Pediatric rheumatology

Type I interferon signature as a possible new marker for stratification of patients with juvenile idiopathic arthritis

Clin Exp RheumatolPublished Cross-sectional study

Authors' conclusion

Although based on a small case series, our results may support the role of IS in better defining a subgroup of JIA subjects with stronger autoimmune features.

Study context

Population
Patients with juvenile idiopathic arthritis (JIA) (2001 ILAR criteria), excluding systemic JIA, referred to the Rheumatology Service of IRCCS Burlo Garofolo, Trieste, Italy35 F, 9 M
Participants
44 patients
Exposure
Positive interferon score (IS) vs negative IS in JIA
  • Positive ISn = 16
Outcome
Clinical correlates of increased IS
Methodological detailssingle-centre, consecutive recruitment, principal component analysis
  • Single-centre
  • Consecutive recruitment
  • Principal component analysis

Main finding

As reported in the abstract

Positive IS (≥3)
16
Increased IS correlated with ≥5 involved joints
p=0.013
Increased IS correlated with increased erythrocyte sedimentation rate (ESR)
p=0.026
Increased IS correlated with hypergammaglobulinaemia
p=0.003

Observational data: associations, not effects.

Original publication

Type I interferon signature as a possible new marker for stratification of patients with juvenile idiopathic arthritis. Clin Exp Rheumatol. Published 1 October 2022. doi:10.55563/clinexprheumatol/b37xbd

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