1
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Sevoyan A, Mekinian A, Chermat F, Adès L, Ivanyan A, Fenaux P, Hakobyan Y. MDS/CMML from resource-limited region: Characteristics and comparison to tertiary reference European center. Eur J Haematol 2024; 112:296-300. [PMID: 37822035 DOI: 10.1111/ejh.14115] [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: 04/12/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/13/2023]
Abstract
INTRODUCTION Myelodysplastic Syndromes (MDS) and Chronic Myelomonocytic Leukemia (CMML) are clonal myeloid malignancies, characterized by bone marrow failure leading to cytopenias (and possible myeloproliferation for CMML) and a high propensity to evolve to Acute Myeloid Leukemia (AML). OBJECTIVE AND METHODS The aim of our retrospective study was to evaluate the clinical and hematological features; the prevalence of MDS subtypes, R-IPSS, and the outcome of 106 Armenian MDS/CMML patients diagnosed over the 2008-2020 period in a single Armenian Hematology center and compare them to French MDS patients included in the GFM registry. RESULTS Median age in the Armenian cohort was 64 years (range 19-84) and 55% were males. The main MDS subtypes were MDS-MLD (29.2%) and MDS-SLD (27.3%), the least frequent was del 5q (0.9%). By comparison, a higher prevalence of MDS-MLD, MDS-EB2, and MDS-RS was found in the French cohort. Armenian patients' cohort generally had poor access to standard MDS treatment and 42.3% of the patients were transfusion dependent. Overall survival, however, did not significantly differ between Armenian and French cohorts. CONCLUSION Our study stresses issues regarding epidemiology, access to diagnosis, difficulties of risk stratification, and access to treatment.
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Affiliation(s)
- Anna Sevoyan
- Department of Hematology, Hôpital of Hematology, Yerevan, Armenia
| | - Arsène Mekinian
- Service de Médecine Interne and Inflammation-Immunopathology-Biotherapy Department (DHU i2B), Hôpital Saint-Antoine, Paris, France
- French Armenian research center, Yerevan, Armenia
| | - Fatiha Chermat
- Department of Hematology, Hôpital Saint-Louis, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
- INSERM U944 Institut de Recherche Saint-Louis (IRSL) and Université de Paris, Paris, France
| | - Lionel Adès
- Department of Hematology, Hôpital Saint-Louis, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
- INSERM U944 Institut de Recherche Saint-Louis (IRSL) and Université de Paris, Paris, France
| | - A Ivanyan
- Department of Hematology, Hôpital of Hematology, Yerevan, Armenia
| | - Pierre Fenaux
- Department of Hematology, Hôpital Saint-Louis, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
- INSERM U944 Institut de Recherche Saint-Louis (IRSL) and Université de Paris, Paris, France
| | - Yervand Hakobyan
- Department of Hematology, Hôpital of Hematology, Yerevan, Armenia
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Mahmud M, Vasireddy S, Gowin K, Amaraneni A. Myeloproliferative Neoplasms: Contemporary Review and Molecular Landscape. Int J Mol Sci 2023; 24:17383. [PMID: 38139212 PMCID: PMC10744078 DOI: 10.3390/ijms242417383] [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: 09/15/2023] [Revised: 11/29/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023] Open
Abstract
Myelofibrosis (MF), Myeloproliferative neoplasms (MPNs), and MDS/MPN overlap syndromes have a broad range of clinical presentations and molecular abnormalities, making their diagnosis and classification complex. This paper reviews molecular aberration, epigenetic modifications, chromosomal anomalies, and their interactions with cellular and other immune mechanisms in the manifestations of these disease spectra, clinical features, classification, and treatment modalities. The advent of new-generation sequencing has broadened the understanding of the genetic factors involved. However, while great strides have been made in the pharmacological treatment of these diseases, treatment of advanced disease remains hematopoietic stem cell transplant.
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Affiliation(s)
- Muftah Mahmud
- Department of Medicine, Midwestern University Internal Medicine Residency Consortium, Cottonwood, AZ 86326, USA
| | - Swati Vasireddy
- Department of Medicine, University of Arizona Health Sciences, Tucson, AZ 85701, USA
| | - Krisstina Gowin
- Division of Hematology and Oncology, Department of Medicine, University of Arizona Cancer Center, Tucson, AZ 85701, USA
| | - Akshay Amaraneni
- Division of Hematology and Oncology, Department of Medicine, University of Arizona Cancer Center, Tucson, AZ 85701, USA
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3
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Nann D, Rau A, Mahmutovic L, Steinhilber J, Meca V, Federmann B, Vogel W, Bonzheim I, Quintanilla-Martinez L, Fend F. Targeted NGS on sequential bone marrow biopsies aids in the evaluation of cytopenias and monocytosis and documents clonal evolution-a proof of principle study. Virchows Arch 2023; 483:835-845. [PMID: 37610626 DOI: 10.1007/s00428-023-03627-1] [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: 05/26/2023] [Revised: 08/01/2023] [Accepted: 08/13/2023] [Indexed: 08/24/2023]
Abstract
Differential diagnosis of clonal versus reactive cytopenia and monocytosis, respectively, frequently presents a diagnostic challenge. With the two recent classifications of myeloid disorders, mutational analysis has gained importance as a diagnostic tool. However, reports on its utility on trephine bone marrow biopsies (BMB) are sparse. The aim of our proof of principle study was to determine the suitability of targeted sequencing for the longitudinal evaluation of cytopenia and monocytosis and demonstration of clonal evolution on sequential BMB. Seventy-seven EDTA-decalcified BMB of 33 patients with peripheral cytopenia and/or monocytosis, including at least one follow-up biopsy/patient, were included. Initial morphological diagnoses were idiopathic cytopenia of undetermined significance (ICUS, 8 cases), MDS (without blast increase, 7 cases), MDS with increased blasts/excess blasts (MDS-IB/EB) (11 cases), and CMML (7 cases). Thirty-one genes relevant for myeloid disorders were examined using two custom AmpliSeq NGS panels. Mutations were found in the initial BMB of 5/8 cases of ICUS, thus changing the diagnosis to clonal cytopenia of unknown significance (CCUS), 5/7 MDS, 10/11 MDS-IB/EB, and 7/7 CMML. Clonal evolution was observed in 14/33 (42%) cases, mostly associated with disease progression. None of the wild-type patients acquired mutations during follow-up. NGS-based mutation profiling is a robust diagnostic tool for BMB and provides valuable additional information, especially for cases with no/minimal dysplasia, and for better risk stratification of MDS. Tracking variant allele frequency and appearance of mutations over time allows for observing clonal evolution or relapse.
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Affiliation(s)
- Dominik Nann
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
| | - Achim Rau
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
| | - Lejla Mahmutovic
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
| | - Julia Steinhilber
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
| | - Vanessa Meca
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
| | - Birgit Federmann
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
- Department of Peptide-Based Immunotherapy and Clinical Collaboration Unit Translational Immunology, Department of Internal Medicine, University Hospital Tuebingen, Tuebingen, Germany
- German Cancer Consortium (DKTK) and German Cancer Research Center (DKFZ), Partner Site Tuebingen, Tuebingen, Germany
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", Tuebingen, Germany
| | - Wichard Vogel
- Department of Hematology, Oncology, Clinical Immunology and Rheumatology, University Hospital Tuebingen, Tuebingen, Germany
| | - Irina Bonzheim
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany
- Cluster of Excellence iFIT (EXC2180) "Image-Guided and Functionally Instructed Tumor Therapies", Tuebingen, Germany
| | - Falko Fend
- Institute of Pathology and Neuropathology, University Hospital Tuebingen and Comprehensive Cancer Center, Tuebingen, Germany.
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4
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Guastafierro V, Ubezio M, Manes N, Milanesi C, Della Porta M, Bonometti A. CSF3R-mutant chronic myelomonocytic leukemia is a distinct clinically subset with abysmal prognosis: a case report and systematic review of the literature. Leuk Lymphoma 2023; 64:1566-1573. [PMID: 37395413 DOI: 10.1080/10428194.2023.2227750] [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: 05/10/2023] [Revised: 06/09/2023] [Accepted: 06/15/2023] [Indexed: 07/04/2023]
Abstract
Chronic myelomonocytic leukemia (CMML) is a myelodysplastic syndrome/myeloproliferative neoplasm (MDS/MPN) chacaterized by persistent peripheral blood monocytosis, hypercellular bone marrow and dysplasia at least in one myeloid lineage. CMML shares much of its molecular landscape with other myeloid neoplasms, while differs from others such as chronic neutrophilic leukemia (CNL), given the high frequency of CSF3R mutations in the latter. In this article, we report a case of CSF3R-mutated CMML and dissect this rare entity by reviewing the medical literature, with the intent to understand how this rare mutation shapes CMML's clinical and morphological phenotype. CSF3R-mutated CMML emerges as a rare entity meeting the ICC/WHO diagnostic criteria for CMML and simultaneously showing clinical-pathological and molecular traits of CNL and atypical chronic myeloid leukemia, rising an important and difficult diagnostic and therapeutical issue.
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MESH Headings
- Humans
- Leukemia, Myelomonocytic, Chronic/diagnosis
- Leukemia, Myelomonocytic, Chronic/genetics
- Leukemia, Myelomonocytic, Chronic/pathology
- Leukemia, Neutrophilic, Chronic/diagnosis
- Leukemia, Neutrophilic, Chronic/genetics
- Mutation
- Myeloproliferative Disorders
- Leukemia, Myeloid, Chronic, Atypical, BCR-ABL Negative/genetics
- Leukemia, Myeloid, Chronic, Atypical, BCR-ABL Negative/pathology
- Prognosis
- Receptors, Colony-Stimulating Factor/genetics
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Affiliation(s)
- Vincenzo Guastafierro
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Pathology, IRCCS Humanitas Clinical and Research Center, Milan, Italy
| | - Marta Ubezio
- IRCCS Humanitas Clinical and Research Center, Milan, Italy
| | - Nicla Manes
- IRCCS Humanitas Clinical and Research Center, Milan, Italy
| | | | - Matteo Della Porta
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- IRCCS Humanitas Clinical and Research Center, Milan, Italy
| | - Arturo Bonometti
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
- Department of Pathology, IRCCS Humanitas Clinical and Research Center, Milan, Italy
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5
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Fontana D, Elli EM, Pagni F, Piazza R. Myelodysplastic Syndromes/Myeloproliferative Overlap Neoplasms and Differential Diagnosis in the WHO and ICC 2022 Era: A Focused Review. Cancers (Basel) 2023; 15:3175. [PMID: 37370785 DOI: 10.3390/cancers15123175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/05/2023] [Accepted: 06/01/2023] [Indexed: 06/29/2023] Open
Abstract
The myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) category comprises a varied group of myeloid neoplastic diseases characterized by clinical and pathologic overlapping features of both myelodysplastic and myeloproliferative neoplasms. For these reasons, these tumors are challenging in terms of diagnosis. The recent World Health Organization (WHO) 2022 classification and the International Consensus Classification (ICC) made changes in the classification of MDS/MPN compared to the previous 2016 WHO classification and improved the diagnostic criteria of these entities. The aim of this review is to describe the main entities reported in the more recent classifications, focusing on chronic myelomonocytic leukemia (CMML), MDS/MPN with neutrophilia (or atypical CML [aCML]), and MDS/MPN with SF3B1 mutation and thrombocytosis/MDS/MPN with ring sideroblasts and thrombocytosis. A particular emphasis is given to the differential diagnosis and analysis of subtle divergences and semantic differences between the WHO classification and the ICC for these entities.
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Affiliation(s)
- Diletta Fontana
- Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
| | - Elena M Elli
- Hematology Division and Bone Marrow Unit, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy
| | - Fabio Pagni
- Department of Medicine and Surgery, Pathology, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy
| | - Rocco Piazza
- Department of Medicine and Surgery, University of Milano-Bicocca, 20900 Monza, Italy
- Hematology Division and Bone Marrow Unit, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy
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6
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Lame D, Pianelli M, Morsia E, Carturan A, Goteri G, Mancini S, Olivieri A, Poloni A. A rare case of aCML associated with CNS involvement and with aggressive clinical course. Leuk Res Rep 2023; 19:100361. [PMID: 36698866 PMCID: PMC9867965 DOI: 10.1016/j.lrr.2023.100361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
The presence of neutrophilic leukocytosis may underlie a wide variety of diseases. Some rare causes of neutrophilia might be chronic neutrophilic leukemia (CNL) and myelodysplastic/myeloproliferative neoplasm with neutrophilia (MDS with neutrophilia). Here we report a case of a 78-year-old woman who came to our ER due to severe leukocytosis and anemia on a routine check-up. The patient was asymptomatic and the last exams available showed a mild leukopenia and thrombocytopenia. The abdominal echography showed mild splenomegaly The patient underwent bone marrow (BM) examinations. One week later, the patient presented mental deterioration. The patient underwent a cranial CT and RMN that showed multiple lesions of 11 mm in the brain parenchyma, cerebellum and encephalic trunk. Another week later, the clinical presentations worsened: she was in a comatous state and feverish 40 °C unresponsive to steroid therapy. Autopsy showed a leukemic and hemorrhage infiltration in multiple organs and in the BM a cellularity of 100% represented by myeloid elements with a slowdown maturation with blasts 5%. According to WHO 2016 this case can be reported as an aCML, an MDS/MPN overlap syndrome that is difficult to differentiate from a CNL.
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7
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Zeidan AM, Bewersdorf JP, Buckstein R, Sekeres MA, Steensma DP, Platzbecker U, Loghavi S, Boultwood J, Bejar R, Bennett JM, Borate U, Brunner AM, Carraway H, Churpek JE, Daver NG, Della Porta M, DeZern AE, Efficace F, Fenaux P, Figueroa ME, Greenberg P, Griffiths EA, Halene S, Hasserjian RP, Hourigan CS, Kim N, Kim TK, Komrokji RS, Kutchroo V, List AF, Little RF, Majeti R, Nazha A, Nimer SD, Odenike O, Padron E, Patnaik MM, Roboz GJ, Sallman DA, Sanz G, Stahl M, Starczynowski DT, Taylor J, Xie Z, Xu M, Savona MR, Wei AH, Abdel-Wahab O, Santini V. Finding consistency in classifications of myeloid neoplasms: a perspective on behalf of the International Workshop for Myelodysplastic Syndromes. Leukemia 2022; 36:2939-2946. [PMID: 36266326 DOI: 10.1038/s41375-022-01724-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/28/2022] [Accepted: 10/04/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Amer M Zeidan
- Section of Hematology, Department of Internal Medicine, Yale University School of Medicine and Yale Cancer Center, New Haven, CT, USA.
| | - Jan Philipp Bewersdorf
- Department of Medicine, Leukemia Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Rena Buckstein
- Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Mikkael A Sekeres
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | | | | | - Sanam Loghavi
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jacqueline Boultwood
- Blood Cancer UK Molecular Haematology Unit, Nuffield Division of Clinical Laboratory Sciences, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Rafael Bejar
- Division of Hematology and Oncology, Moores Cancer Center, UC San Diego, La Jolla, CA, USA
| | - John M Bennett
- Hematopathology Division, Departments of Pathology and Medicine, University of Rochester Medical Center, Rochester, NY, USA
| | - Uma Borate
- Division of Hematology, Department of Internal Medicine, James Cancer Center, Ohio State University, Columbus, OH, USA
| | - Andrew M Brunner
- Leukemia Program, Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, MA, USA
| | - Hetty Carraway
- Leukemia Program, Hematology and Medical Oncology, Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Jane E Churpek
- Department of Hematology, Oncology, and Palliative Care, Carbone Cancer Center, The University of Wisconsin-Madison, Madison, WI, USA
| | - Naval G Daver
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Matteo Della Porta
- Department of Biomedical Sciences, Humanitas Clinical and Research Center & Humanitas University, Milan, Italy
| | - Amy E DeZern
- Johns Hopkins Sidney Kimmel Comprehensive Cancer Centre, Baltimore, MD, USA
| | - Fabio Efficace
- Italian Group for Adult Hematologic Diseases (GIMEMA), Data Center and Health Outcomes Research Unit, Rome, Italy
| | | | - Maria E Figueroa
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Peter Greenberg
- Division of Hematology, Department of Medicine, Cancer Institute, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Stephanie Halene
- Section of Hematology, Department of Internal Medicine, Yale University School of Medicine and Yale Cancer Center, New Haven, CT, USA
| | | | - Christopher S Hourigan
- Laboratory of Myeloid Malignancies, Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Nina Kim
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Tae Kon Kim
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Rami S Komrokji
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Vijay Kutchroo
- Evergrande Center for Immunologic Diseases, Harvard Medical School, Brigham and Women's Hospital, Boston, MA, USA
| | - Alan F List
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Richard F Little
- Division of Cancer Treatment and Diagnosis, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ravi Majeti
- Division of Hematology, Department of Medicine, Cancer Institute, and Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Aziz Nazha
- Department of Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, USA
| | - Stephen D Nimer
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Olatoyosi Odenike
- The University of Chicago Medicine and University of Chicago Comprehensive Cancer Center, Chicago, IL, USA
| | - Eric Padron
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Mrinal M Patnaik
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Rochester, MN, USA
| | - Gail J Roboz
- Weill Cornell Medical College, New York, NY, USA
| | - David A Sallman
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Guillermo Sanz
- Hematology Department, Hospital Universitario y Politécnico La Fe, Valencia, Spain; Health Research Institute La Fe, Valencia, Spain; and CIBERONC, Instituto de Salud Carlos III, Madrid, Spain
| | - Maximilian Stahl
- Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA, USA
| | - Daniel T Starczynowski
- Division of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Justin Taylor
- Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Zhuoer Xie
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Mina Xu
- Departments of Pathology & Laboratory Medicine, Yale University School of Medicine and Yale Cancer Center, New Haven, CT, USA
| | - Michael R Savona
- Division of Hematology/Oncology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Andrew H Wei
- Peter MacCallum Cancer Centre, Royal Melbourne Hospital, University of Melbourne and Walter and Eliza Hall Institute of Medical Research, Melbourne, Australia
| | - Omar Abdel-Wahab
- Department of Medicine, Leukemia Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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8
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Kuendgen A, Kasprzak A, Germing U. Hybrid or Mixed Myelodysplastic/Myeloproliferative Disorders - Epidemiological Features and Overview. Front Oncol 2021; 11:778741. [PMID: 34869027 PMCID: PMC8635204 DOI: 10.3389/fonc.2021.778741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 10/25/2021] [Indexed: 11/25/2022] Open
Abstract
The WHO-category Myelodysplastic/Myeloproliferative neoplasms (MDS/MPNs) recognizes a unique group of clonal myeloid malignancies exhibiting overlapping features of myelodysplastic as well as myeloproliferative neoplasms. The group consists of chronic myelomonocytic leukemia (CMML), atypical chronic myeloid leukemia, BCR-ABL1-negative (aCML), juvenile myelomonocytic leukemia (JMML), myelodysplastic/myeloproliferative neoplasm with ringed sideroblasts and thrombocytosis (MDS/MPN-RS-T), and myelodysplastic/myeloproliferative neoplasms, unclassifiable (MDS/MPN-U). The most frequent entity in this category is CMML, while all other diseases are extremely rare. Thus, only very limited data on the epidemiology of these subgroups exists. An appropriate diagnosis and classification can be challenging since the diagnosis is still largely based on morphologic criteria and myelodysplastic as well as myeloproliferative features can be found in various occurrences. The diseases in this category share several features that are common in this specific WHO-category, but also exhibit specific traits for each disease. This review summarizes published data on epidemiological features and offers a brief overview of the main diagnostic criteria and clinical characteristics of the five MDS/MPN subgroups.
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Affiliation(s)
- Andrea Kuendgen
- Department of Hematology, Oncology, and Clinical Immunology, Heinrich-Heine-University Hospital Duesseldorf, Duesseldorf, Germany
| | - Annika Kasprzak
- Department of Hematology, Oncology, and Clinical Immunology, Heinrich-Heine-University Hospital Duesseldorf, Duesseldorf, Germany
| | - Ulrich Germing
- Department of Hematology, Oncology, and Clinical Immunology, Heinrich-Heine-University Hospital Duesseldorf, Duesseldorf, Germany
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9
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Fontana D, Gambacorti-Passerini C, Piazza R. Molecular Pathogenesis of BCR-ABL-Negative Atypical Chronic Myeloid Leukemia. Front Oncol 2021; 11:756348. [PMID: 34858828 PMCID: PMC8631780 DOI: 10.3389/fonc.2021.756348] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/22/2021] [Indexed: 11/30/2022] Open
Abstract
Atypical chronic myeloid leukemia is a rare disease whose pathogenesis has long been debated. It currently belongs to the group of myelodysplastic/myeloproliferative disorders. In this review, an overview on the current knowledge about diagnosis, prognosis, and genetics is presented, with a major focus on the recent molecular findings. We describe here the molecular pathogenesis of the disease, focusing on the mechanisms of action of the main mutations as well as on gene expression profiling. We also present the treatment options focusing on emerging targeted therapies.
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Affiliation(s)
- Diletta Fontana
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Carlo Gambacorti-Passerini
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Hematology and Clinical Research Unit, San Gerardo Hospital, Monza, Italy
| | - Rocco Piazza
- Department of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Hematology and Clinical Research Unit, San Gerardo Hospital, Monza, Italy.,Bicocca Bioinformatics, Biostatistics and Bioimaging Centre (B4), University of Milano-Bicocca, Milan, Italy
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10
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Wedge E, Hansen JW, Dybedal I, Creignou M, Ejerblad E, Lorenz F, Werlenius O, Ungerstedt J, Holm MS, Nilsson L, Kittang AO, Antunovic P, Rohon P, Andersen MK, Papaemmanuil E, Bernard E, Jädersten M, Hellström-Lindberg E, Grønbæk K, Ljungman P, Friis LS. Allogeneic Hematopoietic Stem Cell Transplantation for Chronic Myelomonocytic Leukemia: Clinical and Molecular Genetic Prognostic Factors in a Nordic Population. Transplant Cell Ther 2021; 27:991.e1-991.e9. [PMID: 34500124 DOI: 10.1016/j.jtct.2021.08.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 08/17/2021] [Accepted: 08/31/2021] [Indexed: 10/20/2022]
Abstract
Chronic myelomonocytic leukemia (CMML) is an aggressive disease in which survival after allogeneic hematopoietic stem cell transplantation (HCT) remains relatively poor. An assessment of prognostic factors is an important part of treatment decision making and has the potential to be greatly improved by the inclusion of molecular genetics. However, there is a significant knowledge gap in the interpretation of mutational patterns. This study aimed to describe outcomes of allogeneic HCT in patients with CMML in relation to clinical and molecular genetic risk factors. This retrospective study included 64 patients with CMML who underwent allogeneic HCT between 2008 and 2018, with a median follow-up of 5.4 years. Next-generation sequencing using targeted myeloid panels was carried out on saved material from 51 patients from the time of transplantation. Kaplan-Meier and Cox regression were used for analysis of overall survival (OS), and cumulative incidence with competing risks and Fine and Gray models were used for analysis of relapse and nonrelapse mortality (NRM). Mutations were detected in 48 patients (94%), indicating high levels of minimal residual disease (MRD) positivity at transplantation, even among those in complete remission (CR) (n = 14), 86% of whom had detectable mutations. The most frequently mutated genes were ASXL1 (37%), TET2 (37%), RUNX1 (33%), SRSF2 (26%), and NRAS (20%). Risk stratification using the CMML-specific Prognostic Scoring System molecular score (CPSS-Mol) resulted in 45% of patients moving to a higher risk-group compared with risk stratification using the CPSS. High leucocyte count (≥13 × 109/L), transfusion requirement, and previous intensive chemotherapy were associated with higher incidence of relapse. Being in CR was not linked to better outcomes. Neither ASXL1 nor RUNX1 mutation was associated with a difference in OS, relapse, or NRM, despite being high risk in the nontransplantation setting. TET2 mutations were associated with a significantly higher 3-year OS (73% versus 40%; P = .039). Achieving MRD-negative CR was rare in this CMML cohort, which may explain why we did not observe better outcomes for those in CR. This merits further investigation. Our analyses suggest that the negative impact of ASXL1 and RUNX1 mutations can be overcome by allogeneic HCT; however, risk stratification is complex in CMML and requires larger cohorts and multivariate models, presenting an ongoing challenge in this rare disease.
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Affiliation(s)
- Eileen Wedge
- Department of Hematology, Copenhagen University Hospital, Copenhagen, Denmark; Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Danish Stem Cell Center (Danstem), University of Copenhagen, Copenhagen, Denmark
| | - Jakob Werner Hansen
- Department of Hematology, Copenhagen University Hospital, Copenhagen, Denmark; Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Danish Stem Cell Center (Danstem), University of Copenhagen, Copenhagen, Denmark
| | - Ingunn Dybedal
- Department of Hematology, Oslo University Hospital, Oslo, Norway
| | - Maria Creignou
- Center for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden; Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | | | - Fryderyk Lorenz
- Department of Medicine, University Hospital of Umeå, Umeå, Sweden
| | - Olle Werlenius
- Section of Hematology and Coagulation, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Johanna Ungerstedt
- Center for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden; Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | - Mette Skov Holm
- Department of Hematology, Aarhus University Hospital, Aarhus, Denmark
| | - Lars Nilsson
- Department of Medicine, Skåne University Hospital, Lund, Sweden
| | - Astrid Olsnes Kittang
- Section for Hematology, Department of Medicine, Haukeland University Hospital, Bergen, Norway
| | - Peter Antunovic
- Department of Hematology, Linköping University Hospital, Linköping, Sweden
| | - Peter Rohon
- Department of Hemato-Oncology, University Hospital Olomouc, Olomouc, Czech Republic
| | | | - Elli Papaemmanuil
- Computational Oncology Service, Memorial Sloan Kettering Cancer Center, New York, New York; Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Elsa Bernard
- Computational Oncology Service, Memorial Sloan Kettering Cancer Center, New York, New York; Center for Hematologic Malignancies, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Martin Jädersten
- Center for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden; Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | - Eva Hellström-Lindberg
- Center for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden; Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
| | - Kirsten Grønbæk
- Department of Hematology, Copenhagen University Hospital, Copenhagen, Denmark; Biotech Research and Innovation Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; The Danish Stem Cell Center (Danstem), University of Copenhagen, Copenhagen, Denmark
| | - Per Ljungman
- Center for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden; Department of Hematology, Karolinska University Hospital, Stockholm, Sweden
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11
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Ibrar W, Zhang W, Cox JL, Cushman-Vokoun A, Fu K, Greiner TC, Yuan J. The utility of a myeloid mutation panel for the diagnosis of myelodysplastic syndrome and myelodysplastic/myeloproliferative neoplasm. Int J Lab Hematol 2021; 43:1501-1509. [PMID: 34270867 DOI: 10.1111/ijlh.13659] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/03/2021] [Accepted: 06/29/2021] [Indexed: 11/29/2022]
Abstract
INTRODUCTION The diagnosis of myelodysplastic syndromes (MDS) and myelodysplastic/myeloproliferative neoplasms (MDS/MPN) is based on morphology and cytogenetics/FISH findings per 2017 WHO classification. With rare exceptions, somatic mutations have not been incorporated as the diagnostic criteria. METHODS We analyzed the utility of mutational analysis with a targeted 54-gene or 40-gene next-generation sequencing (NGS) panel in the diagnosis of MDS and MDS/MPN. RESULTS We retrospectively collected 92 patients who presented with unexplained cytopenia with or without cytosis, including 32 low-grade MDS (MDS-L), 18 high-grade MDS (MDS-H), 5 therapy-related MDS (MDS-TR), 19 MDS/MPN, and 18 negative cases. Of 92 patients, 197 somatic mutations involving 38 genes were detected and had variant allele frequency (VAF) ranging from 3% to 99%. The most common mutated genes were TET2, ASXL1, RUNX1, TP53, SRSF2, and SF3B1. MDS-L, MDS-H, MDS-TR, and MDS/MPN showed an average number of somatic mutations with a mean VAF of 1.9/33%, 2.6/30%, 2/36%, and 4/41%, respectively. SF3B1 mutations were exclusively observed in MDS-L and MDS/MPN. TP53 gene mutations were more frequently seen in MDS-H and MDS-TR. Among 34 patients with a diagnosis of MDS or MDS/MPN with normal cytogenetics, 31 patients (91%) had at least 1 mutation and 24 patients (71%) had ≥2 mutations with ≥10% VAF. CONCLUSION A myeloid mutational panel provides additional evidence of clonality besides cytogenetics/FISH studies in the diagnosis of cytopenia with or without cytosis. Two or more mutations with ≥10% VAF highly predicts MDS and MDS/MPN with a positive predictive value of 100%.
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Affiliation(s)
- Warda Ibrar
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Weiwei Zhang
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Jesse Lee Cox
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Allison Cushman-Vokoun
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Kai Fu
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Timothy C Greiner
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
| | - Ji Yuan
- Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, NE, USA
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12
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Hunter AM, Al Ali N, Mai A, Shah S, Swoboda DM, Kuykendall A, Talati C, Sweet KL, Sallman DA, Lancet JE, Komrokji RS, Padron E. Leukocytosis is associated with end organ damage and mortality in chronic myelomonocytic leukemia and can be mitigated by cytoreductive therapy. Leuk Res 2021; 109:106640. [PMID: 34144312 DOI: 10.1016/j.leukres.2021.106640] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/02/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Anthony M Hunter
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA, USA
| | - Najla Al Ali
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Anne Mai
- Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Savan Shah
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA; Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - David M Swoboda
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA; Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Andrew Kuykendall
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Chetasi Talati
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Kendra L Sweet
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - David A Sallman
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Jeffrey E Lancet
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Rami S Komrokji
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA
| | - Eric Padron
- Malignant Hematology Department, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL, USA.
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13
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Karantanos T, Gondek LP, Varadhan R, Moliterno AR, DeZern AE, Jones RJ, Jain T. Gender-related differences in the outcomes and genomic landscape of patients with myelodysplastic syndrome/myeloproliferative neoplasm overlap syndromes. Br J Haematol 2021; 193:1142-1150. [PMID: 34028801 PMCID: PMC8217263 DOI: 10.1111/bjh.17534] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 04/10/2021] [Indexed: 11/28/2022]
Abstract
Myelodysplastic syndrome/myeloproliferative neoplasm (MDS/MPN) overlap syndromes show a male predominance and men with MDS/MPN have worse outcomes, but it is unknown if the mutational burden differs between genders. We reviewed 167 patients with MDS/MPN and found that men had worse overall survival [hazard ratio (HR) 2·09, 95% confidence interval (CI) 1·16-3·75; P = 0·013] independent of subtype, Revised International Prognostic Scoring System score and age at diagnosis. We analysed the genomic data of a subset of 100 patients. Men had 0·88 more somatic mutations on average (95% CI 0·20-1·56, P = 0·011) independent of subtype, sample source and blast percentage. More somatic mutations was associated with a higher incidence of transformation to acute myeloid leukaemia (subdistribution HR 1·30, 95% CI 1·01-1·70; P = 0·046). Men had 0·70 more mutations in high-risk genes [additional sex combs like-1 (ASXL1), enhancer of zeste homolog 2 (EZH2), Runt-related transcription factor 1 (RUNX1), SET binding protein 1 (SETBP1), NRAS proto-oncogene, GTPase (NRAS), stromal antigen 2 (STAG2)] on average (95% CI 0·11-1·29, P = 0·021), and 13-times higher odds of harbouring an EZH2 mutation (95% CI 1·64-102·94, P = 0·015). The presence of an EZH2 mutation was associated with worse survival among men (HR 2·98, 95% CI 1·1-8·0; P = 0·031). Our present findings suggest that the worse outcomes in men with MDS/MPN are associated with a higher number of somatic mutations, especially in high-risk genes. These results warrant validation in larger cohorts and investigation of the underlying mechanisms.
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Affiliation(s)
- Theodoros Karantanos
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore MD
| | - Lukasz P. Gondek
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore MD
| | - Ravi Varadhan
- Division of Biostatistics and Bioinformatics, Johns Hopkins/Sidney Kimmel Comprehensive Cancer Center, Baltimore, MD
| | - Alison R. Moliterno
- Division of Adult Hematology, Department of Medicine, Johns Hopkins University, Baltimore MD
| | - Amy E. DeZern
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore MD
| | - Richard J Jones
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore MD
| | - Tania Jain
- Division of Hematological Malignancies and Bone Marrow Transplantation, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore MD
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14
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The potential of proliferative and apoptotic parameters in clinical flow cytometry of myeloid malignancies. Blood Adv 2021; 5:2040-2052. [PMID: 33847740 DOI: 10.1182/bloodadvances.2020004094] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/22/2021] [Indexed: 11/20/2022] Open
Abstract
Standardization of the detection and quantification of leukocyte differentiation markers by the EuroFlow Consortium has led to a major step forward in the integration of flow cytometry into classification of leukemia and lymphoma. In our opinion, this now enables introduction of markers for more dynamic parameters, such as proliferative and (anti)apoptotic markers, which have proven their value in the field of histopathology in the diagnostic process of solid tumors and lymphoma. Although use of proliferative and (anti)apoptotic markers as objective parameters in the diagnostic process of myeloid malignancies was studied in the past decades, this did not result in the incorporation of these biomarkers into clinical diagnosis. This review addresses the potential of these markers for implementation in the current, state-of-the-art multiparameter analysis of myeloid malignancies. The reviewed studies clearly recognize the importance of proliferation and apoptotic mechanisms in the pathogenesis of bone marrow (BM) malignancies. The literature is, however, contradictory on the role of these processes in myelodysplastic syndrome (MDS), MDS/myeloproliferative neoplasms, and acute myeloid leukemia. Furthermore, several studies underline the need for the analysis of the proliferative and apoptotic rates in subsets of hematopoietic BM cell lineages and argue that these results can have diagnostic and prognostic value in patients with myeloid malignancies. Recent developments in multiparameter flow cytometry now allow quantification of proliferative and (anti)apoptotic indicators in myeloid cells during their different maturation stages of separate hematopoietic cell lineages. This will lead to a better understanding of the biology and pathogenesis of these malignancies.
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15
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Chang YH. Myelodysplastic syndromes and overlap syndromes. Blood Res 2021; 56:S51-S64. [PMID: 33935036 PMCID: PMC8094000 DOI: 10.5045/br.2021.2021010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 03/09/2021] [Accepted: 03/10/2021] [Indexed: 12/11/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are a heterogeneous group of clonal hematological neoplasms characterized by ineffective hematopoiesis, morphologic dysplasia, and cytopenia. MDS overlap syndromes include various disorders, such as myelodysplastic/myeloproliferative neoplasms and hypoplastic MDS with aplastic anemia characteristics. MDS overlap syndromes share the characteristics of other diseases, which make differential diagnoses challenging. Advances in genomic studies have led to the discovery of frequent mutations in MDS and overlap syndromes; however, most of the mutations are not specific for the diagnosis of these diseases. The molecular characteristics of the overlap syndromes usually do not show a just "in-between" form but rather heterogeneous features. Established diagnostic criteria for these diseases based on clinical, morphologic, and laboratory features are still useful when combined with genomic data. It is expected that further studies for MDS and overlap syndromes will place emphasis on the roles of mutations as therapeutic targets and prognostic indicators.
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Affiliation(s)
- Yoon Hwan Chang
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul, Korea
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16
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Ramos Perez J, Montalban-Bravo G. Emerging drugs for the treatment of chronic myelomonocytic leukemia. Expert Opin Emerg Drugs 2020; 25:515-529. [PMID: 33280448 DOI: 10.1080/14728214.2020.1854224] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Introduction: Chronic myelomonocytic leukemia (CMML) is a clonal hematologic disorder with heterogenous prognosis, but with no curative therapies with exception of allogeneic transplant. Therapeutic options for patients with CMML are limited, and although hypomethylating agents such as azacitidine and decitabine are the standard of care, only 40% of patients achieve a response, and most responses are transient. Over the last 5 years, significant advances have been made in the understanding of the clonal landscape of CMML, some of the mechanisms associated to resistance to HMA, and other key biological processes involved in disease pathogenesis. Areas covered: The current article reviews the most relevant emerging therapies currently undergoing clinical trials for the treatment of previously untreated or relapsed CMML. Expert opinion: The presence of recurrent somatic mutations in CMML represents therapeutic opportunities to utilize specific small molecule inhibitors such as IDH, FLT3, MEK/ERK, PLK1, or splicing inhibitors and modulators. In addition, other novel agents such as immune therapies, BCL2 or MCL1 inhibitors and other monoclonal antibodies could lead to therapeutic advances. Identifying specific patient populations likely to benefit from some of these interventions, and development of optimal combinations will remain the challenge when determining their role in therapy.
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Affiliation(s)
- Jorge Ramos Perez
- Department of Leukemia, The University of Texas MD Anderson Cancer Center , Houston, TX, USA
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17
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Efficacy of ruxolitinib in a patient with myelodysplastic/myeloproliferative neoplasm unclassifiable and co-mutated JAK2, SF3B1 and TP53. Leuk Res Rep 2020; 14:100229. [PMID: 33194542 PMCID: PMC7645062 DOI: 10.1016/j.lrr.2020.100229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 10/05/2020] [Accepted: 10/28/2020] [Indexed: 11/24/2022] Open
Abstract
Myelodysplastic/myeloproliferative neoplasm, unclassifiable (MDS/MPN-U) is a rare but heterogeneous subtype of MDS/MPN, with no specific genetic alterations and standard treatments. ASXL1, SRSF2, TET2, JAK2 and NRAS are commonly mutated in MDS/MPN-U. Double gene mutations could be detected in MDS/MPN-U, however, co-mutations of 3 and more genes in this disease entity are very rare. Here, we present a case of MDS/MPN-U with triple mutations involving JAK2, SF3B1, and TP53. After failure of traditional therapy including hydroxyurea and interferon-α, the patient received ruxolitinib monotherapy and achieved hematological response quickly. Though mutations in TP53 implied a poor prognosis in myeloid malignancies, this patient has maintained no AML transformation for 26 months since diagnosis. Further research on complex mutations in the pathogenesis and prognosis of MDS/MPN-U is warranted.
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18
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Hunter AM, Padron E. Molecular genetics of MDS/MPN overlap syndromes. Best Pract Res Clin Haematol 2020; 33:101195. [DOI: 10.1016/j.beha.2020.101195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 05/27/2020] [Indexed: 01/05/2023]
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19
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Gao T, Yu C, Xia S, Liang T, Gu X, Liu Z. A rare atypical chronic myeloid leukemia BCR-ABL1 negative with concomitant JAK2 V617F and SETBP1 mutations: a case report and literature review. Ther Adv Hematol 2020; 11:2040620720927105. [PMID: 32782768 PMCID: PMC7388081 DOI: 10.1177/2040620720927105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 04/09/2020] [Indexed: 12/20/2022] Open
Abstract
Atypical chronic myeloid leukemia (aCML) BCR-ABL1 negative is a rare
myelodysplastic syndromes/myeloproliferative neoplasm (MDS/MPN) for which no
standard treatment currently exists. The advent of next-generation sequencing
has allowed our understanding of the molecular pathogenesis of aCML to be
expanded and has made it possible for clinicians to more accurately
differentiate aCML from similar MDS/MPN overlap syndrome and MPN counterparts,
as MPN-associated driver mutations in JAK2, CALR, or
MPL are typically absent in aCML. A 55-year old male with
main complaints of weight loss and fatigue for more than half a year and night
sweats for more than 2 months was admitted to our hospital. Further examination
revealed increased white blood cells, splenomegaly, and grade 1 bone marrow
fibrosis with JAK2 V617F, which supported a preliminary
diagnosis of pre-primary marrow fibrosis. However, in addition to
JAK2 V617F (51.00%), next-generation sequencing also
detected SETBP1 D868N (46.00%), ASXL1 G645fs
(36.09%), and SRSF2 P95_R102del (33.56%) mutations. According
to the 2016 World Health Organization diagnostic criteria, the patient was
ultimately diagnosed with rare aCML with concomitant JAK2 V617F
and SETBP1 mutations. The patient received targeted therapy of
ruxolitinib for 5 months and subsequently an additional four courses of combined
hypomethylating therapy. The patient exhibited an optimal response, with
decreased spleen volume by approximately 35% after therapy and improved symptom
scores after therapy. In diagnosing primary bone marrow fibrosis, attention
should be paid to the identification of MDS/MPN. In addition to basic cell
morphology, mutational analysis using next-generation sequencing plays an
increasingly important role in the differential diagnosis. aCML with concomitant
JAK2 V617F and SETBP1 mutations has been
rarely reported, and targeted therapy for mutated JAK2 may
benefit patients, especially those not suitable recipients of hematopoietic stem
cell transplants.
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Affiliation(s)
- Tianqi Gao
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Changhui Yu
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Si Xia
- Department of Hematology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ting Liang
- First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xuekui Gu
- Department of Hematology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zenghui Liu
- Department of Hematology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, No 16, Jichang Road, Guangzhou, Guangdong Province 510405, PR China
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20
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Higgins A, Shah MV. Genetic and Genomic Landscape of Secondary and Therapy-Related Acute Myeloid Leukemia. Genes (Basel) 2020; 11:E749. [PMID: 32640569 PMCID: PMC7397259 DOI: 10.3390/genes11070749] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 12/22/2022] Open
Abstract
A subset of acute myeloid leukemia (AML) arises either from an antecedent myeloid malignancy (secondary AML, sAML) or as a complication of DNA-damaging therapy for other cancers (therapy-related myeloid neoplasm, t-MN). These secondary leukemias have unique biological and clinical features that distinguish them from de novo AML. Over the last decade, molecular techniques have unraveled the complex subclonal architecture of sAML and t-MN. In this review, we compare and contrast biological and clinical features of de novo AML with sAML and t-MN. We discuss the role of genetic mutations, including those involved in RNA splicing, epigenetic modification, tumor suppression, transcription regulation, and cell signaling, in the pathogenesis of secondary leukemia. We also discuss clonal hematopoiesis in otherwise healthy individuals, as well as in the context of another malignancy, and how it challenges the conventional notion of sAML/t-MN. We conclude by summarizing the current and emerging treatment strategies, including allogenic transplant, in these complex scenarios.
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21
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Elmariah H, DeZern AE. Chronic Myelomonocytic Leukemia: 2018 Update to Prognosis and Treatment. Curr Hematol Malig Rep 2020; 14:154-163. [PMID: 31093889 DOI: 10.1007/s11899-019-00509-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE OF REVIEW Chronic myelomonocytic leukemia (CMML) is a rare and often aggressive myeloid malignancy. Historically, prognostic markers and therapeutic paradigms have been applied from myelodysplastic syndromes (MDS) or myeloproliferative neoplasms (MPNs). Interest has increased recently in developing tailored approaches for the MDS/MPN overlap syndrome of CMML. RECENT FINDINGS Multiple prognostic scores have been validated specifically for CMML in the past 5 years. These incorporate somatic mutations, with ASXL1 mutations repeatedly correlating with poor prognosis. Accurate prognostication can guide treatment. Hypomethylating agents (HMAs) and curative allogeneic blood or marrow transplantation (BMT) remain the most available standard treatments. Recently, a number of novel approaches using unapproved therapies (i.e., lenalidomide, ruxolitinib, sotatercept, and tipifarnib) have demonstrated some efficacy in CMML. Increased recognition and interest in CMML have led to the development of a number of new prognostic models and potential treatment options. Standard treatment options remain limited and clinical trials should be strongly considered whenever available.
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Affiliation(s)
- Hany Elmariah
- Department of Blood and Marrow Transplantation and Cellular Immunotherapy, H. Lee Moffitt Cancer Center, Tampa, FL, USA
| | - Amy E DeZern
- Division of Hematologic Malignancies, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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22
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Invariant phenotype and molecular association of biallelic TET2 mutant myeloid neoplasia. Blood Adv 2020; 3:339-349. [PMID: 30709865 DOI: 10.1182/bloodadvances.2018024216] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 12/12/2018] [Indexed: 12/29/2022] Open
Abstract
Somatic TET2 mutations (TET2 MT) are frequent in myeloid neoplasia (MN), particularly chronic myelomonocytic leukemia (CMML). TET2 MT includes mostly loss-of-function/hypomorphic hits. Impaired TET2 activity skews differentiation of hematopoietic stem cells toward proliferating myeloid precursors. This study was prompted by the observation of frequent biallelic TET2 gene inactivations (biTET2 i ) in CMML. We speculated that biTET2 i might be associated with distinct clinicohematological features. We analyzed TET2 MT in 1045 patients with MN. Of 82 biTET2 i cases, 66 were biTET2 MT, 13 were hemizygous TET2 MT, and 3 were homozygous TET2 MT (uniparental disomy); the remaining patients (denoted biTET2 - hereafter) were either monoallelic TET2 MT (n = 96) or wild-type TET2 (n = 823). Truncation mutations were found in 83% of biTET2 i vs 65% of biTET2 - cases (P = .02). TET2 hits were founder lesions in 72% of biTET2 i vs 38% of biTET2 - cases (P < .0001). In biTET2 i , significantly concurrent hits included SRSF2 MT (33%; P < .0001) and KRAS/NRAS MT (16%; P = .03) as compared with biTET2 - When the first TET2 hit was ancestral in biTET2 i , the most common subsequent hits affected a second TET2 MT, followed by SRSF2 MT, ASXL1 MT, RAS MT, and DNMT3A MT BiTET2 i patients without any monocytosis showed an absence of SRSF2 MT BiTET2 i patients were older and had monocytosis, CMML, normal karyotypes, and lower-risk disease compared with biTET2 - patients. Hence, while a second TET2 hit occurred frequently, biTET2 i did not portend faster progression but rather determined monocytic differentiation, consistent with its prevalence in CMML. Additionally, biTET2 i showed lower odds of cytopenias and marrow blasts (≥5%) and higher odds of myeloid dysplasia and marrow hypercellularity. Thus, biTET2 i might represent an auxiliary assessment tool in MN.
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23
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Oh YJ, Shin DY, Hwang SM, Kim SM, Im K, Park HS, Kim JA, Song YW, Márquez A, Martín J, Lee DS, Park JK. Mutation of ten-eleven translocation-2 is associated with increased risk of autoimmune disease in patients with myelodysplastic syndrome. Korean J Intern Med 2020; 35:457-464. [PMID: 31640337 PMCID: PMC7061008 DOI: 10.3904/kjim.2018.247] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Accepted: 01/06/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND/AIMS Myelodysplastic syndrome (MDS) is caused by genetic and epigenetic alteration of hematopoietic precursors and immune dysregulation. Approximately 20% of patients with MDS develop an autoimmune disease (AID). Here, we investigated whether particular genetic mutations are associated with AID in patients with MDS. METHODS Eighty-eight genetic mutations associated with myeloid malignancy were sequenced in 73 MDS patients. The association between these mutations and AID was then analyzed. RESULTS The median age of the 73 MDS patients was 70 years (interquartile range, 56 to 75), and 49 (67.1%) were male. AID was observed in 16 of 73 patients (21.9%). Mutations were detected in 57 (78.1%) patients. The percentage (68.8% vs. 80.7%, p = 0.32) and the mean number of mutations (1.8 ± 1.6 vs. 2.2 ± 1.8, p = 0.34) in MDS patients with or without AID were similar. However, the ten-eleven translocation- 2 (TET2) mutation rate was significantly higher in patients with AID than in those without (31.3% vs. 5.3%, respectively; p = 0.001). All TET2 mutations were variants of strong clinical significance. CONCLUSION Mutation of TET2 in patients with MDS may be associated with increased risk of developing AID.
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Affiliation(s)
- Yoon-Jeong Oh
- Division of Rheumatology, Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Dong-Yeop Shin
- Division of Hematology and Medical Oncology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Sang Mee Hwang
- Department of Laboratory Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Sung-Min Kim
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Kyongok Im
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hee Sue Park
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jung-Ah Kim
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Yeong Wook Song
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ana Márquez
- Instituto de Parasitología y Biomedicina “López-Neyra”, CSIC, Granada, Spain
| | - Javier Martín
- Instituto de Parasitología y Biomedicina “López-Neyra”, CSIC, Granada, Spain
| | - Dong-Soon Lee
- Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
- Dong-Soon Lee, M.D. Department of Laboratory Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 03080, Korea Tel: +82-2-2072-3986, Fax: +82-2-747-0359, E-mail:
| | - Jin Kyun Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
- Correspondence to Jin Kyun Park, M.D. Department of Internal Medicine, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea Tel: +82-2-2072-4765, Fax: +82-2-762-9662, E-mail:
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24
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Garza J, Anderson JM, Scherber RM. Assessing Symptom Burden in Myelodysplastic Syndrome/Myeloproliferative Neoplasm Overlap Patients. Hematol Oncol Clin North Am 2020; 34:475-489. [PMID: 32089224 DOI: 10.1016/j.hoc.2019.11.001] [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: 10/25/2022]
Abstract
Myelodysplastic syndrome/myeloproliferative neoplasm overlap syndromes are rare types of chronic myeloid hematologic neoplasms. Patients with overlap syndrome have similar clinical features, mutations, and disease course, to other chronic myeloid malignancies. Limited data also suggests that overlap syndromes patients experience long standing and at times poorly controlled symptoms that may be underrecognized. In this article, we discuss the etiologies of symptoms in patients with overlap syndromes and currently available symptom burden assessment tools. Overall, symptom burden is an important consideration in patients with overlap syndrome, and efforts are ongoing to further investigate symptom burden and quality of life in this population.
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Affiliation(s)
- Juan Garza
- Department of Hematology and Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA
| | - Jane Margret Anderson
- Department of Hematology and Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA
| | - Robyn M Scherber
- Department of Hematology and Oncology, Mays Cancer Center at UT Health San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229, USA.
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25
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Aguilera-Diaz A, Vazquez I, Ariceta B, Mañú A, Blasco-Iturri Z, Palomino-Echeverría S, Larrayoz MJ, García-Sanz R, Prieto-Conde MI, del Carmen Chillón M, Alfonso-Pierola A, Prosper F, Fernandez-Mercado M, Calasanz MJ. Assessment of the clinical utility of four NGS panels in myeloid malignancies. Suggestions for NGS panel choice or design. PLoS One 2020; 15:e0227986. [PMID: 31978184 PMCID: PMC6980571 DOI: 10.1371/journal.pone.0227986] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 01/04/2020] [Indexed: 12/17/2022] Open
Abstract
The diagnosis of myeloid neoplasms (MN) has significantly evolved through the last few decades. Next Generation Sequencing (NGS) is gradually becoming an essential tool to help clinicians with disease management. To this end, most specialized genetic laboratories have implemented NGS panels targeting a number of different genes relevant to MN. The aim of the present study is to evaluate the performance of four different targeted NGS gene panels based on their technical features and clinical utility. A total of 32 patient bone marrow samples were accrued and sequenced with 3 commercially available panels and 1 custom panel. Variants were classified by two geneticists based on their clinical relevance in MN. There was a difference in panel’s depth of coverage. We found 11 discordant clinically relevant variants between panels, with a trend to miss long insertions. Our data show that there is a high risk of finding different mutations depending on the panel of choice, due both to the panel design and the data analysis method. Of note, CEBPA, CALR and FLT3 genes, remains challenging the use of NGS for diagnosis of MN in compliance with current guidelines. Therefore, conventional molecular testing might need to be kept in place for the correct diagnosis of MN for now.
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Affiliation(s)
- Almudena Aguilera-Diaz
- Advanced Genomics Laboratory, Hemato-Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
| | - Iria Vazquez
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
| | - Beñat Ariceta
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
| | - Amagoia Mañú
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
| | - Zuriñe Blasco-Iturri
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
| | | | - María José Larrayoz
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
| | - Ramón García-Sanz
- Hematology Department, University Hospital of Salamanca, IBSAL and CIBERONC, Salamanca, Spain
| | | | | | - Ana Alfonso-Pierola
- Hematology Department, Clinica Universidad de Navarra (CUN), Pamplona, Spain
| | - Felipe Prosper
- Advanced Genomics Laboratory, Hemato-Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
- Hematology Department, Clinica Universidad de Navarra (CUN), Pamplona, Spain
| | - Marta Fernandez-Mercado
- Advanced Genomics Laboratory, Hemato-Oncology, Center for Applied Medical Research (CIMA), University of Navarra, Pamplona, Spain
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
- Biomedical Engineering Department, School of Engineering, University of Navarra, San Sebastian, Spain
- * E-mail: ,
| | - María José Calasanz
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
- Hematological Diseases Laboratory, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
- Scientific Co-Director of CIMA LAB Diagnostics, CIMA LAB Diagnostics, University of Navarra, Pamplona, Spain
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26
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Chronic Myeloid Neoplasms. Genomic Med 2020. [DOI: 10.1007/978-3-030-22922-1_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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27
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Sangiorgio VFI, Orazi A, Arber DA. Myelodysplastic/myeloproliferative neoplasms: are morphology and immunophenotyping still relevant? Best Pract Res Clin Haematol 2019; 33:101139. [PMID: 32460987 DOI: 10.1016/j.beha.2019.101139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Accepted: 12/23/2019] [Indexed: 01/16/2023]
Abstract
The term myelodysplastic/myeloproliferative neoplasm (MDS/MPN) refers to a group of clonal hematopoietic neoplasms with overlapping clinical, morphologic and genetic myelodysplastic and myeloproliferative features observed at the time of first presentation. Impaired hematopoiesis morphologically associated with evidence of myelodysplasia manifests clinically with cytopenia/s. Simultaneously, myeloproliferation is seen within the bone marrow and leads to cytosis in the peripheral blood. The diagnostic category of MDS/MPN encompasses a heterogeneous group of diseases which share similarities among them, but at the same time have distinct clinical and pathologic features and eventually diverse prognosis; such differences justify their separation in a classification scheme. In the era of genetic and genomic tests, their distinction from conventional myelodysplastic syndromes or myeloproliferative neoplasms still relies on close clinocopathological correlation, with evaluation of both peripheral blood and bone marrow samples being essential in this sense. A multiparametric integration of clinicopathologic data and cytogenetics and molecular genetics results is the preferred diagnostic approach.
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Affiliation(s)
- V F I Sangiorgio
- Department of Cellular Pathology, The Royal London Hospital, London, UK
| | - A Orazi
- Department of Pathology, Paul L. Foster School of Medicine, Texas Tech University Health Sciences Center, El Paso, TX, USA
| | - D A Arber
- Department of Pathology, University of Chicago, Chicago, IL, USA.
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28
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Lasho T. Atypical CML- the role of morphology and precision genomics. Best Pract Res Clin Haematol 2019; 33:101133. [PMID: 32460981 DOI: 10.1016/j.beha.2019.101133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 12/03/2019] [Indexed: 12/20/2022]
Abstract
Atypical chronic myeloid leukemia is an esoteric myeloid malignancy with features of both myeloproliferative and myelodysplastic syndromes. This disease is characterized primarily by morphologic-based criteria, and has clinical and molecular features overlapping with other myeloid malignancies. No one molecular abnormality is specific, and multiple mutations are often present in various combinations, due to the malignant multi-step clonal evolution of myeloid malignancies. In this review, we will address what we know about atypical chronic myeloid leukemia; evaluate how the molecular landscape in myeloid malignancies overlaps, and discuss what we can learn by incorporating individualized precision genomic strategies.
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Affiliation(s)
- Terra Lasho
- Division of Hematology, Mayo Clinic Rochester, USA.
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29
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Zhu J, Sourdeau E, Aubert H, Clauser S, Maillon A, Capron C, Jondeau K, Ronez E, Schillinger F, Garnache-Ottou F, Cornet E, Bardet V. A hierarchical approach in the diagnostic workflow of chronic myelomonocytic leukemia: Pivotal role of the "Mono-dysplasia-score" combined with flow cytometric quantification of monocyte subsets. Int J Lab Hematol 2019; 41:782-790. [PMID: 31647610 PMCID: PMC6916376 DOI: 10.1111/ijlh.13115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 09/06/2019] [Accepted: 09/13/2019] [Indexed: 12/21/2022]
Abstract
Introduction Monocytosis is a frequent trigger for blood smear review in a routine hematology laboratory whereas chronic myelomonocytic leukemia (CMML) is infrequent and arises mostly in elderly patients. In order to define the best workflow for monocytosis, we studied three diagnostic approaches: the classical morphology approach (blood smear review), the flow cytometry assay (quantification of monocyte subsets as described by Selimoglu‐Buet et al in 2015), and the “mono‐dysplasia‐score” also referred to as “Monoscore (as described by our team in 2018 using the structural parameters of the Sysmex XN™ analyzers). Methods Studying a multicentric cohort of 196 nonclonal monocytoses and CMML patients aged over 50 years, we compared the diagnostic performance of the three approaches alone and in combination to propose a diagnostic decision tree. Results In patients presenting with additional criteria for slide review to monocytosis (37% of our cohort), we propose to sequentially combine morphology, Monoscore, and flow cytometry. On the contrary, for patients with isolated monocytosis (63%), slide review is not mandatory and we suggest performing flow cytometry depending on the Monoscore value. Using the proposed algorithm, 98% of CMML patients would have been correctly identified, slide review rate drastically reduced, and flow cytometry would have been carried out in 44% of patients. Conclusion We have shown that implementation of Monoscore is a useful input filter to significantly reduce slide reviews without losing sensitivity and that flow cytometry is a performant technique in the second step of the diagnostic workup of CMML.
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Affiliation(s)
- Jaja Zhu
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Elise Sourdeau
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Honorine Aubert
- Laboratoire d'Hématologie, UNICAEN, CHU de Caen Normandie, Normandie University, Caen, France
| | - Sylvain Clauser
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Agathe Maillon
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Claude Capron
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Katayoun Jondeau
- Unité fonctionnelle d'Hématologie, Service de Médecine Interne, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Emily Ronez
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
| | - Francoise Schillinger
- Laboratoire d'Hématologie, Etablissement Français du Sang de Bourgogne/Franche-Comté, Besançon, France
| | - Francine Garnache-Ottou
- Laboratoire d'Hématologie, Etablissement Français du Sang de Bourgogne/Franche-Comté, Besançon, France
| | - Edouard Cornet
- Laboratoire d'Hématologie, UNICAEN, CHU de Caen Normandie, INSERM U1245, Normandie University, Caen, France
| | - Valérie Bardet
- Service d'Hématologie-Immunologie-Transfusion, Hôpitaux Universitaires Paris Ile De France Ouest, Université Versailles Saint Quentin, Boulogne, France
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30
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Zhang H, Wilmot B, Bottomly D, Dao KHT, Stevens E, Eide CA, Khanna V, Rofelty A, Savage S, Reister Schultz A, Long N, White L, Carlos A, Henson R, Lin C, Searles R, Collins RH, DeAngelo DJ, Deininger MW, Dunn T, Hein T, Luskin MR, Medeiros BC, Oh ST, Pollyea DA, Steensma DP, Stone RM, Druker BJ, McWeeney SK, Maxson JE, Gotlib JR, Tyner JW. Genomic landscape of neutrophilic leukemias of ambiguous diagnosis. Blood 2019; 134:867-879. [PMID: 31366621 PMCID: PMC6742922 DOI: 10.1182/blood.2019000611] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/27/2019] [Indexed: 12/12/2022] Open
Abstract
Chronic neutrophilic leukemia (CNL), atypical chronic myeloid leukemia (aCML), and myelodysplastic/myeloproliferative neoplasms, unclassifiable (MDS/MPN-U) are a group of rare and heterogeneous myeloid disorders. There is strong morphologic resemblance among these distinct diagnostic entities as well as a lack of specific molecular markers and limited understanding of disease pathogenesis, which has made diagnosis challenging in certain cases. The treatment has remained empirical, resulting in dismal outcomes. We, therefore, performed whole-exome and RNA sequencing of these rare hematologic malignancies and present the most complete survey of the genomic landscape of these diseases to date. We observed a diversity of combinatorial mutational patterns that generally do not cluster within any one diagnosis. Gene expression analysis reveals enrichment, but not cosegregation, of clinical and genetic disease features with transcriptional clusters. In conclusion, these groups of diseases represent a continuum of related diseases rather than discrete diagnostic entities.
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Affiliation(s)
- Haijiao Zhang
- Department of Cell, Developmental and Cancer Biology
- Division of Hematology and Medical Oncology, and
| | - Beth Wilmot
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR
| | - Daniel Bottomly
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR
| | | | - Emily Stevens
- Fred Hutchinson Cancer Research Institute, Washington University School of Medicine, Seattle, WA
| | - Christopher A Eide
- Division of Hematology and Medical Oncology, and
- Howard Hughes Medical Institute, Chevy Chase, MD
| | - Vishesh Khanna
- Division of Hematology and Medical Oncology, and
- Howard Hughes Medical Institute, Chevy Chase, MD
| | - Angela Rofelty
- Department of Cell, Developmental and Cancer Biology
- Division of Hematology and Medical Oncology, and
| | - Samantha Savage
- Department of Cell, Developmental and Cancer Biology
- Division of Hematology and Medical Oncology, and
| | - Anna Reister Schultz
- Department of Cell, Developmental and Cancer Biology
- Division of Hematology and Medical Oncology, and
| | - Nicola Long
- Department of Cell, Developmental and Cancer Biology
- Division of Hematology and Medical Oncology, and
| | - Libbey White
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR
| | - Amy Carlos
- Integrated Genomics Laboratories, Oregon Health & Science University, Portland, OR
| | - Rachel Henson
- Integrated Genomics Laboratories, Oregon Health & Science University, Portland, OR
| | - Chenwei Lin
- Integrated Genomics Laboratories, Oregon Health & Science University, Portland, OR
| | - Robert Searles
- Integrated Genomics Laboratories, Oregon Health & Science University, Portland, OR
| | - Robert H Collins
- Hematology/Oncology, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | - Daniel J DeAngelo
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | | | - Tamara Dunn
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Than Hein
- Huntsman Cancer Institute, University of Utah, Salt Lake City, UT
| | - Marlise R Luskin
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Bruno C Medeiros
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Stephen T Oh
- Hematology Division, Department of Medicine, Washington University School of Medicine, Washington University in St. Louis, St. Louis, MO; and
| | - Daniel A Pollyea
- Division of Hematology, Oncology, and Bone Marrow Transplantation, University of Colorado School of Medicine, Aurora, CO
| | - David P Steensma
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Richard M Stone
- Department of Medical Oncology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA
| | - Brian J Druker
- Division of Hematology and Medical Oncology, and
- Howard Hughes Medical Institute, Chevy Chase, MD
| | - Shannon K McWeeney
- Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR
| | | | - Jason R Gotlib
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA
| | - Jeffrey W Tyner
- Department of Cell, Developmental and Cancer Biology
- Division of Hematology and Medical Oncology, and
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31
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Loghavi S, Wang SA. Defining the Boundary Between Myelodysplastic Syndromes and Myeloproliferative Neoplasms. Surg Pathol Clin 2019; 12:651-669. [PMID: 31352979 DOI: 10.1016/j.path.2019.03.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this article we provide a practical and comprehensive review of myeloid neoplasms with overlapping myelodysplastic (MDS) and myeloproliferative (MPN) features, with emphasis on recent updates in classification, particularly the utility of morphologic, cytogenetic, and molecular findings in better defining and classifying these disease entities. We provide the reader with a summary of the most recent developments and updates that have helped further our understanding of the genomic landscape, clinicopathologic features, and prognostic elements of myeloid neoplasms with MDS/MPN features.
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Affiliation(s)
- Sanam Loghavi
- Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA
| | - Sa A Wang
- Department of Hematopathology, The University of Texas, MD Anderson Cancer Center, Houston, TX, USA.
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32
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Hasserjian RP, Kelley TW, Weinberg OK, Morgan EA, Fend F. Genetic Testing in the Diagnosis and Biology of Myeloid Neoplasms (Excluding Acute Leukemias). Am J Clin Pathol 2019; 152:302-321. [PMID: 31263893 DOI: 10.1093/ajcp/aqz069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES The 2017 Workshop of the Society for Hematopathology/European Association for Haematopathology reviewed the role of genetic testing in the diagnosis of hematopoietic neoplasms, including non-acute leukemia myeloid malignancies. METHODS The workshop panel assigned 98 submitted cases to the category of non-acute leukemia myeloid neoplasms, of which 13 were selected for oral presentation. RESULTS Data from both conventional karyotyping and genetic sequencing had important impact on diagnosis, classification, and prognostication. However, some cases had genetic results that appeared discordant from the morphology and/or clinical features. Thus, the workshop underscored the need for careful management of genetic data by the pathologist and clinician, in the context of other findings. CONCLUSIONS The workshop cases highlighted the significance of genetic aberrations in the diagnosis and treatment of non-acute leukemia myeloid neoplasms. Many genetic data have already been incorporated in the most recent World Health Organization classification, and undoubtedly they will factor increasingly in future classifications.
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Affiliation(s)
| | | | - Olga K Weinberg
- Department of Pathology, Boston Children’s Hospital, Boston, MA
| | | | - Falko Fend
- Department of Pathology and Neuropathology
- Comprehensive Cancer Care, University of Tübingen, Tübingen, Germany
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33
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Meggendorfer M, Jeromin S, Haferlach C, Kern W, Haferlach T. The mutational landscape of 18 investigated genes clearly separates four subtypes of myelodysplastic/myeloproliferative neoplasms. Haematologica 2019; 103:e192-e195. [PMID: 29700173 DOI: 10.3324/haematol.2017.183160] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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34
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DeZern AE, Malcovati L, Ebert BL. CHIP, CCUS, and Other Acronyms: Definition, Implications, and Impact on Practice. Am Soc Clin Oncol Educ Book 2019; 39:400-410. [PMID: 31099654 DOI: 10.1200/edbk_239083] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Unexplained blood cytopenias can be a clinical challenge for patients and clinicians alike. The relationship between these cytopenias and myeloid neoplasms like myelodysplastic syndromes (MDS) is currently an area of active research. There have been marked developments in our understanding of clonal hematopoiesis based on findings of somatic mutations in genes known to be associated with MDS. This has led to newer terms to describe precursor states to MDS, such as clonal hematopoiesis of indeterminate potential (CHIP) and clonal cytopenia of undetermined significance (CCUS). These conditions may allow earlier diagnosis, modify surveillance for MDS, and guide additional therapies. This review summarizes recent updates in the field for affected patients.
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Affiliation(s)
- Amy E DeZern
- 1 Division of Hematologic Malignancies, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Luca Malcovati
- 2 Department of Molecular Medicine, University of Pavia, and Department of Hematology Oncology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Benjamin L Ebert
- 3 Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA
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MDS overlap disorders and diagnostic boundaries. Blood 2019; 133:1086-1095. [PMID: 30670443 DOI: 10.1182/blood-2018-10-844670] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 12/11/2018] [Indexed: 12/13/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are clonal diseases defined by clinical, morphologic, and genetic features often shared by related myeloid disorders. The diagnostic boundaries between these diseases can be arbitrary and not necessarily reflective of underlying disease biology or outcomes. In practice, measures that distinguish MDS from related disorders may be difficult to quantify and can vary as disease progression occurs. Patients may harbor findings that are not consistent with a single diagnostic category. Several overlap disorders have been formally described, such as the myelodysplastic/myeloproliferative neoplasms (MDS/MPNs). These disorders are characterized by hematopoietic dysplasia with increased proliferation of monocytes, neutrophils, or platelets. They may have mutational profiles that distinguish them from the disorders they resemble and reflect important differences in pathophysiology. MDS also shares diagnostic borders with other diseases. For example, aplastic anemia and hypoplastic MDS can be difficult to distinguish in patients with pancytopenia and bone marrow hypocellularity. Genetic features may help in this regard, because they can identify differences in prognosis and risk of progression. The boundary between MDS and secondary acute myeloid leukemia (sAML) is arbitrarily defined and has been redefined over the years. Genetic studies have demonstrated that sAML clones can precede clinical progression from MDS by many months, suggesting that MDS with excess blasts could be viewed as an overlap between a dysplastic bone marrow failure syndrome and an oligoblastic leukemia. This review will describe the diagnostic boundaries between MDS, MDS/MPNs, sAML, clonal hematopoiesis of indeterminate potential, clonal cytopenia of undetermined significance, and aplastic anemia and how genetic approaches may help to better define them.
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Smith BN, Savona M, Komrokji RS. Challenges in Myelodysplastic/Myeloproliferative Neoplasms (MDS/MPN). CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2019; 19:1-8. [PMID: 30555034 PMCID: PMC7493410 DOI: 10.1016/j.clml.2018.11.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 11/19/2018] [Indexed: 12/26/2022]
Abstract
Myelodysplastic/myeloproliferative neoplasms (MDS/MPN) are hybrid group of chronic myeloid neoplasms combining features of both MDS and MPN. The World Health Organization classification coined this group designation in 2008 to include chronic myelomonocytic leukemia, atypical chronic myeloid leukemia, juvenile myelomoncoytic leukemia, refractory anemia with ring sideroblasts and thrombocytosis as a provisional entity, and MDS/MPN unclassified. In this review, we highlight the challenges in diagnosing this group of the diseases, summarize the updates in classification, and discuss recent evolving understanding of the genetic landscape. We review risk-stratification models and overview the current management largely adapted from current MDS or MPN therapies. We define clinical benefit of therapy based on new proposed response criteria developed specifically for these groups of neoplasms. Finally, we introduce future opportunities including the planned international ABN MARRO (A Novel therapy combinations in untreated MDS/MPN And Relapsed/Refractory Overlap Syndromes) clinical study led by the MDS/MPN International Working Group.
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Affiliation(s)
- Brianna N Smith
- Department of Pediatrics, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN
| | - Michael Savona
- Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN
| | - Rami S Komrokji
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL.
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Diagnosis and Treatment of Chronic Myelomonocytic Leukemias in Adults: Recommendations From the European Hematology Association and the European LeukemiaNet. Hemasphere 2018; 2:e150. [PMID: 31723789 PMCID: PMC6745959 DOI: 10.1097/hs9.0000000000000150] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 09/11/2018] [Indexed: 02/07/2023] Open
Abstract
Chronic myelomonocytic leukemia (CMML) is a disease of the elderly, and by far the most frequent overlap myelodysplastic/myeloproliferative neoplasm in adults. Aside from the chronic monocytosis that remains the cornerstone of its diagnosis, the clinical presentation of CMML includes dysplastic features, cytopenias, excess of blasts, or myeloproliferative features including high white blood cell count or splenomegaly. Prognosis is variable, with several prognostic scoring systems reported in recent years, and treatment is poorly defined, with options ranging from watchful waiting to allogeneic stem cell transplantation, which remains the only curative therapy for CMML. Here, we present on behalf of the European Hematology Association and the European LeukemiaNet, evidence- and consensus-based guidelines, established by an international group of experts, from Europe and the United States, for standardized diagnostic and prognostic procedures and for an appropriate choice of therapeutic interventions in adult patients with CMML.
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Kanagal-Shamanna R, Hodge JC, Tucker T, Shetty S, Yenamandra A, Dixon-McIver A, Bryke C, Huxley E, Lennon PA, Raca G, Xu X, Jeffries S, Quintero-Rivera F, Greipp PT, Slovak ML, Iqbal MA, Fang M. Assessing copy number aberrations and copy neutral loss of heterozygosity across the genome as best practice: An evidence based review of clinical utility from the cancer genomics consortium (CGC) working group for myelodysplastic syndrome, myelodysplastic/myeloproliferative and myeloproliferative neoplasms. Cancer Genet 2018; 228-229:197-217. [PMID: 30377088 DOI: 10.1016/j.cancergen.2018.07.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 07/27/2018] [Accepted: 07/30/2018] [Indexed: 12/16/2022]
Abstract
Multiple studies have demonstrated the utility of chromosomal microarray (CMA) testing to identify clinically significant copy number alterations (CNAs) and copy-neutral loss-of-heterozygosity (CN-LOH) in myeloid malignancies. However, guidelines for integrating CMA as a standard practice for diagnostic evaluation, assessment of prognosis and predicting treatment response are still lacking. CMA has not been recommended for clinical work-up of myeloid malignancies by the WHO 2016 or the NCCN 2017 guidelines but is a suggested test by the European LeukaemiaNet 2013 for the diagnosis of primary myelodysplastic syndrome (MDS). The Cancer Genomics Consortium (CGC) Working Group for Myeloid Neoplasms systematically reviewed peer-reviewed literature to determine the power of CMA in (1) improving diagnostic yield, (2) refining risk stratification, and (3) providing additional genomic information to guide therapy. In this manuscript, we summarize the evidence base for the clinical utility of array testing in the workup of MDS, myelodysplastic/myeloproliferative neoplasms (MDS/MPN) and myeloproliferative neoplasms (MPN). This review provides a list of recurrent CNAs and CN-LOH noted in this disease spectrum and describes the clinical significance of the aberrations and how they complement gene mutation findings by sequencing. Furthermore, for new or suspected diagnosis of MDS or MPN, we present suggestions for integrating genomic testing methods (CMA and mutation testing by next generation sequencing) into the current standard-of-care clinical laboratory testing (karyotype, FISH, morphology, and flow).
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Affiliation(s)
- Rashmi Kanagal-Shamanna
- Department of Hematopathology, The University of Texas M.D. Anderson Cancer Center, Houston TX, USA.
| | - Jennelle C Hodge
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA; Department of Pediatrics, University of California Los Angeles, Los Angeles, CA, USA; Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Tracy Tucker
- Department of Pathology and Laboratory Medicine, Cancer Genetics Laboratory, British Columbia Cancer Agency, Vancouver, BC Canada
| | - Shashi Shetty
- Department of Pathology, UHCMC, University Hospitals and Case Western Reserve University, Cleveland, OH, USA
| | - Ashwini Yenamandra
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Christine Bryke
- Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Emma Huxley
- West Midlands Regional Genetics Laboratory, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | | | - Gordana Raca
- Department of Pathology and Laboratory Medicine, Children's Hospital of Los Angeles, Los Angeles, CA, USA
| | - Xinjie Xu
- ARUP Laboratories, University of Utah, Salt Lake City, UT, USA
| | - Sally Jeffries
- West Midlands Regional Genetics Laboratory, Birmingham Women's and Children's NHS Foundation Trust, Birmingham, UK
| | - Fabiola Quintero-Rivera
- Department of Pathology and Laboratory Medicine, UCLA Clinical Genomics Center, University of California Los Angeles, Los Angeles, CA, USA
| | - Patricia T Greipp
- Department of Laboratory Medicine and Pathology, Genomics Laboratory, Mayo Clinic, Rochester, MN, USA
| | - Marilyn L Slovak
- TriCore Reference Laboratories, University of New Mexico, Albuquerque, NM, USA
| | - M Anwar Iqbal
- University of Rochester Medical Center, Rochester, NY, USA
| | - Min Fang
- Fred Hutchinson Cancer Research Center and University of Washington, Seattle, WA, USA.
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Aujla A, Linder K, Iragavarapu C, Karass M, Liu D. SRSF2 mutations in myelodysplasia/myeloproliferative neoplasms. Biomark Res 2018; 6:29. [PMID: 30275952 PMCID: PMC6158887 DOI: 10.1186/s40364-018-0142-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 08/27/2018] [Indexed: 12/12/2022] Open
Abstract
Recurrent gene mutations have been described with varying frequencies in myelodysplasia (MDS) /myeloproliferative neoplasm (MPN) overlap syndromes (MMOS). Recent work has placed significant focus on understanding the role of gene lesions involving the spliceosomal machinery in leukemogeneis. SRSF2 is a gene encoding critical spliceosomal proteins. SRSF2 mutations appear to play an important role in pathogenesis of MMOS, particularly in chronic myelomonocytic leukemia. Inhibition of splicing may be a new therapeutic approach. E7107, a spliceosome inhibitor, has been shown to differentially inhibit splicing more in SRSF2-mutant cells leading to decreased leukemia burden in mice. H3B-8800 is a small molecule modulator of spliceosome complex and has been shown to lower leukemia burden in SRSF2-P95H mutant mice. This review focuses on the incidence of mutant SRSF2 across various MMOS as well as recent clinical development of spliceosome inhibitors.
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Affiliation(s)
- Amandeep Aujla
- 1Department of Medicine, New York Medical College and Westchester Medical Center, Valhalla, NY USA
| | - Katherine Linder
- 2Section of Hematology-Oncology, Department of Medicine, Baylor College of Medicine, Houston, TX USA
| | - Chaitanya Iragavarapu
- 3Division of Blood and Marrow Transplantation, Department of Medicine, Stanford University, Stanford, CA USA
| | - Michael Karass
- 1Department of Medicine, New York Medical College and Westchester Medical Center, Valhalla, NY USA
| | - Delong Liu
- 1Department of Medicine, New York Medical College and Westchester Medical Center, Valhalla, NY USA.,4The affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital, 127 Dongming Road, Zhengzhou, 450008 China
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Drozd-Sokołowska J, Mądry K, Waszczuk-Gajda A, Biecek P, Szwedyk P, Budziszewska K, Raźny M, Dutka M, Obara A, Wasilewska E, Lewandowski K, Piekarska A, Bober G, Krzemień H, Stella-Hołowiecka B, Kapelko-Słowik K, Sawicki W, Paszkowska-Kowalewska M, Machowicz R, Dwilewicz-Trojaczek J. Atypical chronic myeloid leukaemia: A case of an orphan disease-A multicenter report by the Polish Adult Leukemia Group. Hematol Oncol 2018; 36:570-575. [PMID: 29512182 DOI: 10.1002/hon.2501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 11/08/2022]
Abstract
Atypical chronic myeloid leukaemia (aCML) belongs to myelodysplastic/myeloproliferative neoplasms. Because of its rarity and changing diagnostic criteria throughout subsequent classifications, data on aCML are very scarce. Therefore, we at the Polish Adult Leukemia Group performed a nationwide survey on aCML. Eleven biggest Polish centres participated in the study. Altogether, 45 patients were reported, among whom only 18 patients (40%) fulfilled diagnostic criteria. Among misdiagnosed patients, myelodysplastic/myeloproliferative syndrome unclassifiable and chronic myelomonocytic leukaemia were the most frequent diagnoses. Thirteen patients were male, median age 64.6 years (range 40.4-80.9). The median parameters at diagnosis were as follows: white blood cell count 97 × 109 /L (23.8-342) with immature progenitors amounting at 27.5% (12-72), haemoglobin 8.6 g/dL (3.9-14.9), and platelet count 66 × 109 /L (34-833). Cytoreductive treatment was used in all patients, and 2 patients underwent allogeneic hematopoietic stem cell transplantation. The median overall survival was 14.1 months (95% CI, 7.2), with median acute myeloid leukaemia-free survival of 13.3 months (95% CI, 3.6-22.6). Cumulative incidence of acute myeloid leukaemia transformation after 1 year in aCML group was 12.5% (95% CI, 0%-29.6%). To conclude, aCML harbours a poor prognosis. Treatment options are limited, with allogeneic hematopoietic stem cell transplantation being the only curative method at present, although only a minority of patients are transplant eligible. Educational measures are needed to improve the quality of diagnoses.
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Affiliation(s)
- Joanna Drozd-Sokołowska
- Department of Hematology, Oncology and Internal Diseases, Medical Univeristy of Warsaw, Warsaw, Poland
| | - Krzysztof Mądry
- Department of Hematology, Oncology and Internal Diseases, Medical Univeristy of Warsaw, Warsaw, Poland
| | - Anna Waszczuk-Gajda
- Department of Hematology, Oncology and Internal Diseases, Medical Univeristy of Warsaw, Warsaw, Poland
| | - Przemysław Biecek
- Faculty of Mathematics and Information Science, Warsaw University of Technology, Warsaw, Poland
| | - Paweł Szwedyk
- Department of Hematology, Ludwik Rydygier Hospital, Cracow, Poland
| | - Katarzyna Budziszewska
- Department of Hematology, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
| | - Magdalena Raźny
- Department of Hematology, Ludwik Rydygier Hospital, Cracow, Poland
| | - Magdalena Dutka
- Department of Hematology and Transplantology, Medical University of Gdansk, Gdansk, Poland
| | - Agata Obara
- Department of Hematology, Świętokrzyskie Cancer Centre, Kielce, Poland
| | - Ewa Wasilewska
- Department of Hematology, Medical University of Białystok, Białystok, Poland
| | - Krzysztof Lewandowski
- Department of Hematology and Bone Marrow Transplantation, Poznań Medical University, Poznań, Poland
| | - Agnieszka Piekarska
- Department of Hematology and Transplantology, Medical University of Gdansk, Gdansk, Poland
| | - Grażyna Bober
- Department of Hematology and Bone Marrow Transplantation, Medical University of Silesia, Katowice, Poland
| | - Helena Krzemień
- Department of Hematology and Bone Marrow Transplantation, Medical University of Silesia, Katowice, Poland
| | - Beata Stella-Hołowiecka
- Department of Hematology and Bone Marrow Transplantation, Medical University of Silesia, Katowice, Poland
| | - Katarzyna Kapelko-Słowik
- Department and Clinic of Hematology, Blood Neoplasms, and Bone Marrow Transplantation, Wroclaw Medical University, Wroclaw, Poland
| | - Waldemar Sawicki
- Department of Hematology, Military Medical Institute in Warsaw, Warsaw, Poland
| | | | - Rafał Machowicz
- Department of Hematology, Oncology and Internal Diseases, Medical Univeristy of Warsaw, Warsaw, Poland
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Assi R, Kantarjian HM, Garcia-Manero G, Cortes JE, Pemmaraju N, Wang X, Nogueras-Gonzalez G, Jabbour E, Bose P, Kadia T, Dinardo CD, Patel K, Bueso-Ramos C, Zhou L, Pierce S, Gergis R, Tuttle C, Borthakur G, Estrov Z, Luthra R, Hidalgo-Lopez J, Verstovsek S, Daver N. A phase II trial of ruxolitinib in combination with azacytidine in myelodysplastic syndrome/myeloproliferative neoplasms. Am J Hematol 2018; 93:277-285. [PMID: 29134664 DOI: 10.1002/ajh.24972] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 11/09/2017] [Accepted: 11/10/2017] [Indexed: 01/05/2023]
Abstract
Ruxolitinib and azacytidine target distinct disease manifestations of myelodysplastic syndrome/myeloproliferative neoplasms (MDS/MPNs). Patients with MDS/MPNs initially received ruxolitinib BID (doses based on platelets count), continuously in 28-day cycles for the first 3 cycles. Azacytidine 25 mg/m2 (Day 1-5) intravenously or subcutaneously was recommended to be added to each cycle starting cycle 4 and could be increased to 75 mg/m2 (Days 1-5) for disease control. Azacytidine could be started earlier than cycle 4 and/or at higher dose in patients with rapidly proliferative disease or with elevated blasts. Thirty-five patients were treated (MDS/MPN-U, n =14; CMML, n =17; aCML, n =4), with a median follow-up of 15.2 months (range, 1.0-41.5). All patients were evaluable by the 2015 international consortium proposal of response criteria for MDS/MPNs (ICP MDS/MPN) and 20 (57%) responded. Nine patients (45%) responded after the addition of azacytidine. A greater than 50% reduction in palpable splenomegaly at 24 weeks was noted in 9/14 (64%) patients. Responders more frequently were JAK2-mutated (P = .02) and had splenomegaly (P = .03) compared to nonresponders. New onset grade 3/4 anemia and thrombocytopenia occurred in 18 (51%) and 19 (54%) patients, respectively, but required therapy discontinuation in only 1 (3%) patient. Patients with MDS/MPN-U had better median survival compared to CMML and aCML (26.5 vs 15.1 vs 8 months; P = .034). The combination of ruxolitinib and azacytidine was well-tolerated with an ICP MDS/MPN-response rate of 57% in patients with MDS/MPNs. The survival benefit was most prominent in patients with MDS/MPN-U.
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Affiliation(s)
- Rita Assi
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Hagop M. Kantarjian
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | | | - Jorge E. Cortes
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Naveen Pemmaraju
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Xuemei Wang
- Department of Biostatistics; The University of Texas MD Anderson Cancer Center; Houston Texas
| | | | - Elias Jabbour
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Prithviraj Bose
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Tapan Kadia
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Courtney D. Dinardo
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Keyur Patel
- Department of Hematopathology; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Carlos Bueso-Ramos
- Department of Hematopathology; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Lingsha Zhou
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Sherry Pierce
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Romany Gergis
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Carla Tuttle
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Gautam Borthakur
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Zeev Estrov
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Rajyalakshmi Luthra
- Department of Hematopathology; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Juliana Hidalgo-Lopez
- Department of Hematopathology; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Srdan Verstovsek
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
| | - Naval Daver
- Department of Leukemia; The University of Texas MD Anderson Cancer Center; Houston Texas
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Bartels S, Schipper E, Hasemeier B, Kreipe H, Lehmann U. Routine clinical mutation profiling using next generation sequencing and a customized gene panel improves diagnostic precision in myeloid neoplasms. Oncotarget 2017; 7:30084-93. [PMID: 27029036 PMCID: PMC5058665 DOI: 10.18632/oncotarget.8310] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/14/2016] [Indexed: 01/08/2023] Open
Abstract
Microscopic examination of myelodysplastic syndromes (MDS) and myelodysplastic-myeloproliferative neoplasms (MDS/MPN) may be challenging because morphological features can overlap with those of reactive states. Demonstration of clonal hematopoiesis provides a diagnostic clue and has become possible by comprehensive mutation profiling of a number of frequently mutated genes, some of them with large coding regions. To emphasize the potential benefit of NGS in hematopathology we present sequencing results from routinely processed formalin-fixed and paraffin-embedded (FFPE) bone marrow trephines (n = 192). A customized amplicon-based gene panel including 23 genes frequently mutated in myeloid neoplasms was established and implemented. Thereby, 629,691 reads per sample (range 179,847–1,460,412) and a mean coverage of 2,702 (range 707–6,327) could be obtained, which are sufficient for comprehensive mutational profiling. Seven samples failed in sequencing (3.6%). In 185 samples we found in total 269 pathogenic variants (mean 1.4 variants per patient, range 0-5), 125 Patients exhibit at least one pathogenic mutation (67.6%). Variants show allele frequencies ranging from 6.7% up to 95.7%. Most frequently mutated genes were TET2 (28.7%), SRSF2 (19.5%), ASXL1 (8.6%) and U2AF1 (8.1%). The mutation profiling increases the diagnostic precision and adds prognostic information.
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Affiliation(s)
- Stephan Bartels
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover, Germany
| | - Elisa Schipper
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover, Germany
| | - Britta Hasemeier
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover, Germany
| | - Hans Kreipe
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover, Germany
| | - Ulrich Lehmann
- Institute of Pathology, Medizinische Hochschule Hannover, Hannover, Germany
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Changes in the World Health Organization 2016 classification of myeloid neoplasms everyone should know. Curr Opin Hematol 2017; 25:120-128. [PMID: 29256927 DOI: 10.1097/moh.0000000000000404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW This review highlights the main changes in the revised 2016 WHO classification of myeloid neoplasms (published in 2017) that impact diagnosis and ultimately impact management of patients with these diseases. RECENT FINDINGS The revision was based on data accumulated since the 2008 WHO classification, much of which relate to new molecular genetic information about these neoplasms. This massive recent influx of data concerning the significance of pathogenic mutations has affected all myeloid neoplasm categories. The new information has been incorporated as part of the diagnostic criteria of many diseases and has led to the creation of new provisional entities defined by genetic features. Germline mutations that predispose to myeloid neoplasms are also emerging as important findings that impact disease classification. SUMMARY The growing body of genetic data have not only altered the classification of myeloid neoplasms, but are also impacting patient management. Genetically-defined disease categories have characteristic prognoses and predicted clinical behavior. Some mutations are associated with responsiveness to certain therapies, including those that target relevant oncogenes. The disease categories in the new classification facilitate the application of risk-adapted therapy based on the most recently available data.
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Dhakal P, Gundabolu K, Amador C, Rayamajhi S, Bhatt VR. Atypical chronic myeloid leukemia: a rare entity with management challenges. Future Oncol 2017; 14:177-185. [PMID: 29226717 DOI: 10.2217/fon-2017-0334] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The aim of our study was to review the clinicopathologic features and management of atypical chronic myeloid leukemia (aCML). Relevant manuscripts published in English were searched using PubMed. aCML is diagnosed as per WHO 2016 classification in the presence of leukocytosis ≥13 × 109/l with circulating neutrophil precursors ≥10%, monocytes less than 10%, minimal basophils, hypercellular bone marrow with granulocytic proliferation and dysplasia, bone marrow blast less than 20% and absence of BCR/ABL fusion gene. Common cytogenetic features and mutations include trisomy 8, and mutations in SETBP1 and ETNK1. Median survival is 1-2 years. Hematopoietic stem cell transplant may be the only curative option. Ruxolitinib and dasatinib are emerging therapeutic options. Thus, aCML is a rare entity with poor survival. Novel therapies are needed.
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Affiliation(s)
- Prajwal Dhakal
- Department of Medicine, Michigan State University, 788 Service Rd, East Lansing, MI 48824, USA
| | - Krishna Gundabolu
- Department of Internal Medicine, Division of Hematology & Oncology, University of Nebraska Medical Center, NE 68198, USA
| | - Catalina Amador
- Department of Pathology & Microbiology, University of Nebraska Medical Center, NE 68198, USA
| | - Supratik Rayamajhi
- Department of Medicine, Michigan State University, 788 Service Rd, East Lansing, MI 48824, USA
| | - Vijaya Raj Bhatt
- Department of Internal Medicine, Division of Hematology & Oncology, University of Nebraska Medical Center, NE 68198, USA
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45
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Shi M, Nguyen P, Jevremovic D. Flow Cytometric Assessment of Chronic Myeloid Neoplasms. Clin Lab Med 2017; 37:803-819. [DOI: 10.1016/j.cll.2017.07.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Petrova-Drus K, Chiu A, Margolskee E, Barouk-Fox S, Geyer J, Dogan A, Orazi A. Bone marrow fibrosis in chronic myelomonocytic leukemia is associated with increased megakaryopoiesis, splenomegaly and with a shorter median time to disease progression. Oncotarget 2017; 8:103274-103282. [PMID: 29262560 PMCID: PMC5732726 DOI: 10.18632/oncotarget.21870] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 09/29/2017] [Indexed: 11/25/2022] Open
Abstract
Bone marrow (BM) fibrosis is an adverse prognostic marker in several myeloid neoplasms, particularly in myelodysplastic syndrome (MDS) with fibrosis; however, its significance in chronic myelomonoctyic leukemia (CMML) has not been evaluated. We performed a retrospective analysis to investigate the prognostic and clinicopathological features of CMML with and without BM fibrosis. The study included specimens from a total of 83 untreated CMML patients from 2 large institutions. Patients with any amount of BM fibrosis (MF-1 or higher; MF1+) had significantly shorter progression-free survival (MF1+, 28.3 months vs MF0, not reached; p = 0.001, log rank test), splenomegaly (p = 0.016), and increased BM megakaryocytes (p = 0.04) compared to patients without BM fibrosis (MF-0). No association was observed between fibrosis and peripheral blood parameters, presence of JAK2 V617F mutation, BM blasts, or overall survival. Our study demonstrates the importance of assessing BM fibrosis in CMML. Similar to MDS, the presence of BM fibrosis may identify a distinct subgroup of CMML patients (CMML-F) with a more aggressive clinical course.
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Affiliation(s)
- Kseniya Petrova-Drus
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - April Chiu
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Elizabeth Margolskee
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY, USA
| | - Sharon Barouk-Fox
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY, USA
| | - Julia Geyer
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY, USA
| | - Ahmet Dogan
- Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Attilio Orazi
- Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital-Weill Cornell Medicine, New York, NY, USA
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Mukherjee S, Sathanoori M, Ma Z, Andreatta M, Lennon PA, Wheeler SR, Prescott JL, Coldren C, Casey T, Rietz H, Fasig K, Woodford R, Hartley T, Spence D, Donnelan W, Berdeja J, Flinn I, Kozyr N, Bouzyk M, Correll M, Ho H, Kravtsov V, Tunnel D, Chandra P. Addition of chromosomal microarray and next generation sequencing to FISH and classical cytogenetics enhances genomic profiling of myeloid malignancies. Cancer Genet 2017; 216-217:128-141. [DOI: 10.1016/j.cancergen.2017.07.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 04/28/2017] [Accepted: 07/27/2017] [Indexed: 01/31/2023]
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48
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Emerging mechanisms of long noncoding RNA function during normal and malignant hematopoiesis. Blood 2017; 130:1965-1975. [PMID: 28928124 DOI: 10.1182/blood-2017-06-788695] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 09/15/2017] [Indexed: 12/22/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are increasingly recognized as vital components of gene programs controlling cell differentiation and function. Central to their functions is an ability to act as scaffolds or as decoys that recruit or sequester effector proteins from their DNA, RNA, or protein targets. lncRNA-modulated effectors include regulators of transcription, chromatin organization, RNA processing, and translation, such that lncRNAs can influence gene expression at multiple levels. Here we review the current understanding of how lncRNAs help coordinate gene expression to modulate cell fate in the hematopoietic system. We focus on a growing number of mechanistic studies to synthesize emerging principles of lncRNA function, emphasizing how they facilitate diversification of gene programming during development. We also survey how disrupted lncRNA function can contribute to malignant transformation, highlighting opportunities for therapeutic intervention in specific myeloid and lymphoid cancers. Finally, we discuss challenges and prospects for further elucidation of lncRNA mechanisms.
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49
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Oligomonocytic chronic myelomonocytic leukemia (chronic myelomonocytic leukemia without absolute monocytosis) displays a similar clinicopathologic and mutational profile to classical chronic myelomonocytic leukemia. Mod Pathol 2017; 30:1213-1222. [PMID: 28548124 DOI: 10.1038/modpathol.2017.45] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 04/10/2017] [Accepted: 04/14/2017] [Indexed: 12/30/2022]
Abstract
Chronic myelomonocytic leukemia is characterized by persistent absolute monocytosis (≥1 × 109/l) in the peripheral blood and dysplasia in ≥1 lineages. In the absence of dysplasia, an acquired clonal genetic abnormality is required or causes for reactive monocytosis have to be excluded. Oligomonocytic chronic myelomonocytic leukemia showing increased monocytes but no absolute monocytosis in the peripheral blood occurs occasionally. These cases are likely classified as myelodysplastic syndrome or myelodysplastic/myeloproliferative neoplasm, unclassifiable. A subset eventually develop overt chronic myelomonocytic leukemia. Better characterization of oligomonocytic chronic myelomonocytic leukemia is essential since the distinction between chronic myelomonocytic leukemia and myelodysplastic syndrome is clinically relevant. We identified 44 cases of oligomonocytic chronic myelomonocytic leukemia (≥10% peripheral blood monocytes with absolute monocyte count of 0.5-1 × 109/l) and 28 consecutive chronic myelomonocytic leukemia controls. Clinicopathologic features were compared and mutation analysis was performed. Oligomonocytic chronic myelomonocytic leukemia patients were significantly younger (median age of 65 vs 72). They had lower WBC and absolute neutrophil count, while the monocyte percentage, hemoglobin and platelet counts were similar in the two groups. The myeloid to erythroid ratio was predominantly decreased or normal, compared with the characteristic increase in chronic myelomonocytic leukemia (P=0.006). 38% of patients progressed to overt chronic myelomonocytic leukemia (median: 12 months). The overall percentage of mutations was significantly lower in oligomonocytic chronic myelomonocytic leukemia. However, the most frequent mutations in both groups were the 'signature' chronic myelomonocytic leukemia mutations in ASXL1, TET2 and SRSF2. Mutations in CBL were found exclusively in overt chronic myelomonocytic leukemia. In conclusion, we demonstrate clinical and genetic similarities between overt chronic myelomonocytic leukemia and oligomonocytic chronic myelomonocytic leukemia. The findings suggest that at least a subset of oligomonocytic chronic myelomonocytic leukemia represents early phase 'dysplastic type' chronic myelomonocytic leukemia.
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50
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The Challenge of Treating Myelodysplastic Syndromes/Myeloproliferative Neoplasms. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2017; 17S:S37-S42. [PMID: 28760301 DOI: 10.1016/j.clml.2017.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 02/28/2017] [Indexed: 11/21/2022]
Abstract
Myelodysplastic syndromes/myeloproliferative neoplasms (MDS/MPN) comprise a spectrum of myeloid disorders with both dysplastic and proliferative features, arising from hematopoietic stem cells. MDS/MPN are neither MDS nor MPN but a distinct World Health Organization-defined subclassification of diseases that, by definition, do not arise from a pre-existing MDS or MPN, inherently creating diagnostic and therapeutic challenges. Appropriately recognizing and classifying MDS/MPN is paramount for appropriately formulating treatment strategies and accurate prognostication. Highlighting the unique molecular, morphologic, and clinical characteristics among the subclassifications of MDS/MPN can assist in the appropriate diagnosis and aid in choice of therapeutic strategies. We describe the challenges of the appropriate diagnosis and treatment of MDS/MPN.
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