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ABSTRACT: Objective
To determine the independent impact of different definitions of remission and low disease activity (LDA) on damage accrual.Methods
Patients with ≥2 annual assessments from a longitudinal multinational inception lupus cohort were studied. Five mutually exclusive disease activity states were defined: remission off-treatment: clinical Systemic Lupus Erythematosus Disease Activity Index (cSLEDAI)-2K=0, without prednisone or immunosuppressants; remission on-treatment: cSLEDAI-2K score=0, prednisone ≤5 mg/day and/or maintenance immunosuppressants; low disease activity Toronto cohort (LDA-TC): cSLEDAI-2K score of ≤2, without prednisone or immunosuppressants; modified lupus low disease activity (mLLDAS): Systemic Lupus Erythematosus Disease Activity Index-2K score of 4 with no activity in major organ/systems, no new disease activity, prednisone ≤7.5 mg/day and/or maintenance immunosuppressants; active: all remaining visits. Only the most stringent definition was used per visit. Antimalarials were allowed in all. The proportion of time that patients were in a specific state at each visit since cohort entry was determined. Damage accrual was ascertained with the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index (SDI). Univariable and multivariable generalised estimated equation negative binomial regression models were used. Time-dependent covariates were determined at the same annual visit as the disease activity state but the SDI at the subsequent visit.Results
There were 1652 patients, 1464 (88.6%) female, mean age at diagnosis 34.2 (SD 13.4) years and mean follow-up time of 7.7 (SD 4.8) years. Being in remission off-treatment, remission on-treatment, LDA-TC and mLLDAS (per 25% increase) were each associated with a lower probability of damage accrual (remission off-treatment: incidence rate ratio (IRR)=0.75, 95% CI 0.70 to 0.81; remission on-treatment: IRR=0.68, 95% CI 0.62 to 0.75; LDA: IRR=0.79, 95% CI 0.68 to 0.92; and mLLDAS: IRR=0.76, 95% CI 0.65 to 0.89)).Conclusions
Remission on-treatment and off-treatment, LDA-TC and mLLDAS were associated with less damage accrual, even adjusting for possible confounders and effect modifiers.
SUBMITTER: Ugarte-Gil MF
PROVIDER: S-EPMC10353886 | biostudies-literature | 2022 Nov
REPOSITORIES: biostudies-literature
Ugarte-Gil Manuel Francisco MF Hanly John J Urowitz Murray M Gordon Caroline C Bae Sang-Cheol SC Romero-Diaz Juanita J Sanchez-Guerrero Jorge J Bernatsky Sasha S Clarke Ann Elaine AE Wallace Daniel J DJ Isenberg David Alan DA Rahman Anisur A Merrill Joan T JT Fortin Paul R PR Gladman Dafna D DD Bruce Ian N IN Petri Michelle M Ginzler Ellen M EM Dooley Mary Anne MA Ramsey-Goldman Rosalind R Manzi Susan S Jönsen Andreas A van Vollenhoven Ronald F RF Aranow Cynthia C Mackay Meggan M Ruiz-Irastorza Guillermo G Lim Sam S Inanc Murat M Kalunian Ken K Jacobsen Søren S Peschken Christine C Kamen Diane L DL Askanase Anca A Pons-Estel Bernardo A BA Alarcón Graciela S GS
Annals of the rheumatic diseases 20220809 11
<h4>Objective</h4>To determine the independent impact of different definitions of remission and low disease activity (LDA) on damage accrual.<h4>Methods</h4>Patients with ≥2 annual assessments from a longitudinal multinational inception lupus cohort were studied. Five mutually exclusive disease activity states were defined: remission off-treatment: clinical Systemic Lupus Erythematosus Disease Activity Index (cSLEDAI)-2K=0, without prednisone or immunosuppressants; remission on-treatment: cSLEDA ...[more]