activation of the enzyme. The evidence presented suggests that the V617F mutation would not cause constitutive activation because its hyperactivating effect is not observed when the mutation is combined with the YY1007,1008FF mutations. The phosphorylation of these two tyrosines within the activation loop is generally accepted as an essential step in the enzyme's normal transition from a basal state of activity to a fully active catalytic state following cytokine receptor stimulation. These observations are consistent with an interpretation that V617F-induced hyperactivation does not supersede the requirement for receptor-mediated activation, as others have shown by combining the V617F mutation with critical mutations in the enzyme's FERM domain. Thus, JAK2(V617F) should be considered as a hyperactive kinase rather than a constitutively active kinase.
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Affiliation(s)
- Kanakadurga Kundrapu
- Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson, MS 39216-4505, USA
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Poitras JL, Dal Cin P, Aster JC, Deangelo DJ, Morton CC. Novel SSBP2-JAK2 fusion gene resulting from a t(5;9)(q14.1;p24.1) in pre-B acute lymphocytic leukemia. Genes Chromosomes Cancer 2008; 47:884-9. [PMID: 18618714 DOI: 10.1002/gcc.20585] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Activating mutations in JAK2 are found in virtually all patients with polycythemia vera, and about half of those with essential thrombocythemia and primary myelofibrosis. In addition, less common aberrations (particularly gene fusions) involving JAK2 have been described in acute leukemias. With the advent of JAK2 inhibitor trials in myeloproliferative disorders, tumors with JAK2 mutations or rearrangements have become candidates for targeted therapy. In this report, we identify SSBP2 as a new JAK2 fusion partner in a patient with pre-B cell acute lymphocytic leukemia. This finding adds to the expanding compendium of JAK2 aberrations found in various hematopoietic malignancies, as well as the potential need for a diagnostic FISH analysis in the appropriate clinical setting.
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Affiliation(s)
- Jennifer L Poitras
- Department of Pathology, Brigham and Women's Hospital, Boston, MA 02115, USA
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Tefferi A. Molecular drug targets in myeloproliferative neoplasms: mutant ABL1, JAK2, MPL, KIT, PDGFRA, PDGFRB and FGFR1. J Cell Mol Med 2008; 13:215-37. [PMID: 19175693 PMCID: PMC3823350 DOI: 10.1111/j.1582-4934.2008.00559.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Therapeutically validated oncoproteins in myeloproliferative neoplasms (MPN) include BCR-ABL1 and rearranged PDGFR proteins. The latter are products of intra- (e.g. FIP1L1-PDGFRA) or inter-chromosomal (e.g.ETV6-PDGFRB) gene fusions. BCR-ABL1 is associated with chronic myelogenous leukaemia (CML) and mutant PDGFR with an MPN phenotype characterized by eosinophilia and in addition, in case of FIP1L1-PDGFRA, bone marrow mastocytosis. These genotype-phenotype associations have been effectively exploited in the development of highly accurate diagnostic assays and molecular targeted therapy. It is hoped that the same will happen in other MPN with specific genetic alterations: polycythemia vera (JAK2V617F and other JAK2 mutations), essential thrombocythemia (JAK2V617F and MPL515 mutations), primary myelofibrosis (JAK2V617F and MPL515 mutations), systemic mastocytosis (KITD816V and other KIT mutations) and stem cell leukaemia/lymphoma (ZNF198-FGFR1 and other FGFR1 fusion genes). The current review discusses the above-listed mutant molecules in the context of their value as drug targets.
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Affiliation(s)
- Ayalew Tefferi
- Division of Hematology, Mayo Clinic, Rochester, MN 55905, USA.
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50
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Five years since the discovery of FIP1L1–PDGFRA: what we have learned about the fusion and other molecularly defined eosinophilias. Leukemia 2008; 22:1999-2010. [DOI: 10.1038/leu.2008.287] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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