Year: 2025
Type: article
Study design: Case Report
Abstract: IgA vasculitis is a predominantly pediatric autoimmune disease characterized by IgA deposit in small vessels. Chronic myelomonocytic leukemia (CMML) is a rare hematological malignancy classified within myelodysplastic syndromes. Here, we present a previously unrecognized case of CMML associated with IgA vasculitis. A 62-year-old woman presented with necrotic and infiltrated purpura and mild arthralgia, primarily affecting the knees and wrists, without gastrointestinal or kidney involvement. A comprehensive screening for other etiologies was unremarkable. Blood tests showed an increase of monocyte count and circulating monocyte phenotyping was consistent with CMML. Bone marrow analysis showed no blast cells or karyotypic abnormalities. Genetic testing identified an NRAS mutation. Autoantibody screening and viral serologies were negative. A skin biopsy revealed small-vessel vasculitis with IgA immune deposits. CMML can be associated with autoimmune diseases, such as polyarteritis nodosa and cutaneous leukocytoclastic vasculitis. However, this is the first report of IgA vasculitis occurring in the context of low risk CMML.
Source: BMC Rheumatology
Authors: Bénédicte Rouvière, Francois Chasset, Noémie Abisror, Pierre Hirsch, Olivier Fain, Arsène Mékinian, on behalf of MINHEMON (French network on immune diseases associated with hemopathies and cancers)
Language: English
Subfield: Pulmonary and Respiratory Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: gold
Estimated APC paid: $2,190
OpenAlex ID: W4409406443