Autoinflammatory & rare systemic diseases

Human Monocytic Models Reveal Genotype‐Dependent Inflammatory Programs in VEXAS Syndrome

Arthritis RheumatolPublished Mechanistic study

Authors' conclusion

Our UBA1-mutant monocytic cell-line models, representing three distinct genotypes, recapitulate genotype-dependent inflammatory phenotypes that can be modulated by RIPK3 inhibition

Study context

Population
Patients with VEXAS syndrome and human monocytic cell lines harboring each major UBA1 mutation79 RNA sequencing (RNA-seq) samples
Participants
13 patients
Comparison
UBA1-mutant monocytic cell lines by genotype
Outcome
Genotype-dependent inflammatory programs in UBA1-mutant monocytic cell lines and RNASE1 correlation with disease activity
Methodological detailslongitudinal deep phenotyping, whole blood RNA-seq, single-cell RNA-seq, UBA1-mutant human monocytic cell lines
  • Longitudinal deep phenotyping
  • Whole blood RNA-seq
  • Single-cell RNA-seq
  • UBA1-mutant human monocytic cell lines

Main finding

As reported in the abstract

RNASE1 correlation with longitudinal disease activity (strongest among genes up-regulated in VEXAS syndrome); up-regulated in patients' monocytes

r = 0.70, false discovery rate < 0.05

Original publication

Human Monocytic Models Reveal Genotype‐Dependent Inflammatory Programs in VEXAS Syndrome. Arthritis Rheumatol. Published 7 September 2026. doi:10.1002/art.70332

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