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Published on: October 14, 2016
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IgA vasculitis associated with chronic myelomonocytic leukemia
Bénédicte Rouvière1, Francois Chasset2, Noémie Abisror3
1Department of Internal Medicine and Pneumology, Brest University Hospital, Brest, France. benedicte.rouviere@chu-brest.fr.
BMC Rheumatology
|April 14, 2025
Summary
This case study highlights a rare association between IgA vasculitis and chronic myelomonocytic leukemia (CMML). The findings suggest a potential link between this autoimmune condition and low-risk CMML, expanding our understanding of CMML comorbidities.
Area of Science:
- Hematology
- Immunology
- Dermatology
Background:
- IgA vasculitis is a common autoimmune condition in children, marked by IgA deposits in small blood vessels.
- Chronic myelomonocytic leukemia (CMML) is a rare myelodysplastic syndrome characterized by elevated monocytes.
- The co-occurrence of IgA vasculitis and CMML is exceptionally rare.
Purpose of the Study:
- To report a unique case of IgA vasculitis in a patient diagnosed with CMML.
- To investigate the clinical presentation and diagnostic findings of this rare association.
- To contribute to the understanding of potential comorbidities in CMML.
Main Methods:
- Clinical case presentation and patient history.
- Laboratory investigations including complete blood count and monocyte phenotyping.
- Bone marrow analysis, genetic testing (NRAS mutation), and autoantibody screening.
- Skin biopsy for histopathological examination and immunofluorescence.
Main Results:
- A 62-year-old woman presented with purpura and arthralgia, diagnosed with IgA vasculitis.
- Blood tests confirmed elevated monocytes consistent with CMML, with no blast cells or karyotypic abnormalities in bone marrow.
- NRAS mutation was identified; skin biopsy showed IgA immune deposits characteristic of vasculitis.
- No other causes for vasculitis were identified.
Conclusions:
- This is the first reported case of IgA vasculitis associated with low-risk CMML.
- The case underscores the importance of considering hematological malignancies in adult-onset vasculitis.
- Further research is warranted to explore the pathophysiological mechanisms linking CMML and IgA vasculitis.
