ArticleThe Lancet. Haematology2019
International prognostic scoring system for mastocytosis (IPSM): a retrospective cohort study.
Article in The Lancet. Haematology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.
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75 citing papers in PubMed.
- Efficacy and safety of avapritinib in previously treated patients with advanced systemic mastocytosis.Blood advances · 2022Trial
- Predicting the clinical course of advanced systemic mastocytosis on treatment with avapritinib or midostaurin.Leukemia · 2026Article
- KIT mutation and AHN-associated oncogenic profiles in systemic mastocytosis with an associated hematological neoplasm.Blood advances · 2026Article
- Systemic Mastocytosis in Adults: 2026 Update on Diagnosis, Risk Stratification and Management.American journal of hematology · 2026Review
- Subtype-specific outcome after allogeneic hematopoietic cell transplantation in advanced systemic mastocytosis: a registry study of the European competence network on mastocytosis.Experimental hematology & oncology · 2026Article
- Outcomes and prognostic factors in patients with systemic mastocytosis and an associated myeloid neoplasm: an international ECNM registry study.Journal of hematology & oncology · 2026Article
- Efficacy and safety of avapritinib in advanced systemic mastocytosis: 4-year follow-up of the PATHFINDER study.Blood advances · 2026Article
- Review
- Allogeneic haematopoietic cell transplantation in advanced systemic mastocytosis in the new era: A CIBMTR study.British journal of haematology · 2025Article
- Tissue-Resident Myeloid and Histiocytic Cells in Health and Disease: Novel Emerging Concepts.American journal of hematology · 2025Review
- Correlates of organ damage in patients with advanced systemic mastocytosis enrolled in clinical trials of avapritinib.Blood neoplasia · 2025Article
- French guidelines for the management of nonadvanced mastocytosis in adults.Orphanet journal of rare diseases · 2025Article
- Systemic Mastocytosis in 910 Patients: Prognostic Contribution of the International Consensus Classification in the Context of the Mayo Alliance Prognostic System.American journal of hematology · 2025Article
- The evaluation, management, and future of indolent systemic mastocytosis.Annals of hematology · 2025Review
- Article
- [Avapritinib for systemic mastocytosis with an associated myelodysplastic/myeloproliferative neoplasm: a case report and literature review].Zhonghua xue ye xue za zhi = Zhonghua xueyexue zazhi · 2025Review
- Systemic mastocytosis: current status and challenges in 2024.Blood advances · 2025Review
- Mastocytosis.Nature reviews. Disease primers · 2025Review
- Chronic Anaphylaxis With Indolent Systemic Mastocytosis: A Case Report.Case reports in hematology · 2025Article
- Utility of tryptase genotyping in the screening, diagnosis, and management of systemic mastocytosis.Frontiers in allergy · 2025Review
15 more citing papers are in PubMed but not listed here.
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44 authors.
Funding
Abstract
backgroundThe WHO classification separates mastocytosis into distinct variants, but prognostication remains a clinical challenge. The aim of this study was to improve prognostication for patients with mastocytosis.
methodsWe analysed data of the registry of the European Competence Network on Mastocytosis including 1639 patients (age 17-90 years) diagnosed with mastocytosis according to WHO criteria between Jan 12, 1978, and March 16, 2017. Univariate and multivariate analyses with Cox regression were applied to identify prognostic variables predicting survival outcomes and to establish a prognostic score. We validated this International Prognostic Scoring System in Mastocytosis (IPSM) with data of 462 patients (age 17-79 years) from the Spanish network Red Española de Mastocitosis diagnosed between Jan 22, 1998, and Nov 2, 2017.
findingsThe prognostic value of the WHO classification was confirmed in our study (p<0·0001). For patients with non-advanced mastocytosis (n=1380), we identified age 60 years or older (HR 10·75, 95% CI 5·68-20·32) and a concentration of alkaline phosphatase 100 U/L or higher (2·91, 1·60-5·30) as additional independent prognostic variables for overall survival. The resulting scoring system divided patients with non-advanced mastocytosis into three groups: low (no risk factors), intermediate 1 (one risk factor), and intermediate 2 (two risk factors). Overall survival and progression-free survival differed significantly among these groups (p<0·0001). In patients with advanced mastocytosis (n=259), age 60 years or older (HR 2·14, 95% CI 1·42-3·22), a concentration of tryptase 125 ng/mL or higher (1·81, 1·20-2·75), a leukocyte count of 16 × 10
interpretationThe IPSM scores for patients with non-advanced and advanced mastocytosis can be used to predict survival outcomes and guide treatment decisions. However, the predictive value of the IPSM needs to be confirmed in forthcoming trials.
fundingAustrian Science Fund, Deutsche Forschungsgemeinschaft, Koeln Fortune Program, Charles and Ann Johnson Foundation, Instituto de Salud Carlos III, Fondos FEDER, Research-Foundation Flanders/Fonds Wetenschappelijk Onderzoek, Clinical Research-Fund of the University Hospitals Leuven, and Research-Foundation Flanders/Fonds Wetenschappelijk Onderzoek.
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