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Biochemical markers predictive for bone marrow involvement in systemic mastocytosis
Marjolein L Donker1, Jasper J van Doormaal, Frederiek F van Doormaal
1Department of Internal Medicine Hematology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
Haematologica
|January 2, 2008
Summary
Biochemical markers like serum tryptase can accurately predict bone marrow involvement in indolent systemic mastocytosis, potentially reducing the need for invasive bone marrow biopsies.
Area of Science:
- Hematology
- Oncology
- Biochemistry
Background:
- Systemic mastocytosis (SM) diagnosis often requires bone marrow biopsy.
- Non-invasive diagnostic methods are needed to assess bone marrow involvement in SM.
Purpose of the Study:
- To evaluate the efficacy of biochemical markers in predicting bone marrow involvement in indolent systemic mastocytosis (ISM).
Main Methods:
- Assessed serum tryptase, urinary N(-) methylhistamine, and N(-) methylimidazole acetic acid levels.
- Included 115 patients with suspected ISM and 15 healthy controls.
- Excluded patients with aggressive mastocytosis or other hematologic disorders.
Main Results:
- Serum tryptase showed 96% accuracy.
- Urinary N(-) methylhistamine demonstrated 88% accuracy.
- N(-) methylimidazole acetic acid achieved 95% accuracy in predicting bone marrow involvement.
Conclusions:
- Biochemical markers are highly accurate in predicting bone marrow involvement in ISM.
- These markers offer a valuable non-invasive tool for pre-test probability assessment.
- May help reduce the necessity for bone marrow biopsies in diagnosing ISM.
