Distinct by Design: Unraveling the Unique Clinical and Transcriptomic Identity of Juvenile Scleromyositis Overlap Compared to Juvenile Systemic Sclerosis and Juvenile Dermatomyositis: Implications for Care and Pathogenesis.

Patients with jOverlap exhibited a distinct immunophenotype and clinical profile compared to patients with jSSc and JDM. Their broad transcriptional heterogeneity suggests disease category alone does not explain gene expression patterns. Further analysis correlating DEGs with autoantibodies, age, and clinical features is warranted to better define this overlapping disease entity.