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Valent P, Hoermann G, Bonadonna P, Hartmann K, Sperr WR, Broesby-Olsen S, Brockow K, Niedoszytko M, Hermine O, Chantran Y, Butterfield JH, Greiner G, Carter MC, Sabato V, Radia DH, Siebenhaar F, Triggiani M, Gülen T, Alvarez-Twose I, Staudinger T, Traby L, Sotlar K, Reiter A, Horny HP, Orfao A, Galli SJ, Schwartz LB, Lyons JJ, Gotlib J, Metcalfe DD, Arock M, Akin C. The Normal Range of Baseline Tryptase Should Be 1 to 15 ng/mL and Covers Healthy Individuals With HαT. J Allergy Clin Immunol Pract 2023; 11:3010-3020. [PMID: 37572755 DOI: 10.1016/j.jaip.2023.08.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/27/2023] [Accepted: 08/01/2023] [Indexed: 08/14/2023]
Abstract
Physiological levels of basal serum tryptase vary among healthy individuals, depending on the numbers of mast cells, basal secretion rate, copy numbers of the TPSAB1 gene encoding alpha tryptase, and renal function. Recently, there has been a growing debate about the normal range of tryptase because individuals with the hereditary alpha tryptasemia (HαT) trait may or may not be symptomatic, and if symptomatic, uncertainty exists as to whether this trait directly causes clinical phenotypes or aggravates certain conditions. In fact, most HαT-positive cases are regarded as asymptomatic concerning mast cell activation. To address this point, experts of the European Competence Network on Mastocytosis (ECNM) and the American Initiative in Mast Cell Diseases met at the 2022 Annual ECNM meeting and discussed the physiological tryptase range. Based on this discussion, our faculty concluded that the normal serum tryptase range should be defined in asymptomatic controls, inclusive of individuals with HαT, and based on 2 SDs covering the 95% confidence interval. By applying this definition in a literature screen, the normal basal tryptase in asymptomatic controls (HαT-positive persons included) ranges between 1 and 15 ng/mL. This definition should avoid overinterpretation, unnecessary referrals, and unnecessary anxiety or anticipatory fear of illness in healthy individuals.
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Affiliation(s)
- Peter Valent
- Division of Haematology, Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria.
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; MLL Munich Leukemia Laboratory, Munich, Germany
| | | | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Wolfgang R Sperr
- Division of Haematology, Department of Internal Medicine I, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Olivier Hermine
- Service d'hématologie, Imagine Institute Université de Paris, Centre national de référence des mastocytoses, Hôpital Necker, Assistance publique hôpitaux de Paris, Paris, France
| | - Yannick Chantran
- Department of Biological Immunology, Saint-Antoine Hospital, Paris Sorbonne University, Paris, France
| | | | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Ihr Labor, Medical Diagnostic Laboratories, Vienna, Austria
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Md
| | - Vito Sabato
- Faculty of Medicine and Health Sciences, Department of Immunology-Allergology-Rheumatology, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium
| | - Deepti H Radia
- Guy's & St. Thomas' National Health Service (NHS) Foundation Trust, Guy's Hospital, London, UK
| | - Frank Siebenhaar
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology (ITMP), Immunology and Allergology (IA), Berlin, Germany
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Theo Gülen
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital Huddinge, Stockholm, Sweden; Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet, Stockholm, Sweden
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast) and CIBERONC, Hospital Virgen del Valle, Toledo, Spain
| | - Thomas Staudinger
- Department of Internal Medicine I, Intensive Care Unit, Medical University of Vienna, Vienna, Austria
| | - Ludwig Traby
- Department of Internal Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria
| | - Karl Sotlar
- Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC CSIC/USAL) Instituto Biosanitario de Salamanca (IBSAL), CIBERONC and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Stephen J Galli
- Department of Pathology, Department of Microbiology and Immunology, Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, Calif
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Jonathan J Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Md
| | - Jason Gotlib
- Stanford University School of Medicine/Stanford Cancer Institute, Stanford, Calif
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, Md
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Paris Sorbonne University, Paris, France
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
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Cao VT, Carter MC, Brenchley JM, Bolan H, Scott LM, Bai Y, Metcalfe DD, Komarow HD. sCD14 and Intestinal Fatty Acid Binding Protein Are Elevated in the Serum of Patients With Idiopathic Anaphylaxis. J Allergy Clin Immunol Pract 2023; 11:2080-2086.e5. [PMID: 36997122 PMCID: PMC10411508 DOI: 10.1016/j.jaip.2023.03.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 02/02/2023] [Accepted: 03/14/2023] [Indexed: 03/31/2023]
Abstract
BACKGROUND Intestinal epithelial integrity compromise has been identified in gastrointestinal (GI), atopic, and autoimmune diseases. OBJECTIVE Episodes of idiopathic anaphylaxis (IA) are often accompanied by GI manifestations. We, therefore, sought to determine whether surrogate markers of GI permeability were aberrant in this patient population. METHODS Serum concentrations of zonulin, intestinal fatty acid binding protein (I-FABP), and soluble CD14 (sCD14) measured in 54 patients with IA were compared with concentrations in healthy controls (HCs); and correlated with clinical and laboratory parameters. RESULTS The I-FABP was elevated in sera of patients with IA compared with HCs (median 1,378.0 pg/mL vs 479.0 pg/mL, respectively; P < .001). The sCD14 was also elevated compared with HCs (median 2,017.0 ng/mL and 1,189.0 ng/mL, respectively; P < .001), whereas zonulin was comparable between patients with IA and HCs (median 49.6 ng/mL vs 52.4 ng/mL, respectively; P = .40). The I-FABP was elevated in patients with IA who experienced vomiting and/or diarrhea compared with patients with IA who did not (P = .0091). CONCLUSIONS The I-FABP and sCD14 are elevated in the serum of patients with IA. Elevations in these biomarkers of IA provides evidence that increased GI permeability, as is observed in other allergic conditions such as food allergy, is a common finding in those with IA and offers possible insight into the pathogenesis of this disease.
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Affiliation(s)
- Vivian T Cao
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jason M Brenchley
- Barrier Immunity Section, Laboratory of Viral Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hyejeong Bolan
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Linda M Scott
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Yun Bai
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh D Komarow
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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Golden DBK, Carter MC. Anaphylaxis: Bench to Bedside. J Allergy Clin Immunol Pract 2023; 11:2049-2050. [PMID: 37244441 DOI: 10.1016/j.jaip.2023.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 05/21/2023] [Indexed: 05/29/2023]
Affiliation(s)
- David B K Golden
- Division of Allergy and Clinical Immunology, Johns Hopkins University School of Medicine, Baltimore, Md.
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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Carter MC, Park J, Vadas P, Worm M. Extrinsic and Intrinsic Modulators of Anaphylaxis. J Allergy Clin Immunol Pract 2023; 11:1998-2006. [PMID: 37230384 DOI: 10.1016/j.jaip.2023.05.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/09/2023] [Accepted: 05/10/2023] [Indexed: 05/27/2023]
Abstract
The severity of anaphylaxis is determined by many factors. The allergenic source as well as the age of the affected individual and the route of allergen exposure encompass the major contributors of the clinical outcome. Moreover, the severity can be modulated further by intrinsic and extrinsic factors. Among these, the genetic predisposition, certain comorbidities such as uncontrolled asthma, and hormonal fluctuations have been proposed as intrinsic and antihypertensive medications or physical activity as extrinsic factors. Recent advances have highlighted immunologic pathways that may exacerbate the response to allergens through receptors on mast cells, basophils, platelets, and other granulocytes. Atopy, platelet-activating factor acetylhydrolase deficiency, hereditary alpha tryptasemia, and clonal mast cell disorders are examples associated with genetic alterations that may predispose to severe anaphylaxis. Identifying risk factors that lower the threshold of reactivity or increase the severity of multisystem reactions is important in the management of this patient population.
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Affiliation(s)
- Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Jane Park
- Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Peter Vadas
- Division of Clinical Immunology and Allergy, Department of Medicine, St. Michael's Hospital, Toronto, Ontario, Canada
| | - Margitta Worm
- Division of Allergy and Immunology, Department of Dermatology, Venerology and Allergy, Charité Universitätsmedizin Berlin, Berlin, Germany
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5
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Makovoz A, Cousins KL, Dominguez Aldama LN, Bolan H, Metcalfe DD, Komarow HD, Carter MC. Assessment of low immunoglobulin levels and clinical manifestations in patients with mastocytosis. J Allergy Clin Immunol Glob 2023; 2:105-110. [PMID: 36873731 PMCID: PMC9980822 DOI: 10.1016/j.jacig.2022.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Background Patients with a low IgG level alone or with low IgA or IgM levels have been reported to be susceptible to respiratory tract infections and recurrent sinusitis. Patients diagnosed with CVID have a higher prevalence of autoimmune diseases and lymphoid malignancies. Mastocytosis is a myeloproliferative disease, not typically associated with autoimmune disease or frequent infections. Objective We sought to determine the distribution of immunoglobulins in children and adults with mastocytosis. Evaluate the impact of low immunoglobulins on the clinical management of patients with mastocytosis. Methods We performed a 10-year retrospective analysis on 320 adult and pediatric patients with mastocytosis for immunoglobulins using an electronic medical query. We identified 25 adults and 9 children with one or more low immunoglobulins. Patient records were examined for a history of infections and autoimmune disorders. Results Serum immunoglobulins in children and adults with mastocytosis fell within a normal range. Among patients with low IgG levels alone or with low IgM and /or IgA, 20% had a history of infections and 20% of adults had autoimmune disorders. The most common infection was recurrent otitis media (OM). Conclusion Patients with mastocytosis typically have normal immunoglobulins. With few exceptions, those with low immunoglobulins did not have frequent infections or autoimmune diseases. This data supports the conclusion that routine determination of immunoglobulins in patients with mastocytosis is not required and reserved for patients with clinical conditions, which might be related to an immunoglobulin deficiency.
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Affiliation(s)
- Ayelet Makovoz
- National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, Maryland
| | - Kimberley L Cousins
- Division of Allergy and Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | - Luisa N Dominguez Aldama
- National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, Maryland
| | - Hyejeong Bolan
- National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, Maryland
| | - Dean D Metcalfe
- National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, Maryland
| | - Hirsh D Komarow
- National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, Maryland
| | - Melody C Carter
- National Institute of Allergy and Infectious Diseases, National Institute of Health, Bethesda, Maryland
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6
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Komarow HD, Carter MC, Metcalfe DD, Ali H. Reply to "MRGPRX2: A novel biomarker in mastocytosis?". J Allergy Clin Immunol Pract 2023; 11:671. [PMID: 36759089 DOI: 10.1016/j.jaip.2022.10.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 02/10/2023]
Affiliation(s)
- Hirsh D Komarow
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hydar Ali
- Department of Basic and Translational Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, Pa.
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Copaescu AM, Carter MC. An atypical case of Hymenoptera venom anaphylaxis. J Allergy Clin Immunol Pract 2023; 11:1326-1328.e9. [PMID: 36693538 DOI: 10.1016/j.jaip.2023.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/22/2023]
Affiliation(s)
- Ana Maria Copaescu
- Department of Medicine, Division of Allergy and Clinical Immunology, McGill University Health Centre (MUHC), McGill University, Montreal, Quebec, Canada; The Research Institute of the McGill University Health Centre, McGill University, McGill University Health Centre (MUHC), Montreal, Quebec, Canada; Centre for Antibiotic Allergy and Research, Department of Infectious Diseases, Austin Health, Heidelberg, Victoria, Australia.
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, United States
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Jones BL, Carter MC, Davis CM, Wang J. Diversity, Equity, and Inclusion: A Decade of Progress? J Allergy Clin Immunol Pract 2023; 11:116-125. [PMID: 36272720 DOI: 10.1016/j.jaip.2022.10.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 10/05/2022] [Accepted: 10/13/2022] [Indexed: 11/06/2022]
Abstract
The concepts of diversity, equity, and inclusion are fundamental and more recently heavily discussed within medicine, research, and the larger society. There is increasing awareness that diversity of thoughts, perspectives, and backgrounds yields stronger teams and more effective results. There is also increasing awareness that stark inequities from systemic, institutional, and individual levels exist that limit the baseline opportunities for many populations. To close disparity gaps, broad aspects of diversity and promoting equity are required and efforts must be inclusive of those most marginalized. In this Clinical Commentary, we discuss, "How and If progress has been made in Diversity, Equity, Inclusion within the field of Allergy/Asthma/Immunology in the past decade?" We discuss the current state of clinical practice and what has been revealed over the past 10 years; describe our current workforce and what progress has or has not occurred there; and finally, review the state of scientific and medical research.
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Affiliation(s)
- Bridgette L Jones
- Department of Pediatrics, Section of Allergy, Asthma, Immunology and Division of Pediatric Clinical Pharmacology and Therapeutic Innovation, University of Missouri Kansas City School of Medicine, Children's Mercy Hospital Kansas City, Kansas City, Mo.
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Carla M Davis
- Division of Immunology, Allergy and Retrovirology, Baylor College of Medicine, Texas Children's Hospital, Houston, Texas
| | - Julie Wang
- Jaffe Food Allergy Institute, Department of Pediatrics, Division of Allergy & Immunology, Icahn School of Medicine at Mount Sinai, New York, NY
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Voelker D, Bednarski JJ, Nieman E, Carter MC, Polk B. Hematopoietic KIT D816Y mutation presenting as in utero aggressive systemic mastocytosis with response to midostaurin. J Allergy Clin Immunol Pract 2022; 11:1323-1325.e1. [PMID: 36581075 DOI: 10.1016/j.jaip.2022.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 11/23/2022] [Accepted: 12/05/2022] [Indexed: 12/28/2022]
Affiliation(s)
- Dayne Voelker
- Department of Medicine, Division of Allergy and Immunology, Washington University School of Medicine, St Louis, Mo
| | - Jeffrey J Bednarski
- Department of Pediatrics, Division of Hematology-Oncology, Washington University School of Medicine, St Louis, Mo
| | - Elizabeth Nieman
- Departments of Medicine and Pediatrics, Division of Dermatology, School of Medicine, Washington University School of Medicine, St Louis, Mo
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Brooke Polk
- Department of Pediatrics, Division of Pediatric Allergy and Pulmonary Medicine, Washington University, St Louis, Mo.
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Valent P, Hartmann K, Bonadonna P, Gülen T, Brockow K, Alvarez-Twose I, Hermine O, Niedoszytko M, Carter MC, Hoermann G, Butterfield JH, Lyons JJ, Sperr WR, Greiner G, Sotlar K, Kluin-Nelemans HC, Schwaab J, Lange M, George TI, Siebenhaar F, Broesby-Olsen S, Jawhar M, Nedoszytko B, Castells M, Orfao A, Gotlib J, Reiter A, Horny HP, Triggiani M, Arock M, Metcalfe DD, Akin C. Global Classification of Mast Cell Activation Disorders: An ICD-10-CM-Adjusted Proposal of the ECNM-AIM Consortium. J Allergy Clin Immunol Pract 2022; 10:1941-1950. [PMID: 35623575 DOI: 10.1016/j.jaip.2022.05.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/04/2022] [Accepted: 05/11/2022] [Indexed: 12/18/2022]
Abstract
Mast cell activation (MCA) is common and occurs in a number of pathologic conditions, including IgE-dependent and independent allergic reactions, atopic disorders, autoimmune processes, and mastocytosis. In a subset of patients, no underlying disease and no known trigger of MCA are found. When the symptoms are severe, systemic, and recurrent, and accompanied by a diagnostic increase in the serum tryptase level or other mast cell mediators, an MCA syndrome (MCAS) may be diagnosed. In these patients, the symptoms typically respond to drugs suppressing MCA, mediator production in mast cells, or mediator effects. In each case, diagnostic consensus criteria must be fulfilled to diagnose MCAS. In other patients, MCA may be local, less severe, or less acute, or may be suspected but not confirmed, so that the diagnostic criteria of MCAS are not fulfilled. In these patients, it may be difficult to prove MCA, for example, by measuring multiple mast cell mediators or basophil activation, the latter as a surrogate of IgE-dependent hypersensitivity. However, validated diagnostic criteria for implicating suspected MCA behind such conditions are lacking, even if some of these conditions have recently been assigned to an International Classification of Diseases-10-Clinical Modification code (ICD-10-CM). In this article, we discuss diagnostic features and criteria and propose a ICD-10-CM-adjusted classification for disorders associated with MCA, herein referred to as MCA disorders (MCADs), with special emphasis on the delineation between confirmed MCAS, MCAD not fulfilling MCAS criteria, and suspected MCAD that is not present. In addition, we discuss the discrimination between overt MCAD and predisposing conditions, such as atopic states, mastocytosis, and hereditary alpha tryptasemia.
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Affiliation(s)
- Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria.
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland
| | | | - Theo Gülen
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital Huddinge, Stockholm, Sweden; Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet, Stockholm, Sweden
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast) and CIBERONC, Hospital Virgen del Valle, Toledo, Spain
| | - Olivier Hermine
- Service d'hématologie, Imagine Institute Université de Paris, Sorbonne, INSERM U1163, Centre national de référence des mastocytoses, Hôpital Necker, Assistance publiquehôpitaux de Paris, Paris, France
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; MLL Munich Leukemia Laboratory, Munich, Germany
| | | | - Jonathan J Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Laboratory Medicine, Medical University of Vienna, and Ihr Labor, Vienna, Austria
| | - Karl Sotlar
- Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Hanneke C Kluin-Nelemans
- Department of Haematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Tracy I George
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Frank Siebenhaar
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt - Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Boguslaw Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland; Invicta Fertility and Reproductive Center, Molecular Laboratory, Sopot, Poland
| | - Mariana Castells
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC; CSIC/USAL), Instituto Biosanitario de Salamanca (IBSAL), CIBERONC and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Jason Gotlib
- Stanford Cancer Institute/Stanford University School of Medicine, Stanford, Calif
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University (UPMC), 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, Md
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
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11
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Gotlib J, Schwaab J, Shomali W, George TI, Radia DH, Castells M, Carter MC, Hartmann K, Álvarez-Twose I, Brockow K, Bonadonna P, Hermine O, Niedoszytko M, Hoermann G, Sperr WR, Elberink HO, Siebenhaar F, Butterfield JH, Ustun C, Zanotti R, Triggiani M, Schwartz LB, Lyons JJ, Orfao A, Sotlar K, Horny HP, Arock M, Metcalfe DD, Akin C, Lübke J, Valent P, Reiter A. Proposed European Competence Network on Mastocytosis-American Initiative in Mast Cell Diseases (ECNM-AIM) Response Criteria in Advanced Systemic Mastocytosis. J Allergy Clin Immunol Pract 2022; 10:2025-2038.e1. [PMID: 35724948 DOI: 10.1016/j.jaip.2022.05.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 12/18/2022]
Abstract
Advanced systemic mastocytosis (AdvSM) is characterized by the presence of KIT D816V and other somatic mutations (eg, in SRSF2, ASXL1, and RUNX1) in 95% and 60% to 70% of patients, respectively. The biological and clinical consequences of AdvSM include multilineage involvement (eg, associated hematologic neoplasm) in 60% to 80% of patients, variable infiltration and damage (C-findings) of predominantly bone marrow and visceral organs through affected mast cell (MC) and non-MC lineages, and elevated levels of serum tryptase. Recently, the treatment landscape has substantially changed with the introduction of the multikinase/KIT inhibitor midostaurin and the selective KIT D816V inhibitor avapritinib. In this review, we discuss the evolution of AdvSM response criteria that have been developed to better capture clinical benefit (eg, improved responses and progression-free and overall survival). We propose refined response criteria from European Competence Network on Mastocytosis and American Initiative in Mast Cell Diseases investigators that use a tiered approach to segregate the effects of histopathologic (eg, bone marrow MC burden, tryptase), molecular (eg, KIT D816V variant allele frequency), clinical (eg, C-findings), and symptom response on long-term outcomes. These response criteria require evaluation in future prospective clinical trials of selective KIT inhibitors and other novel agents.
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Affiliation(s)
- Jason Gotlib
- Stanford Cancer Institute/Stanford University School of Medicine, Stanford, Calif.
| | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - William Shomali
- Stanford Cancer Institute/Stanford University School of Medicine, Stanford, Calif
| | - Tracy I George
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Deepti H Radia
- Department of Clinical Haematology, Guys and St Thomas' NHS Hospitals, London, United Kingdom
| | - Mariana Castells
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel and University of Basel, Switzerland
| | - Ivan Álvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha and Centro de Investigación Biomédica en Red de Oncología (CIBERONC), Hospital Virgen del Valle, Toledo, Spain
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | | | - Olivier Hermine
- Imagine Institute Université de Paris, Sorbonne, INSERM U1163, Centre National de Référence des Mastocytoses, Hôpital Necker, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Gregor Hoermann
- MLL Munich Leukemia Laboratory, Munich, Germany; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Wolfgang R Sperr
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Hanneke Oude Elberink
- Department of Allergology, University Medical Center Groningen and GRIAC Research Institute, University of Groningen, Groningen, The Netherlands
| | - Frank Siebenhaar
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Department of Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | | | - Celalettin Ustun
- Department of Medicine, Division of Hematology, Oncology, and Cell Therapy, Coleman Foundation Blood and Marrow Transplant Center at Rush University Medical Center, Chicago, Ill
| | - Roberta Zanotti
- Section of Hematology, Multidisciplinary Outpatients Clinics for Mastocytosis, Department of Medicine, University Hospital of Verona, Verona, Italy
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Jonathan J Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Alberto Orfao
- Servicio Central de Citometria (NUCLEUS), Instituto de Biología Molecular y Celular del Cáncer (IBMCC) Instituto Biosanitario de Salamanca, CIBERONC and Department of Medicine, University of Salamanca, Salamanca, Spain; Utah
| | - Karl Sotlar
- Institute of Pathology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University, 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, Md
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
| | - Johannes Lübke
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Peter Valent
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Heidelberg University, Mannheim, Germany
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12
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Pyatilova P, Akin C, Alvarez-Twose I, Arock M, Bonadonna P, Brockow K, Butterfield JH, Broesby-Olsen S, Carter MC, Castells M, George TI, Gotlib J, Greiner G, Gülen T, Hartmann K, Hermine O, Horny HP, Jawhar M, Lange M, Lyons JJ, Maurer M, Metcalfe DD, Nedoszytko B, Niedoszytko M, Orfao A, Reiter A, Schwaab J, Sotlar K, Sperr WR, Triggiani M, Valent P, Siebenhaar F. Refined Treatment Response Criteria for Indolent Systemic Mastocytosis Proposed by the ECNM-AIM Consortium. J Allergy Clin Immunol Pract 2022; 10:2015-2024. [PMID: 35724950 DOI: 10.1016/j.jaip.2022.05.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 05/12/2022] [Accepted: 05/15/2022] [Indexed: 01/08/2023]
Abstract
Indolent systemic mastocytosis (ISM) has a favorable prognosis and normal life expectancy. However, many patients suffer from mast cell (MC) mediator-related symptoms, which significantly affect quality of life (QoL). Cutaneous, gastrointestinal, and neurological complaints, musculoskeletal pain, and the presence of skin lesions, anaphylaxis, and osteoporosis are the main symptoms and signs in ISM and must be assessed in all patients before and during treatment. Validated mastocytosis-specific patient-reported outcome measures (PROMs) should be used for this purpose. Serum tryptase and KIT D816V allele burden are recommended as secondary outcome parameters, noting that they do not reflect the severity of signs, symptoms, and related QoL impairment, but indirectly express MC burden. Changes from baseline of 90%, 60%, and 30% indicate complete response >90%, major response 60% to 90%, partial response 30% to 60%, and no response <30% to treatment. To conclude, we recommend the use of PROMs as primary outcome parameters to define treatment response in patients with ISM in clinical trials and in everyday clinical practice.
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Affiliation(s)
- Polina Pyatilova
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
| | - Iván Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast) and CIBERONC, Hospital Virgen del Valle, Toledo, Spain
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Paris Sorbonne University, Paris, France
| | | | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany
| | | | - Sigurd Broesby-Olsen
- Mastocytosis Centre, Odense University Hospital, Odense, Denmark; Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Md
| | - Mariana Castells
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Tracy I George
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Jason Gotlib
- Stanford University School of Medicine/Stanford Cancer Institute, Stanford, Calif
| | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria; Ihr Labor, Medical Diagnostic Laboratories, Vienna, Austria
| | - Theo Gülen
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital Huddinge, Stockholm, Sweden; Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Olivier Hermine
- Imagine Institute Université de Paris, Sorbonne, INSERM U1163, Centre national de référence des mastocytoses, Hôpital Necker, Assistance publique hôpitaux de Paris, Paris, France
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig Maximilians University, Munich, Germany
| | - Mohamed Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Jonathan J Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Md
| | - Marcus Maurer
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Md
| | - Boguslaw Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland; Invicta Fertility and Reproductive Centre, Molecular Laboratory, Gdansk, Poland
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdańsk, Gdansk, Poland
| | - Alberto Orfao
- Servicio General de Citometria, Centro de Investigacion del Cancer (IBMCC CSIC/USAL) Instituto Biosanitario de Salamanca (IBSAL), CIBERONC and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Andreas Reiter
- Institute of Pathology, Ludwig Maximilians University, Munich, Germany
| | - Juliana Schwaab
- Institute of Pathology, Ludwig Maximilians University, Munich, Germany
| | - Karl Sotlar
- Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University, Salzburg, Austria
| | - Wolfgang R Sperr
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Peter Valent
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Frank Siebenhaar
- Institute of Allergology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Allergology and Immunology, Berlin, Germany.
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13
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Awan SF, Schwartz LB, Maric I, Metcalfe DD, Carter MC. Acute increases in total serum tryptase unassociated with hemodynamic instability in diffuse cutaneous mastocytosis. Ann Allergy Asthma Immunol 2022; 129:249-252. [PMID: 35568301 DOI: 10.1016/j.anai.2022.04.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/13/2022] [Accepted: 04/27/2022] [Indexed: 11/19/2022]
Affiliation(s)
- Seemal F Awan
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland.
| | - Larry B Schwartz
- Division of Rheumatology, Allergy and Immunology, Department of Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Irina Maric
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Maryland
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
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14
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Valent P, Hartmann K, Schwaab J, Alvarez-Twose I, Brockow K, Bonadonna P, Hermine O, Niedoszytko M, Carter MC, Hoermann G, Sperr WR, Butterfield JH, Ustun C, Zanotti R, Radia DH, Castells M, Triggiani M, Schwartz LB, Orfao A, George TI, Sotlar K, Gotlib J, Reiter A, Horny HP, Arock M, Akin C, Metcalfe DD. Personalized Management Strategies in Mast Cell Disorders: ECNM-AIM User's Guide for Daily Clinical Practice. J Allergy Clin Immunol Pract 2022; 10:1999-2012.e6. [PMID: 35342031 DOI: 10.1016/j.jaip.2022.03.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 12/18/2022]
Abstract
Mastocytosis is a myeloid neoplasm defined by expansion and focal accumulation of clonal mast cells (MCs) in one or more organs. The disease exhibits a complex pathology and may be complicated by MC activation, bone abnormalities, neurological problems, gastrointestinal symptoms, and/or hematologic progression. The World Health Organization divides mastocytosis into cutaneous forms, systemic mastocytosis (SM) and MC sarcoma. In most patients with SM, somatic mutations in KIT are detected. Patients with indolent SM have a normal to near-normal life expectancy, whereas patients with advanced SM, including aggressive SM and MC leukemia, have a poor prognosis. In those with advanced SM, multiple somatic mutations and an associated hematologic neoplasm may be detected. Mediator-related symptoms can occur in any type of mastocytosis. Symptoms may be mild, severe, or even life-threatening. In patients with severe acute symptoms, an MC activation syndrome may be diagnosed. In these patients, relevant comorbidities include IgE-dependent and IgE-independent allergies. Management of patients with SM is an emerging challenge in daily practice and requires in-depth knowledge and a multidisciplinary and personalized approach with selection of appropriate procedures and interventions. In this article, we review the current knowledge on SM and MC activation syndrome, with emphasis on multidisciplinary aspects in diagnosis and patient-specific management. In addition, we provide a user's guide for application of markers, algorithms, prognostic scores, and treatments for use in daily practice.
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Affiliation(s)
- Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria.
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel, Basel, Switzerland; University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel, Basel, Switzerland
| | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Toledo, Spain; CIBERONC, Hospital Virgen del Valle, Toledo, Spain
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
| | | | - Olivier Hermine
- Imagine Institute Université de Paris, Sorbonne, INSERM U1163, Centre national de référence des mastocytoses, Hôpital Necker, Assistance publique hôpitaux de Paris, Paris, France
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; MLL Munich Leukemia Laboratory, Munich, Germany
| | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | | | - Celalettin Ustun
- Department of Medicine, Division of Hematology, Oncology and Cell Therapy, The Coleman Foundation Blood and Marrow Transplant Center at Rush University Medical Center, Chicago, Ill
| | - Roberta Zanotti
- Section of Hematology, Multidisciplinary Outpatients Clinics for Mastocytosis, Department of Medicine, University Hospital of Verona, Verona, Italy
| | - Deepti H Radia
- Department of Clinical Haematology, Guys and St Thomas' NHS Hospitals, London, United Kingdom
| | - Mariana Castells
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy & Immunology, Virginia Commonwealth University (VCU), Richmond, Va
| | - Alberto Orfao
- Servicio Central de Citometria (NUCLEUS), Centro de Investigacion del Cancer (IBMCC; CSIC/USAL), Instituto Biosanitario de Salamanca (IBSAL), Salamanca, Spain; Department of Medicine, University of Salamanca, Spain
| | - Tracy I George
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Karl Sotlar
- Institute of Pathology, University Hospital Salzburg, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Jason Gotlib
- Stanford Cancer Institute/Stanford University School of Medicine, Stanford, Calif
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University (UPMC), Paris, France
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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15
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Hoermann G, Sotlar K, Jawhar M, Kristensen T, Bachelot G, Nedoszytko B, Carter MC, Horny HP, Bonadonna P, Sperr WR, Hartmann K, Brockow K, Lyons JJ, Kluin-Nelemans HC, Hermine O, Akin C, Broesby-Olsen S, Triggiani M, Butterfield JH, Schwaab J, Reiter A, Gotlib J, Metcalfe DD, George TI, Orfao A, Valent P, Arock M. Standards of Genetic Testing in the Diagnosis and Prognostication of Systemic Mastocytosis in 2022: Recommendations of the EU-US Cooperative Group. J Allergy Clin Immunol Pract 2022; 10:1953-1963. [PMID: 35283331 DOI: 10.1016/j.jaip.2022.03.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/23/2022] [Accepted: 03/02/2022] [Indexed: 10/18/2022]
Abstract
Mastocytosis comprises rare heterogeneous diseases characterized by an increased accumulation of abnormal mast cells in various organs/tissues. The pathogenesis of mastocytosis is strongly linked to the presence of KIT-activating mutations. In systemic mastocytosis (SM), the most frequent mutation encountered is KIT p.D816V, whose presence constitutes one of the minor diagnostic criteria. Different techniques are used to search and quantify the KIT p.D816V mutant; however, allele-specific quantitative PCR and droplet digital PCR are today the most sensitive. The analysis of the KIT p.D816V allele burden has undeniable interest for diagnostic, prognostic, and therapeutic monitoring. The analysis of non-mast cell hematological compartments in SM is similarly important because KIT p.D816V multilineage involvement is associated with a worse prognosis. In addition, in advanced forms of SM, mutations in genes other than KIT are frequently identified and affect negatively disease outcome and response to therapy. Thus, combined quantitative and sensitive analysis of KIT mutations and next-generation sequencing of other recurrently involved myeloid genes make it possible to better characterize the extent of the affected cellular compartments and additional molecular aberrations, providing a more detailed overview of the complex mutational landscape of SM, in relation with the clinical heterogeneity of the disease. In this article, we report the latest recommendations of the EU-US Cooperative Group presented in September 2020 in Vienna during an international working conference, on the techniques we consider standard to detect and quantify the KIT p.D816V mutant in SM and additional myeloid mutations found in SM subtypes.
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Affiliation(s)
- Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; MLL Munich Leukemia Laboratory, Munich, Germany.
| | - Karl Sotlar
- Institute of Pathology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Thomas Kristensen
- Department of Pathology, Odense University Hospital, Odense, Denmark
| | - Guillaume Bachelot
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University (UPMC), Paris, France
| | - Boguslaw Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | | | - Wolfgang R Sperr
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel, Basel, Switzerland; University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel, Basel, Switzerland
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
| | - Jonathan J Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hanneke C Kluin-Nelemans
- Department of Haematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Olivier Hermine
- Imagine Institute, Université Paris Descartes, Sorbonne, Paris Cité, Centre national de référence des mastocytoses, Paris, France
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | | | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Jason Gotlib
- Stanford Cancer Institute, Stanford University School of Medicine, Stanford, Calif
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Tracy I George
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC; CSIC/USAL), Instituto Biosanitario de Salamanca, Salamanca, Spain; Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Peter Valent
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria; Department of Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University (UPMC), Paris, France.
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16
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Mateja A, Wang Q, Chovanec J, Kim J, Wilson KJ, Schwartz LB, Glover SC, Carter MC, Metcalfe DD, Brittain E, Lyons JJ. Defining baseline variability of serum tryptase levels improves accuracy in identifying anaphylaxis. J Allergy Clin Immunol 2022; 149:1010-1017.e10. [PMID: 34425177 PMCID: PMC9126046 DOI: 10.1016/j.jaci.2021.08.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/16/2021] [Accepted: 08/12/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND Acute increases of ≥20% + 2 ng/mL (20 + 2 rule) over basal serum tryptase (BST) is the recommended threshold supporting a clinical diagnosis of anaphylaxis. Prospective studies have demonstrated high sensitivity for this algorithm after parenteral exposure, but specificity has not been evaluated. OBJECTIVE We sought to define a serum tryptase change that distinguishes baseline variability from anaphylaxis on the basis of intraindividual variation in BST. METHODS Ninety-three total subjects with atopy (n = 62) or hereditary α-tryptasemia (HαT) (n = 31) and ≥2 BST measurements were identified. Sequential BST variability measurements were modeled and threshold ratios that optimized sensitivity and/or specificity determined. Models were tested in 22 individuals with physician-diagnosed anaphylaxis and validated in independent cohorts of individuals with HαT (n = 33), indolent systemic mastocytosis (ISM) (n = 52), and ISM + HαT (n = 12). Mature tryptase levels were measured in HαT (n = 19) and ISM (n = 20). An online application was developed for clinical use. RESULTS As a result of BST variability, 9.7% (9/93) of primary cohort patients, and 18% (6/33) of HαT, 30% (16/53) of ISM, and 25% (3/12) of ISM + HαT patients from validation cohorts met the 20 + 2 rule despite absent immediate hypersensitivity symptoms; mature tryptase was noncontributory among individuals with HαT or ISM at baseline. A ratio of acute tryptase/BST exceeding 1.685 provided the optimized diagnostic rule for jointly maximizing sensitivity and specificity. Statistically significant improvement in specificity relative to the 20 + 2 rule was observed among individuals with elevated BST caused by HαT and ISM. CONCLUSIONS Using an acute tryptase/BST ratio of 1.685 improves specificity of measured changes among individuals with HαT and ISM while maintaining high sensitivity for confirmation of anaphylaxis.
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Affiliation(s)
- Allyson Mateja
- Clinical Monitoring Research Program Directorate, Frederick National Laboratory for Cancer Research
| | - Qinlu Wang
- Bioinformatics and Computational Biosciences Branch, Office of Cyber Infrastructure and Computational Biology, NIAID, NIH, Bethesda, MD
| | - Jack Chovanec
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Jiwon Kim
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Kenneth J. Wilson
- Division of Digestive Diseases, Department of Medicine, University of Mississippi Medical Center, Jackson, MS
| | - Lawrence B. Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy and Immunology, Virginia Commonwealth University, Richmond, VA
| | - Sarah C. Glover
- Division of Digestive Diseases, Department of Medicine, University of Mississippi Medical Center, Jackson, MS,Division of Gastroenterology, Department of Medicine, University of Florida, Gainesville, FL
| | - Melody C. Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Dean D. Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Erica Brittain
- Biostatistics Research Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD
| | - Jonathan J. Lyons
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD,Correspondence: Dr. Jonathan Lyons, NIH/NIAID/LAD, 9000 Rockville Pike, Building 29B, Room 5NN18, MSC 1889, Bethesda, MD 20892, Phone: (301) 443-5250, Fax: (301) 480-8384,
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17
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Valent P, Akin C, Hartmann K, Alvarez-Twose I, Brockow K, Hermine O, Niedoszytko M, Schwaab J, Lyons JJ, Carter MC, Elberink HO, Butterfield JH, George TI, Greiner G, Ustun C, Bonadonna P, Sotlar K, Nilsson G, Jawhar M, Siebenhaar F, Broesby-Olsen S, Yavuz S, Zanotti R, Lange M, Nedoszytko B, Hoermann G, Castells M, Radia DH, Muñoz-Gonzalez JI, Sperr WR, Triggiani M, Kluin-Nelemans HC, Galli SJ, Schwartz LB, Reiter A, Orfao A, Gotlib J, Arock M, Horny HP, Metcalfe DD. Updated Diagnostic Criteria and Classification of Mast Cell Disorders: A Consensus Proposal. Hemasphere 2021; 5:e646. [PMID: 34901755 PMCID: PMC8659997 DOI: 10.1097/hs9.0000000000000646] [Citation(s) in RCA: 113] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/06/2021] [Indexed: 12/19/2022] Open
Abstract
Mastocytosis is a hematologic neoplasm characterized by expansion and focal accumulation of neoplastic mast cells (MC) in diverse organs, including the skin, bone marrow (BM), spleen, liver, and gastrointestinal tract. The World Health Organization classification divides the disease into prognostically distinct variants of cutaneous mastocytosis (CM) and systemic mastocytosis (SM). Although this classification remains valid, recent developments in the field and the advent of new diagnostic and prognostic parameters created a need to update and refine definitions and diagnostic criteria in MC neoplasms. In addition, MC activation syndromes (MCAS) and genetic features predisposing to SM and MCAS have been identified. To discuss these developments and refinements in the classification, we organized a Working Conference comprised of experts from Europe and the United States in August 2020. This article reports on outcomes from this conference. Of particular note, we propose adjustments in the classification of CM and SM, refinements in diagnostic criteria of SM variants, including smoldering SM and BM mastocytosis (BMM), and updated criteria for MCAS and other conditions involving MC. CD30 expression in MC now qualifies as a minor SM criterion, and BMM is now defined by SM criteria, absence of skin lesions and absence of B- and C-findings. A basal serum tryptase level exceeding 20 ng/mL remains a minor SM criterion, with recognition that hereditary alpha-tryptasemia and various myeloid neoplasms may also cause elevations in tryptase. Our updated proposal will support diagnostic evaluations and prognostication in daily practice and the conduct of clinical trials in MC disorders.
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Affiliation(s)
- Peter Valent
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, Austria
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Austria
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Michigan, USA
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Switzerland
- Department of Biomedicine, University Hospital Basel and University of Basel, Switzerland
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast) and CIBERONC, Hospital Virgen del Valle, Toledo, Spain
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Germany
| | - Olivier Hermine
- Imagine Institute Université de Paris, Sorbonne, Institut national de la santé et de la recherche médicale U1163, Centre national de référence des mastocytoses, Hôpital Necker, Assistance publique hôpitaux de Paris, France
| | | | - Juliana Schwaab
- Department of Hematology and Oncology, University Hospital Mannheim, Germany
| | - Jonathan J. Lyons
- Translational Allergic Immunopathology Unit, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Maryland, USA
| | - Melody C. Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Maryland, USA
| | - Hanneke Oude Elberink
- Department of Allergology, University Medical Center Groningen and GRIAC Research Institute, University of Groningen, The Netherlands
| | | | - Tracy I. George
- Department of Pathology, University of Utah, Salt Lake City, Utah, USA
| | - Georg Greiner
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Austria
- Department of Laboratory Medicine, Medical University of Vienna, Austria and Ihr Labor, Medical Diagnostic Laboratories, Vienna, Austria
| | - Celalettin Ustun
- Division of Hematology, Oncology and Cell Therapy, Department of Medicine, The Coleman Foundation Blood and Marrow Transplant Center at Rush University Medical Center, Chicago, Illinois, USA
| | | | - Karl Sotlar
- Institute of Pathology, Paracelsus Medical University Salzburg, Austria
| | - Gunnar Nilsson
- Department of Medicine Solna & Mastocytosis Centre, Karolinska Institute and Karolinska University Hospital, Stockholm, Sweden
| | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Germany
| | - Frank Siebenhaar
- Dermatological Allergology, Department of Dermatology and Allergy, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt - Universität zu Berlin, and Berlin Institute of Health, Germany
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Selim Yavuz
- Division of Haematology, Department of Internal Medicine, University of Istanbul, Turkey
| | - Roberta Zanotti
- Section of Hematology, Multidisciplinary Outpatients Clinics for Mastocytosis, Department of Medicine, University Hospital of Verona, Italy
| | - Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Poland
| | - Boguslaw Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Poland
- Invicta Fertility and Reproductive Center, Molecular Laboratory, Sopot, Poland
| | - Gregor Hoermann
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Austria
- MLL Munich Leukemia Laboratory, Munich, Germany
| | - Mariana Castells
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Deepti H. Radia
- Department of Clinical Haematology, Guys and St Thomas’ NHS Hospitals, London, United Kingdom
| | - Javier I. Muñoz-Gonzalez
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC; CSIC/USAL) Instituto Biosanitario de Salamanca (IBSAL) and Department of Medicine, University of Salamanca, Spain
| | - Wolfgang R. Sperr
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, Austria
- Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Austria
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Italy
| | - Hanneke C. Kluin-Nelemans
- Department of Haematology, University Medical Center Groningen, University of Groningen, The Netherlands
| | - Stephen J. Galli
- Department of Pathology and the Sean N. Parker Center for Allergy and Asthma Research, Stanford University School of Medicine, Stanford, California, USA
| | - Lawrence B. Schwartz
- Division of Rheumatology, Allergy & Immunology, Department of Internal Medicine, Virginia Commonwealth University (VCU), Richmond, Virginia, USA
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Germany
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC; CSIC/USAL) Instituto Biosanitario de Salamanca (IBSAL) and Department of Medicine, University of Salamanca, Spain
| | - Jason Gotlib
- Stanford Cancer Institute/Stanford University School of Medicine/Stanford Cancer Institute, Stanford, California, USA
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University (UPMC), Paris, France
| | - Hans-Peter Horny
- Institute of Pathology, Paracelsus Medical University Salzburg, Austria
- Institute of Pathology, Ludwig-Maximilians-University, Munich, Germany
| | - Dean D. Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, NIAID, NIH, Bethesda, Maryland, USA
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Abstract
Historically, understanding of the human mast cell (MC) compartment has lagged behind the appreciation of other cell lineages. MCs exist in vascularised tissues but do not under normal circumstances circulate in blood, and there has been no pharmacological agent identified that totally and selectively inhibits human MC function. There are no substantiated accounts of an apparently healthy individual who is severely lacking in MCs. Thus, some of the approaches employed to understand the function of a specific immune cell are not available to the MC biologist. The disease categories that have provided the greatest insight into MC biology have been monoclonal and IgE-mediated MC disorders. This has led to the categorisation of MC diseases as intrinsic or extrinsic to the MC compartment and to the recognition of the role of mediators in MC activation disorders. Mastocytosis as a clonal disorder not only impacts the MC compartment through changes intrinsic to the MC, but also by the effects of episodes of significant release of MC mediators. The availability of newer therapeutic approaches developed to treat monoclonal MC disorders offer insights into how to more selectively approach management of MC centric diseases.
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Affiliation(s)
- Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
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19
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Deepak V, Komarow HD, Alblaihess AA, Carter MC, Metcalfe DD, Ali H. Expression of MRGPRX2 in skin mast cells of patients with maculopapular cutaneous mastocytosis. J Allergy Clin Immunol Pract 2021; 9:3841-3843.e1. [PMID: 34182161 PMCID: PMC8511159 DOI: 10.1016/j.jaip.2021.05.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/21/2021] [Accepted: 05/28/2021] [Indexed: 11/18/2022]
Affiliation(s)
- Vishwa Deepak
- Department of Basic and Translational Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, Pa
| | - Hirsh D Komarow
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Abdulaziz A Alblaihess
- Department of Basic and Translational Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, Pa; Department of Periodontics and Community Dentistry, King Saud University, College of Dentistry, Riyadh, Saudi Arabia
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hydar Ali
- Department of Basic and Translational Sciences, University of Pennsylvania, School of Dental Medicine, Philadelphia, Pa.
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20
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Gülen T, Akin C, Bonadonna P, Siebenhaar F, Broesby-Olsen S, Brockow K, Niedoszytko M, Nedoszytko B, Oude Elberink HNG, Butterfield JH, Sperr WR, Alvarez-Twose I, Horny HP, Sotlar K, Schwaab J, Jawhar M, Zanotti R, Nilsson G, Lyons JJ, Carter MC, George TI, Hermine O, Gotlib J, Orfao A, Triggiani M, Reiter A, Hartmann K, Castells M, Arock M, Schwartz LB, Metcalfe DD, Valent P. Selecting the Right Criteria and Proper Classification to Diagnose Mast Cell Activation Syndromes: A Critical Review. J Allergy Clin Immunol Pract 2021; 9:3918-3928. [PMID: 34166845 DOI: 10.1016/j.jaip.2021.06.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/05/2021] [Accepted: 06/11/2021] [Indexed: 11/17/2022]
Abstract
In recent years, knowledge about mechanisms underlying mast cell activation (MCA) and accumulation in various pathologic conditions increased substantially. In addition, criteria and a classification of MCA syndromes (MCASs) have been set forth. MCAS is defined by typical clinical symptoms, a substantial increase in serum tryptase level during an attack over the patient's baseline tryptase, and a response of the symptoms to drugs targeting mast cells, mediator production, and/or mediator effects. Alternative diagnostic criteria of MCAS have also been suggested, but these alternative criteria often lack specificity and validation. In this report, we critically review the contemporary literature relating to MCAS and compare the specificity, sensitivity, and strength of MCAS-related parameters within proposals to diagnose and classify MCAS and its variants. Furthermore, we highlight the need to apply specific consensus criteria in the evaluation and classification of MCAS in individual patients. This is an urgent and important medical necessity because as an increasing number of patients are being given a misdiagnosis of MCAS based on nonspecific criteria, which contributes to confusion and frustration by patients and caregivers and sometimes may delay recognition and treatment of correct medical conditions that often turn out to be unrelated to MCA.
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Affiliation(s)
- Theo Gülen
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital Huddinge, Stockholm, Sweden; Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet, Stockholm, Sweden.
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
| | | | - Frank Siebenhaar
- Dermatological Allergology, Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Germany
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Boguslaw Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland; Invicta Fertility and Reproductive Center, Molecular Laboratory, Sopot, Poland
| | - Hanneke N G Oude Elberink
- Department of Allergology, GRIAC Research Institute, University of Groningen, University Medical Center of Groningen, Groningen, The Netherlands
| | | | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast) and CIBERONC, Hospital Virgen del Valle, Toledo, Spain
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilian University, Munich, Germany
| | - Karl Sotlar
- Institute of Pathology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | | | - Mohamad Jawhar
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Roberta Zanotti
- Department of Medicine, Section of Hematology, University of Verona, Verona, Italy
| | - Gunnar Nilsson
- Department of Medicine Solna, Division of Immunology and Allergy, Karolinska Institutet, Stockholm, Sweden
| | - Jonathan J Lyons
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Tracy I George
- Department of Pathology, University of Utah, Salt Lake City, Utah
| | - Olivier Hermine
- Imagine Institute Université Paris Descartes, Sorbonne, Paris Cité, Centre National de Référence des Mastocytoses, Paris, France
| | - Jason Gotlib
- Stanford Cancer Institute/Stanford University School of Medicine, Stanford, Calif
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC; CSIC/USAL), IBSAL, CIBERONC and Department of Medicine, University of Salamanca, Salamanca, Spain
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Andreas Reiter
- Department of Hematology and Oncology, University Hospital Mannheim, Mannheim, Germany
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, Basel, Switzerland; Department of Biomedicine, University Hospital Basel and University of Basel, Basel, Switzerland
| | - Mariana Castells
- Brigham and Women's Hospital, Mastocytosis Center, Harvard Medical School, Boston, Mass
| | - Michel Arock
- Department of Hematological Biology, Pitié-Salpêtrière Hospital, Pierre et Marie Curie University (UPMC), Paris, France
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy, and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
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21
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Carter MC. Children with flushing and diarrhea: Is it mast cell activation? Ann Allergy Asthma Immunol 2021; 127:405-406. [PMID: 34004280 DOI: 10.1016/j.anai.2021.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/30/2021] [Accepted: 05/07/2021] [Indexed: 12/27/2022]
Affiliation(s)
- Melody C Carter
- National Institute of Allergy and Infecious Diseaes, Laboratory of Allergic Diseases, National Institutes of Health, Bethesda, Maryland.
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22
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Gotlib J, George TI, Carter MC, Austen KF, Bochner B, Dwyer DF, Lyons JJ, Hamilton MJ, Butterfield J, Bonadonna P, Weiler C, Galli SJ, Schwartz LB, Elberink HO, Maitland A, Theoharides T, Ustun C, Horny HP, Orfao A, Deininger M, Radia D, Jawhar M, Kluin-Nelemans H, Metcalfe DD, Arock M, Sperr WR, Valent P, Castells M, Akin C. Proceedings from the Inaugural American Initiative in Mast Cell Diseases (AIM) Investigator Conference. J Allergy Clin Immunol 2021; 147:2043-2052. [PMID: 33745886 DOI: 10.1016/j.jaci.2021.03.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/28/2021] [Accepted: 03/05/2021] [Indexed: 02/07/2023]
Abstract
The American Initiative in Mast Cell Diseases (AIM) held its inaugural investigator conference at Stanford University School of Medicine in May 2019. The overarching goal of this meeting was to establish a Pan-American organization of physicians and scientists with multidisciplinary expertise in mast cell disease. To serve this unmet need, AIM envisions a network where basic, translational, and clinical researchers could establish collaborations with both academia and biopharma to support the development of new diagnostic methods, enhanced understanding of the biology of mast cells in human health and disease, and the testing of novel therapies. In these AIM proceedings, we highlight selected topics relevant to mast cell biology and provide updates regarding the recently described hereditary alpha-tryptasemia. In addition, we discuss the evaluation and treatment of mast cell activation (syndromes), allergy and anaphylaxis in mast cell disorders, and the clinical and biologic heterogeneity of the more indolent forms of mastocytosis. Because mast cell disorders are relatively rare, AIM hopes to achieve a coordination of scientific efforts not only in the Americas but also in Europe by collaborating with the well-established European Competence Network on Mastocytosis.
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Affiliation(s)
- Jason Gotlib
- Division of Hematology, Stanford University School of Medicine/Stanford Cancer Institute, Stanford, Calif.
| | - Tracy I George
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, Utah
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - K Frank Austen
- Department of Medicine, Division of Rheumatology, Immunology and Allergy, Brigham & Women's Hospital, Boston, Mass
| | - Bruce Bochner
- Department of Medicine, Division of Allergy and Immunology, Northwestern University Feinberg School of Medicine, Chicago, Ill
| | - Daniel F Dwyer
- Department of Medicine, Division of Rheumatology, Immunology and Allergy, Brigham & Women's Hospital, Boston, Mass
| | - Jonathan J Lyons
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Matthew J Hamilton
- Division of Gastroenterology, Hepatology and Endoscopy. Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | | | | | | | - Stephen J Galli
- Department of Pathology, Stanford University School of Medicine, Stanford, Calif; Department of Microbiology and Immunology, Stanford University School of Medicine, Stanford, Calif
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy and Immunology, Virginia Commonwealth University, Richmond, Va
| | - Hanneke Oude Elberink
- Internal Medicine, Section Allergology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Anne Maitland
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Celalettin Ustun
- Division of Hematology, Oncology and Cellular Therapy, Department of Medicine, Rush University, Chicago, Ill
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilian-University, Munich, Germany
| | - Alberto Orfao
- Servicio Central de Citometria, Centro de Investigacion del Cancer (IBMCC, CSIC/USAL), IBSAL, CIBERONC and Department of Medicine, University of Salamanca, Salamanca, Germany
| | - Michael Deininger
- Division of Hematology and Hematologic Malignancies, The University of Utah, and Huntsman Cancer Institute, Salt Lake City, Utah
| | - Deepti Radia
- Department of Clinical Haematology, Guys and St Thomas' NHS Hospitals, London, United Kingdom
| | - Mohamad Jawhar
- University Hospital Mannheim, Heidelberg University, Mannheim, Germany
| | - Hanneke Kluin-Nelemans
- Department of Haematology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Michel Arock
- Laboratory of Haematology, Pitié-Salpêtrière Hospital, Paris, France
| | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology and Hemostaseology, Medical University of Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria
| | - Mariana Castells
- Brigham and Women's Hospital, Division of Allergy and Clinical Immunology, Boston, Mass; Harvard Medical School, Boston, Mass
| | - Cem Akin
- Division of Allergy and Immunology, University of Michigan, Ann Arbor, Mich
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23
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Lange M, Hartmann K, Carter MC, Siebenhaar F, Alvarez-Twose I, Torrado I, Brockow K, Renke J, Irga-Jaworska N, Plata-Nazar K, Ługowska-Umer H, Czarny J, Belloni Fortina A, Caroppo F, Nowicki RJ, Nedoszytko B, Niedoszytko M, Valent P. Molecular Background, Clinical Features and Management of Pediatric Mastocytosis: Status 2021. Int J Mol Sci 2021; 22:2586. [PMID: 33806685 PMCID: PMC7961542 DOI: 10.3390/ijms22052586] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/24/2021] [Accepted: 02/27/2021] [Indexed: 12/12/2022] Open
Abstract
Pediatric mastocytosis is a heterogeneous disease characterized by accumulation of mast cells in the skin and less frequently in other organs. Somatic or germline mutations in the KIT proto-oncogene are detected in most patients. Cutaneous mastocytosis is the most common form of the disease in children. In the majority of cases, skin lesions regress spontaneously around puberty. However, in few patients, mastocytosis is not a self-limiting disease, but persists into adulthood and can show signs of systemic involvement, especially when skin lesions are small-sized and monomorphic. Children with mastocytosis often suffer from mast cell mediator-related symptoms. Severe hypersensitivity reactions can also occur, mostly in patients with extensive skin lesions and blistering. In a substantial number of these cases, the triggering factor of anaphylaxis remains unidentified. Management of pediatric mastocytosis is mainly based on strict avoidance of triggers, treatment with H1 and H2 histamine receptor blockers, and equipment of patients and their families with epinephrine auto-injectors for use in severe anaphylactic reactions. Advanced systemic mastocytosis occurs occasionally. All children with mastocytosis require follow-up examinations. A bone marrow investigation is performed when advanced systemic mastocytosis is suspected and has an impact on therapy or when cutaneous disease persists into adulthood.
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Affiliation(s)
- Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (H.Ł.-U.); (J.C.); (R.J.N.); (B.N.)
| | - Karin Hartmann
- Division of Allergy, Department of Dermatology, University Hospital Basel and University of Basel, 4031 Basel, Switzerland;
- Department of Biomedicine, University Hospital Basel and University of Basel, 4031 Basel, Switzerland
| | - Melody C. Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Frank Siebenhaar
- Dermatological Allergology, Department of Dermatology and Allergy, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, 10117 Berlin, Germany;
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla-La Mancha (CLMast)—Spanish Reference Center for Mastocytosis, Hospital Virgen del Valle—Complejo Hospitalario de Toledo, 45071 Toledo, Spain; (I.A.-T.); (I.T.)
| | - Inés Torrado
- Instituto de Estudios de Mastocitosis de Castilla-La Mancha (CLMast)—Spanish Reference Center for Mastocytosis, Hospital Virgen del Valle—Complejo Hospitalario de Toledo, 45071 Toledo, Spain; (I.A.-T.); (I.T.)
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, 80802 Munich, Germany;
| | - Joanna Renke
- Department of Pediatrics, Hematology and Oncology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (J.R.); (N.I.-J.)
| | - Ninela Irga-Jaworska
- Department of Pediatrics, Hematology and Oncology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (J.R.); (N.I.-J.)
| | - Katarzyna Plata-Nazar
- Department of Pediatrics, Pediatric Gastroenterology, Allergology and Nutrition, Medical University of Gdańsk, 80-211 Gdańsk, Poland;
| | - Hanna Ługowska-Umer
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (H.Ł.-U.); (J.C.); (R.J.N.); (B.N.)
| | - Justyna Czarny
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (H.Ł.-U.); (J.C.); (R.J.N.); (B.N.)
| | - Anna Belloni Fortina
- Pediatric Dermatology Unit, Department of Medicine DIMED, University of Padua, 35128 Padua, Italy; (A.B.F.); (F.C.)
| | - Francesca Caroppo
- Pediatric Dermatology Unit, Department of Medicine DIMED, University of Padua, 35128 Padua, Italy; (A.B.F.); (F.C.)
| | - Roman J. Nowicki
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (H.Ł.-U.); (J.C.); (R.J.N.); (B.N.)
| | - Bogusław Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, 80-211 Gdańsk, Poland; (H.Ł.-U.); (J.C.); (R.J.N.); (B.N.)
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdańsk, 80-211 Gdańsk, Poland;
| | - Peter Valent
- Division of Hematology and Hemostaseology, Department of Internal Medicine I, Medical University of Vienna, 1090 Vienna, Austria;
- Ludwig Boltzmann Institute for Hematology and Hemostaseology, Medical University of Vienna, 1090 Vienna, Austria
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24
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Carter MC, Maric I, Brittain EH, Bai Y, Lumbard K, Bolan H, Cantave D, Scott LM, Metcalfe DD. A randomized double-blind, placebo-controlled study of omalizumab for idiopathic anaphylaxis. J Allergy Clin Immunol 2021; 147:1004-1010.e2. [DOI: 10.1016/j.jaci.2020.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 02/05/2023]
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25
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Demain JG, Carter MC. Urticaria Pigmentosa in a Child: Special Considerations for Vaccines, Dietary Concerns, and Other Management. J Allergy Clin Immunol Pract 2021; 9:1761-1762. [PMID: 33593685 DOI: 10.1016/j.jaip.2021.01.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/12/2022]
Affiliation(s)
- Jeffrey G Demain
- Allergy Asthma & Immunology Center of Alaska, University of Washington, Seattle, Wash
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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26
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Lyons JJ, Chovanec J, O'Connell MP, Liu Y, Šelb J, Zanotti R, Bai Y, Kim J, Le QT, DiMaggio T, Schwartz LB, Komarow HD, Rijavec M, Carter MC, Milner JD, Bonadonna P, Metcalfe DD, Korošec P. Heritable risk for severe anaphylaxis associated with increased α-tryptase-encoding germline copy number at TPSAB1. J Allergy Clin Immunol 2020; 147:622-632. [PMID: 32717252 DOI: 10.1016/j.jaci.2020.06.035] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 06/10/2020] [Accepted: 06/15/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND An elevated basal serum tryptase level is associated with severe systemic anaphylaxis, most notably caused by Hymenoptera envenomation. Although clonal mast cell disease is the culprit in some individuals, it does not fully explain this clinical association. OBJECTIVE Our aim was to determine the prevalence and associated impact of tryptase genotypes on anaphylaxis in humans. METHODS Cohorts with systemic mastocytosis (SM) and venom as well as idiopathic anaphylaxis from referral centers in Italy, Slovenia, and the United States, underwent tryptase genotyping by droplet digital PCR. Associated anaphylaxis severity (Mueller scale) was subsequently examined. Healthy volunteers and controls with nonatopic disease were recruited and tryptase was genotyped by droplet digital PCR and in silico analysis of genome sequence, respectively. The effects of pooled and recombinant human tryptases, protease activated receptor 2 agonist and antagonist peptides, and a tryptase-neutralizing mAb on human umbilical vein endothelial cell permeability were assayed using a Transwell system. RESULTS Hereditary α-tryptasemia (HαT)-a genetic trait caused by increased α-tryptase-encoding Tryptase-α/β1 (TPSAB1) copy number resulting in elevated BST level-was common in healthy individuals (5.6% [n = 7 of 125]) and controls with nonatopic disease (5.3% [n = 21 of 398]). HαT was associated with grade IV venom anaphylaxis (relative risk = 2.0; P < .05) and more prevalent in both idiopathic anaphylaxis (n = 8 of 47; [17%; P = .006]) and SM (n = 10 of 82 [12.2%; P = .03]) relative to the controls. Among patients with SM, concomitant HαT was associated with increased risk for systemic anaphylaxis (relative risk = 9.5; P = .007). In vitro, protease-activated receptor-2-dependent vascular permeability was induced by pooled mature tryptases but not α- or β-tryptase homotetramers. CONCLUSIONS Risk for severe anaphylaxis in humans is associated with inherited differences in α-tryptase-encoding copies at TPSAB1.
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Affiliation(s)
- Jonathan J Lyons
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Jack Chovanec
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Michael P O'Connell
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Yihui Liu
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Julij Šelb
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | - Roberta Zanotti
- Department of Medicine, Section of Hematology, Verona, Italy
| | - Yun Bai
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jiwon Kim
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Quang T Le
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Va
| | - Tom DiMaggio
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Lawrence B Schwartz
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Va
| | - Hirsh D Komarow
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Matija Rijavec
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Joshua D Milner
- Division of Allergy, Immunology and Rheumatology, Columbia University, New York, New York
| | | | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Peter Korošec
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
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27
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Golden DBK, Carter MC. Insect Sting Anaphylaxis-Or Mastocytosis-Or Something Else? J Allergy Clin Immunol Pract 2020; 7:1117-1123. [PMID: 30961837 DOI: 10.1016/j.jaip.2019.01.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/07/2019] [Accepted: 01/09/2019] [Indexed: 12/18/2022]
Abstract
Insect sting anaphylaxis and mast cell disorders are intertwined in a specific and unusual way. There may be specific subsets of clonal mast cell disorders that are predisposed to sting anaphylaxis. The clinical characteristics of the sting reactions should raise suspicion of underlying mastocytosis (eg, hypotension without hives especially in a male). A baseline serum tryptase level is helpful in the evaluation of patients with insect sting anaphylaxis because it correlates with important risks for these patients, and they have a high frequency of abnormally elevated baseline levels. Elevated baseline serum tryptase level has been reported to correlate with clonal mast cell disease in patients with insect sting anaphylaxis but may also indicate one of several possible underlying syndromes, including mast cell activation syndrome (MCAS), familial hypertryptasemia, and idiopathic anaphylaxis. There is some overlap in these conditions, so it is important to evaluate the clinical pattern at presentation as well as laboratory markers, and to consider bone marrow biopsy to make a final and specific diagnosis of clonal mast cell disease. The presence of venom-IgE does not prove that the patient's previous sting reactions were IgE-mediated, but even low levels of venom-IgE in patients with mastocytosis predispose to severe sting anaphylaxis. Evaluation of all these possible factors will affect the recommendation for venom immunotherapy.
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Affiliation(s)
- David B K Golden
- Allergy and Clinical Immunology, Johns Hopkins University, Baltimore, Md.
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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28
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Köhler S, Carmody L, Vasilevsky N, Jacobsen JOB, Danis D, Gourdine JP, Gargano M, Harris NL, Matentzoglu N, McMurry JA, Osumi-Sutherland D, Cipriani V, Balhoff JP, Conlin T, Blau H, Baynam G, Palmer R, Gratian D, Dawkins H, Segal M, Jansen AC, Muaz A, Chang WH, Bergerson J, Laulederkind SJF, Yüksel Z, Beltran S, Freeman AF, Sergouniotis PI, Durkin D, Storm AL, Hanauer M, Brudno M, Bello SM, Sincan M, Rageth K, Wheeler MT, Oegema R, Lourghi H, Della Rocca MG, Thompson R, Castellanos F, Priest J, Cunningham-Rundles C, Hegde A, Lovering RC, Hajek C, Olry A, Notarangelo L, Similuk M, Zhang XA, Gómez-Andrés D, Lochmüller H, Dollfus H, Rosenzweig S, Marwaha S, Rath A, Sullivan K, Smith C, Milner JD, Leroux D, Boerkoel CF, Klion A, Carter MC, Groza T, Smedley D, Haendel MA, Mungall C, Robinson PN. Expansion of the Human Phenotype Ontology (HPO) knowledge base and resources. Nucleic Acids Res 2020; 47:D1018-D1027. [PMID: 30476213 PMCID: PMC6324074 DOI: 10.1093/nar/gky1105] [Citation(s) in RCA: 403] [Impact Index Per Article: 100.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 10/24/2018] [Indexed: 12/12/2022] Open
Abstract
The Human Phenotype Ontology (HPO)—a standardized vocabulary of phenotypic abnormalities associated with 7000+ diseases—is used by thousands of researchers, clinicians, informaticians and electronic health record systems around the world. Its detailed descriptions of clinical abnormalities and computable disease definitions have made HPO the de facto standard for deep phenotyping in the field of rare disease. The HPO’s interoperability with other ontologies has enabled it to be used to improve diagnostic accuracy by incorporating model organism data. It also plays a key role in the popular Exomiser tool, which identifies potential disease-causing variants from whole-exome or whole-genome sequencing data. Since the HPO was first introduced in 2008, its users have become both more numerous and more diverse. To meet these emerging needs, the project has added new content, language translations, mappings and computational tooling, as well as integrations with external community data. The HPO continues to collaborate with clinical adopters to improve specific areas of the ontology and extend standardized disease descriptions. The newly redesigned HPO website (www.human-phenotype-ontology.org) simplifies browsing terms and exploring clinical features, diseases, and human genes.
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Affiliation(s)
- Sebastian Köhler
- Charité Centrum für Therapieforschung, Charité-Universitätsmedizin Berlin Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany.,Einstein Center Digital Future, Berlin 10117, Germany.,Monarch Initiative, monarchinitiative.org
| | - Leigh Carmody
- Monarch Initiative, monarchinitiative.org.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Nicole Vasilevsky
- Monarch Initiative, monarchinitiative.org.,Oregon Health & Science University, Portland, OR 97217, USA
| | - Julius O B Jacobsen
- Monarch Initiative, monarchinitiative.org.,Genomics England, Queen Mary University of London, Dawson Hall, Charterhouse Square, London EC1M 6BQ, UK
| | - Daniel Danis
- Monarch Initiative, monarchinitiative.org.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Jean-Philippe Gourdine
- Monarch Initiative, monarchinitiative.org.,Oregon Health & Science University, Portland, OR 97217, USA
| | - Michael Gargano
- Monarch Initiative, monarchinitiative.org.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Nomi L Harris
- Monarch Initiative, monarchinitiative.org.,Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Nicolas Matentzoglu
- Monarch Initiative, monarchinitiative.org.,European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Cambridge, UK
| | - Julie A McMurry
- Monarch Initiative, monarchinitiative.org.,Linus Pauling institute, Oregon State University, Corvallis, OR, USA
| | - David Osumi-Sutherland
- Monarch Initiative, monarchinitiative.org.,European Bioinformatics Institute (EMBL-EBI), Wellcome Trust Genome Campus, Cambridge, UK
| | - Valentina Cipriani
- Monarch Initiative, monarchinitiative.org.,William Harvey Research Institute, Queen Mary University College of London.,UCL Genetics Institute, University College of London.,UCL Institute of Ophthalmology, University College of London
| | - James P Balhoff
- Monarch Initiative, monarchinitiative.org.,Renaissance Computing Institute, University of North Carolina at Chapel Hill
| | - Tom Conlin
- Monarch Initiative, monarchinitiative.org.,Linus Pauling institute, Oregon State University, Corvallis, OR, USA
| | - Hannah Blau
- Monarch Initiative, monarchinitiative.org.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Gareth Baynam
- Western Australian Register of Developmental Anomalies and Genetic Services of Western Australia, Department of Health, Government of Western Australia, WA, Australia.,School of Paediatrics and Telethon Kids Institute, University of Western Australia, Perth, WA, Australia.,Institute for Immunology and Infectious Diseases, Murdoch University, Perth, WA, Australia.,Spatial Sciences, Department of Science and Engineering, Curtin University, Perth, WA, Australia.,The Office of Population Health Genomics, Department of Health, Government of Western Australia, Perth, WA, Australia
| | - Richard Palmer
- Spatial Sciences, Department of Science and Engineering, Curtin University, Perth, WA, Australia
| | - Dylan Gratian
- Western Australian Register of Developmental Anomalies and Genetic Services of Western Australia, Department of Health, Government of Western Australia, WA, Australia
| | - Hugh Dawkins
- The Office of Population Health Genomics, Department of Health, Government of Western Australia, Perth, WA, Australia
| | | | - Anna C Jansen
- Neurogenetics Research Group, Vrije Universiteit Brussel, Brussels, Belgium.,Pediatric Neurology Unit, Department of Pediatrics, UZ Brussel, Brussels, Belgium
| | - Ahmed Muaz
- Monarch Initiative, monarchinitiative.org.,Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW 2010, Australia
| | - Willie H Chang
- Centre for Computational Medicine, Hospital for Sick Children and Department of Computer Science, University of Toronto, Toronto, Canada
| | - Jenna Bergerson
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Stanley J F Laulederkind
- Rat Genome Database, Department of Biomedical Engineering, Medical College of Wisconsin & Marquette University, 8701 Watertown Plank Road Milwaukee, WI 53226, USA
| | | | - Sergi Beltran
- CNAG-CRG, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Baldiri Reixac 4, Barcelona 08028, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain
| | - Alexandra F Freeman
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | | | - Daniel Durkin
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Andrea L Storm
- ICF, Rockville, MD, USA.,National Center for Advancing Translational Sciences, Office of Rare Diseases Research, National Institutes of Health, Bethesda, MD, USA
| | - Marc Hanauer
- INSERM, US14-Orphanet, Plateforme Maladies Rares, 75014 Paris, France
| | - Michael Brudno
- Centre for Computational Medicine, Hospital for Sick Children and Department of Computer Science, University of Toronto, Toronto, Canada
| | | | - Murat Sincan
- Sanford Imagenetics, Sanford Health, Sioux Falls, SD, USA
| | - Kayli Rageth
- Sanford Imagenetics, Sanford Health, Sioux Falls, SD, USA
| | - Matthew T Wheeler
- Center for Undiagnosed Diseases, Stanford University School of Medicine, Stanford, CA, USA
| | - Renske Oegema
- Department of Genetics, University Medical Center Utrecht, the Netherlands
| | - Halima Lourghi
- INSERM, US14-Orphanet, Plateforme Maladies Rares, 75014 Paris, France
| | - Maria G Della Rocca
- ICF, Rockville, MD, USA.,National Center for Advancing Translational Sciences, Office of Rare Diseases Research, National Institutes of Health, Bethesda, MD, USA
| | - Rachel Thompson
- Institute of Genetic Medicine, Newcastle University, Newcastle upon Tyne, UK
| | | | - James Priest
- Department of Pediatrics, Stanford University School of Medicine, Stanford, CA, USA
| | | | - Ayushi Hegde
- The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - Ruth C Lovering
- Institute of Cardiovascular Science, University College London, UK
| | | | - Annie Olry
- INSERM, US14-Orphanet, Plateforme Maladies Rares, 75014 Paris, France
| | - Luigi Notarangelo
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Morgan Similuk
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Xingmin A Zhang
- Monarch Initiative, monarchinitiative.org.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA
| | - David Gómez-Andrés
- Child Neurology Unit. Hospital Universitari Vall d'Hebron, Vall d'Hebron Research Institute (VHIR), Barcelona, Spain
| | - Hanns Lochmüller
- CNAG-CRG, Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Baldiri Reixac 4, Barcelona 08028, Spain.,Department of Neuropediatrics and Muscle Disorders, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany.,Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, Canada.,Division of Neurology, Department of Medicine, The Ottawa Hospital, Ottawa, Canada
| | - Hélène Dollfus
- Centre for Rare Eye Diseases CARGO, SENSGENE FSMR Network, Strasbourg University Hospital, Strasbourg, France
| | - Sergio Rosenzweig
- Immunology Service, Department of Laboratory Medicine, NIH Clinical Center, Bethesda, MD, USA
| | - Shruti Marwaha
- Center for Undiagnosed Diseases, Stanford University School of Medicine, Stanford, CA, USA
| | - Ana Rath
- INSERM, US14-Orphanet, Plateforme Maladies Rares, 75014 Paris, France
| | - Kathleen Sullivan
- Department of Pediatrics, Division of Allergy Immunology, The Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, 3615 Civic Center Boulevard, Philadelphia, PA 19104, USA
| | | | - Joshua D Milner
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Dorothée Leroux
- Centre for Rare Eye Diseases CARGO, SENSGENE FSMR Network, Strasbourg University Hospital, Strasbourg, France
| | | | - Amy Klion
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Melody C Carter
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Tudor Groza
- Monarch Initiative, monarchinitiative.org.,Garvan Institute of Medical Research, Darlinghurst, Sydney, NSW 2010, Australia
| | - Damian Smedley
- Monarch Initiative, monarchinitiative.org.,Genomics England, Queen Mary University of London, Dawson Hall, Charterhouse Square, London EC1M 6BQ, UK
| | - Melissa A Haendel
- Monarch Initiative, monarchinitiative.org.,Oregon Health & Science University, Portland, OR 97217, USA.,Linus Pauling institute, Oregon State University, Corvallis, OR, USA
| | - Chris Mungall
- Monarch Initiative, monarchinitiative.org.,Environmental Genomics and Systems Biology, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Peter N Robinson
- Monarch Initiative, monarchinitiative.org.,The Jackson Laboratory for Genomic Medicine, Farmington, CT 06032, USA.,Institute for Systems Genomics, University of Connecticut, Farmington, CT, USA
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29
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Carter MC, Akin C, Castells MC, Scott EP, Lieberman P. Idiopathic anaphylaxis yardstick: Practical recommendations for clinical practice. Ann Allergy Asthma Immunol 2019; 124:16-27. [PMID: 31513910 DOI: 10.1016/j.anai.2019.08.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/20/2019] [Accepted: 08/27/2019] [Indexed: 12/18/2022]
Abstract
Anaphylaxis is considered idiopathic when there is no known trigger. The signs and symptoms of idiopathic anaphylaxis (IA) are identical to those of anaphylaxis because of a known cause and can include cutaneous, circulatory, respiratory, gastrointestinal, and neurologic symptoms. Idiopathic anaphylaxis can be a frustrating disease for patients and health care providers. Episodes are unpredictable, and differential diagnosis is challenging. Current anaphylaxis guidelines have little specific guidance regarding differential diagnosis and long-term management of IA. Therefore, the objective of the Idiopathic Anaphylaxis Yardstick is to use published data and the authors' combined clinical experience to provide practical recommendations for the diagnosis and management of patients with IA.
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Affiliation(s)
| | - Cem Akin
- Department of Medicine, University of Michigan, Ann Arbor, Michigan
| | - Mariana C Castells
- Department of Medicine, Division of Rheumatology, Immunology, and Allergy, Mastocytosis Center, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | | | - Phil Lieberman
- Departments of Medicine and Pediatrics, Divisions of Allergy and Immunology, University of Tennessee, Memphis, Tennessee.
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30
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Jenkinson HA, Lundgren AD, Carter MC, Diaz LZ, Levy ML. Management of a neonate with diffuse cutaneous mastocytosis: Case report and literature review. Pediatr Dermatol 2019; 36:486-489. [PMID: 30828864 DOI: 10.1111/pde.13801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Mastocytosis is an accumulation of clonal mast cells within tissues, commonly caused by mutations in the KIT proto-oncogene. This report describes the management of a neonate with diffuse cutaneous mastocytosis (DCM) caused by a rare activating KIT mutation, specifically internal tandem duplication of the Ala502Tyr503 pair on exon 9, and reviews current data regarding work-up of DCM in pediatric patients.
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Affiliation(s)
- Helena A Jenkinson
- Department of Dermatology, McGovern Medical School at The University of Texas at Houston, Houston, Texas
| | - Ashley D Lundgren
- Department of Internal Medicine (Dermatology), Dell Medical School at The University of Texas at Austin, Austin, Texas.,Pediatric/Adolescent Dermatology, Dell Children's Medical Center, Austin, Texas
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland
| | - Lucia Z Diaz
- Department of Internal Medicine (Dermatology), Dell Medical School at The University of Texas at Austin, Austin, Texas.,Pediatric/Adolescent Dermatology, Dell Children's Medical Center, Austin, Texas.,Department of Pediatrics, Dell Medical School, Austin, Texas
| | - Moise L Levy
- Department of Internal Medicine (Dermatology), Dell Medical School at The University of Texas at Austin, Austin, Texas.,Pediatric/Adolescent Dermatology, Dell Children's Medical Center, Austin, Texas.,Department of Pediatrics, Dell Medical School, Austin, Texas
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Desai A, Sowerwine K, Liu Y, Lawrence MG, Chovanec J, Hsu AP, O'Connell MP, Kim J, Boris L, Jones N, Wisch L, Eisch RR, Carter MC, Komarow HD, Zerbe C, Milner JD, Maric I, Sun X, Lee CCR, Tunc I, Pirooznia M, Stone KD, Holland SM, Metcalfe DD, Lyons JJ. GATA-2-deficient mast cells limit IgE-mediated immediate hypersensitivity reactions in human subjects. J Allergy Clin Immunol 2019; 144:613-617.e14. [PMID: 31102699 DOI: 10.1016/j.jaci.2019.05.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/08/2019] [Accepted: 05/06/2019] [Indexed: 01/26/2023]
Affiliation(s)
- Avanti Desai
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Kathryn Sowerwine
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Yihui Liu
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Monica G Lawrence
- Division of Asthma, Allergy and Immunology, Department of Medicine, University of Virginia, Charlottesville, Va
| | - Jack Chovanec
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Amy P Hsu
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Michael P O'Connell
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jiwon Kim
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Lisa Boris
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Nina Jones
- Clinical Research Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Frederick, Md
| | - Laura Wisch
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Robin R Eisch
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh D Komarow
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Christa Zerbe
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Joshua D Milner
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Irina Maric
- Department of Laboratory Medicine, National Institutes of Health, Bethesda, Md
| | - Xiaoping Sun
- Department of Laboratory Medicine, National Institutes of Health, Bethesda, Md
| | - Chyi-Chia R Lee
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Md
| | - Ilker Tunc
- Bioinformatics and Computational Biology Core, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Md
| | - Mehdi Pirooznia
- Bioinformatics and Computational Biology Core, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Md
| | - Kelly D Stone
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Steven M Holland
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jonathan J Lyons
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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32
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Kirshenbaum AS, Abuhay H, Bolan H, Metcalfe DD, Carter MC. Maculopapular Cutaneous Mastocytosis in a Diverse Population. J Allergy Clin Immunol Pract 2019; 7:2845-2847. [PMID: 31056447 DOI: 10.1016/j.jaip.2019.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 04/03/2019] [Accepted: 04/03/2019] [Indexed: 12/01/2022]
Affiliation(s)
- Arnold S Kirshenbaum
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Hanna Abuhay
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hyejeong Bolan
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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33
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Tobío A, Bandara G, Morris DA, Kim DK, O'Connell MP, Komarow HD, Carter MC, Smrz D, Metcalfe DD, Olivera A. Oncogenic D816V-KIT signaling in mast cells causes persistent IL-6 production. Haematologica 2019; 105:124-135. [PMID: 30948489 PMCID: PMC6939509 DOI: 10.3324/haematol.2018.212126] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 04/02/2019] [Indexed: 12/19/2022] Open
Abstract
Persistent dysregulation of IL-6 production and signaling have been implicated in the pathology of various cancers. In systemic mastocytosis, increased serum levels of IL-6 associate with disease severity and progression, although the mechanisms involved are not well understood. Since systemic mastocytosis often associates with the presence in hematopoietic cells of a somatic gain-of-function variant in KIT, D816V-KIT, we examined its potential role in IL-6 upregulation. Bone marrow mononuclear cultures from patients with greater D816V allelic burden released increased amounts of IL-6 which correlated with the percentage of mast cells in the cultures. Intracellular IL-6 staining by flow cytometry and immunofluorescence was primarily associated with mast cells and suggested a higher percentage of IL-6 positive mast cells in patients with higher D816V allelic burden. Furthermore, mast cell lines expressing D816V-KIT, but not those expressing normal KIT or other KIT variants, produced constitutively high IL-6 amounts at the message and protein levels. We further demonstrate that aberrant KIT activity and signaling are critical for the induction of IL-6 and involve STAT5 and PI3K pathways but not STAT3 or STAT4. Activation of STAT5A and STAT5B downstream of D816V-KIT was mediated by JAK2 but also by MEK/ERK1/2, which not only promoted STAT5 phosphorylation but also its long-term transcription. Our study thus supports a role for mast cells and D816V-KIT activity in IL-6 dysregulation in mastocytosis and provides insights into the intracellular mechanisms. The findings contribute to a better understanding of the physiopathology of mastocytosis and suggest the importance of therapeutic targeting of these pathways.
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Affiliation(s)
- Araceli Tobío
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Geethani Bandara
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Denise A Morris
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Do-Kyun Kim
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Michael P O'Connell
- Genetics and Pathogenesis of Allergy Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Hirsh D Komarow
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Daniel Smrz
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
| | - Ana Olivera
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA
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34
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Wood RA, Khan DA, Lang DM, Fasano MB, Peden DB, Busse PJ, Carter MC, Demain JG, Dinakar C, Grayson MH, Markovics SB, Sicherer SH, Stone KD, Sullivan KE, Williams PV, Fleisher TA, Casale TB. American Academy of Allergy, Asthma and Immunology response to the EAACI/GA 2 LEN/EDF/WAO guideline for the definition, classification, diagnosis, and management of Urticaria 2017 revision. Allergy 2019; 74:411-413. [PMID: 30338538 DOI: 10.1111/all.13636] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Robert A. Wood
- Johns Hopkins University School Medicine Baltimore Maryland
| | - David A. Khan
- University of Texas Southwestern Medical Center Dallas Texas
| | | | | | - David B. Peden
- University of North Carolina School of Medicine Chapel Hill North Carolina
| | | | | | | | - Chitra Dinakar
- Stanford University School of Medicine Stanford California
| | | | | | | | - Kelly D. Stone
- NIH/NIAID‐ Laboratory of Allergic Diseases Bethesda Maryland
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35
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Carter MC, Metcalfe DD, Matito A, Escribano L, Butterfield JH, Schwartz LB, Bonadonna P, Zanotti R, Triggiani M, Castells M, Brockow K. Adverse reactions to drugs and biologics in patients with clonal mast cell disorders: A Work Group Report of the Mast Cells Disorder Committee, American Academy of Allergy, Asthma & Immunology. J Allergy Clin Immunol 2018; 143:880-893. [PMID: 30528617 DOI: 10.1016/j.jaci.2018.10.063] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 09/06/2018] [Accepted: 10/09/2018] [Indexed: 12/27/2022]
Abstract
Providers caring for patients with mastocytosis are tasked with the decision to consider therapeutic options. This can come with some trepidation because information available in the public domain lists numerous mast cell (MC) activators based on data that do not discriminate between primates, rodents, and MC lines; do not consider dosage; and do not take into account previous exposure and resultant clinical findings. This being said, there is support in the literature for an enhanced MC response in some patients with mastocytosis and in cases in which there is a greater incidence of adverse reactions associated with certain antigens, such as venoms and drugs. Thus this report provides a comprehensive guide for those providers who must decide on therapeutic options in the management of patients with clonal MC disease.
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Affiliation(s)
- Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Almudena Matito
- Instituto de Estudios de Mastocitosis de Castilla-La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytois (REMA), Toledo, Spain
| | - Luis Escribano
- Servicio General de Citometría, Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and Departamento de Medicina, Universidad de Salamanca and IBSAL, Salamanca, Spain; Spanish Network on Mastocytois (REMA), Toledo, Spain
| | - Joseph H Butterfield
- Division of Allergic Diseases and the Program for Mast Cell and Eosinophil Disorders, Mayo Clinic, Rochester, Minn
| | - Lawrence B Schwartz
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, Va
| | - Patrizia Bonadonna
- Allergy Unit, Azienda Ospedaliera Universitaria Integrata of Verona, Verona, Italy; Multidisplinary Outpatients Clinic for Mastocytosis (GISM), Azienda Ospedaliera Universitaria Integrata of Verona, Verona, Italy
| | - Roberta Zanotti
- Multidisplinary Outpatients Clinic for Mastocytosis (GISM), Azienda Ospedaliera Universitaria Integrata of Verona, Verona, Italy; Department of Medicine, Haematology Unit, Azienda Ospedaliera Universitaria Integrata of Verona, Verona, Italy
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Mariana Castells
- Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
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36
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Carter MC, Bai Y, Ruiz‐Esteves KN, Scott LM, Cantave D, Bolan H, Eisch R, Sun X, Hahn J, Maric I, Metcalfe DD. Detection of
KIT
D816V in peripheral blood of children with manifestations of cutaneous mastocytosis suggests systemic disease. Br J Haematol 2018; 183:775-782. [DOI: 10.1111/bjh.15624] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/24/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Melody C. Carter
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
| | - Yun Bai
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
| | - Karina N. Ruiz‐Esteves
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
| | - Linda M. Scott
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
| | - Daly Cantave
- Department of Nursing, Clinical Center National Institutes of HealthBethesda MD USA
| | - Hyejeong Bolan
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
| | - Robin Eisch
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
| | - Xiaoping Sun
- Hematology Section Department of Laboratory Medicine Clinical Center National Institutes of Health Bethesda MD USA
| | - Jamie Hahn
- Hematology Section Department of Laboratory Medicine Clinical Center National Institutes of Health Bethesda MD USA
| | - Irina Maric
- Hematology Section Department of Laboratory Medicine Clinical Center National Institutes of Health Bethesda MD USA
| | - Dean D. Metcalfe
- Mast Cell Biology Section Laboratory of Allergic Diseases National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda MD USA
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Valent P, Akin C, Bonadonna P, Hartmann K, Broesby-Olsen S, Brockow K, Butterfield JH, Reiter A, Gotlib J, Castells M, Milner JD, Carter MC, Komarow H, Radia D, Pardanani A, Sotlar K, Triggiani M, Horny HP, Arock M, Schwartz LB, Metcalfe DD. Mast cell activation syndrome: Importance of consensus criteria and call for research. J Allergy Clin Immunol 2018; 142:1008-1010. [PMID: 29928922 DOI: 10.1016/j.jaci.2018.06.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2018] [Revised: 05/25/2018] [Accepted: 06/07/2018] [Indexed: 12/18/2022]
Affiliation(s)
- Peter Valent
- Department of Internal Medicine I, Division of Haematology, Medical University of Vienna, Vienna, Austria.
| | - Cem Akin
- Division of Allergy and Clinical Immunology, University of Michigan, Ann Arbor, Mich
| | | | - Karin Hartmann
- Department of Dermatology, University of Luebeck, Luebeck, Germany
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre Odense University Hospital, Odense, Denmark
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
| | | | - Andreas Reiter
- III Medizinische Klinik, Universitäts-Medizin Mannheim, Universität Heidelberg, Mannheim, Germany
| | - Jason Gotlib
- Stanford Cancer Institute/Stanford University School of Medicine, Stanford, Calif
| | - Mariana Castells
- Division of Allergy and Immunology, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass
| | - Joshua D Milner
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh Komarow
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Deepti Radia
- Department of Haematology, Guys and St Thomas' NHS Foundation Trust, Guys Hospital, London, United Kingdom
| | | | - Karl Sotlar
- Institute of Pathology, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology University of Salerno, Salerno, Italy
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-Universität, Munich, Germany
| | - Michel Arock
- LBPA CNRS UMR8113, Ecole Normale Supérieure de Cachan, Cachan, France
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy & Immunology, Virginia Commonwealth University, Richmond, Va
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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38
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Tobío A, Hanjra P, Bandara G, Komarow HD, Carter MC, Cantave D, Metcalfe DD, Olivera A. The D816V-KIT Mutation Causes IL-6 Upregulation In Human Mast Cells. J Allergy Clin Immunol 2018. [DOI: 10.1016/j.jaci.2017.12.932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Carter MC, Desai A, Komarow HD, Bai Y, Clayton ST, Clark AS, Ruiz-Esteves KN, Long LM, Cantave D, Wilson TM, Scott LM, Simakova O, Jung MY, Hahn J, Maric I, Metcalfe DD. A distinct biomolecular profile identifies monoclonal mast cell disorders in patients with idiopathic anaphylaxis. J Allergy Clin Immunol 2017. [PMID: 28629749 DOI: 10.1016/j.jaci.2017.05.036] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Clonal mast cell disorders are known to occur in a subset of patients with systemic reactions to Hymenoptera stings. This observation has prompted the question of whether clonal mast cell disorders also occur in patients with idiopathic anaphylaxis (IA). OBJECTIVE We sought to determine the prevalence of clonal mast cell disorders among patients with IA, criteria to identify those patients who require a bone marrow biopsy, and whether the pathogenesis of IA involves a hyperresponsive mast cell compartment. METHODS We prospectively enrolled patients with IA (≥3 episodes/y) who then underwent a medical evaluation that included a serum tryptase determination, allele-specific quantitative PCR (ASqPCR) for the KIT D816V mutation, and a bone marrow examination. Mast cells were cultured from peripheral blood CD34+ cells and examined for releasability after FcεRI aggregation. RESULTS Clonal mast cell disease was diagnosed in 14% of patients referred with IA. ASqPCR for the KIT D816V mutation was a useful adjunct in helping identify those with systemic mastocytosis but not monoclonal mast cell activation syndrome. A modified overall clonal prediction model was developed by using clinical findings, a serum tryptase determination, and ASqPCR. There was no evidence of a hyperresponsive mast cell phenotype in patients with IA. CONCLUSION Patients with clonal mast cell disease can present as having IA. Distinct clinical and laboratory features can be used to select those patients more likely to have an underlying clonal mast cell disorder (monoclonal mast cell activation syndrome or systemic mastocytosis) and thus candidates for a bone marrow biopsy.
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Affiliation(s)
- Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Avanti Desai
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh D Komarow
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Yun Bai
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Sarah T Clayton
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Alicia S Clark
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Karina N Ruiz-Esteves
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Lauren M Long
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Daly Cantave
- Department of Nursing, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Todd M Wilson
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Linda M Scott
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Olga Simakova
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md; Office of Blood Research and Review, Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, Md
| | - Mi-Yeon Jung
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Jamie Hahn
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Irina Maric
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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40
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Lyons J, Chovanec J, Liu Y, Quang T. Le, Bai Y, Hsu AP, Komarow HD, Carter MC, Schwartz LB, Metcalfe DD, Milner JD. TPSAB1 Genotype and Effects of Pro-Tryptases on Human Mast Cell-Associated Disorders. J Allergy Clin Immunol 2017. [DOI: 10.1016/j.jaci.2016.12.900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Morris MA, Carter MC, Brown H, Hancock N, Scott E, Endersby D, Alwan N, Cade JE. Is blood glucose control in women with gestational diabetes associated with fruit and veg intake? Eur J Public Health 2016. [DOI: 10.1093/eurpub/ckw167.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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42
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Kim D, Beaven MA, Kulinski J, Desai A, Cruse G, Prussin C, Komarow HD, Carter MC, Metcalfe DD, Olivera A. Constitutive KIT Activity and IL-6 Production in Mast Cells Alters Levels of Reactive Oxygen Species (ROS) and the Scavenger Protein DJ-1 in Mastocytosis. J Allergy Clin Immunol 2016. [DOI: 10.1016/j.jaci.2015.12.1168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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43
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Hartmann K, Escribano L, Grattan C, Brockow K, Carter MC, Alvarez-Twose I, Matito A, Broesby-Olsen S, Siebenhaar F, Lange M, Niedoszytko M, Castells M, Oude Elberink JNG, Bonadonna P, Zanotti R, Hornick JL, Torrelo A, Grabbe J, Rabenhorst A, Nedoszytko B, Butterfield JH, Gotlib J, Reiter A, Radia D, Hermine O, Sotlar K, George TI, Kristensen TK, Kluin-Nelemans HC, Yavuz S, Hägglund H, Sperr WR, Schwartz LB, Triggiani M, Maurer M, Nilsson G, Horny HP, Arock M, Orfao A, Metcalfe DD, Akin C, Valent P. Cutaneous manifestations in patients with mastocytosis: Consensus report of the European Competence Network on Mastocytosis; the American Academy of Allergy, Asthma & Immunology; and the European Academy of Allergology and Clinical Immunology. J Allergy Clin Immunol 2015; 137:35-45. [PMID: 26476479 DOI: 10.1016/j.jaci.2015.08.034] [Citation(s) in RCA: 215] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Revised: 07/27/2015] [Accepted: 08/06/2015] [Indexed: 01/03/2023]
Abstract
Cutaneous lesions in patients with mastocytosis are highly heterogeneous and encompass localized and disseminated forms. Although a classification and criteria for cutaneous mastocytosis (CM) have been proposed, there remains a need to better define subforms of cutaneous manifestations in patients with mastocytosis. To address this unmet need, an international task force involving experts from different organizations (including the European Competence Network on Mastocytosis; the American Academy of Allergy, Asthma & Immunology; and the European Academy of Allergology and Clinical Immunology) met several times between 2010 and 2014 to discuss the classification and criteria for diagnosis of cutaneous manifestations in patients with mastocytosis. This article provides the major outcomes of these meetings and a proposal for a revised definition and criteria. In particular, we recommend that the typical maculopapular cutaneous lesions (urticaria pigmentosa) should be subdivided into 2 variants, namely a monomorphic variant with small maculopapular lesions, which is typically seen in adult patients, and a polymorphic variant with larger lesions of variable size and shape, which is typically seen in pediatric patients. Clinical observations suggest that the monomorphic variant, if it develops in children, often persists into adulthood, whereas the polymorphic variant may resolve around puberty. This delineation might have important prognostic implications, and its implementation in diagnostic algorithms and future mastocytosis classifications is recommended. Refinements are also suggested for the diagnostic criteria of CM, removal of telangiectasia macularis eruptiva perstans from the current classification of CM, and removal of the adjunct solitary from the term solitary mastocytoma.
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Affiliation(s)
- Karin Hartmann
- Department of Dermatology, University of Cologne, Cologne, Germany; Department of Dermatology, University of Luebeck, Luebeck, Germany.
| | - Luis Escribano
- Servicio Central de Citometria (NUCLEUS), Centro de Investigacion del Cancer (IBMCC; CSIC/USAL) and Department of Medicine and IBSAL, University of Salamanca, Salamanca, Spain
| | - Clive Grattan
- Norfolk and Norwich University Hospital, Norwich, United Kingdom
| | - Knut Brockow
- Department of Dermatology and Allergy Biederstein, Technical University of Munich, Munich, Germany
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Ivan Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain
| | - Almudena Matito
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain
| | - Sigurd Broesby-Olsen
- Department of Dermatology and Allergy Centre, Odense University Hospital, Odense, Denmark
| | - Frank Siebenhaar
- Department of Dermatology and Allergy, Interdisciplinary Mastocytosis Center Charité, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Magdalena Lange
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Marek Niedoszytko
- Department of Allergology, Medical University of Gdansk, Gdansk, Poland
| | - Mariana Castells
- Division of Rheumatology, Immunology, and Allergy, Harvard Medical School, Brigham and Women's Hospital, Boston, Mass
| | - Joanna N G Oude Elberink
- Department of Allergology, Groningen Research Institute for Asthma and COPD, University Medical Center of Groningen, University of Groningen, Groningen, The Netherlands
| | | | - Roberta Zanotti
- Section of Hematology, Department of Medicine, Verona University Hospital, Verona, Italy
| | - Jason L Hornick
- Department of Pathology, Brigham and Women's Hospital, and Harvard Medical School, Boston, Mass
| | - Antonio Torrelo
- Department of Dermatology, Hospital del Nino Jesus, Madrid, Spain
| | - Jürgen Grabbe
- Department of Dermatology, Cantonal Hospital Aarau, Aarau, Switzerland
| | - Anja Rabenhorst
- Department of Dermatology, University of Cologne, Cologne, Germany
| | - Boguslaw Nedoszytko
- Department of Dermatology, Venereology and Allergology, Medical University of Gdansk, Gdansk, Poland
| | | | - Jason Gotlib
- Division of Hematology, Department of Medicine, Stanford University School of Medicine, Stanford, Calif
| | - Andreas Reiter
- III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany
| | - Deepti Radia
- Department of Haematology, Guys and St Thomas' NHS Foundation Trust, Guys Hospital, London, United Kingdom
| | - Olivier Hermine
- Department of Hematology, National Reference Center of Mastocytosis, INSERM U1163, CNRS ERL8564, Imagine Institute, Université Paris Descartes, Sorbonne, Paris Cité, Paris, France
| | - Karl Sotlar
- Institute of Pathology, Ludwig-Maximilians-Universität, Munich, Germany
| | - Tracy I George
- Department of Pathology, University of New Mexico, Albuquerque, NM
| | | | - Hanneke C Kluin-Nelemans
- Department of Hematology, University Hospital Groningen, University of Groningen, Groningen, The Netherlands
| | - Selim Yavuz
- Department of Internal Medicine, Division of Hematology, University of Istanbul, Istanbul, Turkey
| | - Hans Hägglund
- Hematology Center Karolinska, Karolinska University Hospital, Stockholm, Sweden
| | - Wolfgang R Sperr
- Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
| | - Lawrence B Schwartz
- Department of Internal Medicine, Division of Rheumatology, Allergy & Immunology, Richmond, Va
| | - Massimo Triggiani
- Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy
| | - Marcus Maurer
- Department of Dermatology and Allergy, Interdisciplinary Mastocytosis Center Charité, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Gunnar Nilsson
- Clinical Immunology and Allergy, Department of Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Hans-Peter Horny
- Institute of Pathology, Ludwig-Maximilians-Universität, Munich, Germany
| | - Michel Arock
- Molecular Oncology and Pharmacology, LBPA CNRS UMR8113, Ecole Normale Supérieure de Cachan, Cachan, France
| | - Alberto Orfao
- Servicio Central de Citometria (NUCLEUS), Centro de Investigacion del Cancer (IBMCC; CSIC/USAL) and Department of Medicine and IBSAL, University of Salamanca, Salamanca, Spain
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Cem Akin
- Division of Rheumatology, Immunology, and Allergy, Harvard Medical School, Brigham and Women's Hospital, Boston, Mass
| | - Peter Valent
- Department of Internal Medicine I, Division of Hematology & Hemostaseology, Medical University of Vienna, Vienna, Austria
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Carter MC, Clayton ST, Komarow HD, Brittain EH, Scott LM, Cantave D, Gaskins DM, Maric I, Metcalfe DD. Assessment of clinical findings, tryptase levels, and bone marrow histopathology in the management of pediatric mastocytosis. J Allergy Clin Immunol 2015; 136:1673-1679.e3. [PMID: 26044856 DOI: 10.1016/j.jaci.2015.04.024] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/31/2015] [Accepted: 04/08/2015] [Indexed: 11/18/2022]
Abstract
BACKGROUND The management of children with pediatric mastocytosis poses a challenge. This is because there is limited information as to the application of clinical and laboratory findings and bone marrow histopathology as they relate to medical intervention and communication. OBJECTIVE We sought to examine clinical aspects of pediatric mastocytosis in relationship to serum tryptase levels and bone marrow pathology to provide practical guidance for management. METHODS Between 1986 and 2012, 105 children were evaluated at the National Institutes of Health. Organomegaly was confirmed by means of ultrasound. Baseline tryptase levels and at least 1 subsequent tryptase measurement was available in 84 and 37 of these children, respectively. Fifty-three children underwent a bone marrow examination. These data were used to examine relationships between clinical findings, tryptase levels, and marrow histopathology. RESULTS In patients with high tryptase levels and severe mediator symptoms, all with organomegaly had systemic disease, and none without organomegaly had systemic disease. Serum tryptase levels differed significantly between patients with urticaria pigmentosa and those with diffuse cutaneous (P < .0001) and systemic mastocytosis (P < .0001) and in all 3 categories versus control subjects (P < .0001). Tryptase levels and symptoms decreased over time in most patients, and tryptase levels correlated with bone marrow mast cell burden in patients with systemic mastocytosis (P < .0001). There was a significant relationship between clinical resolution and the percentage decrease in tryptase levels (P = .0014). CONCLUSIONS The majority of children experienced major or complete disease resolution (57%), whereas the remainder exhibited partial improvement. Organomegaly was a strong indicator of systemic disease. Serum tryptase levels furthered classification and reflected clinicopathologic findings, while sequential tryptase measurements were useful in supplementing clinical judgment as to disease course.
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Affiliation(s)
- Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
| | - Sarah T Clayton
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh D Komarow
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Erica H Brittain
- Biostatistics Research Branch, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Linda M Scott
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Daly Cantave
- Department of Nursing, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Donna M Gaskins
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Irina Maric
- Hematology Section, Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
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Kim D, Beaven MA, Cruse G, Prussin C, Komarow H, Carter MC, Metcalfe DD, Olivera A. Constitutively Activated KIT in Mastocytosis Patients Is Associated with Decreased Levels of the Scavenger Protein DJ1 and Reciprocal Increases in Reactive Oxygen Species. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Carter MC, Metcalfe DD, Clark AS, Wayne AS, Maric I. Abnormal bone marrow histopathology in paediatric mastocytosis. Br J Haematol 2014; 168:865-73. [DOI: 10.1111/bjh.13231] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Accepted: 10/19/2014] [Indexed: 12/24/2022]
Affiliation(s)
- Melody C. Carter
- National Institute of Allergy and Infectious Diseases; Laboratory of Allergic Diseases; National Institutes of Health (NIH); Bethesda MD USA
| | - Dean D. Metcalfe
- National Institute of Allergy and Infectious Diseases; Laboratory of Allergic Diseases; National Institutes of Health (NIH); Bethesda MD USA
| | - Alicia S. Clark
- National Institute of Allergy and Infectious Diseases; Laboratory of Allergic Diseases; National Institutes of Health (NIH); Bethesda MD USA
| | - Alan S. Wayne
- Pediatric Oncology Branch; Center for Cancer Research; National Cancer Institute; NIH; Bethesda MD USA
- Children's Center for Cancer and Blood Diseases; Division of Hematology; Oncology and Blood and Marrow Transplantation; Children's Hospital Los Angeles; Keck School of Medicine; University of Southern California; Los Angeles CA USA
| | - Irina Maric
- Hematology Section; Department of Laboratory Medicine; Clinical Center; NIH; Bethesda MD USA
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Williams KW, Metcalfe DD, Prussin C, Carter MC, Komarow HD. Telangiectasia macularis eruptiva perstans or highly vascularized urticaria pigmentosa? J Allergy Clin Immunol Pract 2014; 2:813-5. [PMID: 25439382 DOI: 10.1016/j.jaip.2014.07.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Revised: 06/27/2014] [Accepted: 07/01/2014] [Indexed: 01/08/2023]
Affiliation(s)
- Kelli W Williams
- Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Calman Prussin
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Hirsh D Komarow
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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Chan EC, Bai Y, Kirshenbaum AS, Fischer ER, Simakova O, Bandara G, Scott LM, Wisch LB, Cantave D, Carter MC, Lewis JC, Noel P, Maric I, Gilfillan AM, Metcalfe DD, Wilson TM. Mastocytosis associated with a rare germline KIT K509I mutation displays a well-differentiated mast cell phenotype. J Allergy Clin Immunol 2014; 134:178-87. [PMID: 24582309 DOI: 10.1016/j.jaci.2013.12.1090] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 11/27/2013] [Accepted: 12/17/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Mastocytosis associated with germline KIT activating mutations is exceedingly rare. We report the unique clinicopathologic features of a patient with systemic mastocytosis caused by a de novo germline KIT K509I mutation. OBJECTIVES We sought to investigate the effect of the germline KIT K509I mutation on human mast cell development and function. METHODS Primary human mast cells derived from CD34(+) peripheral blood progenitors were examined for growth, development, survival, and IgE-mediated activation. In addition, a mast cell transduction system that stably expressed the KIT K509I mutation was established. RESULTS KIT K509I biopsied mast cells were round, CD25(-), and well differentiated. KIT K509I progenitors cultured in stem cell factor (SCF) demonstrated a 10-fold expansion compared with progenitors from healthy subjects and developed into mature hypergranular mast cells with enhanced antigen-mediated degranulation. KIT K509I progenitors cultured in the absence of SCF survived but lacked expansion and developed into hypogranular mast cells. A KIT K509I mast cell transduction system revealed SCF-independent survival to be reliant on the preferential splicing of KIT at the adjacent exonic junction. CONCLUSION Germline KIT mutations associated with mastocytosis drive a well-differentiated mast cell phenotype distinct to that of somatic KIT D816V disease, the oncogenic potential of which might be influenced by SCF and selective KIT splicing.
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Affiliation(s)
- Eunice Ching Chan
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Yun Bai
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Arnold S Kirshenbaum
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Elizabeth R Fischer
- Research Technologies Section, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Mont
| | - Olga Simakova
- Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Geethani Bandara
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Linda M Scott
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Laura B Wisch
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Daly Cantave
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Melody C Carter
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - John C Lewis
- Division of Allergy, Asthma & Clinical Immunology, Mayo Clinic, Scottsdale, Ariz
| | - Pierre Noel
- Division of Hematology/Oncology, Mayo Clinic, Scottsdale, Ariz
| | - Irina Maric
- Department of Laboratory Medicine, Clinical Center, National Institutes of Health, Bethesda, Md
| | - Alasdair M Gilfillan
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Dean D Metcalfe
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md
| | - Todd M Wilson
- Mast Cell Biology Section, Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Md.
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Abstract
Mastocytosis is a disorder of abnormal mast cell proliferation, with clinical features that include flushing, pruritus, abdominal pain, diarrhea, hypotension, syncope, and musculoskeletal pain. These features are the result of mast cell mediator release and infiltration into target organs. Patients of all ages may be affected, although in children, manifestations primarily involve the skin. Most patients with systemic disease have a somatically acquired activating mutation in the KIT oncogene. This article discusses the causes and pathogenesis of mastocytosis, with an overview of the clinical features and the approach to diagnosis, evaluation, and therapy in adults and pediatric patients.
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Affiliation(s)
- Melody C Carter
- Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, 10 Center Drive, Bethesda, MD 20892, USA
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