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Chen CC, Chen JL, Lin AJH, Yu LHL, Hou HA. Association of JAK2V617F allele burden and clinical correlates in polycythemia vera: a systematic review and meta-analysis. Ann Hematol 2024; 103:1947-1965. [PMID: 38652240 PMCID: PMC11090937 DOI: 10.1007/s00277-024-05754-4] [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: 02/26/2024] [Accepted: 04/09/2024] [Indexed: 04/25/2024]
Abstract
Janus kinase 2 (JAK2) V617F mutation is present in most patients with polycythemia vera (PV). One persistently puzzling aspect unresolved is the association between JAK2V617F allele burden (also known as variant allele frequency) and the relevant clinical characteristics. Numerous studies have reported associations between allele burden and both hematologic and clinical features. While there are strong indications linking high allele burden in PV patients with symptoms and clinical characteristics, not all associations are definitive, and disparate and contradictory findings have been reported. Hence, this study aimed to synthesize existing data from the literature to better understand the association between JAK2V617F allele burden and relevant clinical correlates. Out of the 1,851 studies identified, 39 studies provided evidence related to the association between JAK2V617F allele burden and clinical correlates, and 21 studies were included in meta-analyses. Meta-analyses of correlation demonstrated that leucocyte and erythrocyte counts were significantly and positively correlated with JAK2V617F allele burden, whereas platelet count was not. Meta-analyses of standardized mean difference demonstrated that leucocyte and hematocrit were significantly higher in patients with higher JAK2V617F allele burden, whereas platelet count was significantly lower. Meta-analyses of odds ratio demonstrated that patients who had higher JAK2V617F allele burden had a significantly greater odds ratio for developing pruritus, splenomegaly, thrombosis, myelofibrosis, and acute myeloid leukemia. Our study integrates data from approximately 5,462 patients, contributing insights into the association between JAK2V617F allele burden and various hematological parameters, symptomatic manifestations, and complications. However, varied methods of data presentation and statistical analyses prevented the execution of high-quality meta-analyses.
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Affiliation(s)
- Chih-Cheng Chen
- Division of Hematology and Oncology, Department of Medicine, Chang Gung Memorial Hospital, Chiayi, 613, Taiwan
- College of Medicine, Chang Gung University, Taoyuan, 333, Taiwan
| | - Justin L Chen
- Medical Affairs Department, Panco Healthcare Co., Ltd., A Pharmaessentia Company, Taipei, 115, Taiwan
| | - Alex Jia-Hong Lin
- Medical Affairs Department, Panco Healthcare Co., Ltd., A Pharmaessentia Company, Taipei, 115, Taiwan
| | - Lennex Hsueh-Lin Yu
- Medical Affairs Department, Panco Healthcare Co., Ltd., A Pharmaessentia Company, Taipei, 115, Taiwan
| | - Hsin-An Hou
- Division of Hematology, Department of Internal Medicine, National Taiwan University Hospital, Taipei, 100, Taiwan.
- Division of General Medicine, Department of Internal Medicine, National Taiwan University Hospital, Taipei, 100, Taiwan.
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2
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Edahiro Y, Ito T, Gotoh A, Nakamae M, Kimura F, Koike M, Kirito K, Wada H, Usuki K, Tanaka T, Mori T, Wakita S, Saito TI, Kada A, Saito AM, Shimoda K, Sugimoto Y, Kurokawa T, Tomita A, Hashimoto Y, Akashi K, Matsumura I, Takenaka K, Komatsu N. Clinical characteristics of Japanese patients with polycythemia vera: results of the JSH-MPN-R18 study. Int J Hematol 2022; 116:696-711. [PMID: 35809214 DOI: 10.1007/s12185-022-03412-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/22/2022] [Accepted: 06/22/2022] [Indexed: 10/17/2022]
Abstract
The presence of a JAK2 V617F or JAK2 exon 12 mutation is one of the three major criteria listed for the diagnosis of polycythemia vera (PV) in the 2017 World Health Organization Classification. However, a nationwide study has not yet been conducted in Japan since the discovery of JAK2 mutations. Therefore, the Japanese Society of Hematology (JSH) retrospectively analyzed the clinical characteristics of 596 Japanese patients with PV diagnosed between April 2005 and March 2018. Among the 473 patients with complete data on JAK2 mutations available, 446 (94.3%) and 10 (2.1%) were positive for the JAK2 V617F and JAK2 exon 12 mutations, respectively. During a median follow-up of 46 months (range: 0-179 months), 47 (7.9%) deaths occurred. The major causes of death were secondary malignancies (23.4%), acute leukemia (12.8%), non-leukemic progressive disease (10.6%) and thrombotic (6.4%) and hemorrhagic complications (6.4%). Thrombotic and hemorrhagic events occurred during the clinical course in 4.0% (n = 24) and 3.5% (n = 21) of patients, respectively. These results show that the international PV prognostic score (age, venous thrombosis and leukocytosis) is applicable to Japanese patients with PV.
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Affiliation(s)
- Yoko Edahiro
- Department of Hematology, Juntendo University Graduate School of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan.,Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomoki Ito
- First Department of Internal Medicine, Kansai Medical University, Osaka, Japan
| | - Akihiko Gotoh
- Department of Hematology, Tokyo Medical University, Tokyo, Japan
| | - Mika Nakamae
- Hematology, Graduate School of Medicine, Osaka Metropolitan University, Osaka, Japan
| | - Fumihiko Kimura
- Division of Hematology, Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Michiaki Koike
- Department of Hematology, Juntendo University Shizuoka Hospital, Shizuoka, Japan
| | - Keita Kirito
- Department of Hematology and Oncology, University of Yamanashi, Yamanashi, Japan
| | - Hideho Wada
- Department of Hematology, Kawasaki Medical School, Okayama, Japan
| | - Kensuke Usuki
- Department of Hematology, NTT Medical Center Tokyo, Tokyo, Japan
| | - Takayuki Tanaka
- Department of Hematology, Tottori Prefectural Central Hospital, Tottori, Japan
| | - Takehiko Mori
- Division of Hematology, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Hematology, Tokyo Medical and Dental University, Tokyo, Japan
| | - Satoshi Wakita
- Division of Hematology, Department of Internal Medicine, Nippon Medical School, Tokyo, Japan
| | - Toshiki I Saito
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Aichi, Japan
| | - Akiko Kada
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Aichi, Japan
| | - Akiko M Saito
- Clinical Research Center, National Hospital Organization Nagoya Medical Center, Aichi, Japan
| | - Kazuya Shimoda
- Division of Hematology, Diabetes, and Endocrinology, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Yuka Sugimoto
- Department of Hematology and Oncology, Mie University Graduate School of Medicine, Mie, Japan
| | - Toshiro Kurokawa
- Department of Hematology, Toyama Red Cross Hospital, Toyama, Japan
| | - Akihiro Tomita
- Department of Hematology, Fujita Health University School of Medicine, Aichi, Japan
| | - Yoshinori Hashimoto
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan.,Department of Hematology, Tottori Prefectural Central Hospital, Tottori, Japan
| | - Koichi Akashi
- Department of Medicine and Biosystemic Science, Kyushu University Graduate School of Medical Sciences, Fukuoka, Japan
| | - Itaru Matsumura
- Division of Hematology and Rheumatology, Kindai University Faculty of Medicine, Osaka, Japan
| | - Katsuto Takenaka
- Department of Hematology, Clinical Immunology and Infectious Diseases, Ehime University Graduate School of Medicine, Ehime, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University Graduate School of Medicine, 3-1-3 Hongo, Bunkyo-ku, Tokyo, 113-8431, Japan. .,Laboratory for the Development of Therapies against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan. .,Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan. .,PharmaEssentia Japan KK, Tokyo, Japan.
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3
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Mori Y, Araki M, Morishita S, Imai M, Edahiro Y, Ito M, Ochiai T, Shirane S, Hashimoto Y, Yasuda H, Ando J, Ando M, Komatsu N. Clinical features of acquired erythrocytosis: Low levels of serum erythropoietin in a subset of non-neoplastic erythrocytosis patients. Cancer Med 2022; 12:1079-1089. [PMID: 35775283 PMCID: PMC9883404 DOI: 10.1002/cam4.4958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 05/17/2022] [Accepted: 06/07/2022] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Acquired erythrocytosis can be classified into polycythemia vera (PV) and non-neoplastic erythrocytosis (NNE). The vast majority of PV patients harbor JAK2 mutations, but differentiating JAK2 mutation-negative PV from NNE is challenging due to a lack of definitive molecular markers. METHODS We studied the clinical features of 121 patients with erythrocytosis of which 47 (38.8%) were JAK2 mutation-positive and also fulfilled the diagnostic criteria for PV, and 67 (55.4%) JAK2 mutation-negative erythrocytosis patients who were diagnosed as NNE. Diagnosis was strictly based on driver mutation analysis and central pathology review. RESULTS No JAK2 mutation-negative PV patients were found in our cohort. The NNE group showed significantly younger (p < 0.01) age with higher frequency of smoking (p < 0.001), alcohol consumption (p < 0.001), and diabetes mellitus (p < 0.05), whereas the PV group (n = 47) showed significantly higher white blood cell count, platelet count, and lactate dehydrogenase (p < 0.001). Although serum erythropoietin (EPO) levels were significantly higher in NNE compared to PV (p < 0.001), approximately 40% of the NNE patients had EPO levels below the lower range of normal, fulfilling a minor diagnostic criterion of PV and raising the possibility of PV misdiagnosis. CONCLUSION Low EPO levels in JAK2 mutation-negative erythrocytosis may not be a reliable diagnostic criterion for distinguishing PV from NNE.
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Affiliation(s)
- Yosuke Mori
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Marito Araki
- Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Soji Morishita
- Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Misa Imai
- Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan
| | - Yoko Edahiro
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan,Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Masafumi Ito
- Department of PathologyJapanese Red Cross Aichi Medical Center Nagoya Daiichi HospitalNagoyaJapan
| | - Tomonori Ochiai
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan,Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Shuichi Shirane
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan,Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Yoshinori Hashimoto
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan,Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Hajime Yasuda
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Jun Ando
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan,Department of Cell Therapy and Transfusion MedicineJuntendo University Graduate School of MedicineTokyoJapan
| | - Miki Ando
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan
| | - Norio Komatsu
- Department of HematologyJuntendo University Graduate School of MedicineTokyoJapan,Laboratory for the Development of Therapies Against MPNJuntendo University Graduate School of MedicineTokyoJapan,Department of Advanced HematologyJuntendo University Graduate School of MedicineTokyoJapan,PharmaEssentia Japan KKTokyoJapan
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4
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De Marchi F, Okuda M, Morishita S, Imai M, Baba T, Horino M, Mori Y, Furuya C, Ogata S, Yang Y, Ando J, Ando M, Araki M, Komatsu N. Clinical and biological relevance of CREB3L1 in Philadelphia chromosome-negative myeloproliferative neoplasms. Leuk Res 2022; 119:106883. [DOI: 10.1016/j.leukres.2022.106883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 05/23/2022] [Accepted: 05/30/2022] [Indexed: 10/18/2022]
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Treatment options and pregnancy management for patients with PV and ET. Int J Hematol 2022; 115:659-671. [PMID: 35394259 DOI: 10.1007/s12185-022-03336-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 03/20/2022] [Accepted: 03/21/2022] [Indexed: 10/18/2022]
Abstract
Polycythemia vera (PV) and essential thrombocythemia (ET) are the two most common subtypes of Philadelphia chromosome-negative myeloproliferative neoplasm (MPN). PV results in erythrocytosis and ET in thrombocytosis. The discovery of JAK2 mutations in the majority of patients with MPN over the last 2 decades has led to the development of JAK inhibitors. Because PV and ET progress relatively slowly, the main treatment strategy for these two diseases is to prevent thrombotic complications. The first-line agent for both PV and ET is hydroxyurea, although some patients are intolerant or refractory to this compound and need other treatment options. Notably, hydroxyurea is contraindicated during pregnancy. In addition to JAK inhibitors, several new agents, such as HDAC inhibitors, LSD1 inhibitors, MDM2 inhibitors and hepcidin mimetics, have been developed as treatment options. Classical agents, such as busulfan and interferon, are still used to treat patients with PV or ET as well. Based on this context, treatment options and pregnancy management for patients with PV or ET are discussed in this review.
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Baba T, Hashimoto Y, Yasuda H, Araki M, Edahiro Y, Morishita S, Ochiai T, Shirane S, Ando J, Komatsu N. Validation and reliability of current guidelines for the treatment of essential thrombocythemia under real-world clinical settings in Japan. Hematology 2022; 27:157-166. [DOI: 10.1080/16078454.2021.2022848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Terumi Baba
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoshinori Hashimoto
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hajime Yasuda
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Marito Araki
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Edahiro
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Soji Morishita
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tomonori Ochiai
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shuichi Shirane
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Jun Ando
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Laboratory for the Development of Therapies Against MPN, Juntendo University Graduate School of Medicine, Tokyo, Japan
- Department of Advanced Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
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7
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Cell-autonomous megakaryopoiesis associated with polyclonal hematopoiesis in triple-negative essential thrombocythemia. Sci Rep 2021; 11:17702. [PMID: 34489506 PMCID: PMC8421373 DOI: 10.1038/s41598-021-97106-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 08/20/2021] [Indexed: 01/14/2023] Open
Abstract
A subset of essential thrombocythemia (ET) cases are negative for disease-defining mutations on JAK2, MPL, and CALR and defined as triple negative (TN). The lack of recurrent mutations in TN-ET patients makes its pathogenesis ambiguous. Here, we screened 483 patients with suspected ET in a single institution, centrally reviewed bone marrow specimens, and identified 23 TN-ET patients. Analysis of clinical records revealed that TN-ET patients were mostly young female, without a history of thrombosis or progression to secondary myelofibrosis and leukemia. Sequencing analysis and human androgen receptor assays revealed that the majority of TN-ET patients exhibited polyclonal hematopoiesis, suggesting a possibility of reactive thrombocytosis in TN-ET. However, the serum levels of thrombopoietin (TPO) and interleukin-6 in TN-ET patients were not significantly different from those in ET patients with canonical mutations and healthy individuals. Rather, CD34-positive cells from TN-ET patients showed a capacity to form megakaryocytic colonies, even in the absence of TPO. No signs of thrombocytosis were observed before TN-ET development, denying the possibility of hereditary thrombocytosis in TN-ET. Overall, these findings indicate that TN-ET is a distinctive disease entity associated with polyclonal hematopoiesis and is paradoxically caused by hematopoietic stem cells harboring a capacity for cell-autonomous megakaryopoiesis.
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8
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Interferon therapy for pregnant patients with essential thrombocythemia in Japan. Int J Hematol 2020; 113:106-111. [PMID: 32965639 DOI: 10.1007/s12185-020-03001-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/02/2020] [Accepted: 09/07/2020] [Indexed: 10/23/2022]
Abstract
Essential thrombocythemia (ET) mainly affects the elderly, but can also develop in women of childbearing age. The risk of miscarriage and other complications during pregnancy in ET patients are reported to be higher than that compared to the general population. Therefore, management of pregnancy in ET patients requires special considerations. Several groups recommend interferon (IFN) therapy for ET patients with high-risk pregnancies, but currently no guidelines are available in Japan. We report the outcomes of nine ET patients with ten consecutive high-risk pregnancies. All patients were successfully managed with IFN-α during their pregnancies. All patients also received aspirin and switched to unfractionated heparin around 36 weeks of gestation. As for the seven pregnancies in which IFN-α was started after detection of pregnancy, median platelet counts decreased from 910 to 573 × 109/L after 2 months of IFN-α therapy, and median platelet counts at the time of delivery for all ten pregnancies was 361 × 109/L. All patients gave birth to healthy children. IFN-α was well tolerated, safe, and effective as a cytoreductive therapy for all patients. Although evidence is limited and the use of IFN is not approved in Japan, we suggest considering IFN therapy for high-risk ET pregnancies.
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9
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Edahiro Y, Araki M, Inano T, Ito M, Morishita S, Misawa K, Fukuda Y, Imai M, Ohsaka A, Komatsu N. Clinical and molecular features of patients with prefibrotic primary myelofibrosis previously diagnosed as having essential thrombocythemia in Japan. Eur J Haematol 2019; 102:516-520. [PMID: 30977935 DOI: 10.1111/ejh.13236] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Prefibrotic/early primary myelofibrosis (pre-PMF) and essential thrombocythemia (ET) exhibited different features of bone marrow; however, this is not always easy to judge objectively, making pathologists' distinction often suboptimal. In the WHO 2008 criteria, pre-PMF was not defined as a subgroup of PMF; therefore, affected patients were at a higher risk of misdiagnosis with ET. In this study, we examined the prevalence of pre-PMF patients among those previously diagnosed with ET in Japan. METHOD We reviewed bone marrow specimens and clinical and molecular parameters of patients who were previously diagnosed with ET by the WHO 2008 criteria. RESULTS Among 107 ET patients, 13 patients were redefined as having pre-PMF. Pre-PMF patients exhibited a higher frequency of MPL mutation and increased platelet counts compared to true ET patients. Molecular analysis revealed the frequencies of high-risk molecular mutations, such as ASXL1, EZH2, and SRSF2, were significantly increased in pre-PMF patients than those in true ET patients. CONCLUSION These results demonstrated the value of reexamining clinical records for patients diagnosed with ET by the WHO 2008 criteria and emphasized that adequate examinations of patients' bone marrow are crucial for an accurate diagnosis of pre-PMF and ET.
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Affiliation(s)
- Yoko Edahiro
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Tadaaki Inano
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Masafumi Ito
- Department of Pathology, Japanese Red Cross, Nagoya 1st Hospital, Nagoya, Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kyohei Misawa
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yasutaka Fukuda
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Misa Imai
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
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10
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Lin Y, Lin R, Zhou G, Liu Y, Dong W, Cao Y, Xie X, Gu W. Decitabine combined with all-trans retinoic acid as treatment in a case of primary myelofibrosis transforming into acute myeloid leukaemia. J Int Med Res 2019; 47:1064-1071. [PMID: 30616420 PMCID: PMC6381513 DOI: 10.1177/0300060518820147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Primary myelofibrosis (PMF) is a type of cloned myeloproliferative neoplasm stemming from haematopoietic stem cells, and tends to transform to acute myeloid leukaemia (AML) in approximately 10–20% of cases over a 10-year period. The transformation into AML has a poor prognosis, with a median overall survival of only 2.6 months in patients receiving supportive treatment. To date, treatment of AML transformation remains poor. The case of a 58-year-old female patient with AML transformed from PMF, who was treated with decitabine combined with all-trans retinoic acid, is reported. The patient had complete remission and a 17-month overall survival from initial diagnosis of transformed AML, with tolerated haematologic toxicity during the treatment period.
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Affiliation(s)
- Yan Lin
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Rongrong Lin
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Guangquan Zhou
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yue Liu
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Weimin Dong
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Yang Cao
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Xiaobao Xie
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Weiying Gu
- Department of Haematology, The First People's Hospital of Changzhou, Third Affiliated Hospital of Soochow University, Changzhou, China
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11
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Edahiro Y, Ando J, Suzuki T, Fukumura Y, Masuda A, Sakayori S, Takeda J, Maruyama Y, Makino S, Itakura A, Komatsu N. Multiple Placental Infarcts in a Pregnant Woman with Essential Thrombocythemia. Intern Med 2018; 57:3647-3650. [PMID: 30101937 PMCID: PMC6355404 DOI: 10.2169/internalmedicine.1311-18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Myeloproliferative neoplasms (MPNs), including polycythemia vera, essential thrombocythemia (ET), and primary myelofibrosis, mainly occur in older patients, but have also been reported in younger patients. A "second peak" occurs in female patients in their thirties, particularly in ET; thus, the management of pregnancy is often discussed. We herein present the case of a 33-year-old woman with a high platelet count and multiple placental infarcts during delivery who was subsequently diagnosed with ET. Although there are no worldwide guidelines for the management of MPNs in pregnancy, the risk of thrombosis is markedly increased in these patients, and antithrombotic therapy should be considered.
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Affiliation(s)
- Yoko Edahiro
- Department of Hematology, Juntendo University School of Medicine, Japan
| | - Jun Ando
- Department of Hematology, Juntendo University School of Medicine, Japan
| | - Toshifumi Suzuki
- Department of Obstetrics and Gynecology, Juntendo University School of Medicine, Japan
| | - Yuki Fukumura
- Department of Human Pathology, Juntendo University School of Medicine, Japan
| | - Azuchi Masuda
- Department of Hematology, Juntendo University School of Medicine, Japan
| | - Shiori Sakayori
- Department of Obstetrics and Gynecology, Juntendo University School of Medicine, Japan
| | - Jun Takeda
- Department of Obstetrics and Gynecology, Juntendo University School of Medicine, Japan
| | - Yojiro Maruyama
- Department of Obstetrics and Gynecology, Juntendo University School of Medicine, Japan
| | - Shintaro Makino
- Department of Obstetrics and Gynecology, Juntendo University School of Medicine, Japan
| | - Atsuo Itakura
- Department of Obstetrics and Gynecology, Juntendo University School of Medicine, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University School of Medicine, Japan
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Yang N, Park S, Cho MS, Lee M, Hong KS, Mun YC, Seong CM, Huh HJ, Huh J. GATA1 Expression in BCR/ABL1-negative Myeloproliferative Neoplasms. Ann Lab Med 2018; 38:296-305. [PMID: 29611379 PMCID: PMC5895858 DOI: 10.3343/alm.2018.38.4.296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/19/2017] [Accepted: 02/20/2018] [Indexed: 12/21/2022] Open
Abstract
Background This study aimed to determine GATA1 expression levels to better characterize subgroups in BCR/ABL1-negative myeloproliferative neoplasms (MPNs). Methods This study enrolled 49 patients diagnosed as having BCR/ABL1-negative MPN on the basis of the 2016 World Health Organization classification : nine polycythemia vera (PV), 17 essential thrombocythemia (ET), 12 prefibrotic primary myelofibrosis (prePMF), and 11 overt primary myelofibrosis (PMF). Relevant clinical and laboratory data were retrieved from the medical records. The molecular analysis of CALR and MPL mutations and quantification of JAK2 V617F allele burden were performed. GATA1 expression was assessed by an immunohistochemical assay on bone marrow biopsy. GATA1 expression was analyzed serially in 18 patients. Results GATA1 expression decreased significantly in PMF compared with that in other subtypes, while no statistical difference was identified between ET and prePMF. GATA1 expression did not differ according to the mutation profiles or the allele burden of JAK2 V617F, but it decreased significantly in patients with overt fibrosis or leukemic transformation. Conclusions Our results suggest that GATA1 expression is significantly low in PMF and decreases with progressive fibrosis and possibly with leukemic transformation, although our attempt to accurately distinguish between subgroups using GATA1 immunohistochemical approach did not achieve statistical significance. A large patient cohort with long term follow-up is required to evaluate the prognostic value of GATA1 expression.
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Affiliation(s)
- Naery Yang
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Sholhui Park
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Min Sun Cho
- Department of Pathology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Miae Lee
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Ki Sook Hong
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Yeung Chul Mun
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Chu Myong Seong
- Department of Internal Medicine, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Hee Jin Huh
- Department of Laboratory Medicine, Dongguk University Ilsan Hospital, Goyang, Korea.
| | - Jungwon Huh
- Department of Laboratory Medicine, College of Medicine, Ewha Womans University, Seoul, Korea.
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Lang T, Nie Y, Wang Z, Huang Q, An L, Wang Y, Wufuer G, Maimaiti A, Fu L, Li Y, Zhang X, Aisimutula A, Wang X, Zhu L, Liu H, Mao M. Correlation analysis between JAK2, MPL, and CALR mutations in patients with myeloproliferative neoplasms of Chinese Uygur and Han nationality and their clinical characteristics. J Int Med Res 2018; 46:4650-4659. [PMID: 30084272 PMCID: PMC6259388 DOI: 10.1177/0300060518787719] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Background Genetic factors play a role in the etiology of BCR-ABL-negative myeloproliferative neoplasms (MPNs). This study explored the relationship between mutations in the Janus kinase 2 gene (JAK2), MPL, and the calreticulin gene (CALR) in Uygur and Han Chinese patients with BCR-ABL fusion gene-negative MPN and corresponding clinical features. Methods A total of 492 BCR-ABL-negative MPN patients treated in our hospital from May 2013 to August 2016 were enrolled. Genomic DNA was extracted from peripheral blood and used for PCR amplification and DNA sequencing. Mutations including JAK2 V617F, MPL W515L/K, and those in JAK2 exon 12 and CALR were analyzed and compared with patient clinical characteristics. Results Of the 492 MPN patients, 169 were Uygur and 323 were Han. In these two patient groups, JAK2 mutations were detected in 39.64% and 52.63%, respectively, CALR mutations were detected in 10.06% and 20.43%, respectively, and MPL mutations were detected in 0.93% of Han patients. The age, white blood cell count, platelet levels, and hemoglobin levels in JAK2 in Han patients were higher than those in Uygur patients. Conclusion Han MPN patients harboring JAK2 mutations had higher level of age, WBC, PLT, and Hb than Uyghur patients with the same mutations.
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Affiliation(s)
- Tao Lang
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Yuling Nie
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Zengsheng Wang
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Qin Huang
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Li An
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Yichun Wang
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Guzailinuer Wufuer
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Aziguli Maimaiti
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Ling Fu
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Yan Li
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Xiaoyan Zhang
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Aihemaitijiang Aisimutula
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Xiaomin Wang
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Lin Zhu
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Hong Liu
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
| | - Min Mao
- Department of Hematology, People's Hospital of Xinjiang Uygur Autonomous Region, Urumqi, Xinjiang Uygur Autonomous Region, China
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Takei H, Edahiro Y, Mano S, Masubuchi N, Mizukami Y, Imai M, Morishita S, Misawa K, Ochiai T, Tsuneda S, Endo H, Nakamura S, Eto K, Ohsaka A, Araki M, Komatsu N. Skewed megakaryopoiesis in human induced pluripotent stem cell-derived haematopoietic progenitor cells harbouring calreticulin mutations. Br J Haematol 2018; 181:791-802. [DOI: 10.1111/bjh.15266] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 02/27/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Hiraku Takei
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Yoko Edahiro
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Shuichi Mano
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
- Department of Life Science and Medical Bioscience; Waseda University Graduate School; Tokyo Japan
| | - Nami Masubuchi
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
- Research Institute for Disease of Old Age; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Yoshihisa Mizukami
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
- Centre for Genomic and Regenerative Medicine; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Misa Imai
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Kyohei Misawa
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Tomonori Ochiai
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Satoshi Tsuneda
- Department of Life Science and Medical Bioscience; Waseda University Graduate School; Tokyo Japan
| | - Hiroshi Endo
- Department of Clinical Application; CiRA, Kyoto University; Kyoto Japan
| | - Sou Nakamura
- Department of Clinical Application; CiRA, Kyoto University; Kyoto Japan
| | - Koji Eto
- Department of Clinical Application; CiRA, Kyoto University; Kyoto Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Norio Komatsu
- Department of Haematology; Juntendo University Graduate School of Medicine; Tokyo Japan
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Ochiai T, Yasuda H, Araki M, Misawa K, Morishita S, Nudejima M, Hironaka Y, Shirane S, Edahiro Y, Gotoh A, Ohsaka A, Komatsu N. The 2014 BCSH criteria and the 2016 WHO criteria for essential thrombocythemia: A comparison in a large-scale cohort. Eur J Haematol 2018; 100:544-549. [PMID: 29405428 DOI: 10.1111/ejh.13041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/23/2018] [Indexed: 01/06/2023]
Abstract
OBJECTIVE There are currently 2 representative diagnostic criteria for essential thrombocythemia (ET), the 2014 British Committee for Standards in Hematology Guidelines (BCSH) criteria and the 2016 World Health Organization (WHO) criteria. We compare and discuss the advantages and disadvantages of the 2 criteria. METHOD We applied the 2 criteria to 403 patients with thrombocytosis and suspected myeloproliferative neoplasms (MPN) and compared patient populations. RESULTS The BCSH criteria diagnosed ET in 279 patients (BCSH-ET) whereas the WHO criteria diagnosed ET in 203 patients (WHO-ET). There were 83 patients diagnosable only by the BCSH criteria (BCSH-only-ET), of which under the WHO classification, 69 patients fell under the category of MPN, unclassifiable (MPN-u), 12 patients were PMF, prefibrotic/early stage (pre-PMF), and 2 patients were polycythemia vera. Patient characteristics such as age, hemoglobin, hematocrit, platelet counts, lactate dehydrogenase levels, JAK2V617F allele burdens, prevalence of myelofibrosis and splenomegaly, and frequencies of thrombotic events and treatment did not differ between WHO-ET and BCSH-only-ET, but BCSH-only-ET patients showed higher WBC counts and higher JAK2V617F mutation frequencies. CONCLUSION The BCSH criteria diagnosed ET in a broader range of patients encompassing a significant number of patients who would otherwise be diagnosed as pre-PMF or MPN-u.
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Affiliation(s)
- Tomonori Ochiai
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Hajime Yasuda
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Kyohei Misawa
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Mai Nudejima
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yumi Hironaka
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Shuichi Shirane
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Edahiro
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akihiko Gotoh
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University Graduate School of Medicine, Tokyo, Japan
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16
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Kamiunten A, Shide K, Kameda T, Sekine M, Kubuki Y, Ito M, Toyama T, Kawano N, Marutsuka K, Maeda K, Takeuchi M, Kawano H, Sato S, Ishizaki J, Akizuki K, Tahira Y, Shimoda H, Hidaka T, Yamashita K, Matsuoka H, Shimoda K. Thrombohemorrhagic events, disease progression, and survival in polycythemia vera and essential thrombocythemia: a retrospective survey in Miyazaki prefecture, Japan. Int J Hematol 2018; 107:681-688. [DOI: 10.1007/s12185-018-2428-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 02/21/2018] [Accepted: 02/21/2018] [Indexed: 12/16/2022]
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17
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Misawa K, Yasuda H, Araki M, Ochiai T, Morishita S, Shirane S, Edahiro Y, Gotoh A, Ohsaka A, Komatsu N. Mutational subtypes of JAK2 and CALR correlate with different clinical features in Japanese patients with myeloproliferative neoplasms. Int J Hematol 2018; 107:673-680. [DOI: 10.1007/s12185-018-2421-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 02/05/2018] [Accepted: 02/05/2018] [Indexed: 01/15/2023]
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18
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Misawa K, Yasuda H, Araki M, Ochiai T, Morishita S, Nudejima M, Hironaka Y, Shirane S, Edahiro Y, Gotoh A, Ohsaka A, Komatsu N. The 2016 WHO diagnostic criteria for polycythemia vera renders an accurate diagnosis to a broader range of patients including masked polycythemia vera: Comparison with the 2008 WHO diagnostic criteria. Am J Hematol 2017; 92:E128-E130. [PMID: 28376569 DOI: 10.1002/ajh.24752] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 03/29/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Kyohei Misawa
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Hajime Yasuda
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Tomonori Ochiai
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Mai Nudejima
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Yumi Hironaka
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Shuichi Shirane
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Yoko Edahiro
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Akihiko Gotoh
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation; Juntendo University Graduate School of Medicine; Tokyo Japan
| | - Norio Komatsu
- Department of Hematology; Juntendo University Graduate School of Medicine; Tokyo Japan
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Hmga2 collaborates with JAK2V617F in the development of myeloproliferative neoplasms. Blood Adv 2017; 1:1001-1015. [PMID: 29296743 DOI: 10.1182/bloodadvances.2017004457] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 05/18/2017] [Indexed: 12/13/2022] Open
Abstract
High-mobility group AT-hook 2 (HMGA2) is crucial for the self-renewal of fetal hematopoietic stem cells (HSCs) but is downregulated in adult HSCs via repression by MIRlet-7 and the polycomb-recessive complex 2 (PRC2) including EZH2. The HMGA2 messenger RNA (mRNA) level is often elevated in patients with myelofibrosis that exhibits an advanced myeloproliferative neoplasm (MPN) subtype, and deletion of Ezh2 promotes the progression of severe myelofibrosis in JAK2V617F mice with upregulation of several oncogenes such as Hmga2. However, the direct role of HMGA2 in the pathogenesis of MPNs remains unknown. To clarify the impact of HMGA2 on MPNs carrying the driver mutation, we generated ΔHmga2/JAK2V617F mice overexpressing Hmga2 due to deletion of the 3' untranslated region. Compared with JAK2V617F mice, ΔHmga2/JAK2V617F mice exhibited more severe leukocytosis, anemia and splenomegaly, and shortened survival, whereas severity of myelofibrosis was comparable. ΔHmga2/JAK2V617F cells showed a greater repopulating ability that reproduced the severe MPN compared with JAK2V617F cells in serial bone marrow transplants, indicating that Hmga2 promotes MPN progression at the HSC level. Hmga2 also enhanced apoptosis of JAK2V617F erythroblasts that may worsen anemia. Relative to JAK2V617F hematopoietic stem and progenitor cells (HSPCs), over 30% of genes upregulated in ΔHmga2/JAK2V617F HSPCs overlapped with those derepressed by Ezh2 loss in JAK2V617F/Ezh2Δ/Δ HSPCs, suggesting that Hmga2 may facilitate upregulation of Ezh2 targets. Correspondingly, deletion of Hmga2 ameliorated anemia and splenomegaly in JAK2V617F/Ezh2Δ/wild-type mice, and MIRlet-7 suppression and PRC2 mutations correlated with the elevated HMGA2 mRNA levels in patients with MPNs, especially myelofibrosis. These findings suggest the crucial role of HMGA2 in MPN progression.
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Ikeda K, Ueda K, Sano T, Ogawa K, Ikezoe T, Hashimoto Y, Morishita S, Komatsu N, Ohto H, Takeishi Y. The Amelioration of Myelofibrosis with Thrombocytopenia by a JAK1/2 Inhibitor, Ruxolitinib, in a Post-polycythemia Vera Myelofibrosis Patient with a JAK2 Exon 12 Mutation. Intern Med 2017; 56:1705-1710. [PMID: 28674362 PMCID: PMC5519475 DOI: 10.2169/internalmedicine.56.7871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Less than 5% of patients with polycythemia vera (PV) show JAK2 exon 12 mutations. Although PV patients with JAK2 exon 12 mutations are known to develop post-PV myelofibrosis (MF) as well as PV with JAK2V617F, the role of JAK inhibitors in post-PV MF patients with JAK2 exon 12 mutations remains unknown. We describe how treatment with a JAK1/2 inhibitor, ruxolitinib, led to the rapid amelioration of marrow fibrosis, erythrocytosis and thrombocytopenia in a 77-year-old man with post-PV MF who carried a JAK2 exon 12 mutation (JAK2H538QK539L). This case suggests that ruxolitinib is a treatment option for post-PV MF in patients with thrombocytopenia or JAK2 exon 12 mutations.
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Affiliation(s)
- Kazuhiko Ikeda
- Department of Hematology, Fukushima Medical University, Japan
- Department of Transfusion and Transplantation Immunology, Fukushima Medical University, Japan
| | - Koki Ueda
- Department of Hematology, Fukushima Medical University, Japan
| | - Takahiro Sano
- Department of Hematology, Fukushima Medical University, Japan
| | - Kazuei Ogawa
- Department of Hematology, Fukushima Medical University, Japan
| | - Takayuki Ikezoe
- Department of Hematology, Fukushima Medical University, Japan
| | - Yuko Hashimoto
- Department of Pathology and Diagnostic Pathology, Fukushima Medical University, Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University School of Medicine, Japan
| | - Hitoshi Ohto
- Department of Transfusion and Transplantation Immunology, Fukushima Medical University, Japan
| | - Yasuchika Takeishi
- Department of Cardiovascular Medicine, Fukushima Medical University, Japan
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Hu L, Pu L, Ding Y, Li M, Cabanero M, Xie J, Zhou D, Yang D, Zhang C, Wang H, Zhai Z, Ru X, Li J, Xiong S. Relationship between JAK2V617F mutation, allele burden and coagulation function in Ph-negative myeloproliferative neoplasms. ACTA ACUST UNITED AC 2016; 22:354-360. [PMID: 27976991 DOI: 10.1080/10245332.2016.1267830] [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: 10/20/2022]
Abstract
OBJECTIVES Our aim was to explore the relationship between JAK2V617F mutation allele burden and hematological parameters especially in coagulation function in Chinese population. METHODS This study included 133 Ph-negative myeloproliferative neoplasms (MPNs) patients between 2013 and 2016. All the clinical and experimental data of patients were collected at the time of the diagnosis without any prior treatment, including blood parameters, coagulation function, splenomegaly, vascular events and chromosome karyotype. PCR and qPCR were used to detect JAK2V617F mutation and JAK2V617F mutation allele burden. RESULTS In polycythemia vera patients, a positive correlation between the allele burden of JAK2V617F mutation and PLT counts was found; in essential thrombocythemia (ET) patients, WBC counts, RBC counts, HB, and HCT were higher in mutated patients than in wild-type patients. Furthermore, PT-INR was higher in ET and PMF mutated patients. In addition, a positive correlation between the allele burden of JAK2V617F mutation and activated partial thromboplastin time (APTT) was observed in JAK2V617F mutated ET patients. CONCLUSIONS Higher hematologic parameters including counts of WBC, RBC, and PLT are closely associated with JAK2V617F mutation and its burden in Ph-negative MPNs; importantly, PT-INR, APTT are also related to JAK2V617F mutation and allele burden. Thus, our data indicate that JAK2V617F mutation allele burden might not only represent the burden of MPN but also alter the coagulation function.
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Affiliation(s)
- Linhui Hu
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Lianfang Pu
- b The Third People's Hospital of Bengbu , Bengbu , Anhui Province , People's Republic of China
| | - Yangyang Ding
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Manman Li
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Michael Cabanero
- c UHN (University Health Network), University of Toronto , Toronto , ON , Canada
| | - Jingxin Xie
- d Department of Physiology and Pathophysiology , School of Basic Medical Sciences, Fudan University , Shanghai , People's Republic of China
| | - Dejun Zhou
- e Department of Hematology , Huaibei Miners General Hospital , Huaibei , Anhui Province , People's Republic of China
| | - Dongdong Yang
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Cui Zhang
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Huiping Wang
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Zhimin Zhai
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Xiang Ru
- f School of Nursing, Anhui Medical University , Hefei , Anhui Province , People's Republic of China
| | - Jingrong Li
- g Department of Emergency , The Second Hospital of Anhui Medical university , Hefei , Anhui Province , People's Republic of China
| | - Shudao Xiong
- a Department of Hematology/Hematological Lab , The Second Hospital of Anhui Medical University , Hefei , Anhui Province , People's Republic of China
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22
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Liew EL, Araki M, Hironaka Y, Mori S, Tan TZ, Morishita S, Edahiro Y, Ohsaka A, Komatsu N. Identification of AIM2 as a downstream target of JAK2V617F. Exp Hematol Oncol 2016; 5:2. [PMID: 26823993 PMCID: PMC4730608 DOI: 10.1186/s40164-016-0032-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Accepted: 01/21/2016] [Indexed: 12/02/2022] Open
Abstract
Background The gain-of-function mutation JAK2V617F is frequently found in Philadelphia-chromosome-negative myeloproliferative neoplasm (MPN) patients. However, the tumorigenic properties of JAK2V617F have mostly been characterized in in vivo and in vitro murine models due to the lack of appropriate human cell lines. Methods Using the multipotent hematologic cell line UT-7/GM, we established D9, a novel human cell line that expresses JAK2V617F upon tetracycline addition. We assessed cellular differentiation in UT-7/GM cells when JAK2V617F was induced, and we used microarrays to analyze changes in mRNA expression caused by JAK2V617F. Results Using the human D9 cell line, we demonstrated that the induction of JAK2V617F leads to cytokine-independent cell growth with increased STAT activation and erythroid differentiation, mimicking the characteristics observed in polycythemia vera, making it a suitable in vitro model for studying this disorder. Interestingly, JAK2V617F-dependent erythroid cell differentiation was blocked when GM-CSF was added to the culture, suggesting that the GM-CSF pathway antagonizes JAK2V617F-induced erythroid cell differentiation. Our microarray analysis identified several genes involved in inflammasome activation, such as AIM2, IL1B, and CASP1, which were significantly up-regulated in JAK2V617F-induced cells. Conclusions The observed inflammasome activation following JAK2V617F induction is consistent with a recent report demonstrating the involvement of IL1B in myelofibrosis development in a JAK2V617F model mouse. These results indicate that the D9 cell line should be useful for characterizing the signaling pathways downstream of JAK2V617F, allowing for the identification of effector molecules that contribute to the development of MPN. Electronic supplementary material The online version of this article (doi:10.1186/s40164-016-0032-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ei Leen Liew
- Department of Hematology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421 Japan ; Fujii Memorial Research Institute, Otsuka Pharmaceutical Co., Ltd., Shiga, Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University School of Medicine, Tokyo, Japan
| | - Yumi Hironaka
- Department of Hematology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421 Japan
| | - Seiichi Mori
- Division of Cancer Genomics, Cancer Institute of Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Tuan Zea Tan
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Republic of Singapore
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University School of Medicine, Tokyo, Japan
| | - Yoko Edahiro
- Department of Hematology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421 Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421 Japan
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Kitanaka A, Takenaka K, Shide K, Miyamoto T, Kondo T, Ozawa K, Kurokawa M, Akashi K, Shimoda K. Splenic irradiation provides transient palliation for symptomatic splenomegaly associated with primary myelofibrosis: a report on 14 patients. Int J Hematol 2016; 103:423-8. [DOI: 10.1007/s12185-016-1940-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 01/03/2016] [Accepted: 01/07/2016] [Indexed: 11/25/2022]
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24
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Shirane S, Araki M, Morishita S, Edahiro Y, Sunami Y, Hironaka Y, Noguchi M, Koike M, Sato E, Ohsaka A, Komatsu N. Consequences of the JAK2V617F allele burden for the prediction of transformation into myelofibrosis from polycythemia vera and essential thrombocythemia. Int J Hematol 2014; 101:148-53. [DOI: 10.1007/s12185-014-1721-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 11/27/2014] [Accepted: 11/28/2014] [Indexed: 02/02/2023]
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25
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Shirane S, Araki M, Morishita S, Edahiro Y, Takei H, Yoo Y, Choi M, Sunami Y, Hironaka Y, Noguchi M, Koike M, Noda N, Ohsaka A, Komatsu N. JAK2, CALR, and MPL mutation spectrum in Japanese patients with myeloproliferative neoplasms. Haematologica 2014; 100:e46-8. [PMID: 25398833 DOI: 10.3324/haematol.2014.115113] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Shuichi Shirane
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Edahiro
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiraku Takei
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan Department of Life Science and Medical Bioscience, Waseda University, Tokyo, Japan
| | - Yongjin Yoo
- Department of Biomedical Sciences, Seoul National University College of Medicine, Korea
| | - Murim Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Korea
| | - Yoshitaka Sunami
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yumi Hironaka
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Masaaki Noguchi
- Department of Hematology, Juntendo Urayasu Hospital, Chiba, Japan
| | - Michiaki Koike
- Department of Hematology, Juntendo Shizuoka Hospital, Japan
| | - Naohiro Noda
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
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26
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Harada-Shirado K, Ikeda K, Ogawa K, Ohkawara H, Kimura H, Kai T, Noji H, Morishita S, Komatsu N, Takeishi Y. Dysregulation of the MIRLET7/HMGA2 axis with methylation of the CDKN2A promoter in myeloproliferative neoplasms. Br J Haematol 2014; 168:338-49. [PMID: 25236537 DOI: 10.1111/bjh.13129] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Accepted: 08/06/2014] [Indexed: 12/22/2022]
Abstract
Overexpression of high mobility group AT-hook 2 (Hmga2), which is negatively regulated by MIRLET7 micro RNAs through 3'-untranslated region (3'UTR), causes proliferative haematopoiesis mimicking myeloproliferative neoplasms (MPNs) and contributes to progression of myelofibrosis in mice. Thus, we investigated HMGA2 mRNA expression in 66 patients with MPNs including 23 polycythaemia vera (PV), 33 essential thrombocythaemia (ET) and 10 primary myelofibrosis (PMF). HMGA2 mRNA expression, especially variant 1 with 3'UTR that contains MIRLET7-specific sites, rather than variant 2 lacking 3'UTR, is frequently deregulated due to decreased MIRLET7 expression in granulocytes from over 20% of PV and ET, and in either granulocytes or CD34(+) cells from 100% of PMF. Patients with deregulated HMGA2 mRNA expression were significantly more likely to show splenomegaly, high serum lactate dehydrogenase values, and methylation of the CDKN2A promoter compared with other patients without deregulation of HMGA2. A histone deacetylase inhibitor, panobinostat, significantly increased MIRLET7 expression and reduced variant 1 of HMGA2 mRNA expression, but not variant 2, in both U937 cells and PMF-derived CD34(+) cells. Moreover, both panobinostat and small interfering RNA of HMGA2 demethylated the CDKN2A promoter in U937 cells. In conclusion, the frequently dysregulated MIRLET7/HMGA2 axis could be a therapeutic target in MPNs.
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Affiliation(s)
- Kayo Harada-Shirado
- Department of Cardiology and Hematology, Fukushima Medical University, Fukushima, Japan
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27
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Takei H, Morishita S, Araki M, Edahiro Y, Sunami Y, Hironaka Y, Noda N, Sekiguchi Y, Tsuneda S, Ohsaka A, Komatsu N. Detection of MPLW515L/K mutations and determination of allele frequencies with a single-tube PCR assay. PLoS One 2014; 9:e104958. [PMID: 25144224 PMCID: PMC4140728 DOI: 10.1371/journal.pone.0104958] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 07/14/2014] [Indexed: 12/21/2022] Open
Abstract
A gain-of-function mutation in the myeloproliferative leukemia virus (MPL) gene, which encodes the thrombopoietin receptor, has been identified in patients with essential thrombocythemia and primary myelofibrosis, subgroups of classic myeloproliferative neoplasms (MPNs). The presence of MPL gene mutations is a critical diagnostic criterion for these diseases. Here, we developed a rapid, simple, and cost-effective method of detecting two major MPL mutations, MPLW515L/K, in a single PCR assay; we termed this method DARMS (dual amplification refractory mutation system)-PCR. DARMS-PCR is designed to produce three different PCR products corresponding to MPLW515L, MPLW515K, and all MPL alleles. The amplicons are later detected and quantified using a capillary sequencer to determine the relative frequencies of the mutant and wild-type alleles. Applying DARMS-PCR to human specimens, we successfully identified MPL mutations in MPN patients, with the exception of patients bearing mutant allele frequencies below the detection limit (5%) of this method. The MPL mutant allele frequencies determined using DARMS-PCR correlated strongly with the values determined using deep sequencing. Thus, we demonstrated the potential of DARMS-PCR to detect MPL mutations and determine the allele frequencies in a timely and cost-effective manner.
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Affiliation(s)
- Hiraku Takei
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
- Department of Life Science and Medical Bioscience, Waseda University, Tokyo, Japan
| | - Soji Morishita
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Marito Araki
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yoko Edahiro
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yoshitaka Sunami
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yumi Hironaka
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
| | - Naohiro Noda
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan
| | - Yuji Sekiguchi
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki, Japan
| | - Satoshi Tsuneda
- Department of Life Science and Medical Bioscience, Waseda University, Tokyo, Japan
| | - Akimichi Ohsaka
- Department of Transfusion Medicine and Stem Cell Regulation, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Norio Komatsu
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan
- * E-mail:
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