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An idiopathic inflammatory myopathy of childhood resulting in muscle weakness.
2 clinical trials registered, 2 recruiting. Interventions under study include other interventions and biologic therapy. Pipeline includes 1 PHASE2. Research is sponsored by a mix of industry and academic institutions.
8 publications have been identified in PubMed for juvenile polymyositis. Research spans Epidemiology / Natural History (75%) and Case Report / Case Series (25%).
Vignesh P (2026). [PMID: 41887030](https://pubmed.ncbi.nlm.nih.gov/41887030/). *Seminars in arthritis and rheumatism*. [Epidemiology / Natural History]
Ashe B (2026). [PMID: 42148098](https://pubmed.ncbi.nlm.nih.gov/42148098/). *Front Immunol*. [Case Report / Case Series]
Barnes DM (2026). [PMID: 41264141](https://pubmed.ncbi.nlm.nih.gov/41264141/). *Clinical rheumatology*. [Epidemiology / Natural History]
Barnes DM (2025). [PMID: 40875130](https://pubmed.ncbi.nlm.nih.gov/40875130/). *Clinical rheumatology*. [Epidemiology / Natural History]
Lin CH (2025). [PMID: 40361165](https://pubmed.ncbi.nlm.nih.gov/40361165/). *Italian journal of pediatrics*. [Epidemiology / Natural History]
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 1:59 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Tsuji H (2025). [PMID: 40368794](https://pubmed.ncbi.nlm.nih.gov/40368794/). *Internal medicine (Tokyo, Japan)*. [Epidemiology / Natural History]
Tsuji H (2024). [PMID: 39142036](https://pubmed.ncbi.nlm.nih.gov/39142036/). *Seminars in arthritis and rheumatism*. [Epidemiology / Natural History]
Condessa L (2024). [PMID: 39355458](https://pubmed.ncbi.nlm.nih.gov/39355458/). *Cureus*. [Case Report / Case Series]
AI-curated news mentioning juvenile polymyositis
Updated Jan 28, 2026
The MIHRA initiative focuses on gathering patient-rooted insights to shape research in myositis and related conditions. Sponsored by multiple organizations, including Myositis International and The Myositis Association, this project emphasizes qualitative investigations to better understand patient experiences.