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Lübke J, Naumann N, Kluger S, Schwaab J, Metzgeroth G, Evans E, Gardino AK, Lengauer C, Hofmann WK, Fabarius A, Cross NCP, Reiter A, Jawhar M. Inhibitory effects of midostaurin and avapritinib on myeloid progenitors derived from patients with KIT D816V positive advanced systemic mastocytosis. Leukemia 2019; 33:1195-1205. [PMID: 30911112 PMCID: PMC6756065 DOI: 10.1038/s41375-019-0450-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/08/2019] [Accepted: 03/08/2019] [Indexed: 02/03/2023]
Abstract
Advanced systemic mastocytosis (advSM) is characterized by the presence of an acquired KIT D816V mutation in >90% of patients. In the majority of patients, KIT D816V is not only detected in mast cells but also in other hematopoietic lineages. We sought to investigate the effects of the KIT-inhibitors midostaurin and avapritinib on single-cell-derived myeloid progenitor cells using granulocyte-macrophage colony-forming-units of patients with KIT D816V positive advSM. Colonies obtained prior to treatment were incubated in vitro with midostaurin (n = 10) or avapritinib (n = 11) and showed a marked reduction (≥50%) of KIT D816V positive colonies in 3/10 (30%) and 7/11 (64%) patient samples, respectively. Three of those 7 (43%) avapritinib responders were resistant to midostaurin in both, in vitro and in vivo. Colonies from four patients with high-risk molecular profile and aggressive clinical course were resistant to both drugs. The in vitro activity of midostaurin strongly correlated with clinical and molecular responses, e.g., relative reduction of KIT D816V allele burden and the proportion of KIT D816V positive colonies obtained after six months midostaurin-treatment in vivo. We conclude that the colony inhibition assay provides useful information for prediction of responses on midostaurin and that avapritinib has a superior in vitro activity compared to midostaurin.
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Affiliation(s)
- Johannes Lübke
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Nicole Naumann
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Sebastian Kluger
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Juliana Schwaab
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Georgia Metzgeroth
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Erica Evans
- Blueprint Medicines Corporation, Cambridge, MA, USA
| | | | | | - Wolf-Karsten Hofmann
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Alice Fabarius
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Nicholas C P Cross
- Wessex Regional Genetics Laboratory, Salisbury NHS Foundation Trust, Salisbury, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
| | - Andreas Reiter
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany.
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
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Grifoni FI, Sciumè M, Pravettoni V, Ulivieri FM, Muratori S, Fracchiolla NS, Tagliaferri E, Gianelli U, Migliorini AC, Cro L, Pacilli A, Mannelli F, Baldini L. A case report of systemic mastocytosis associated with multiple hematologic non-mast cell lineage diseases. Hematol Oncol 2019; 37:205-211. [PMID: 30849188 DOI: 10.1002/hon.2605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 02/23/2019] [Accepted: 03/05/2019] [Indexed: 11/06/2022]
Abstract
Systemic mastocytosis (SM) is a hematological malignancy characterized by extracutaneous infiltration by atypical mast cells. Together with indolent SM, aggressive SM, and mast cell leukemia, the World Health Organization (WHO) recognizes another major disease subgroup: SM with an associated hematological neoplasm, which is characterized by the presence of a concurrent neoplasm, more commonly, a chronic myelomonocytic leukemia. While KIT D816V is commonly regarded as the driver mutation, the clinical presentation of SM is extremely varied. Treatment of SM might not be simple, but now more specific therapies tailored toward prognostic subgroups of patients have been developed. Here, we report a detailed description of clinical management and biological features of a systemic mastocytocis case associated with multiple hematologic non-mast cell lineage diseases.
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Affiliation(s)
- Federica Irene Grifoni
- Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Mariarita Sciumè
- Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Valerio Pravettoni
- U.O.C. General Medicine-Immunology and Allergology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Fabio Massimo Ulivieri
- Nuclear Medicine, Bone Metabolic Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Simona Muratori
- Dermatology Unit, Department of Physiopathology and Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | | | - Elena Tagliaferri
- Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Umberto Gianelli
- Division of Pathology, Department of Pathophysiology and Transplantation, University of Milan, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Anna Chiara Migliorini
- Laboratorio di ematologia, Servizio di immunoematologia e trasfusionale, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Lilla Cro
- Servizio di Citofluorimetria, Laboratorio Centrale, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Annalisa Pacilli
- Department of Experimental and Clinical Medicine, CRIMM, Center Research and Innovation of Myeloproliferative Neoplasms, Azienda Ospedaliera Universitaria Careggi, University of Florence, Florence, Italy
| | - Francesco Mannelli
- Department of Experimental and Clinical Medicine, CRIMM, Center Research and Innovation of Myeloproliferative Neoplasms, Azienda Ospedaliera Universitaria Careggi, University of Florence, Florence, Italy
| | - Luca Baldini
- Hematology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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Shomali W, Gotlib J. The new tool " KIT" in advanced systemic mastocytosis. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2018; 2018:127-136. [PMID: 30504301 PMCID: PMC6245986 DOI: 10.1182/asheducation-2018.1.127] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Mastocytosis is a rare disease characterized by KIT-driven expansion and accumulation of neoplastic mast cells in various tissues. Although mediator symptoms related to mast cell activation can impose a symptom burden in cutaneous disease and across the spectrum of systemic mastocytosis subtypes, the presence of an associated hematologic neoplasm and/or organ damage denotes advanced disease and the potential for increased morbidity and mortality. In addition to the revised 2016 World Health Organization classification of mastocytosis, a new diagnostic and treatment toolkit, tethered to enhanced molecular characterization and monitoring, is poised to transform the management of patients with advanced systemic mastocytosis (advSM). Although the efficacy of midostaurin and novel selective KIT D816V inhibitors, such as avapritinib (BLU-285), have validated KIT as a therapeutic target, the clinical and biologic heterogeneity of advSM requires that we reimagine the blueprint for tackling these diseases and use tools that move beyond KIT-centric approaches.
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Affiliation(s)
- William Shomali
- Divisions of Hematology and
- Medical Oncology, Stanford University School of Medicine/Stanford Cancer Institute, Stanford, CA
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55
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Maric I, Sun X. Advances in diagnosis of mastocytosis and hypereosinophilic syndrome ☆. Semin Hematol 2018; 56:22-29. [PMID: 30573041 DOI: 10.1053/j.seminhematol.2018.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 05/07/2018] [Indexed: 02/02/2023]
Abstract
Mastocytosis and hypereosinophilic syndrome is very rare neoplastic hematopoietic diseases. Mastocytosis is characterized by expansion and accumulation of clonal tissue mast cells in skin and/or various internal organs, while hypereosinophilic syndrome manifests with an increased number of eosinophils in the peripheral blood and tissue damage. These diseases represent a diagnostic challenge, since they can have overlapping clinical and pathologic features. Recently, great advances in the molecular and immunophenotypic diagnosis of these two entities were achieved, contributing to the new World Health Organization (WHO) classification. The WHO classification of myeloid neoplasms has been revised in 2016 by adding several new entities and refinement of the 2008 WHO classification, in an attempt to incorporate up-to-date clinical, prognostic, morphologic, and molecular genetics data that emerged since 2008. Here we overview the recent advances in disease diagnosis, with a focus on the updated WHO classification, refined diagnostic criteria, and up-to-date molecular findings in these two rare diseases.
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Affiliation(s)
- Irina Maric
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892-1508.
| | - Xiaoping Sun
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, MD 20892-1508
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56
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Gotlib J. Tyrosine Kinase Inhibitors in the Treatment of Eosinophilic Neoplasms and Systemic Mastocytosis. Hematol Oncol Clin North Am 2017; 31:643-661. [PMID: 28673393 DOI: 10.1016/j.hoc.2017.04.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The World Health Organization's semimolecular classification of eosinophilias emphasizes neoplasms driven by fusion tyrosine kinases. More than 80% of patients with systemic mastocytosis carry the KIT D816V mutation, the primary driver of disease pathogenesis. Genetic annotation of these diseases is critical and affords opportunities for targeted therapy. This article discusses our understanding of the mutated tyrosine kinome of eosinophilic neoplasms and systemic mast cell disease, and the successes and limitations of available therapies. Use of tyrosine kinase inhibitors as a bridge to hematopoietic stem cell transplantation, and development of more selective and potent tyrosine kinase inhibitors is also highlighted.
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Affiliation(s)
- Jason Gotlib
- Division of Hematology, Stanford Cancer Institute/Stanford University School of Medicine, 875 Blake Wilbur Drive, Room 2324, Stanford, CA 94305-5821, USA.
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Iqbal MF, Soriano PMK, Nagendra S, Sana S. Systemic Mastocytosis in Association with Small Lymphocytic Lymphoma. AMERICAN JOURNAL OF CASE REPORTS 2017; 18:1053-1057. [PMID: 28970467 PMCID: PMC5637574 DOI: 10.12659/ajcr.905759] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Patient: Female, 59 Final Diagnosis: Systemic mastocytosis in association with small lymphocytic lymphoma Symptoms: Skin rash Medication: — Clinical Procedure: Bone marrow biopsy Specialty: Hematology
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Affiliation(s)
- Muhammad F Iqbal
- Department of Internal Medicine, Southern Illinois University, Springfield, IL, USA
| | | | - Sanjai Nagendra
- Department of Pathology, Memorial Medical Center, Springfield, IL, USA
| | - Sherjeel Sana
- Division of Hematology/Oncology, Simmons Cancer Institute at Southern Illinois University (SIU), Springfield, IL, USA
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Shivarov V, Gueorguieva R, Ivanova M, Stoimenov A. Incidence of second solid cancers in mastocytosis patients: a SEER database analysis. Leuk Lymphoma 2017; 59:1474-1477. [PMID: 28952818 DOI: 10.1080/10428194.2017.1382694] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Velizar Shivarov
- a Department of Clinical Hematology , Sofiamed University Hospital , Sofia , Bulgaria.,b Laboratory of Clinical Immunology , Sofiamed University Hospital , Sofia , Bulgaria
| | - Ralitza Gueorguieva
- c Department of Biostatistics, Schools of Public Health and Medicine , Yale University , New Haven , CT , USA
| | - Milena Ivanova
- d Laboratory of Clinical Immunology , Alexandrovska University Hospital, Medical University Sofia , Sofia , Bulgaria
| | - Angel Stoimenov
- e Laboratory of Transfusion Medicine , Sofiamed University Hospital , Sofia , Bulgaria
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59
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Hilmi FAI, Al-Sabbagh A, Soliman DS, Sabah HA, Ismail OM, Yassin M, El-Omri H. Acute Myeloid Leukemia With Inv(16)(p13q22) Associated With Hidden Systemic Mastocytosis: Case Report and Review of Literature. Clin Med Insights Blood Disord 2017; 10:1179545X17700858. [PMID: 28579854 PMCID: PMC5428180 DOI: 10.1177/1179545x17700858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 02/12/2017] [Indexed: 01/08/2023]
Abstract
Systemic mastocytosis (SM) is a condition associated with clonal neoplastic proliferation of mast cells. In up to 40% of systemic mastocytosis cases, an associated clonal hematological disease of non-mast cell lineage, such as acute myeloid leukemia (AML), is diagnosed before, simultaneously with, or after the diagnosis of SM. Herein, we report a case of a 30-year-old man diagnosed with AML with inv(16) (p13;q22) CBFB:MYH11. Associated mastocytosis was not noted at diagnosis and was only detected in the bone marrow at time of remission after successful chemotherapy. The diagnosis of mastocytosis was based on the demonstration of a multifocal dense mast cell infiltrate in the marrow biopsy with aberrant immunophenotype, with coexpression of tryptase, CD117, and CD25. The mast cells showed atypical morphology mostly with irregular nuclear contour, bilobed or multilobed nuclei with cytoplasmic hypogranulation or irregular metachromatic granule distribution, and some cells with eccentric nucleus or spindle shape. Reexamination of the pretherapeutic bone marrow with immunostain for tryptase and CD25 revealed that mastocytosis was present from the start but masked by extensive blast proliferation. This case indicates that mast cell infiltrates are sometimes underappreciated at the original diagnosis of AML with inv(16) and that the concurrent diagnosis of SM with AML requires a high index of suspicion supported with comprehensive morphologic and immunohistochemical evaluation for a neoplastic mast cell proliferation.
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Affiliation(s)
- Feryal Abbas Ibrahim Hilmi
- Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Ahmad Al-Sabbagh
- Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Dina Sameh Soliman
- Department of Laboratory Medicine and Pathology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Hesham Al Sabah
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Omar Mohammad Ismail
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Mohamed Yassin
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - Halima El-Omri
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
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Herrero-Moyano M, Capusan TM, Pérez-Plaza A, Godoy A, Sánchez-Perez J. Intertriginous maculopapular mastocytosis in a patient with acute myeloid leukemia. JAAD Case Rep 2017; 3:61-63. [PMID: 28229121 PMCID: PMC5311425 DOI: 10.1016/j.jdcr.2016.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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Pardanani A. Systemic mastocytosis in adults: 2017 update on diagnosis, risk stratification and management. Am J Hematol 2016; 91:1146-1159. [PMID: 27762455 DOI: 10.1002/ajh.24553] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 09/12/2016] [Indexed: 12/17/2022]
Abstract
Disease overview:Systemic mastocytosis (SM) results from a clonal proliferation of abnormal mast cells (MC) in one or more extra-cutaneous organs. DIAGNOSIS The major criterion is presence of multifocal clusters of morphologically abnormal MC in the bone marrow. Minor diagnostic criteria include elevated serum tryptase level, abnormal MC expression of CD25 and/or CD2, and presence of KITD816V. Risk stratification: The 2008 World Health Organization (WHO) classification of SM has been shown to be prognostically relevant. Classification of SM patients into indolent (SM), aggressive SM (ASM), SM associated with a clonal non-MC lineage disease (SM-AHNMD) and mast cell leukemia (MCL) subgroups is a useful first step in establishing prognosis. MANAGEMENT SM treatment is generally palliative. ISM patients have a normal life expectancy and receive symptom-directed therapy; infrequently, cytoreductive therapy may be indicated for refractory symptoms. ASM patients have disease-related organ dysfunction; interferon-α (±corticosteroids) can control dermatological, hematological, gastrointestinal, skeletal and mediator-release symptoms, but is hampered by poor tolerability. Similarly, cladribine has broad therapeutic activity, with particular utility when rapid MC debulking is indicated; the main toxicity is myelosuppression. Imatinib has a therapeutic role in the presence of an imatinib-sensitive KIT mutation or in KITD816-unmutated patients. Treatment of SM-AHNMD is governed primarily by the non-MC neoplasm; hydroxyurea has modest utility in this setting; there is a role for allogeneic stem cell transplantation in select cases. Investigational drugs: Recent data confirms midostaurin's significant anti-MC activity in patients with advanced SM. Am. J. Hematol. 91:1147-1159, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Animesh Pardanani
- Division of Hematology Department of Medicine; Mayo Clinic; Rochester Minnesota
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Constitutive Kit activity triggers B-cell acute lymphoblastic leukemia-like disease in mice. Exp Hematol 2016; 45:45-55.e6. [PMID: 27664314 DOI: 10.1016/j.exphem.2016.09.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 08/17/2016] [Accepted: 09/14/2016] [Indexed: 11/21/2022]
Abstract
Acute lymphoblastic leukemia (ALL) is the most common childhood malignancy and, in most cases, is of pro- or pre-B cell origin (B-ALL). The receptor tyrosine kinase KIT is expressed by hematopoietic stem and precursor cells. Gain-of-function mutations of KIT cause systemic mastocytosis, which is characterized by abnormal accumulations of mast cells. We previously reported a mouse model of mastocytosis based on conditional expression of a constitutively active Kit protein. Half of these animals developed leukemic disease of B-lineage origin. Herein, we report that this condition bears striking similarities to human B-ALL. The immuno-phenotype of the leukemic cells was compatible with a pro-B-cell origin, as was the finding of immunoglobulin heavy-chain gene rearrangements in all cases, whereas light-chain loci were mostly not rearranged. Leukemogenesis was independent of pre-B-cell receptor expression. Primary leukemic cells and permanent cell lines derived from these were serially transplantable and rapidly killed the recipients. In a few animals, the leukemia was of T-cell origin with abnormal CD4/8 double-positive T-cell precursors dominating in the circulation. In summary, we report a novel ALL mouse model that may prove useful for in vivo drug testing and identification of novel oncogenic mutations and principles.
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Splenomegaly, elevated alkaline phosphatase and mutations in the SRSF2/ASXL1/RUNX1 gene panel are strong adverse prognostic markers in patients with systemic mastocytosis. Leukemia 2016; 30:2342-2350. [PMID: 27416984 DOI: 10.1038/leu.2016.190] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 06/06/2016] [Accepted: 06/10/2016] [Indexed: 01/08/2023]
Abstract
We evaluated the impact of clinical and molecular characteristics on overall survival (OS) in 108 patients with indolent (n=41) and advanced systemic mastocytosis (SM) (advSM, n=67). Organomegaly was measured by magnetic resonance imaging-based volumetry of the liver and spleen. In multivariate analysis of all patients, an increased spleen volume ⩾450 ml (hazard ratio (HR), 5.2; 95% confidence interval (CI), (2.1-13.0); P=0.003) and an elevated alkaline phosphatase (AP; HR 5.0 (1.1-22.2); P=0.02) were associated with adverse OS. The 3-year OS was 100, 77, and 39%, respectively (P<0.0001), for patients with 0 (low risk, n=37), 1 (intermediate risk, n=32) or 2 (high risk, n=39) parameters. For advSM patients with fully available clinical and molecular data (n=60), univariate analysis identified splenomegaly ⩾1200 ml, elevated AP and mutations in the SRSF2/ASXL1/RUNX1 (S/A/R) gene panel as significant prognostic markers. In multivariate analysis, mutations in S/A/R (HR 3.2 (1.1-9.6); P=0.01) and elevated AP (HR 2.6 (1.0-7.1); P=0.03) remained predictive adverse prognostic markers for OS. The 3-year OS was 76 and 38%, respectively (P=0.0003), for patients with 0-1 (intermediate risk, n=28) or 2 (high risk, n=32) parameters. We conclude that splenomegaly, elevated AP and mutations in the S/A/R gene panel are independent of the World Health Organization classification and provide the most relevant prognostic information in SM patients.
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Gotlib J, Kluin-Nelemans HC, George TI, Akin C, Sotlar K, Hermine O, Awan FT, Hexner E, Mauro MJ, Sternberg DW, Villeneuve M, Huntsman Labed A, Stanek EJ, Hartmann K, Horny HP, Valent P, Reiter A. Efficacy and Safety of Midostaurin in Advanced Systemic Mastocytosis. N Engl J Med 2016; 374:2530-41. [PMID: 27355533 DOI: 10.1056/nejmoa1513098] [Citation(s) in RCA: 318] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Advanced systemic mastocytosis comprises rare hematologic neoplasms that are associated with a poor prognosis and lack effective treatment options. The multikinase inhibitor midostaurin inhibits KIT D816V, a primary driver of disease pathogenesis. METHODS We conducted an open-label study of oral midostaurin at a dose of 100 mg twice daily in 116 patients, of whom 89 with mastocytosis-related organ damage were eligible for inclusion in the primary efficacy population; 16 had aggressive systemic mastocytosis, 57 had systemic mastocytosis with an associated hematologic neoplasm, and 16 had mast-cell leukemia. The primary outcome was the best overall response. RESULTS The overall response rate was 60% (95% confidence interval [CI], 49 to 70); 45% of the patients had a major response, which was defined as complete resolution of at least one type of mastocytosis-related organ damage. Response rates were similar regardless of the subtype of advanced systemic mastocytosis, KIT mutation status, or exposure to previous therapy. The median best percentage changes in bone marrow mast-cell burden and serum tryptase level were -59% and -58%, respectively. The median overall survival was 28.7 months, and the median progression-free survival was 14.1 months. Among the 16 patients with mast-cell leukemia, the median overall survival was 9.4 months (95% CI, 7.5 to not estimated). Dose reduction owing to toxic effects occurred in 56% of the patients; re-escalation to the starting dose was feasible in 32% of those patients. The most frequent adverse events were low-grade nausea, vomiting, and diarrhea. New or worsening grade 3 or 4 neutropenia, anemia, and thrombocytopenia occurred in 24%, 41%, and 29% of the patients, respectively, mostly in those with preexisting cytopenias. CONCLUSIONS In this open-label study, midostaurin showed efficacy in patients with advanced systemic mastocytosis, including the highly fatal variant mast-cell leukemia. (Funded by Novartis Pharmaceuticals and others; ClinicalTrials.gov number, NCT00782067.).
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Affiliation(s)
- Jason Gotlib
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Hanneke C Kluin-Nelemans
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Tracy I George
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Cem Akin
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Karl Sotlar
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Olivier Hermine
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Farrukh T Awan
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Elizabeth Hexner
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Michael J Mauro
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - David W Sternberg
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Matthieu Villeneuve
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Alice Huntsman Labed
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Eric J Stanek
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Karin Hartmann
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Hans-Peter Horny
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Peter Valent
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
| | - Andreas Reiter
- From the Hematology Division, Stanford University School of Medicine-Stanford Cancer Institute, Stanford, CA (J.G.); Faculty of Medical Sciences, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands (H.C.K.-N.); Department of Pathology, University of New Mexico, Albuquerque (T.I.G.); Mastocytosis Center, Brigham and Women's Hospital, Boston (C.A.); Institute of Pathology, Ludwig-Maximilians-University Munich, Munich (K.S., H.-P.H.), Department of Dermatology and Venereology, University of Cologne, Cologne, and University of Luebeck, Luebeck (K.H.), and Department of Hematology and Oncology, University Hospital Mannheim of the University of Heidelberg, Mannheim (A.R.) - all in Germany; University of Paris Descartes, Institut Imagine INSERM Unité 1163 and Centre National de la Recherche Scientifique ERL8654, Centre de Reference des Mastocytoses, Paris (O.H.); Division of Hematology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus (F.T.A.); Division of Hematology/Oncology, Abramson Cancer Center, University of Pennsylvania, Philadelphia (E.H.); Myeloproliferative Neoplasms Program, Memorial Sloan Kettering Cancer Center, New York (M.J.M.); Novartis Pharmaceuticals, East Hanover, NJ (D.W.S., E.J.S.); Novartis Pharma, Basel, Switzerland (M.V., A.H.L.); and the Department of Internal Medicine I, Division of Hematology and Hemostaseology, and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna (P.V.)
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Diffuse large B cell lymphoma coexistence with systemic mastocytosis. JOURNAL OF CANCER RESEARCH AND PRACTICE 2016. [DOI: 10.1016/j.jcrpr.2015.09.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Chatterjee A, Ghosh J, Kapur R. Mastocytosis: a mutated KIT receptor induced myeloproliferative disorder. Oncotarget 2016; 6:18250-64. [PMID: 26158763 PMCID: PMC4621888 DOI: 10.18632/oncotarget.4213] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 05/23/2015] [Indexed: 12/20/2022] Open
Abstract
Although more than 90% systemic mastocytosis (SM) patients express gain of function mutations in the KIT receptor, recent next generation sequencing has revealed the presence of several additional genetic and epigenetic mutations in a subset of these patients, which confer poor prognosis and inferior overall survival. A clear understanding of how genetic and epigenetic mutations cooperate in regulating the tremendous heterogeneity observed in these patients will be essential for designing effective treatment strategies for this complex disease. In this review, we describe the clinical heterogeneity observed in patients with mastocytosis, the nature of relatively novel mutations identified in these patients, therapeutic strategies to target molecules downstream from activating KIT receptor and finally we speculate on potential novel strategies to interfere with the function of not only the oncogenic KIT receptor but also epigenetic mutations seen in these patients.
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Affiliation(s)
- Anindya Chatterjee
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Joydeep Ghosh
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Reuben Kapur
- Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Department of Microbiology and Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Department of Molecular Biology and Biochemistry, Indiana University School of Medicine, Indianapolis, Indiana, USA
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Ustun C, Gotlib J, Popat U, Artz A, Litzow M, Reiter A, Nakamura R, Kluin-Nelemans HC, Verstovsek S, Gajewski J, Perales MA, George T, Shore T, Sperr W, Saber W, Kota V, Yavuz AS, Pullarkat V, Rogosheske J, Hogan W, Van Besien K, Hagglund H, Damaj G, Arock M, Horny HP, Metcalfe DD, Deeg HJ, Devine S, Weisdorf D, Akin C, Valent P. Consensus Opinion on Allogeneic Hematopoietic Cell Transplantation in Advanced Systemic Mastocytosis. Biol Blood Marrow Transplant 2016; 22:1348-1356. [PMID: 27131865 DOI: 10.1016/j.bbmt.2016.04.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Accepted: 04/20/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Celalettin Ustun
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota.
| | - Jason Gotlib
- Division of Hematology, Stanford University, Stanford, California
| | - Uday Popat
- Department of Stem Cell Transplantation, University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Andrew Artz
- Section of Hematology/Oncology, Department of Medicine, University of Chicago, Chicago, Illinois
| | - Mark Litzow
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Minneapolis, Minnesota
| | - Andreas Reiter
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - Ryotaro Nakamura
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California
| | - Hanneke C Kluin-Nelemans
- Department of Hematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Srdan Verstovsek
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - James Gajewski
- Department of Hematology, Oregon Health and Science University, Portland, Oregon
| | - Miguel-Angel Perales
- Division of Hematologic Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Tracy George
- Department of Pathology, University of New Mexico, Albuquerque, New Mexico
| | - Tsiporah Shore
- Division of Hematology and Oncology, Weill Cornell Medical College, New York, New York
| | - Wolfgang Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria
| | - Wael Saber
- Department of Medicine, Center for International Blood and Marrow Transplant Research, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Vamsi Kota
- Division of Hematology, Department of Hematology and Oncology, Winship Cancer Institute of Emory University, Atlanta, Georgia
| | - Akif Selim Yavuz
- Division of Hematology, Istanbul Medical School, University of Istanbul, Istanbul, Turkey
| | - Vinod Pullarkat
- Department of Hematology/Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California
| | - John Rogosheske
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - William Hogan
- Division of Hematology, Department of Internal Medicine, Mayo Clinic, Minneapolis, Minnesota
| | - Koen Van Besien
- Department of Medicine, Weill Cornell Medical College, New York, New York
| | - Hans Hagglund
- Division of Hematology, Department of Medical Sciences Uppsala University, Uppsala, Sweden
| | - Gandhi Damaj
- Department of Hematology, Hematology Institute, University Hospital, School of Medicine, University of Basse-Normandie, Caen, France
| | - Michel Arock
- Cellular and Molecular Oncology Unit, CNRS UMR 8113, Ecole Normale Supériede Cachan, Cachan, France and Laboratoire d'Hématologie, Centre Hospitalier Universitaire Pitié-Salpêtrière, Paris, France
| | | | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - H Joachim Deeg
- Fred Hutchinson Cancer Research Center and the University of Washington School of Medicine, University of Washington, Seattle, Washington
| | - Steven Devine
- Division of Hematology, Department of Medicine, Ohio State University and the Ohio State University Comprehensive Cancer Center, Ohio
| | - Daniel Weisdorf
- Division of Hematology, Oncology, and Transplantation, University of Minnesota, Minneapolis, Minnesota
| | - Cem Akin
- Division of Rheumatology, Immunology, and Allergy, Harvard Medical School, Brigham and Women's Hospital, Boston, Massachusetts
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology and Ludwig Boltzmann Cluster Oncology, Medical University of Vienna, Vienna, Austria
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68
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KIT D816V–mutated bone marrow mesenchymal stem cells in indolent systemic mastocytosis are associated with disease progression. Blood 2016; 127:761-8. [DOI: 10.1182/blood-2015-07-655100] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 11/19/2015] [Indexed: 02/06/2023] Open
Abstract
Key Points
Acquisition of the KIT D816V mutation in an early pluripotent progenitor cell confers ISM cases a greater risk for disease progression. Despite the early acquisition of the KIT mutation, onset of clinical symptoms of ISM is often delayed to middle adulthood.
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69
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Frederiksen JK, Shao L, Bixby DL, Ross CW. Shared clonal cytogenetic abnormalities in aberrant mast cells and leukemic myeloid blasts detected by single nucleotide polymorphism microarray-based whole-genome scanning. Genes Chromosomes Cancer 2016; 55:389-96. [PMID: 26865278 DOI: 10.1002/gcc.22342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 12/07/2015] [Accepted: 12/10/2015] [Indexed: 01/10/2023] Open
Abstract
Systemic mastocytosis (SM) is characterized by a clonal proliferation of aberrant mast cells within extracutaneous sites. In a subset of SM cases, a second associated hematologic non-mast cell disease (AHNMD) is also present, usually of myeloid origin. Polymerase chain reaction and targeted fluorescence in situ hybridization studies have provided evidence that, in at least some cases, the aberrant mast cells are related clonally to the neoplastic cells of the AHNMD. In this work, a single nucleotide polymorphism microarray (SNP-A) was used to characterize the cytogenetics of the aberrant mast cells from a patient with acute myeloid leukemia and concomitant mast cell leukemia associated with a KIT D816A mutation. The results demonstrate the presence of shared cytogenetic abnormalities between the mast cells and myeloid blasts, as well as additional abnormalities within mast cells (copy-neutral loss of heterozygosity) not detectable by routine karyotypic analysis. To our knowledge, this work represents the first application of SNP-A whole-genome scanning to the detection of shared cytogenetic abnormalities between the two components of a case of SM-AHNMD. The findings provide additional evidence of a frequent clonal link between aberrant mast cells and cells of myeloid AHNMDs, and also highlight the importance of direct sequencing for identifying uncommon activating KIT mutations.
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Affiliation(s)
| | - Lina Shao
- Department of Pathology, University of Michigan, Ann Arbor, MI
| | - Dale L Bixby
- Division of Hematology-Oncology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI
| | - Charles W Ross
- Department of Pathology, University of Michigan, Ann Arbor, MI
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70
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Jawhar M, Schwaab J, Schnittger S, Meggendorfer M, Pfirrmann M, Sotlar K, Horny HP, Metzgeroth G, Kluger S, Naumann N, Haferlach C, Haferlach T, Valent P, Hofmann WK, Fabarius A, Cross NCP, Reiter A. Additional mutations in SRSF2, ASXL1 and/or RUNX1 identify a high-risk group of patients with KIT D816V(+) advanced systemic mastocytosis. Leukemia 2015; 30:136-43. [PMID: 26464169 DOI: 10.1038/leu.2015.284] [Citation(s) in RCA: 162] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 09/25/2015] [Accepted: 09/29/2015] [Indexed: 12/21/2022]
Abstract
Most patients with KIT D816V(+) advanced systemic mastocytosis (SM) are characterized by somatic mutations in additional genes. We sought to clarify the prognostic impact of such mutations. Genotype and clinical characteristics of 70 multi-mutated KIT D816V(+) advanced SM patients were included in univariate and multivariate analyses. The most frequently identified mutated genes were TET2 (n=33 of 70 patients), SRSF2 (n=30), ASXL1 (n=20), RUNX1 (n=16) and JAK2 (n=11). In univariate analysis, overall survival (OS) was adversely influenced by mutations in SRSF2 (P<0.0001), ASXL1 (P=0.002) and RUNX1 (P=0.03), but was not influenced by mutations in TET2 or JAK2. In multivariate analysis, SRSF2 and ASXL1 remained the most predictive adverse indicators concerning OS. Furthermore, we found that inferior OS and adverse clinical characteristics were significantly influenced by the number of mutated genes in the SRSF2/ASXL1/RUNX1 (S/A/R) panel (P<0.0001). In conclusion, the presence and number of mutated genes within the S/A/R panel are adversely associated with advanced disease and poor survival in KIT D816V(+) SM. On the basis of these findings, inclusion of molecular markers should be considered in upcoming prognostic scoring systems for patients with SM.
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Affiliation(s)
- M Jawhar
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - J Schwaab
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | | | | | - M Pfirrmann
- Institute for Medical Informatics, Biometry and Epidemiology, Ludwig-Maximilians University, Munich, Germany
| | - K Sotlar
- Institute of Pathology, Ludwig-Maximilians University, Munich, Germany
| | - H-P Horny
- Institute of Pathology, Ludwig-Maximilians University, Munich, Germany
| | - G Metzgeroth
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - S Kluger
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - N Naumann
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - C Haferlach
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - T Haferlach
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - P Valent
- Division of Hematology and Ludwig Boltzmann Cluster Oncology, Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
| | - W-K Hofmann
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - A Fabarius
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
| | - N C P Cross
- Wessex Regional Genetics Laboratory, Salisbury, UK.,Faculty of Medicine, University of Southampton, Southampton, UK
| | - A Reiter
- Department of Hematology and Oncology, University Medical Centre Mannheim, Mannheim, Germany
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71
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Tüysüz G, Özdemir N, Apak H, Kutlubay Z, Demirkesen C, Celkan T. Childhood mastocytosis: results of a single center. TURK PEDIATRI ARSIVI 2015; 50:108-13. [PMID: 26265895 PMCID: PMC4523983 DOI: 10.5152/tpa.2015.2332] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 01/27/2015] [Indexed: 11/22/2022]
Abstract
AIM We aimed to retrospectively evaluate histopathological, demographic and clinical findings of children with mastocytosis diagnosed with mastocytosis in our clinic. MATERIAL AND METHODS The files of 21 patients diagnosed with mastocytosis between 2000 and 2014 in our clinic were retrospectively analyzed. RESULTS All patients had cutaneous mastocytosis, 19 patients had urticaria pigmentosa and 2 patients had mastocytoma. The male-female ratio was: 1/1.6. The median age for onset of disease was 12.1 months and the disease occured in the newborn period in 3 patients. While all patients had eruption, 10 patients had pruritis, 1 patient had a bullous formation, 1 patient had abdominal pain and 1 patient had attacks of redness throughout the body and a sense of burning in the chest. Two patients had a positive familial history. The diagnosis was confirmed with skin biopsy in all patients. The median follow up time of the patients were 5 years. The patients were treated with H1, H2 antihistaminics, local moisturizing creams and topical corticosteroid drugs. The lesions resolved completely in 4 patients who reached to puberty and 7 patients had marked improvement in a 5.5 year-follow-up period. Ten patients had stabile lesions in a 3.6 year-follow-up period. CONCLUSIONS Most cases of childhood mastocytosis are observed in the form of cutaneous mastocytosis. The prognosis is good; the disease limits itself and is prone to regress in the adolescent period.
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Affiliation(s)
- Gülen Tüysüz
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
| | - Nihal Özdemir
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
| | - Hilmi Apak
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
| | - Zekayi Kutlubay
- Department of Dermatology, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
| | - Cuyan Demirkesen
- Department of Pathology, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
| | - Tiraje Celkan
- Department of Pediatrics, Division of Pediatric Hematology and Oncology, İstanbul University Cerrahpaşa Faculty of Medicine, İstanbul, Turkey
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72
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Arock M, Sotlar K, Akin C, Broesby-Olsen S, Hoermann G, Escribano L, Kristensen TK, Kluin-Nelemans HC, Hermine O, Dubreuil P, Sperr WR, Hartmann K, Gotlib J, Cross NCP, Haferlach T, Garcia-Montero A, Orfao A, Schwaab J, Triggiani M, Horny HP, Metcalfe DD, Reiter A, Valent P. KIT mutation analysis in mast cell neoplasms: recommendations of the European Competence Network on Mastocytosis. Leukemia 2015; 29:1223-32. [PMID: 25650093 PMCID: PMC4522520 DOI: 10.1038/leu.2015.24] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Revised: 01/01/2015] [Accepted: 01/09/2015] [Indexed: 12/20/2022]
Abstract
Although acquired mutations in KIT are commonly detected in various categories of mastocytosis, the methodologies applied to detect and quantify the mutant type and allele burden in various cells and tissues are poorly defined. We here propose a consensus on methodologies used to detect KIT mutations in patients with mastocytosis at diagnosis and during follow-up with sufficient precision and sensitivity in daily practice. In addition, we provide recommendations for sampling and storage of diagnostic material as well as a robust diagnostic algorithm. Using highly sensitive assays, KIT D816V can be detected in peripheral blood leukocytes from most patients with systemic mastocytosis (SM) that is a major step forward in screening and SM diagnosis. In addition, the KIT D816V allele burden can be followed quantitatively during the natural course or during therapy. Our recommendations should greatly facilitate diagnostic and follow-up investigations in SM in daily practice as well as in clinical trials. In addition, the new tools and algorithms proposed should lead to a more effective screen, early diagnosis of SM and help to avoid unnecessary referrals.
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Affiliation(s)
- Michel Arock
- Molecular Oncology and Pharmacology, LBPA CNRS UMR8113, Ecole Normale Supérieure de Cachan, Cachan, France
- Laboratory of Hematology, Groupe Hospitalier Pitié-Salpêtrière, Paris, France
| | - Karl Sotlar
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Cem Akin
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, USA
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Gregor Hoermann
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Luis Escribano
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC, CSIC/USAL), IBSAL and Department of Medicine, University of Salamanca, Salamanca, Spain
| | | | - Hanneke C. Kluin-Nelemans
- Department of Hematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Olivier Hermine
- Clinical Hematology Department, Faculty of Medicine and AP-HP Necker-Enfants Malades, Paris Descartes University, Paris, France
| | - Patrice Dubreuil
- Signaling, Hematopoiesis and Mechanism of Oncogenesis, Inserm U1068, CRCM, Marseille, France
- Institut Paoli-Calmettes, Marseille, France
- Aix-Marseille University, UM 105, Marseille, France
- CNRS, UMR7258, CRCM, Marseille; France
| | - Wolfgang R. Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Karin Hartmann
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - Jason Gotlib
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, USA
| | - Nicholas CP Cross
- Wessex Regional Genetics Laboratory, Salisbury, and Faculty of Medicine, University of Southampton, Southampton, England
| | | | - Andres Garcia-Montero
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC, CSIC/USAL), IBSAL and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC, CSIC/USAL), IBSAL and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Juliana Schwaab
- III. Medizinische Klinik, Hematology and Oncology, Universitätsmedizin Mannheim, Mannheim, Germany
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | | | - Andreas Reiter
- III. Medizinische Klinik, Hematology and Oncology, Universitätsmedizin Mannheim, Mannheim, Germany
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
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73
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Pardanani A. Systemic mastocytosis in adults: 2015 update on diagnosis, risk stratification, and management. Am J Hematol 2015; 90:250-62. [PMID: 25688753 DOI: 10.1002/ajh.23931] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 12/24/2014] [Indexed: 12/20/2022]
Abstract
DISEASE OVERVIEW Systemic mastocytosis (SM) results from a clonal proliferation of abnormal mast cells (MC) in one or more extracutaneous organs. DIAGNOSIS The major criterion is presence of multifocal clusters of morphologically abnormal MC in the bone marrow. Minor diagnostic criteria include elevated serum tryptase level, abnormal MC expression of CD25 and/or CD2, and presence of KITD816V. RISK STRATIFICATION The 2008 World Health Organization classification of SM has been shown to be prognostically relevant. Classification of SM patients into indolent SM (ISM), aggressive SM (ASM), SM associated with a clonal non-MC lineage disease (SM-AHNMD), and mast cell leukemia (MCL) subgroups is a useful first step in establishing prognosis. MANAGEMENT SM treatment is generally palliative. ISM patients have a normal life expectancy and receive symptom-directed therapy; infrequently, cytoreductive therapy may be indicated for refractory symptoms. ASM patients have disease-related organ dysfunction; interferon-α (+/-corticosteroids) can control dermatological, hematological, gastrointestinal, skeletal, and mediator-release symptoms, but is hampered by poor tolerability. Similarly, cladribine has broad therapeutic activity, with particular utility when rapid MC debulking is indicated; the main toxicity is myelosuppression. Imatinib has a therapeutic role in the presence of an imatinib-sensitive KIT mutation or in KITD816-unmutated patients. Treatment of SM-AHNMD is governed primarily by the non-MC neoplasm; hydroxyurea has modest utility in this setting; there is a role for allogeneic stem cell transplantation in select cases. Investigational Drugs: Recent data confirms midostaurin's significant anti-MC activity in patients with advanced SM.
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Affiliation(s)
- Animesh Pardanani
- Division of Hematology; Mayo Clinic; Rochester Minnesota
- Department of Medicine; Mayo Clinic; Rochester Minnesota
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74
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Molderings GJ. The genetic basis of mast cell activation disease - looking through a glass darkly. Crit Rev Oncol Hematol 2015; 93:75-89. [DOI: 10.1016/j.critrevonc.2014.09.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 08/14/2014] [Accepted: 09/16/2014] [Indexed: 01/08/2023] Open
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75
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Jawhar M, Schwaab J, Schnittger S, Sotlar K, Horny HP, Metzgeroth G, Müller N, Schneider S, Naumann N, Walz C, Haferlach T, Valent P, Hofmann WK, Cross NCP, Fabarius A, Reiter A. Molecular profiling of myeloid progenitor cells in multi-mutated advanced systemic mastocytosis identifies KIT D816V as a distinct and late event. Leukemia 2015; 29:1115-22. [PMID: 25567135 DOI: 10.1038/leu.2015.4] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 10/17/2014] [Accepted: 11/07/2014] [Indexed: 12/12/2022]
Abstract
To explore the molecular profile and its prognostic implication in systemic mastocytosis (SM), we analyzed the mutation status of granulocyte-macrophage colony-forming progenitor cells (CFU-GM) in patients with KIT D816V(+) indolent SM (ISM, n=4), smoldering SM (SSM, n=2), aggressive SM (ASM, n=1), SM with associated clonal hematologic non-mast cell lineage disorder (SM-AHNMD, n=5) and ASM-AHNMD (n=7). All patients with (A)SM-AHNMD (n=12) carried 1-4 (median 3) additional mutations in 11 genes tested, most frequently TET2, SRSF2, ASXL1, CBL and EZH2. In multi-mutated (A)SM-AHNMD, KIT D816V(+) single-cell-derived CFU-GM colonies were identified in 8/12 patients (median 60%, range 0-95). Additional mutations were identified in CFU-GM colonies in all patients, and logical hierarchy analysis indicated that mutations in TET2, SRSF2 and ASXL1 preceded KIT D816V. In ISM/SSM, no additional mutations were detected and CFU-GM colonies were exclusively KIT D816V(-). These data indicate that (a) (A)SM-AHNMD is a multi-mutated neoplasm, (b) mutations in TET2, SRSF2 or ASXL1 precede KIT D816V in ASM-AHNMD,
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Affiliation(s)
- M Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - J Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | | | - K Sotlar
- Department of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - H-P Horny
- Department of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - G Metzgeroth
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - N Müller
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - S Schneider
- Department of Clinical Chemistry, University Hospital Mannheim, Mannheim, Germany
| | - N Naumann
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - C Walz
- Department of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | | | - P Valent
- Division of Hematology and Ludwig Boltzmann Cluster Oncology, Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria
| | - W-K Hofmann
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - N C P Cross
- 1] Wessex Regional Genetics Laboratory, Salisbury, UK [2] Faculty of Medicine, University of Southampton, Southampton, UK
| | - A Fabarius
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - A Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
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Abstract
SUMMARY Mast cell leukemia (MCL) is a rare subtype of systemic mastocytosis. In MCL the numbers of mast cells exceed 19% of nucleated cells in bone marrow and/or 10% of circulating leukocytes in peripheral blood. Primary MCL must be distinguished from secondary MCL evolving from another subvariant of systemic mastocytosis or from mast cell sarcoma. Acute MCL with a poor prognosis is distinguished from the more indolent chronic MCL. Serum tryptase is significantly elevated in almost all MCL patients and activating point mutations at codon 816 of KIT (usually KIT D816V) are encountered in about 70%. Regarding differential diagnosis, other ‘tryptase-positive’ or ‘metachromatic’ leukemias must be considered, including myelomastocytic leukemia and tryptase-positive acute myeloid leukemia but also acute and chronic basophilic leukemias.
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Affiliation(s)
- Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Andreas Reiter
- III Medical Clinic, University Hospital Mannheim, Germany
| | - Karl Sotlar
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Austria
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77
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Lange M, yawrocki A, Nedoszytko B, Wasag B, Niedoszytko M, Jassem E, Nowicki R, ymijewski MA, Biernat W. Does the Aberrant Expression of CD2 and CD25 by Skin Mast Cells Truly Correlate with Systemic Involvement in Patients Presenting with Mastocytosis in the Skin? Int Arch Allergy Immunol 2014; 165:104-10. [DOI: 10.1159/000368799] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 10/01/2014] [Indexed: 11/19/2022] Open
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78
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Teodosio C, Mayado A, Sánchez-Muñoz L, Morgado JM, Jara-Acevedo M, Álvarez-Twose I, García-Montero AC, Matito A, Caldas C, Escribano L, Orfao A. The immunophenotype of mast cells and its utility in the diagnostic work-up of systemic mastocytosis. J Leukoc Biol 2014; 97:49-59. [PMID: 25381388 DOI: 10.1189/jlb.5ru0614-296r] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
SM comprises a heterogeneous group of disorders, characterized by an abnormal accumulation of clonal MCs in 1 or more tissues, frequently involving the skin and BM. Despite the fact that most adult patients (>90%) carry the same genetic lesion (D816V KIT mutation), the disease presents with multiple variants with very distinct clinical and biologic features, a diverse prognosis, and different therapeutic requirements. Recent advances in the standardization of the study of BM MC by MFC allowed reproducible identification and characterization of normal/reactive MCs and their precursors, as well as the establishment of the normal MC maturational profiles. Analysis of large groups of patients versus normal/reactive samples has highlighted the existence of aberrant MC phenotypes in SM, which are essential for the diagnosis of the disease. In turn, 3 clearly distinct and altered maturation-associated immunophenotypic profiles have been reported recently in SM, which provide criteria for the distinction between ISM patients with MC-restricted and multilineage KIT mutation; thus, immunphenotyping also contributes to prognostic stratification of ISM, particularly when analysis of the KIT mutation on highly purified BM cells is not routinely available in the diagnostic work-up of the disease.
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Affiliation(s)
- Cristina Teodosio
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Andrea Mayado
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Laura Sánchez-Muñoz
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - José M Morgado
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - María Jara-Acevedo
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Ivan Álvarez-Twose
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Andrés C García-Montero
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Almudena Matito
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Caldas Caldas
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Luis Escribano
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
| | - Alberto Orfao
- *Servicio General de Citometría, Centro de Investigación del Cáncer (Instituto de Biologia Molecular y Celular del Cancer-Consejo Superior de Investigaciones Cientificas/University of Salamanca and Instituto de Investigación Biomédica de Salamanca) and Departamento de Medicina, Universidad de Salamanca, Salamanca, Spain; and Centro de Estudios de Mastocitosis de Castilla La Mancha, Hospital Virgen del Valle, Toledo, Spain
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An adult patient with systemic mastocytosis and B-acute lymphoblastic leukemia. Case Rep Med 2014; 2014:526129. [PMID: 25431599 PMCID: PMC4238232 DOI: 10.1155/2014/526129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 10/09/2014] [Accepted: 10/14/2014] [Indexed: 11/17/2022] Open
Abstract
Mastocytosis is a myeloproliferative neoplasm characterized by clonal expansion of abnormal mast cells, ranging from the cutaneous forms of the disease to mast cell leukemia. In a significant proportion of patients, systemic mastocytosis (SM) coexists with another hematologic malignancy, termed systemic mastocytosis with an associated hematologic nonmast cell lineage disorder (SM-AHNMD). Despite the pronounced predominance of concomitant myeloid neoplasms, the much more unusual coexistence of lymphoproliferative diseases has also been reported. Imatinib mesylate (IM) has a role in the treatment of SM in the absence of the KITD816V mutation. In the setting of SM-AHNMD, eradicating the nonmast cell malignant clone greatly affects prognosis. We report a case of an adult patient with SM associated with B-lineage acute lymphoblastic leukemia (B-ALL). Three cases of concurrent adult ALL and mastocytosis have been reported in the literature, one concerning SM and two concerning cutaneous mastocytosis (CM), as well as six cases of concomitant CM and ALL in children.
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80
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Federmann B, Abele M, Rosero Cuesta DS, Vogel W, Boiocchi L, Kanz L, Quintanilla-Martinez L, Orazi A, Bonzheim I, Fend F. The detection of SRSF2 mutations in routinely processed bone marrow biopsies is useful in the diagnosis of chronic myelomonocytic leukemia. Hum Pathol 2014; 45:2471-9. [PMID: 25305095 DOI: 10.1016/j.humpath.2014.08.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 08/21/2014] [Accepted: 08/24/2014] [Indexed: 11/25/2022]
Abstract
Diagnosis of chronic myelomonocytic leukemia (CMML) is based on a combination of clinical, laboratory, and morphological parameters, including persistent peripheral blood monocytosis. Recently, mutations of serine/arginine-rich splicing factor 2 (SRSF2) have been identified in 40% to 50% of CMMLs and occasionally in other myeloid disorders. In this study, we established a robust assay for the detection of SRSF2 mutations in decalcified, paraffin-embedded bone marrow (BM) biopsies and investigated its diagnostic utility. BM biopsies of 78 patients with myeloid neoplasms, including 36 CMMLs, 22 myelodysplastic syndromes (MDS), and 20 Ph- myeloproliferative neoplasms (MPN) were analyzed. The region around hot spot P95 in exon 1 of SRSF2 was amplified and bidirectionally sequenced. In addition, a restriction fragment length polymorphism analysis was established. The JAK2 V617F mutation was investigated by allele-specific polymerase chain reaction. SRSF2 mutations were identified in 16 (44%) of 36 CMMLs, including 1 of 3 cases with associated systemic mastocytosis, 4 (20%) of 20 Ph- MPN, and 1 (4.5%) of 22 MDS. Restriction fragment length polymorphism analysis detected all mutations with the exception of a single P95A. Of note, 2 cases of JAK2 V617F+ primary myelofibrosis with SRSF2 mutation initially were diagnosed as CMML based on significant peripheral blood monocytosis. In CMML, no correlation with histopathology and/or clinical parameters was observed, but SRSF2 mutations were associated with normal karyotype (P < .001). In summary, SRSF2 mutations are frequent in CMML and a useful diagnostic feature demonstrable in BM biopsies, allowing a definitive diagnosis for cases with minimal dysplasia and normal karyotype. The role of SRSF2 mutations in cases with hybrid features between primary myelofibrosis and CMML needs further investigation.
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Affiliation(s)
- Birgit Federmann
- Institute of Pathology and Neuropathology Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany
| | - Manuel Abele
- Institute of Pathology and Neuropathology Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany
| | - David Santiago Rosero Cuesta
- Institute of Pathology and Neuropathology Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany; Department of Pathology, Hospital Universitario Miguel Servet, 50001 Zaragoza, Spain
| | - Wichard Vogel
- Department of Internal Medicine, Hematology and Oncology, Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany
| | - Leonardo Boiocchi
- Department of Molecular and Translational Medicine, Pathology Section, University of Brescia, 25100 Brescia, Italy
| | - Lothar Kanz
- Department of Pathology, Hospital Universitario Miguel Servet, 50001 Zaragoza, Spain
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany
| | - Attilio Orazi
- Department of Pathology and Laboratory Medicine, Weill Cornell Medical College/New York Presbyterian Hospital, 10065 NY, USA
| | - Irina Bonzheim
- Institute of Pathology and Neuropathology Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany
| | - Falko Fend
- Institute of Pathology and Neuropathology Comprehensive Cancer Center Tuebingen and University of Tuebingen, 72076 Tuebingen, Germany.
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Rechsteiner M, Müller R, Reineke T, Goede J, Bohnert A, Zhong Q, Manz MG, Moch H, Wild PJ, Zimmermann DR, Tinguely M. Modelling of a genetically diverse evolution of Systemic Mastocytosis with Chronic Myelomonocytic Leukemia (SM-CMML) by Next Generation Sequencing. Exp Hematol Oncol 2014; 3:18. [PMID: 25032071 PMCID: PMC4100747 DOI: 10.1186/2162-3619-3-18] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2014] [Accepted: 07/01/2014] [Indexed: 11/30/2022] Open
Abstract
Background Systemic mastocytosis (SM) is a heterogenous, clonal mast cell (MC) proliferation, rarely associated with clonal hematologic non-mast cell lineage disease (SM-AHNMD). KITD816V is regarded as driver-mutation in SM-AHNMD. Methods DNA isolated from peripheral blood (PB) of an SM-CMML patient was investigated with targeted next generation sequencing. Variants were verified by Sanger sequencing and further characterized in the SM part of the bone marrow trephine (BMT), normal tissue, and FACS sorted PB cell subpopulations. Findings Low coverage deep-sequencing (mean 10x) on a GS 454 Junior revealed two as yet unreported SNVs (CBFA2T3 and CLTCL1), both germ-line mutations. High coverage (mean 1674x) targeted re-sequencing on an Ion Proton revealed 177 variants in coding regions. Excluding SNPs, the final list comprised 11 variants. Among these, TET2 (p.Thr1027fs, p.Cys1263Ser) and RUNX1 (p.Asn109Ser) were identified in in the peripheral blood and the SM part of BMT, but not in normal tissue. Furthermore, Sanger sequencing of PB cells revealed similar signal intensities for both TET2 mutations in FACS sorted CD34+ precursor cells and CD16+ granulocytes comparable to signals in the SM part of BMT. In contrast, RUNX1 exhibited a double intensity in CD34+ cells compared to the SM part of BMT and a homozygous variant signal in granulocytes. Both TET2 and RUNX1 mutations were not detectable in B- and T-cells. Conclusion We present a heterozygous triple-mutation pattern (KIT, TET2, RUNX1) in mast cells (SM disease part) with additional LOH of RUNX1 in granulocytes (CMML disease part). These identified mutations allow a more detailed insight into a multistep pathogenesis which suggests a common tumor progenitor in SM-CMML.
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Affiliation(s)
- Markus Rechsteiner
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Rouven Müller
- Clinics for Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Tanja Reineke
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Jeroen Goede
- Clinics for Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Annette Bohnert
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Qing Zhong
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Markus G Manz
- Clinics for Hematology, University Hospital Zurich, Zurich, Switzerland
| | - Holger Moch
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Peter J Wild
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Dieter R Zimmermann
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland
| | - Marianne Tinguely
- Institute of Surgical Pathology, University Hospital Zurich, Zurich, Switzerland ; Kempf and Pfaltz, Histological Diagnostics, Seminarstr. 1, 8042 Zurich, Switzerland
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82
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Bibi S, Langenfeld F, Jeanningros S, Brenet F, Soucie E, Hermine O, Damaj G, Dubreuil P, Arock M. Molecular Defects in Mastocytosis. Immunol Allergy Clin North Am 2014; 34:239-62. [DOI: 10.1016/j.iac.2014.01.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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83
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The FIP1L1-PDGFRA fusion gene and the KIT D816V mutation are coexisting in a small subset of myeloid/lymphoid neoplasms with eosinophilia. Blood 2014; 123:595-7. [PMID: 24458279 DOI: 10.1182/blood-2013-10-530642] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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84
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Damaj G, Joris M, Chandesris O, Hanssens K, Soucie E, Canioni D, Kolb B, Durieu I, Gyan E, Livideanu C, Chèze S, Diouf M, Garidi R, Georgin-Lavialle S, Asnafi V, Lhermitte L, Lavigne C, Launay D, Arock M, Lortholary O, Dubreuil P, Hermine O. ASXL1 but not TET2 mutations adversely impact overall survival of patients suffering systemic mastocytosis with associated clonal hematologic non-mast-cell diseases. PLoS One 2014; 9:e85362. [PMID: 24465546 PMCID: PMC3897447 DOI: 10.1371/journal.pone.0085362] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2013] [Accepted: 11/25/2013] [Indexed: 01/08/2023] Open
Abstract
Systemic mastocytosis with associated hematologic clonal non-mast cell disease (SM-AHNMD) is a rare and heterogeneous subtype of SM and few studies on this specific entity have been reported. Sixty two patients with Systemic mastocytosis with associated hematologic clonal non-mast cell disease (SM-AHNMD) were presented. Myeloid AHNMD was the most frequent (82%) cases. This subset of patients were older, had more cutaneous lesions, splenomegaly, liver enlargement, ascites; lower bone mineral density and hemoglobin levels and higher tryptase level than lymphoid AHNMD. Defects in KIT, TET2, ASXL1 and CBL were positive in 87%, 27%, 14%, and 11% of cases respectively. The overall survival of patients with SM-AHNMD was 85.2 months. Within the myeloid group, SM-MPN fared better than SM-MDS or SM-AML (p = 0.044,). In univariate analysis, the presence of C-findings, the AHNMD subtypes (SM-MDS/CMML/AML versus SM-MPN/hypereosinophilia) (p = 0.044), Neutropenia (p = 0.015), high monocyte level (p = 0.015) and the presence of ASXL1 mutation had detrimental effects on OS (p = 0.007). In multivariate analysis and penalized Cox model, only the presence of ASXL1 mutation remained an independent prognostic factor that negatively affected OS (p = 0.035). SM-AHNMD is heterogeneous with variable prognosis according to the type of the AHNMD. ASXL1 is mutated in a subset of myeloid AHNMD and adversely impact on OS.
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Affiliation(s)
- Gandhi Damaj
- Service d'Hématologie, Centre Hospitalier Universitaire, Hôpital Sud; Amiens, France
- Centre de Référence des Mastocytoses, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
- CNRS UMR 8147 and Institut Imagine, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
- * E-mail:
| | - Magalie Joris
- Service d'Hématologie, Centre Hospitalier Universitaire, Hôpital Sud; Amiens, France
| | - Olivia Chandesris
- Centre de Référence des Mastocytoses, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
- Service d'Hématologie Adulte, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
| | - Katia Hanssens
- Inserm, U1068, CRCM, (Signaling, Hematopoiesis and Mechanism of Oncogenesis); Institut Paoli-Calmettes,Marseille; Aix-Marseille Univ; CNRS, UMR7258, Marseille, France
| | - Erinn Soucie
- Inserm, U1068, CRCM, (Signaling, Hematopoiesis and Mechanism of Oncogenesis); Institut Paoli-Calmettes,Marseille; Aix-Marseille Univ; CNRS, UMR7258, Marseille, France
| | - Danielle Canioni
- Service d'Anatomo-pathologie, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
| | - Brigitte Kolb
- Service d'Hématologie, Centre Hospitalier Universitaire, Reims, France
| | - Isabelle Durieu
- Service de médecine interne, Groupe Hospitalier Sud. Hospices Civils, Lyon, France
| | - Emanuel Gyan
- Service d'Hématologie et thérapie cellulaire, CIC INSERMU202, Centre Hospitalier Universitaire, Tours, France
| | - Cristina Livideanu
- Département de Dermatologie, Centre Hospitalier Universitaire, Toulouse, France
| | - Stephane Chèze
- Service d'Hématologie, Centre Hospitalier Universitaire, Caen, France
| | - Momar Diouf
- Département de bio-statistiques et de Recherche clinique, Centre Hospitalier Universitaire, Amiens, France
| | - Reda Garidi
- Service d'Hématologie, Centre Hospitalier, St Quentin, France
| | - Sophie Georgin-Lavialle
- Service de Médecine Interne, Hôpital Tenon, Assistance Publique-Hôpitaux, Université Pierre et Marie Curie, Paris, France
| | - Vahid Asnafi
- Laboratoire d'hématologie Biologique et UMR CNRS 8147, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et Assistance Publique-Hôpitaux de Paris (AP-HP) Necker-Enfants Malades, Paris, France
| | - Ludovic Lhermitte
- Laboratoire d'hématologie Biologique et UMR CNRS 8147, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et Assistance Publique-Hôpitaux de Paris (AP-HP) Necker-Enfants Malades, Paris, France
| | - Christian Lavigne
- Service d'Hématologie, Centre Hospitalier Universitaire, Angers, France
| | - David Launay
- Service de Médecine Interne, CHRU, Lille, France
| | - Michel Arock
- CNRS UMR 8113, Laboratoire de Biologie et Pharmacologie Appliquée, Ecole Normale Supérieure, Cachan, France
- Laboratoire Central d'Hématologie, Groupe Hospitalier Pitié-Salpetrière, Paris, France
| | - Olivier Lortholary
- Service de Médecine Interne et de Maladie Infectieuses, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
| | - Patrice Dubreuil
- Inserm, U1068, CRCM, (Signaling, Hematopoiesis and Mechanism of Oncogenesis); Institut Paoli-Calmettes,Marseille; Aix-Marseille Univ; CNRS, UMR7258, Marseille, France
| | - Olivier Hermine
- Centre de Référence des Mastocytoses, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
- CNRS UMR 8147 and Institut Imagine, AP-HP, Hôpital Necker-Enfants Malades, Paris, France
- Service d'Hématologie Adulte, Université Paris Descartes, Paris Sorbonne Cité, Faculté de Médecine et AP-HP Necker-Enfants Malades, Paris, France
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85
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Sperr WR, Valent P. Diagnosis, progression patterns and prognostication in mastocytosis. Expert Rev Hematol 2014; 5:261-74. [DOI: 10.1586/ehm.12.12] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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86
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Adult-onset mastocytosis in the skin is highly suggestive of systemic mastocytosis. Mod Pathol 2014; 27:19-29. [PMID: 23807778 DOI: 10.1038/modpathol.2013.117] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 04/30/2013] [Accepted: 04/30/2013] [Indexed: 11/08/2022]
Abstract
Adult-onset urticaria pigmentosa/mastocytosis in the skin almost always persists throughout life. The prevalence of systemic mastocytosis in such patients is not precisely known. Bone marrow biopsies from 59 patients with mastocytosis in the skin and all available skin biopsies (n=27) were subjected to a meticulous cytological, histological, immunohistochemical, and molecular analysis for the presence of WHO-defined diagnostic criteria for systemic mastocytosis: compact mast cell infiltrates (major criterion); atypical mast cell morphology, KIT D816V, abnormal expression of CD25 by mast cells, and serum tryptase levels >20 ng/ml (minor criteria). Systemic mastocytosis is diagnosed when the major diagnostic criterion plus one minor criterion or at least three minor criteria are fulfilled. Systemic mastocytosis was confirmed in 57 patients (97%) by the diagnosis of compact mast cell infiltrates plus at least one minor diagnostic criterion (n=42, 71%) or at least three minor diagnostic criteria (n=15, 25%). In two patients, only two minor diagnostic criteria were detectable, insufficient for the diagnosis of systemic mastocytosis. By the use of highly sensitive molecular methods, including the analysis of microdissected mast cells, KIT D816V was found in all 58 bone marrow biopsies investigated for it but only in 74% (20/27) of the skin biopsies. It is important to state that even in cases with insufficient diagnostic criteria for systemic mastocytosis, KIT D816V-positive mast cells were detected in the bone marrow. This study demonstrates, for the first time, that almost all patients with adult-onset mastocytosis in the skin, in fact, have systemic mastocytosis with cutaneous involvement.
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87
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Johnson RC, George TI. The Differential Diagnosis of Eosinophilia in Neoplastic Hematopathology. Surg Pathol Clin 2013; 6:767-794. [PMID: 26839197 DOI: 10.1016/j.path.2013.08.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Eosinophilia in the peripheral blood is classified as primary (clonal) hematologic neoplasms or secondary (nonclonal) disorders, associated with hematologic or nonhematologic disorders. This review focuses on the categories of hematolymphoid neoplasms recognized by the 2008 World Health Organization Classification of Tumours and Haematopoietic and Lymphoid Tissues that are characteristically associated with eosinophilia. We provide a systematic approach to the diagnosis of these neoplastic proliferations via morphologic, immunophenotypic, and molecular-based methodologies, and provide the clinical settings in which these hematolymphoid neoplasms occur. We discuss recommendations that eosinophilia working groups have published addressing some of the limitations of the current classification scheme.
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Affiliation(s)
- Ryan C Johnson
- Department of Pathology, Stanford University School of Medicine, 300 Pasteur Drive, L235 MC 5324, Stanford, CA 94305, USA.
| | - Tracy I George
- Department of Pathology, University of New Mexico School of Medicine, 1 University of New Mexico, MSC08 4640, Albuquerque, NM 87131-0001, USA
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Erben P, Schwaab J, Metzgeroth G, Horny HP, Jawhar M, Sotlar K, Fabarius A, Teichmann M, Schneider S, Ernst T, Müller MC, Giehl M, Marx A, Hartmann K, Hochhaus A, Hofmann WK, Cross NCP, Reiter A. The KIT D816V expressed allele burden for diagnosis and disease monitoring of systemic mastocytosis. Ann Hematol 2013; 93:81-8. [PMID: 24281161 DOI: 10.1007/s00277-013-1964-1] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 11/11/2013] [Indexed: 11/29/2022]
Abstract
The activating KIT D816V mutation plays a central role in the pathogenesis, diagnosis, and targeted treatment of systemic mastocytosis (SM). For improved and reliable identification of KIT D816V, we have developed an allele-specific quantitative real-time PCR (RQ-PCR) with an enhanced sensitivity of 0.01-0.1 %, which was superior to denaturing high-performance liquid chromatography (0.5-1 %) or conventional sequencing (10-20 %). Overall, KIT D816 mutations were identified in 146/147 (99 %) of patients (D816V, n = 142; D816H, n = 2; D816Y, n = 2) with SM, including indolent SM (ISM, n = 63, 43 %), smoldering SM (n = 8, 5 %), SM with associated hematological non-mast cell lineage disease (SM-AHNMD, n = 16, 11 %), and aggressive SM/mast cell leukemia ± AHNMD (ASM/MCL, n = 60, 41 %). If positive in BM, the KIT D816V mutation was found in PB of all patients with advanced SM (SM-AHNMD, ASM, and MCL) and in 46 % (23/50) of patients with ISM. There was a strong correlation between the KIT D816V expressed allele burden (KIT D816V EAB) with results obtained from DNA by genomic allele-specific PCR and also with disease activity (e.g., serum tryptase level), disease subtype (e.g., indolent vs. advanced SM) and survival. In terms of monitoring of residual disease, qualitative and quantitative assessment of KIT D816V and KIT D816V EAB was successfully used for sequential analysis after chemotherapy or allogeneic stem cell transplantation. We therefore conclude that RQ-PCR assays for KIT D816V are useful complimentary tools for diagnosis, disease monitoring, and evaluation of prognosis in patients with SM.
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Affiliation(s)
- Philipp Erben
- III. Medizinische Klinik, Universitätsmedizin Mannheim, Theodor-Kutzer-Ufer 1-3, 68167, Mannheim, Germany
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Abstract
To explore mechanisms contributing to the clinical heterogeneity of systemic mastocytosis (SM) and to suboptimal responses to diverse therapies, we analyzed 39 KIT D816V mutated patients with indolent SM (n = 10), smoldering SM (n = 2), SM with associated clonal hematologic nonmast cell lineage disorder (SM-AHNMD, n = 5), and aggressive SM (n = 15) or mast cell leukemia (n = 7) with (n = 18) or without (n = 4) AHNMD for additional molecular aberrations. We applied next-generation sequencing to investigate ASXL1, CBL, IDH1/2, JAK2, KRAS, MLL-PTD, NPM1, NRAS, TP53, SRSF2, SF3B1, SETBP1, U2AF1 at mutational hotspot regions, and analyzed complete coding regions of EZH2, ETV6, RUNX1, and TET2. We identified additional molecular aberrations in 24/27 (89%) patients with advanced SM (SM-AHNMD, 5/5; aggressive SM/mast cell leukemia, 19/22) whereas only 3/12 (25%) indolent SM/smoldering SM patients carried one additional mutation each (U2AF1, SETBP1, CBL) (P < .001). Most frequently affected genes were TET2, SRSF2, ASXL1, CBL, and RUNX1. In advanced SM, 21/27 patients (78%) carried ≥3 mutations, and 11/27 patients (41%) exhibited ≥5 mutations. Overall survival was significantly shorter in patients with additional aberrations as compared to those with KIT D816V only (P = .019). We conclude that biology and prognosis in SM are related to the pattern of mutated genes that are acquired during disease evolution.
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Vannorsdall E, Collins J, Chen Q, Sarai G, Baer M. Symptomatic response to imatinib mesylate in cutaneous mastocytosis associated with chronic myelomonocytic leukemia. Curr Oncol 2013; 20:e349-53. [PMID: 23904774 PMCID: PMC3728064 DOI: 10.3747/co.20.1301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Mastocytosis is an uncommon disorder defined by increased and abnormal mast cells in one or more tissues. Cutaneous mastocytosis (cm) is limited to the skin, with varying degrees of rash, pruritus, and disfigurement. Systemic mastocytosis (sm) typically involves the bone marrow, sometimes in association with other bone marrow disorders, including chronic myelomonocytic leukemia (cmml). Mastocytosis has been associated with somatic mutations in the gene encoding the tyrosine kinase Kit, leading to identification of Kit as a therapeutic target. The Kit inhibitor imatinib mesylate is approved for aggressive sm. We present an unusual patient with disabling pruritus from telangiectasia macularis eruptiva perstans, a subtype of cm, and cmml, but with no evidence of systemic mast cell disease. She was treated with imatinib and experienced marked improvement in her pruritus. Concomitant cm and cmml have not previously been reported, and the present report is the first of successful imatinib therapy in an adult patient with cm.
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Affiliation(s)
- E.J. Vannorsdall
- Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD, U.S.A
| | - J.A. Collins
- Department of Pathology, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD, U.S.A
| | - Q.C. Chen
- Department of Pathology, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD, U.S.A
| | - G. Sarai
- Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD, U.S.A
| | - M.R. Baer
- Department of Medicine, University of Maryland School of Medicine and University of Maryland Greenebaum Cancer Center, Baltimore, MD, U.S.A
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91
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The prognostic impact of c-KIT mutation in systemic mastocytosis associated with acute myeloid leukaemia patients. Leuk Res 2013; 37:883-8. [DOI: 10.1016/j.leukres.2013.04.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Revised: 03/20/2013] [Accepted: 04/21/2013] [Indexed: 11/21/2022]
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92
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Pardanani A. Systemic mastocytosis in adults: 2013 update on diagnosis, risk stratification, and management. Am J Hematol 2013; 88:612-24. [PMID: 23720340 DOI: 10.1002/ajh.23459] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 04/04/2013] [Indexed: 12/20/2022]
Abstract
DISEASE OVERVIEW Systemic mastocytosis (SM) results from a clonal proliferation of abnormal mast cells (MC) in one or more extracutaneous organs. DIAGNOSIS The major criterion is presence of multifocal clusters of morphologically abnormal MC in the bone marrow. Minor diagnostic criteria include elevated serum tryptase level, abnormal MC expression of CD25 and/or CD2, and presence of KITD816V. RISK STRATIFICATION The 2008 World Health Organization (WHO) classification of SM has been shown to be prognostically relevant. Classification of SM patients into indolent (SM), aggressive SM (ASM), SM associated with a clonal non-MC lineage disease (SM-AHNMD) and mast cell leukemia (MCL) subgroups is a useful first step in establishing prognosis. MANAGEMENT SM treatment is generally palliative. ISM patients have a normal life expectancy and receive symptom-directed therapy; infrequently, cytoreductive therapy may be indicated for refractory symptoms. ASM patients have disease-related organ dysfunction; interferon-α (±corticosteroids) can control dermatological, hematological, gastrointestinal, skeletal, and mediator-release symptoms, but is hampered by poor tolerability. Similarly, cladribine has broad therapeutic activity, with particular utility when rapid MC debulking is indicated; the main toxicity is myelosuppression. Imatinib has a therapeutic role in the presence of an imatinib-sensitive KIT mutation or in KITD816-unmutated patients. Treatment of SM-AHNMD is governed primarily by the non-MC neoplasm; hydroxyurea has modest utility in this setting. INVESTIGATIONAL DRUGS Dasatinib's in vitro anti- KITD816V activity has not translated into significant therapeutic activity in most SM patients. In contrast, recently updated data confirms Midostaurin's significant anti-MC activity in patients with advanced SM.
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Affiliation(s)
- Animesh Pardanani
- Division of Hematology, Department of Medicine; Mayo Clinic; Rochester Minnesota
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93
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Wang SA, Hutchinson L, Tang G, Chen SS, Miron PM, Huh YO, Jones DM, Bueso-Ramos C, Verstovsek S, Medeiros LJ, Miranda RN. Systemic mastocytosis with associated clonal hematological non-mast cell lineage disease: clinical significance and comparison of chomosomal abnormalities in SM and AHNMD components. Am J Hematol 2013; 88:219-24. [PMID: 23440662 DOI: 10.1002/ajh.23380] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 12/01/2012] [Accepted: 12/06/2012] [Indexed: 11/11/2022]
Abstract
Some patients with systemic mastocytosis have concurrent hematological neoplasms, designated in the World Health Organization (WHO) classification as systemic mastocytosis with associated clonal hematological non-mast cell lineage disease (SM-AHNMD). In this study, we analyzed 29 patients with SM-AHNMD and compared them to 40 patients with pure SM. The AHNMDs were classified as chronic myelomonocytic leukemia (CMML) (n = 10), myelodysplastic syndrome (MDS) (n = 7), myeloproliferative neoplasms (n = 4), B-cell lymphoma/leukemia/plasma cell neoplasms (n = 7), and acute myeloid leukemia (n = 1). Patients with SM-AHNMD were older, more frequently had constitutional symptoms and hematological abnormalities, less often had skin lesions, and had an inferior overall survival compared with pure SM patients (48 months vs. not-reached, P < 0.001). Karyotypic abnormalities were detected in 9/28 (32%) patients with SM-AHNMD but not in pure SM patients (P < 0.001). Combined imaging/ fluorescence-in-situ hybridization performed in four SM-AHNMD cases revealed shared abnormal signals in mast cells and myeloid cells in two patients with SM-CMML and one patient with SM-MDS, but not in the mast cells of a case SM-associated with chronic lymphocytic leukemia with ATM-deletion. Quantitative mutation analysis showed higher levels of mutant KIT D816V in SM-CMML and SM-MDS than in pure SM (P < 0.001). Our data indicate that the SM-AHNMD category in the WHO classification is heterogeneous, including clonally related and unrelated forms of AHNMD. The presentation, treatment, and outcome of patients with SM-AHNMD is often dictated by the type of AHNMD.
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Affiliation(s)
- Sa A. Wang
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Lloyd Hutchinson
- Department of Pathology; University of Massachusetts Medical Center; Worcester; Massachusetts
| | - Guilin Tang
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Su S. Chen
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Patricia M. Miron
- Department of Pathology; University of Massachusetts Medical Center; Worcester; Massachusetts
| | - Yang O. Huh
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | | | - Carlos Bueso-Ramos
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Srdan Verstovsek
- Department of Leukemia; University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - L. Jeffrey Medeiros
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Roberto N. Miranda
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
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94
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Wang SA, Hutchinson L, Tang G, Chen SS, Miron PP, Huh YO, Jones DM, Bueso-Ramos C, Verstovsek S, Medeiros LJ, Miranda RN. Systemic mastocytosis with associated clonal hematological non-mast cell lineage disease: Clinical significance and comparison of chomosomal abnormalities in SM and AHNMD components. Am J Hematol 2013. [DOI: 10.1002/joh.23380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sa A. Wang
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Lloyd Hutchinson
- Department of Pathology; University of Massachusetts Medical Center; Worcester; Massachusetts
| | - Guilin Tang
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Su S. Chen
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Patricia P. Miron
- Department of Pathology; University of Massachusetts Medical Center; Worcester; Massachusetts
| | - Yang O. Huh
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | | | - Carlos Bueso-Ramos
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Srdan Verstovsek
- Department of Leukemia; University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - L. Jeffrey Medeiros
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
| | - Roberto N. Miranda
- Department of Hematopathology; The University of Texas M.D. Anderson Cancer Center; Houston; Texas
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95
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Abstract
The current WHO classification of mastocytosis defines one major and four minor diagnostic criteria for systemic mastocytosis (SM). One of the minor criteria is the detection of the "gain-of-function" mutation D816V of the c-kit proto-oncogene in extracutaneous organs. The receptor molecule KIT is a potential therapeutic target for tyrosine kinase inhibitors. KIT mutations have been described in more than 80% of SM, but only in the minority of cutaneous mastocytoses (CM). Usually exon 17 amplicons generated by polymerase chain reaction are analyzed for the detection of c-kit mutations. Most frequently the method of restriction fragment length polymorphism (RFLP) analysis using the endonuclease Hinf I is used. Another well-established technique utilizes melting point analysis of amplification products with specific hybridization probes. Recently, also allele-specific PCR assays have been described. The technique used for the detection of c-kit mutations in mastocytosis is dependent on the kind of material to be analyzed and the laboratory equipment available. In this chapter the techniques of PNA-mediated PCR-clamping in combination with melting point analysis for the genotyping of amplification products are described for mutational analysis in total DNA and microdissected cells from formalin-fixed paraffin-embedded bone marrow trephine biopsies.
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96
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Hauck G, Jonigk D, Kreipe H, Hussein K. Simultaneous and sequential concurrent myeloproliferative and lymphoproliferative neoplasms. Acta Haematol 2012; 129:187-96. [PMID: 23257916 DOI: 10.1159/000342484] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Accepted: 08/08/2012] [Indexed: 11/19/2022]
Abstract
Concurrent manifestation of two chronic-stage myeloid and lymphoid/plasmacytoid neoplasms in one patient is rare and occurs in ≤1% of patients. There has been no systematic analysis of which combinations are frequent/infrequent and whether two concurrent diseases in one patient are clonally related or represent independent diseases. We therefore characterised a series of cases from our own archive (n = 65) and collected a large number of previously reported cases of patients in whom myeloid and lymphoid/plasmacytoid neoplasms co-occurred (n = 185). The most frequent combination was Philadelphia chromosome-negative myeloproliferative neoplasm with concurrent B cell chronic lymphocytic leukaemia, accounting for approximately 50% of double-disease patients. We compared the quantity of unsorted bone marrow cell-derived JAK2(V617F) and KIT(D816V) alleles with the quantity of the lymphoid/plasmacytoid compartment and analysed a subfraction of cases with fluorescence in situ hybridisation. Although a common aberrant progenitor has been reported in some cases in the literature, we found evidence of two independent chronic-stage myeloid and lymphoid/plasmacytoid neoplasms.
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MESH Headings
- Amino Acid Substitution
- Female
- Humans
- Janus Kinase 2/genetics
- Janus Kinase 2/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/metabolism
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/pathology
- Male
- Mutation, Missense
- Neoplasms, Second Primary/genetics
- Neoplasms, Second Primary/metabolism
- Neoplasms, Second Primary/pathology
- Proto-Oncogene Proteins c-kit
- Retrospective Studies
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Affiliation(s)
- Gesa Hauck
- Institute of Pathology, Hannover Medical School, Hannover, Germany
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97
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Haenisch B, Nöthen MM, Molderings GJ. Systemic mast cell activation disease: the role of molecular genetic alterations in pathogenesis, heritability and diagnostics. Immunology 2012; 137:197-205. [PMID: 22957768 DOI: 10.1111/j.1365-2567.2012.03627.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Despite increasing understanding of its pathophysiology, the aetiology of systemic mast cell activation disease (MCAD) remains largely unknown. Research has shown that somatic mutations in kinases are necessary for the establishment of a clonal mast cell population, in particular mutations in the tyrosine kinase Kit and in enzymes and receptors with crucial involvement in the regulation of mast cell activity. However, other, as yet undetermined, abnormalities are necessary for the manifestation of clinical disease. The present article reviews molecular genetic research into the identification of disease-associated genes and their mutational alterations. The authors also present novel data on familial systemic MCAD and review the associated literature. Finally, the importance of understanding the molecular basis of inherited mutations in terms of diagnostics and therapy is emphasized.
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Affiliation(s)
- Britta Haenisch
- Institute of Human Genetics, University Hospital of Bonn, Germany
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98
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Sotlar K, Valent P, Horny HP. [Mastocytosis and eosinophilic leukemia: diagnostics and classification]. DER PATHOLOGE 2012; 33:539-52. [PMID: 23085697 DOI: 10.1007/s00292-012-1654-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Mastocytosis and myeloid eosinophilic neoplasms are rare diseases of the bone marrow and are often a diagnostic challenge for hematopathologists. In mastocytosis, compact mast cell infiltrates represent the main diagnostic criterion and for myeloid eosinophilic neoplasms, eosinophilic granulocytes dominate the histological picture. Both disease groups include phenotypically and prognostically very different entities which are each defined by WHO criteria. For systemic mastocytosis (SM), a differentiation between indolent and aggressive or even leukemic forms is of prognostic importance. In indolent variants of SM, a local and/or systemic, usually reactive increase in eosinophilic granulocytes (SM-eo) is often observed. In contrast, an increase in neoplastic eosinophils is often observed in advanced SM, predominantly in diseases designated SM with associated non-mastocytic hematological neoplasms (SM-AHNMD), e.g. in SM with chronic eosinophilic leukemia (SM-CEL). Apart from mastocytoses, immunophenotypically aberrant tissue mast cells are only observed in certain rare forms of myeloid neoplasms with eosinophilia, in particular in myeloproliferative neoplasms (MPN-eo) with cytogenic anomalies in the platelet-derived growth factor receptor (PDGFR). The World Health Organization (WHO) classification of eosinophilic leukemias, however, fulfils the morphological and clinical requirements in a limited way only and needs an update.
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MESH Headings
- Biopsy, Needle
- Bone Marrow/pathology
- Choristoma/pathology
- Cytogenetic Analysis
- Diagnosis, Differential
- Eosinophils/pathology
- Hypereosinophilic Syndrome/classification
- Hypereosinophilic Syndrome/diagnosis
- Hypereosinophilic Syndrome/genetics
- Hypereosinophilic Syndrome/pathology
- Immunophenotyping
- Leukemia, Mast-Cell/classification
- Leukemia, Mast-Cell/diagnosis
- Leukemia, Mast-Cell/genetics
- Leukemia, Mast-Cell/pathology
- Mast Cells/pathology
- Mastocytosis/classification
- Mastocytosis/diagnosis
- Mastocytosis/genetics
- Mastocytosis/pathology
- Mastocytosis, Systemic/classification
- Mastocytosis, Systemic/diagnosis
- Mastocytosis, Systemic/genetics
- Mastocytosis, Systemic/pathology
- Myelodysplastic-Myeloproliferative Diseases/classification
- Myelodysplastic-Myeloproliferative Diseases/diagnosis
- Myelodysplastic-Myeloproliferative Diseases/genetics
- Myelodysplastic-Myeloproliferative Diseases/pathology
- Prognosis
- Receptors, Platelet-Derived Growth Factor/genetics
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Affiliation(s)
- K Sotlar
- Pathologisches Institut, Ludwig-Maximilians-Universität München, Thalkirchner Str 36, 80337 München, Deutschland
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99
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Sasaki K, Chang A, Najafian B. Indolent systemic mastocytosis associated with light chain deposition disease. Clin Kidney J 2012; 5:424-7. [PMID: 26019820 PMCID: PMC4432416 DOI: 10.1093/ckj/sfs104] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2012] [Accepted: 07/17/2012] [Indexed: 11/18/2022] Open
Abstract
Systemic mastocytosis (SM) is characterized by infiltration of neoplastic mast cells in one or more organ systems. SM in association with plasma cell dyscrasia is very rare. We report a first case of indolent SM (ISM) associated with light chain deposition disease (LCDD) in a kidney biopsy from a 59-year-old female presenting with skin rash, elevated serum creatinine, hematuria and mild proteinuria. Subsequent workup demonstrated IgG kappa monoclonal protein in serum and urine. A bone marrow biopsy revealed neoplastic mast cells involving bone marrow without evidence of clonal myeloid or lymphoid proliferation. Kidney biopsy demonstrated modest mesangial expansion detected by light microscopy and unequivocal evidence of monoclonal kappa light chain deposition within glomerular capillaries, tubular basement membranes and vascular walls detected by immunofluorescence and/or electron microscopy, along with equivocal evidence of light chain cast nephropathy. Despite treatment with bortezomib and dexamethasone, her renal function was progressively declined over the next 6 months. This case is a reminder that SM can coincide with LCDD, which requires clinical suspicion and multimodality workup on a kidney biopsy including immunofluorescence and electron microscopy to reach the correct diagnosis.
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Affiliation(s)
- Kotaro Sasaki
- Department of Pathology , University of Washington Medical Center , Seattle, WA 98195 , USA
| | - Alice Chang
- Nephrology , Group Health Cooperative , Seattle, WA 98112 , USA
| | - Behzad Najafian
- Department of Pathology , University of Washington Medical Center , Seattle, WA 98195 , USA
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100
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Lange M, Nedoszytko B, Górska A, Żawrocki A, Sobjanek M, Kozlowski D. Mastocytosis in children and adults: clinical disease heterogeneity. Arch Med Sci 2012; 8:533-41. [PMID: 22852012 PMCID: PMC3400919 DOI: 10.5114/aoms.2012.29409] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2010] [Revised: 03/14/2011] [Accepted: 04/10/2011] [Indexed: 11/23/2022] Open
Abstract
Mastocytosis is a clonal disease of the hematopoietic stem cell. The condition consists of a heterogeneous group of disorders characterized by a pathological accumulation of mast cells in tissues including the skin, bone marrow, liver, spleen and the lymph nodes. Mastocytosis is a rare disease which occurs both in children and adults. Childhood onset mastocytosis is usually cutaneous and transient while in adults the condition commonly progresses to a systemic form. The heterogeneity of clinical presentation of mastocytosis is typically related to the tissue mast cell burden, symptoms due to the release of mast cell mediators, the type of skin lesions, the patient's age at the onset and associated haematological disorders. Therefore, a multidisciplinary approach is recommended. The present article provides an overview of clinical symptoms, diagnostic criteria and treatment of mastocytosis to facilitate the diagnosis and management of mastocytosis patients in clinical practice.
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Affiliation(s)
- Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Poland
| | - Bogusław Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Poland
| | | | - Anton Żawrocki
- Department of Pathomorphology, Medical University of Gdansk, Poland
| | - Michał Sobjanek
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Poland
| | - Dariusz Kozlowski
- Department of Cardiology and Electrotherapy, Medical University of Gdansk, Poland
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