Volume 75, Issue 8 pp. 1927-1938
ORIGINAL ARTICLE

Clinical features and survival of patients with indolent systemic mastocytosis defined by the updated WHO classification

Jakub Trizuljak

Jakub Trizuljak

Department of Hematology and Oncology, University Hospital, CEITEC Masaryk University, Brno, Czech Republic

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Wolfgang R. Sperr

Wolfgang R. Sperr

Department of Internal Medicine I, Division of Hematology and Hemostaseology, Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria

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Lucie Nekvindová

Lucie Nekvindová

Institute of Biostatistics and Analyses, Ltd., Spinoff Company of Masaryk University, Brno, Czech Republic

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Hanneke O. Elberink

Hanneke O. Elberink

Department of Allergology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

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Karoline V. Gleixner

Karoline V. Gleixner

Department of Internal Medicine I, Division of Hematology and Hemostaseology, Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria

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Aleksandra Gorska

Aleksandra Gorska

Department of Allergology, Medical University of Gdańsk, Gdańsk, Poland

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Magdalena Lange

Magdalena Lange

Department of Dermatology, Venereology and Allergology, Medical University of Gdańsk, Gdańsk, Poland

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Karin Hartmann

Karin Hartmann

Division of Allergy, Department of Dermatology, University of Basel, Basel, Switzerland

Department of Dermatology, University of Cologne, Cologne, Germany

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Anja Illerhaus

Anja Illerhaus

Department of Dermatology, University of Cologne, Cologne, Germany

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Massimiliano Bonifacio

Massimiliano Bonifacio

Department of Medicine, Section of Hematology, University of Verona, Verona, Italy

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Cecelia Perkins

Cecelia Perkins

Division of Hematology, Department of Medicine, Stanford University, School of Medicine/Stanford Cancer Institute, Stanford, CA, USA

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Chiara Elena

Chiara Elena

Division of Hematology, Fondazione IRCCS Policlinico San Matteo & University of Pavia, Pavia, Italy

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Luca Malcovati

Luca Malcovati

Division of Hematology, Fondazione IRCCS Policlinico San Matteo & University of Pavia, Pavia, Italy

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Anna B. Fortina

Anna B. Fortina

Pediatric Dermatology Unit, Department of Medicine, University of Padova, Padova, Italy

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Khalid Shoumariyeh

Khalid Shoumariyeh

Department of Hematology, Oncology and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany

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Mohamad Jawhar

Mohamad Jawhar

Hämatologie und Onkologie, III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany

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Roberta Zanotti

Roberta Zanotti

Department of Medicine, Section of Hematology, University of Verona, Verona, Italy

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Patrizia Bonadonna

Patrizia Bonadonna

Allergy Unit, Verona University Hospital, Verona, Italy

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Francesca Caroppo

Francesca Caroppo

Pediatric Dermatology Unit, Department of Medicine, University of Padova, Padova, Italy

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Alexander Zink

Alexander Zink

Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany

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Massimo Triggiani

Massimo Triggiani

Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy

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Roberta Parente

Roberta Parente

Division of Allergy and Clinical Immunology, University of Salerno, Salerno, Italy

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Nikolas von Bubnoff

Nikolas von Bubnoff

Department of Hematology, Oncology and Stem Cell Transplantation, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany

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Akif S. Yavuz

Akif S. Yavuz

Division of Hematology, Istanbul Medical School, University of Istanbul, Istanbul, Turkey

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Hans Hägglund

Hans Hägglund

Department of Medical Sciences, Uppsala University, Section of Hematology, Uppsala University Hospital, Uppsala, Sweden

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Mattias Mattsson

Mattias Mattsson

Department of Medical Sciences, Uppsala University, Section of Hematology, Uppsala University Hospital, Uppsala, Sweden

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Jens Panse

Jens Panse

Department of Oncology, Haematology, Haemostaseology and Stem Cell Transplantation, University Hospital RWTH Aachen, Aachen, Germany

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Nadja Jäkel

Nadja Jäkel

Department of Internal Medicine IV, University Hospital Halle, Halle, Germany

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Alex Kilbertus

Alex Kilbertus

Department of Dermatology and Venereology, Kepler University Hospital, Johannes Kepler University, Linz, Austria

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Olivier Hermine

Olivier Hermine

Departement of Hematology, Centre National de Référence des Mastocytoses, Imagine Institute, INSERM U1123, Université Paris Descartes, Sorbonne, Paris Cité, Hôpital Necker, Assistance Publique des Hôpitaux de Paris (APHP), Paris, France

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Michel Arock

Michel Arock

Laboratory of Hematology, Pitié-Salpêtrière Hospital, Paris, France

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David Fuchs

David Fuchs

Department of Internal Medicine 3, Hematology and Oncology, Kepler University Hospital, Johannes Kepler University, Linz, Austria

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Vito Sabato

Vito Sabato

Faculty of Medicine and Health Sciences, Department of Immunology-Allergology-Rheumatology, University of Antwerp and Antwerp University Hospital, Antwerp, Belgium

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Knut Brockow

Knut Brockow

Department of Dermatology and Allergy Biederstein, School of Medicine, Technical University of Munich, Munich, Germany

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Agnes Bretterklieber

Agnes Bretterklieber

Department of Dermatology and Venereology, Medical University of Graz, Graz, Austria

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Marek Niedoszytko

Marek Niedoszytko

Department of Allergology, Medical University of Gdańsk, Gdańsk, Poland

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Björn van Anrooij

Björn van Anrooij

Department of Allergology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

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Andreas Reiter

Andreas Reiter

Hämatologie und Onkologie, III. Medizinische Klinik, Universitätsmedizin Mannheim, Universität Heidelberg, Mannheim, Germany

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Jason Gotlib

Jason Gotlib

Division of Hematology, Department of Medicine, Stanford University, School of Medicine/Stanford Cancer Institute, Stanford, CA, USA

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Hanneke C. Kluin-Nelemans

Hanneke C. Kluin-Nelemans

Department of Hematology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands

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Jiri Mayer

Jiri Mayer

Department of Hematology and Oncology, University Hospital, CEITEC Masaryk University, Brno, Czech Republic

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Michael Doubek

Corresponding Author

Michael Doubek

Department of Hematology and Oncology, University Hospital, CEITEC Masaryk University, Brno, Czech Republic

Correspondence

Michael Doubek, University Hospital Brno and Central European Institute of Technology of Masaryk University Brno, Jihlavska 20, 62500 Brno, Czech Republic.

Email: [email protected]

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Peter Valent

Peter Valent

Department of Internal Medicine I, Division of Hematology and Hemostaseology, Ludwig Boltzmann Institute for Hematology and Oncology, Medical University of Vienna, Vienna, Austria

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First published: 28 February 2020
Citations: 59

Funding information

Supported by the project CEITEC 2020 [LQ1601] from the Ministry of Education, Youth and Sports of the Czech Republic under National Sustainability, TA CR Center of Competence project (TE02000058), MH CR – DRO (FNBr, 65269705), by Deutsche Forschungsgemeinschaft (DFG, RA 2838 to AI), by the Koeln Fortune Program, Faculty of Medicine, University of Cologne (216/2016 to AI) and by the Austrian Science Fund (FWF) grant SFB F4704-B20. Also supported by the Czech Leukemia Study Group for Life (CELL).

Abstract

Background

In indolent systemic mastocytosis (ISM), several risk factors of disease progression have been identified. Previous studies, performed with limited patient numbers, have also shown that the clinical course in ISM is stable and comparable to that of cutaneous mastocytosis (CM). The aim of this project was to compare the prognosis of patients with ISM with that of patients with CM.

Methods

We employed a dataset of 1993 patients from the registry of the European Competence Network on Mastocytosis (ECNM) to compare outcomes of ISM and CM.

Results

We found that overall survival (OS) is worse in ISM compared to CM. Moreover, in patients with typical ISM, bone marrow mastocytosis (BMM), and smoldering SM (SSM), 4.1% of disease progressions have been observed (4.9% of progressions in typical ISM group, 1.7% in BMM, and 9.4% in SSM). Progressions to advanced SM were observed in 2.9% of these patients. In contrast, six patients with CM (1.7%) converted to ISM and no definitive progression to advanced SM was found. No significant differences in OS and event-free survival (EFS) were found when comparing ISM, BMM, and SSM. Higher risk of both progression and death was significantly associated with male gender, worse performance status, and organomegaly.

Conclusion

Our data confirm the clinical impact of the WHO classification that separates ISM from CM and from other SM variants.

Graphical Abstract

Division of mastocytoses according to updated WHO Classification is clinically relevant. Overall survival is worse in indolent systemic mastocytosis compared to cutaneous mastocytosis. Trephine biopsy is necessary to distinguish indolent systemic mastocytosis from cutaneous mastocytosis.

CONFLICT OF INTEREST

WRS received honoraria from Novartis, Pfizer, AbbVie, Daiichi Sankyo, Amgen, Thermo Fisher, Diciphera, Incyte, Celgene, Jazz and travel grants from Pfizer and Roche. HOE received honoraria from ALK-Abelló, Chiesi, MEDA Pharma, Novartis, Blueprint. KVG received honoraria from Novartis, Roche, BMS, Sanofi, Incyte and travel grants from Roche and AbbVie. ML received honoraria from Novartis. KH received honoraria from Novartis, ALK, Blueprint, Deciphera and research funding from Euroimmun. MB received honoraria from Amgen, Incyte, Pfizer and research funding from Novartis. CE received honoraria from Novartis and Pfizer. MJ received honoraria from Novartis, Blueprint, Deciphera. RZ is consultant Deciphera and Novartis. AZ received honoraria or participated in trials from AbbVie, Almirall, Beiersdorf Dermo Medical, Bencard Allergie, BMS, Celgene, Eli Lilly, GSK, Janssen-Cilag, Miltenyi Biotec, Novartis, Sanofi-Aventis, Takeda Pharma. MT received honoraria from Deciphera, Blueprint, Novartis. NB received honoraria from Astra Zeneca, Amgen, Novartis and BMS and research funding from Novartis. JP received honoraria from Alexion, BMS, Boehringer Ingelheim, Grünenthal, MSD, Novartis, Pfizer, Chugai. DF received honoraria from Novartis, Pfizer, Roche travel grants from Roche. VS received honoraria from Novartis, Termofisher, Shire, Stallergens. KB received honoraria from Novartis, Phadia (Thermo Fisher), Meda, BioMarin Pharmaceutical Inc outside. BA received honoraria from Novartis. AR received honoraria from Novartis, BMS, Deciphera, Blueprint, Baxalta/Shire and research funding from Novartis. JG received honoraria from Blueprint, Deciphera, Gilead, Incyte, Novartis and research funding from Blueprint, Celgene, CTI BioPharma, Deciphera, Gilead, Incyte, Pharmacyclics, Promedior, Seattle Genetics. JM received honoraria from for Novartis, Gilead, BMS. MD received honoraria from for Roche, AbbVie, Novartis, Gilead, AOP Pharmaceuticals, Janssen-Cilag. PV has received honoraria from Novartis, Pfizer, Deciphera, Incyte, Blueprint, Celgene and research funds from Pfizer, Incyte, Celgene. JT, LN, AG, AI, CP, LM, ABF, FC, KS, RP, MN, PB, ASY, HH, MM, NJ, AK, OH, MA, AB, HCKN have nothing to disclose.

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