Original Investigation

Lupuslike Manifestations in Myelodysplastic Syndromes and Chronic Myelomonocytic Leukemia

JAMA Dermatology 10.1001/jamadermatol.2025.4586

November 19, 2025 at 11:00 AM EST

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What are the clinical characteristics of lupus erythematosus (LE) associated with myelodysplastic syndromes (MDS) and chronic myelomonocytic leukemia (CMML), and is there evidence that inflammatory manifestations may be driven by clonal myeloid cells?In this cohort study of 24 patients with LE associated with MDS/CMML, patients showed a distinct phenotype compared with idiopathic LE, with limited response to standard treatment, notable improvement with clone-directed treatments, and evidence of clonal involvement in skin lesions.MDS/CMML-associated lupuslike manifestations were a distinct syndrome driven by clonal hematopoiesis, warranting early hematologic evaluation and consideration of clone-directed therapy.

Corresponding Author: Jeanne Chauffier, MD, Médecine Interne Department, Lariboisiere University Hospital, 2 Rue Ambroise Paré, 75475 Paris Cedex 10, Paris, France (jeanne.chauffier@hotmail.fr).

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