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Visani G, Etebari M, Fuligni F, Di Guardo A, Isidori A, Loscocco F, Paolini S, Navari M, Piccaluga PP. Use of Next Generation Sequencing to Define the Origin of Primary Myelofibrosis. Cancers (Basel) 2023; 15:cancers15061785. [PMID: 36980671 PMCID: PMC10046249 DOI: 10.3390/cancers15061785] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Primary myelofibrosis (PMF) is a chronic myeloproliferative neoplasm (MPN) characterized by progressive bone marrow sclerosis, extra-medullary hematopoiesis, and possible transformation to acute leukemia. In the last decade, the molecular pathogenesis of the disease has been largely uncovered. Particularly, genetic and genomic studies have provided evidence of deregulated oncogenes in PMF as well as in other MPNs. However, the mechanisms through which transformation to either the myeloid or lymphoid blastic phase remain obscure. Particularly, it is still debated whether the disease has origins in a multi-potent hematopoietic stem cells or instead in a commissioned myeloid progenitor. In this study, we aimed to shed light upon this issue by using next generation sequencing (NGS) to study both myeloid and lymphoid cells as well as matched non-neoplastic DNA of PMF patients. Whole exome sequencing revealed that most somatic mutations were the same between myeloid and lymphoid cells, such findings being confirmed by Sanger sequencing. Particularly, we found 126/146 SNVs to be the e same (including JAK2V617F), indicating that most genetic events likely to contribute to disease pathogenesis occurred in a non-commissioned precursor. In contrast, only 9/27 InDels were similar, suggesting that this type of lesion contributed instead to disease progression, occurring at more differentiated stages, or maybe just represented “passenger” lesions, not contributing at all to disease pathogenesis. In conclusion, we showed for the first time that genetic lesions characteristic of PMF occur at an early stage of hematopoietic stem cell differentiation, this being in line with the possible transformation of the disease in either myeloid or lymphoid acute leukemia.
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Affiliation(s)
- Giuseppe Visani
- Hematology and Stem Cell Transplantation, AORMIN, 61121 Pesaro, Italy
| | - Maryam Etebari
- Department of Medical Biotechnology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh 33787-95196, Iran
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh 33787-95196, Iran
- Department of Medical Science and Surgery (DIMEC), University of Bologna, 40126 Bologna, Italy
| | - Fabio Fuligni
- The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
| | - Antonio Di Guardo
- Department of Medical Science and Surgery (DIMEC), University of Bologna, 40126 Bologna, Italy
| | | | - Federica Loscocco
- Hematology and Stem Cell Transplantation, AORMIN, 61121 Pesaro, Italy
| | - Stefania Paolini
- Biobank of Research, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
| | - Mohsen Navari
- Department of Medical Biotechnology, School of Paramedical Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh 33787-95196, Iran
- Research Center of Advanced Technologies in Medicine, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh 33787-95196, Iran
- Bioinformatics Research Center, Mashhad University of Medical Sciences, Mashhad 91778-99191, Iran
| | - Pier Paolo Piccaluga
- Department of Medical Science and Surgery (DIMEC), University of Bologna, 40126 Bologna, Italy
- Biobank of Research, IRCCS Azienda Ospedaliero-Universitaria di Bologna, 40138 Bologna, Italy
- Correspondence: ; Tel.:+39-0512144043; Fax:+39-0512144037
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Ma J, Chen S, Huang Y, Zi J, Ma J, Ge Z. Philadelphia-positive acute lymphoblastic leukemia in a case of MPL p.(W515L) variant essential thrombocythemia: case report and literature review. Platelets 2021; 33:945-950. [PMID: 34895021 DOI: 10.1080/09537104.2021.2007871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Acute lymphoblastic leukemia (ALL) arising in preexisting myeloproliferative neoplasms (MPN) is rare with historical cases unable to differentiate between concomitant malignancies or leukemic transformation. Here, we report a case of patient with Philadelphia positive B lymphoblastic leukemia (Ph+ALL) who developed from MPL-mutated essential thrombocythemia (ET) 13 years after initial presentation. Molecular studies showed the discrepancy between the high percentage of lymphocyte blasts (91%) and the low MPL p.(W515L) variant allele frequency (2.59%) at diagnosis in the bone marrow, indicating that the Ph+ALL clone did not originate from the ET clone carrying the MPL p.(W515L) variant. After the treatment of a new tyrosine kinase inhibitor flumatinib and prednisolone, cytogenetic and molecular remission had been achieved rapidly and followed by the recovery of original ET manifestation. Although relapsed eventually, this is still a very rare case of simultaneous presence of two cytogenetics abnormalities and evolution of MPL p.(W515L) variant ET to Ph+ALL and may provide evidence to illustrate the clonal relationship of MPN and post-MPN ALL.
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Affiliation(s)
- Jiale Ma
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing, China.,Department of Hematology, Xuzhou Central Hospital, Xuzhou, China
| | - Shan Chen
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing, China
| | - Yanqing Huang
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing, China
| | - Jie Zi
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing, China
| | - Jinlong Ma
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing, China
| | - Zheng Ge
- Department of Hematology, Zhongda Hospital, Medical School of Southeast University, Institute of Hematology Southeast University, Nanjing, China
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How I treat the blast phase of Philadelphia chromosome–negative myeloproliferative neoplasms. Blood 2018; 132:2339-2350. [DOI: 10.1182/blood-2018-03-785907] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Accepted: 10/06/2018] [Indexed: 12/30/2022] Open
Abstract
The classic Philadelphia chromosome (Ph)–negative myeloproliferative neoplasms (MPNs) are a heterogeneous group of hematopoietic stem-cell diseases, characterized by activated JAK/STAT signaling and significant phenotypic mimicry, including a propensity for evolution to myeloid blast phase disease. Effective therapeutic options are limited for patients with Ph− MPNs in the blast phase (MPN-BP), and allogeneic stem-cell transplantation is the only known cure. Our increasing understanding of the molecular pathogenesis of this group of diseases, coupled with the increasing availability of targeted agents, has the potential to inform new subset-specific therapeutic approaches. Ultimately, progress in MPN-BP will hinge on prospective clinical and translational investigations with the goal of generating more effective treatment interventions. This case-based review highlights the molecular and clinical heterogeneities of MPN-BP and incorporates a treatment algorithm that underscores the importance of a personalized approach to this challenging group of diseases.
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Alhuraiji A, Naqvi K, Huh YO, Ho C, Verstovsek S, Bose P. Acute lymphoblastic leukemia secondary to myeloproliferative neoplasms or after lenalidomide exposure. Clin Case Rep 2017; 6:155-161. [PMID: 29375856 PMCID: PMC5771935 DOI: 10.1002/ccr3.1264] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/02/2017] [Accepted: 09/29/2017] [Indexed: 11/06/2022] Open
Abstract
Philadelphia‐negative (Ph−) myeloproliferative neoplasms (MPN) do rarely transform to acute lymphoblastic leukemia (ALL). While causality is difficult to establish, a few cases of ALL arising after exposure to lenalidomide for registered indications (multiple myeloma, myelodysplastic syndrome with 5q deletion) have been described in the literature.
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Affiliation(s)
- Ahmad Alhuraiji
- Department of Leukemia University of Texas MD Anderson Cancer Center Houston 77030 Texas
| | - Kiran Naqvi
- Department of Leukemia University of Texas MD Anderson Cancer Center Houston 77030 Texas
| | - Yang O Huh
- Department of Hematopathology University of Texas MD Anderson Cancer Center Houston 77030 Texas
| | - Coty Ho
- Oklahoma Cancer Specialists and Research Institute Tulsa 74133 Oklahoma
| | - Srdan Verstovsek
- Department of Leukemia University of Texas MD Anderson Cancer Center Houston 77030 Texas
| | - Prithviraj Bose
- Department of Leukemia University of Texas MD Anderson Cancer Center Houston 77030 Texas
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Acute Lymphoblastic Leukemia Arising in CALR Mutated Essential Thrombocythemia. Case Rep Hematol 2016; 2016:6545861. [PMID: 26904322 PMCID: PMC4745278 DOI: 10.1155/2016/6545861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 01/06/2016] [Accepted: 01/10/2016] [Indexed: 02/06/2023] Open
Abstract
The development of acute lymphoblastic leukemia in an existing myeloproliferative neoplasm is rare with historical cases unable to differentiate between concomitant malignancies or leukemic transformation. Molecular studies of coexisting JAK2 V617F-positive myeloproliferative neoplasms and mature B cell malignancies indicate distinct disease entities arising in myeloid and lymphoid committed hematopoietic progenitor cells, respectively. Mutations of CALR in essential thrombocythemia appear to be associated with a distinct phenotype and a lower risk of thrombosis yet their impact on disease progression is less well defined. The as yet undescribed scenario of pro-B cell acute lymphoblastic leukemia arising in CALR mutated essential thrombocythemia is presented. Intensive treatment for the leukemia allowed for expansion of the original CALR mutated clone. Whether CALR mutations in myeloproliferative neoplasms predispose to the acquisition of additional malignancies, particularly lymphoproliferative disorders, is not yet known.
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A case of minor BCR-ABL1 positive acute lymphoblastic leukemia following essential thrombocythemia and originating from a clone distinct from that harboring the JAK2-V617F mutation. Exp Hematol Oncol 2014; 3:6. [PMID: 24528501 PMCID: PMC3932988 DOI: 10.1186/2162-3619-3-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 02/12/2014] [Indexed: 12/02/2022] Open
Abstract
Here we report on a case of Philadelphia chromosome positive B lymphoblastic leukemia (Ph+ALL), which developed following a long duration of essential thrombocythemia (ET). A mutational analysis of Janus Kinase 2 (JAK2) revealed that the V617F mutation was present in granulocytes and in hematopoietic stem and progenitor cells (HSPCs), but not in the CD34+CD19+ population that mostly consists of Ph+ALL cells, indicating that this Ph+ALL clone did not originate from the ET clone carrying the JAK2-V617F mutation. The minor BCR-ABL1 fusion was detected not only in the CD34+CD19+ population but also in HSPCs and granulocytes, indicating that the Philadelphia chromosome was acquired in an early hematopoietic stage at least prior to the commitment to B cell development. Upon dasatinib treatment, the minor BCR-ABL1 transcript rapidly disappeared in HSPCs but persisted in the CD34+CD19+ population. A relapse of Ph+ALL occurred nine months later without the disappearance of the minor BCR-ABL1 transcript in the bone marrow cells during the treatment course, suggesting that a resistant Ph+ALL clone may have arisen or been selected in the committed B cells rather than in HSPCs. This case report may partly contribute to filling the gap between previous data acquired from mice experiments and the phenomenon in real patients.
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Jurisic V, Pavlovic S, Colovic N, Colovic M. Possibility of transformation of primary myelofibrosis to ALL without JAK2V617F mutation. Med Oncol 2013; 30:398. [PMID: 23297051 DOI: 10.1007/s12032-012-0398-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 11/15/2012] [Indexed: 10/27/2022]
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