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Kimura H, Onozawa M, Hashiguchi J, Hidaka D, Kanaya M, Matsukawa T, Okada H, Kondo T, Matsuno Y, Teshima T. Hereditary thrombocythemia due to splicing donor site mutation of THPO in a Japanese family. Ann Hematol 2024; 103:89-96. [PMID: 37962621 DOI: 10.1007/s00277-023-05523-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023]
Abstract
Thrombopoietin (THPO) is an essential factor for platelet production. Hereditary thrombocythemia (HT) is caused by a germline mutation of THPO, MPL, or JAK2 and is inherited in an autosomal-dominant manner. We identified a Japanese family with HT due to a point mutation of the splicing donor site of the THPO gene (THPO c.13 + 1G > A). Bone marrow biopsy showed increased megakaryocytes mimicking essential thrombocythemia. One affected family member developed chronic myeloid leukemia. We cloned the mutation and developed mutated and wild type THPO expression vectors. Molecular analysis showed that the mutation causes an exon 3 skipping transcript of THPO that abrogates a suppressive untranslated upstream open reading frame. Although the transcript levels of THPO mRNA were comparable, mutated transcripts were more efficiently translated and THPO protein expression was significantly higher than that of the wild type.
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Affiliation(s)
- Hiroyuki Kimura
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, Japan
| | - Masahiro Onozawa
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, Japan.
| | - Junichi Hashiguchi
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, Japan
| | - Daisuke Hidaka
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, Japan
| | - Minoru Kanaya
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Toshihiro Matsukawa
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, Japan
| | - Hiromi Okada
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - Takeshi Kondo
- Blood Disorders Center, Aiiku Hospital, Sapporo, Japan
| | - Yoshihiro Matsuno
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - Takanori Teshima
- Department of Hematology, Hokkaido University Faculty of Medicine, Graduate School of Medicine, Kita 15, Nishi 7, Kita-Ku, Sapporo, Japan
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Hassankrishnamurthy S, Mody MD, Kota VK. A Case of Chronic Myelogenous Leukemia Occurring in a Patient Treated for Essential Thrombocythemia. AMERICAN JOURNAL OF CASE REPORTS 2019; 20:10-14. [PMID: 30602717 PMCID: PMC6325661 DOI: 10.12659/ajcr.911854] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Patient: Female, 49 Final Diagnosis: Essential thrombocythemia with CML Symptoms: Decreased appetite • fatigue • weight loss Medication: — Clinical Procedure: — Specialty: Hematology
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Affiliation(s)
| | - Mayur D Mody
- Department of Internal Medicine, Atlanta Veterans Affairs Medical Center, Atlanta, GA, USA.,Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Vamsi K Kota
- Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
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Arlt MF, Rajendran S, Holmes SN, Wang K, Bergin IL, Ahmed S, Wilson TE, Glover TW. Effects of hydroxyurea on CNV induction in the mouse germline. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2018; 59:698-714. [PMID: 30218578 PMCID: PMC7275641 DOI: 10.1002/em.22233] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/19/2018] [Accepted: 07/27/2018] [Indexed: 06/08/2023]
Abstract
Copy number variants (CNVs) are important in genome variation and genetic disease, with new mutations arising frequently in the germline and somatic cells. Replication stress caused by aphidicolin and hydroxyurea (HU) is a potent inducer of de novo CNVs in cultured mammalian cells. HU is used extensively for long-term management of sickle cell disease. Here, we examined the effects of HU treatment on germline CNVs in vivo in male mice to explore whether replication stress can act as a CNV mutagen in germline mitotic divisions as in cultured cells and whether this would support a concern for increased CNV mutations in offspring of men treated with HU. Several trials of HU administration were performed by oral gavage and subcutaneous pump, with CNVs characterized in C57BL/6 x C3H/HeJ hybrid mouse offspring by microarray and mate-pair sequencing. HU had a short half-life of ~14 min and a narrow dose window over which studies could be performed while maintaining fertility. Tissue histopathology and reticulocyte micronucleus assays verified that doses had a substantial tissue and genetic toxicity. CNVs were readily detected in offspring that originated in both paternal and maternal mouse strains, as de novo and inherited events. However, HU did not increase CNV formation above baseline levels. These results reveal a high rate of CNV mutagenesis in the mouse germline but do not support the hypothesis that HU would increase CNV formation during mammalian spermatogenesis, perhaps due to highly toxic effects on sperm development or experimental variables related to HU pharmacology in mice. Environ. Mol. Mutagen. 59:698-714, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Martin F. Arlt
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Sountharia Rajendran
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Sandra N. Holmes
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Kathleen Wang
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Ingrid L. Bergin
- Unit for Laboratory Animal Medicine, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Samreen Ahmed
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Thomas E. Wilson
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
- Department of Pathology, University of Michigan, Ann Arbor, Michigan, United States of America
| | - Thomas W. Glover
- Department of Human Genetics, University of Michigan, Ann Arbor, Michigan, United States of America
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Pagnano KBB, Delamain MT, Magnus MM, Vassallo J, DE Souza CA, DE Almeida D, Lorand-Metze I. Concomitant essential thrombocythemia with JAK2 V617F mutation in a patient with chronic myeloid leukemia with major molecular response with imatinib and long-term follow-up. Oncol Lett 2016; 12:485-487. [PMID: 27347169 PMCID: PMC4906713 DOI: 10.3892/ol.2016.4631] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Accepted: 01/22/2016] [Indexed: 12/30/2022] Open
Abstract
The association of chronic myeloid leukemia (CML) with other myeloproliferative neoplasms (MPNs), in particular with the V617F mutation in the Janus kinase 2 (JAK2) gene, is very uncommon, and there are only a few cases reported in the literature. In the present study, the case of a 73-year-old man with CML and persistent thrombocytosis, is reported. The patient achieved a complete cytogenetic response and major molecular response (MR) with imatinib. The patient presented JAK2 V617F mutation, and bone marrow morphology was consistent with essential thrombocythemia. The patient was treated with imatinib and hydroxyurea to control the platelet count, and maintains complete MR with imatinib upon 10 years of follow-up. Although rare, the association of breakpoint cluster region-Abelson rearrangement and JAK2 V617F mutation should be investigated in patients with MPN, since both genetic anomalies may be present at diagnosis or may emerge during treatment, and require different therapeutic approaches.
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Affiliation(s)
| | - Márcia Torresan Delamain
- Hematology and Hemotherapy Center, University of Campinas, Campinas, São Paulo, SP 13083-868, Brazil
| | - Mariana Munari Magnus
- Hematology and Hemotherapy Center, University of Campinas, Campinas, São Paulo, SP 13083-868, Brazil
| | - José Vassallo
- Department of Pathological Anatomy, University of Campinas, Campinas, São Paulo, SP 13083-868, Brazil
| | - Carmino Antonio DE Souza
- Hematology and Hemotherapy Center, University of Campinas, Campinas, São Paulo, SP 13083-868, Brazil
| | - Daiane DE Almeida
- Hematology and Hemotherapy Center, University of Campinas, Campinas, São Paulo, SP 13083-868, Brazil
| | - Irene Lorand-Metze
- Hematology and Hemotherapy Center, University of Campinas, Campinas, São Paulo, SP 13083-868, Brazil
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van Kooten Niekerk PB, Roug AS, Petersen CC, Ommen HB, Kjeldsen E, Bendix K, Nyvold CG, Nederby L, Hokland P. Chronic myeloid leukaemia presenting with isolated thrombocythaemia, a case revealing its stem cell biology. Br J Haematol 2013; 162:141-4. [PMID: 23593974 DOI: 10.1111/bjh.12339] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
MESH Headings
- Aged
- Diagnosis, Differential
- Female
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Neoplastic Stem Cells/metabolism
- Thrombocytosis/diagnosis
- Thrombocytosis/drug therapy
- Thrombocytosis/metabolism
- Treatment Outcome
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Park SH, Chi HS, Cho YU, Jang S, Park CJ, Kim DY, Lee JH, Lee KH. Two cases of myeloproliferative neoplasm with a concurrent JAK2 (V617F) mutation and BCR/ABL translocation without chronic myelogenous leukemia phenotype acquisition during hydroxyurea treatment. Ann Lab Med 2013; 33:229-32. [PMID: 23667855 PMCID: PMC3646203 DOI: 10.3343/alm.2013.33.3.229] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 01/11/2013] [Accepted: 02/26/2013] [Indexed: 11/22/2022] Open
Affiliation(s)
- Sang Hyuk Park
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Hyun-Sook Chi
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Young-Uk Cho
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Seongsoo Jang
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Chan-Jeoung Park
- Department of Laboratory Medicine, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Dae-Young Kim
- Department of Internal Medicine, Division of Hematology, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Je-Hwan Lee
- Department of Internal Medicine, Division of Hematology, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
| | - Kyoo-Hyung Lee
- Department of Internal Medicine, Division of Hematology, University of Ulsan, College of Medicine and Asan Medical Center, Seoul, Korea
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Two cases of pediatric essential thrombocythemia managed effectively with hydroxyurea. Int J Hematol 2012; 96:810-3. [PMID: 23054653 DOI: 10.1007/s12185-012-1193-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 09/21/2012] [Accepted: 09/24/2012] [Indexed: 10/27/2022]
Abstract
Thrombocytosis is common in infancy and childhood. Essential thrombocythemia (ET), a myeloproliferative disorder, is a much less common cause of thrombocytosis in childhood. We report two cases of essential thrombocythemia in 5- and 10-year-old children, who presented with platelet counts of more than 1,000,000/mm(3). Treatment is not recommended for ET in an asymptomatic patient in the absence of bleeding or thrombosis and a platelet count <1,500,000/mm(3). Our first case had platelets >1,500,000/mm(3), and a second child was symptomatic with recurrent headache. Both responded well to therapy with hydroxyurea (dose 15-30 mg/kg/day) and tolerated it well.
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Xiao X, Zhang Y, Zhang GS, Zheng WL, Xiao L, Liu SF. Coexistence of JAK2V617F mutation and BCR-ABL1 transcript in two Chinese patients with chronic myelogenous leukemia. Acta Haematol 2011; 127:47-9. [PMID: 22025110 DOI: 10.1159/000331564] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2011] [Accepted: 08/09/2011] [Indexed: 11/19/2022]
Affiliation(s)
- Xiang Xiao
- Division of Hematology, The Second XiangYa Hospital, Central South University, Changsha, PR China
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Weng WH, Shih LY. Occurrence of BCR-ABL1-positive chronic myeloid leukemia following essential thrombocythemia. Acta Haematol 2011; 126:220-3. [PMID: 21934297 DOI: 10.1159/000330524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Accepted: 06/26/2011] [Indexed: 11/19/2022]
MESH Headings
- Adult
- Antineoplastic Agents/therapeutic use
- Fusion Proteins, bcr-abl/blood
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/blood
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/complications
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/drug therapy
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/surgery
- Male
- Protein Kinase Inhibitors/therapeutic use
- Recurrence
- Thrombocythemia, Essential/blood
- Thrombocythemia, Essential/complications
- Thrombocythemia, Essential/drug therapy
- Translocation, Genetic
- Treatment Outcome
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Affiliation(s)
- Wei-Hung Weng
- School of Medicine, Chang Gung University, Taoyuan, Taiwan
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