Lupus & antiphospholipid syndrome

Untargeted breathomics identifies metabolic signatures of immune activity, intestinal integrity, and fatigue in systemic lupus erythematosus

Ann Rheum DisPublished Cross-sectional study

Authors' conclusion

VOC signatures reflected immunometabolic perturbations, oxidative stress, and gut barrier integrity.

Study context

Population
Patients with systemic lupus erythematosus (SLE) and matched healthy controls
Participants
30 vs 30
Exposure
SLE patients vs matched healthy controls
  • SLEn = 30
  • Healthy controlsn = 30reference
Outcome
Breath metabolome (VOCs) in SLE and associations with clinical features, incl. disease activity and fatigue
Methodological detailsmatched healthy controls, untargeted breathomics (thermal desorption GC-MS), Exhaled breath collected with ReCIVA Breath Sampler; Volatile organic compounds (VOCs) identified with high-resolution libraries and classified by confidence levels
  • Matched healthy controls
  • Untargeted breathomics (thermal desorption GC-MS)
  • Exhaled breath collected with ReCIVA Breath Sampler; VOCs identified with high-resolution libraries and classified by confidence levels

Main finding

As reported in the abstract

Breath VOCs

Detected VOCs

1433

VOCs with levels over background (breath-derived)

539

VOC clusters identified

5

Observational data: associations, not effects.

Original publication

Untargeted breathomics identifies metabolic signatures of immune activity, intestinal integrity, and fatigue in systemic lupus erythematosus. Ann Rheum Dis. Published 2 January 2026. doi:10.1016/j.ard.2025.12.005

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