Extra-renal disease patterns in lupus nephritis: clinical and serological activity confers increased risk of renal flares and damage accrual.
OBJECTIVE To explore patterns of extra-renal disease activity following renal response in lupus nephritis (LN) and evaluate their association with renal flares and organ damage accrual. METHODS Multicenter retrospective cohort study of patients with biopsy-proven LN who achieved renal response. Latent class analysis...