Lupus & antiphospholipid syndrome

Predictors of British Isles Lupus Assessment Group-based outcomes in patients with systemic lupus erythematosus: Analysis from the Systemic Lupus International Collaborating Clinics Inception Cohort

LupusPublished Prospective inception cohort study

Authors' conclusion

Baseline predictors of response in SLE can help identify patients in clinic who are less likely to respond to standard therapy.

Study context

Population
Patients with SLE in the SLICC international inception cohort
Participants
1,492 vs 924
Exposure
Inception enrolment vs Active disease
  • Inception enrolmentn = 1,492
  • Active diseasen = 924
Outcome
Predictors of BILAG-based outcomes: MCR (reduction to classic BILAG C in all domains, steroid dose ≤7.5 mg and SLEDAI ≤ 4) and Improvement (≤1B score in previously active organs; no new BILAG A/B; stable or reduced steroid dose; no increase in SLEDAI)
Follow-up
12 months
Methodological detailsprediction model development, international, univariate and multivariate logistic regression with Least Absolute Shrinkage and Selection Operator (LASSO), cross-validation in randomly split samples
  • Prediction model development
  • International
  • Univariate and multivariate logistic regression with LASSO
  • Cross-validation in randomly split samples

Main finding

As reported in the abstract

Prediction model performance for MCR (ROC AUC)
GroupROC AUC
Inception enrolment.777
Active disease.732

ROC AUC

Inception enrolment.777
Active disease.732

Observational data: associations, not effects.

Further findings

OutcomeActive disease
Prediction model performance for Improvement (ROC AUC) · 12 months
ROC AUC.574

Prediction model performance for Improvement (ROC AUC) · 12 months

Models for Improvement performed poorly

Original publication

Predictors of British Isles Lupus Assessment Group-based outcomes in patients with systemic lupus erythematosus: Analysis from the Systemic Lupus International Collaborating Clinics Inception Cohort. Lupus. Published 18 July 2023. doi:10.1177/09612033231183273

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