Circulatory microRNA signature distinguishing rheumatoid arthritis and psoriatic arthritis
Authors' conclusion
This study identified three key miRNAs demonstrating differential expression levels between RA and PsA, which potentially govern downstream inflammatory pathways regulating distinct disease mechanisms.
Study context
- Population
- Patients with rheumatoid arthritis (RA) or psoriatic arthritis (PsA) and healthy controls
- Participants
- 48 / 49 / 20
- Exposure
- Serum microRNAs (miRNAs) in RA vs PsA and healthy controls
- RAn = 48
- PsAn = 49
- Healthy controls (HC)n = 20reference
- Outcome
- Circulatory (serum) miRNAs distinguishing RA from PsA
Methodological detailsmultiplex serum miRNA analysis (FirePlex miRNA Immunology-V2 panel), ROC curve analysis, principal component and biplot analysis, pathway prediction (DIANA-mirPath, STRING)
- Multiplex serum miRNA analysis (FirePlex miRNA Immunology-V2 panel)
- ROC curve analysis
- Principal component and biplot analysis
- Pathway prediction (DIANA-mirPath, STRING)
Main finding
As reported in the abstract
Serum miRNA levels, RA vs PsA and HC
- High sensitivity and specificity by ROC curve analysis
- PCA and biplot: differential miRNA clustering between RA and PsA, dominant skew towards miR-29b-3p, miR-22-3p and miR-223-3p
- RA vs PsA: all P < 0.05
- RA vs HC: all P < 0.05
Observational data: associations, not effects.
Further findings
Predicted downstream target pathways (DIANA, STRING)
- Pathways incl. PI3K-AKT and FoxO signalling, associated with RA pathogenesis (angiogenesis, invasion, cell death)
Original publication
Circulatory microRNA signature distinguishing rheumatoid arthritis and psoriatic arthritis. Rheumatology (Oxford). Published 8 May 2026. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →