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Measuring disease activity in juvenile systemic sclerosis: a multidisciplinary consensus from the Hamburg 2024 symposium
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DOI：10.1080/1744666X.2026.2685050.png)
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Abstract
En 中文
Assessment of disease activity in juvenile systemic sclerosis (jSSc) is essential for clinical care and trial readiness, yet no validated pediatric activity measures exist. Adult systemic sclerosis activity tools, including the Scleroderma Clinical Trials Consortium Activity Index, revised CRISS, and revised EUSTAR, provide conceptual frameworks but require adaptation for developmental, physiologic, and feasibility considerations for children. At the 17th Hamburg Symposium on JSSc, an international multidisciplinary panel reviewed adult indices, evaluated corresponding variables in the jSSc Inception Cohort and the NRCOS registry, and conducted a structured Delphi process to define organ-specific indicators of clinically meaningful activity in jSSc.
Across skin, pulmonary, cardiac, vascular, musculoskeletal, gastrointestinal, renal, and global domains, the panel reached broad and often unanimous consensus on variables reflecting active, potentially reversible disease. Key endorsed measures included mRSS progression, new ILD on HRCT, ≥10% declines in FVC or DLCO, new cardiac abnormalities, active digital ulcers, synovitis, myositis, nutritional decline, and physician global assessment. Patient-reported outcomes were strongly supported across domains.
These consensus-derived indicators provide the first comprehensive pediatric-specific foundation for defining disease activity in jSSc and represent a critical step toward developing and validating a unified pediatric activity index suitable for future clinical trials.
Keywords:
Clinical trials
consensus
disease activity
disease activity index
juvenile systemic sclerosis
pediatric rheumatology
outcome measures
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