Lupus & antiphospholipid syndrome

Risk factors analysis and risk assessment model construction of systemic lupus erythematosus patients with infection

LupusPublished Case-control study with risk prediction model development

Authors' conclusion

The new risk assessment model exhibits good predictive ability to assess co-infection risk in SLE patients.

Study context

Population
Systemic lupus erythematosus (SLE) patients with and without infection and healthy controlsvalidation: 39 infected, 20 non-infected
Participants
163 / 333 / 132
Comparison
SLE with infection vs SLE without infection vs healthy controls
  • Infectedn = 163
  • Non-infectedn = 333reference
  • Healthy controls (HCs)n = 132
Outcome
Risk assessment model predicting co-infection in SLE (predictive sensitivity and specificity)
Methodological detailsflow cytometry, logistic regression risk model, ROC analysis, random validation sample
  • Flow cytometry
  • Logistic regression risk model
  • ROC analysis
  • Random validation sample

Main finding

As reported in the abstract

Predictive performance of risk assessment model for SLE with infection

Sensitivity

77.5%

Specificity

78.3%

Observational data: associations, not effects.

Further findings

T, B, CD4+T, CD8+T and NK cell levels

Significantly decreased in infected patients vs both non-infected patients and HCs
P < 0.05

Th17 cells

Higher in non-infected patients than HCs
P < . 05
Absolute numbers lowest in infected patients among the three groups
P < 0.001

Treg cells

Significantly lower in SLE patients than HCs
P < 0.01
Fewest in infected patients among all groups
P < . 05

Original publication

Risk factors analysis and risk assessment model construction of systemic lupus erythematosus patients with infection. Lupus. Published 26 November 2022. doi:10.1177/09612033221141255

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