Sjögren's disease & overlap diseases
Different rheumatoid factor binding patterns distinguish between Sjögren’s disease with or without associated rheumatoid arthritis (RA)
Authors' conclusion
Analysing RF binding patterns could help to distinguish SjD, SjD-RA, RA and contributes to a better understanding of the underlying immunological processes in a complex multidisorder setting.
Study context
- Population
- Patients with RA-associated Sjögren's disease (SjD), early RA or SjD
- Participants
- 14 / 28 / 152
- Exposure
- Rheumatoid factors (RF) binding patterns in SjD-RA vs early RA vs SjD
- SjD-RAn = 14
- Early RAn = 28
- SjDn = 152
- Outcome
- IgM- and IgA-RF levels against selected RF targets mapping preferential binding to specific IgG-Fc epitopes
Main finding
As reported in the abstract
IgM-RF and IgA-RF binding profiles
- IgM-RF and IgA-RF profiles of SjD-RA closely resemble those of RA and are distinctly different from those of SjD
Observational data: associations, not effects.
Further findings
- Presence and binding pattern of RF seems inherently linked to presence of anti-SSA/Ro antibodies in SjD
Original publication
Different rheumatoid factor binding patterns distinguish between Sjögren’s disease with or without associated RA. RMD Open. Published 22 June 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →