Vasculitis & polymyalgia rheumatica

Distinct gene signatures of monocytes and B cells in patients with giant cell arteritis: a longitudinal transcriptome analysis

Arthritis Res TherPublished Mechanistic study

Authors' conclusion

Gene signatures of monocyte activation and B cell inactivation were characteristic of GCA and associated with treatment response.

Study context

Population
Treatment-naive patients with giant cell arteritis (GCA), patients with TAK, and old and young healthy controls
Comparison
Treatment-naive GCA vs TAK, age-matched old healthy controls (HCs) and young HCs
Outcome
Characteristic genes for GCA and their longitudinal transition (CIBERSORT)
Methodological detailslongitudinal, whole blood transcriptome analysis, CIBERSORT
  • Longitudinal
  • Whole blood transcriptome analysis
  • CIBERSORT

Main finding

As reported in the abstract

Gene signatures characteristic of GCA

Differentially expressed genes among all patients and HCs (repeated measures ANOVA)

739

Genes characteristically upregulated in GCA vs TAK and HCs

15

Genes characteristically downregulated in GCA vs TAK and HCs

36

Further findings

Longitudinal transition under treatment · 6 weeks

Monocyte activation toward M0-like phenotypes persisted under 6 weeks of treatment
Prednisolone plus IL-6R antagonist normalized molecular profiles more efficiently than prednisolone monotherapy

Original publication

Distinct gene signatures of monocytes and B cells in patients with giant cell arteritis: a longitudinal transcriptome analysis. Arthritis Res Ther. Published 3 January 2023. doi:10.1186/s13075-022-02982-9

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