Session Type: ACR Concurrent Abstract Session
Session Time: 9:00AM-10:30AM
Background/Purpose: The Definitions of Remission in SLE (DORIS) group has proposed multiple definitions of remission, but these are infrequently attained and have not previously been evaluated in relation to protection from damage accrual in a prospective study. In contrast, the Lupus Low Disease Activity State (LLDAS) is potentially more attainable, and has been shown to be associated with improved patient outcomes. The objective of this study was to compare the attainability and effect of LLDAS and remission on outcomes in a prospective multicenter study.
Methods: A prospective multinational cohort study was undertaken in 13 centres between 2013-2017. Time dependent Cox proportional hazards models were used to compare LLDAS and DORIS definitions of remission in terms of impact on disease flares and damage accrual. All eight DORIS remission definitions include a clinical SLEDAI-2K of 0, and PGA (0-3) <0.5, whilst varying in allowing for serological activity, prednisolone and immunosuppressants.
Results: 1735 SLE patients (meeting ACR or SLICC criteria) were recruited, and followed for (mean ± SD) 2.2 ± 0.9 years, totalling 12,534 visits. LLDAS was achieved in 6922 visits (54.6%). In contrast, remission was achieved in 140 (1.1%) to 1952 (15.4%) visits depending on definition. LLDAS attainment at any visit was associated with significantly reduced subsequent flare (HR 0.65, 95%CI 0.56-0.76, p<0.001) and damage accrual (HR 0.55, 95%CI 0.43-0.70, p<0.001). In contrast, considering every visit, only the least stringent remission definition (allowing serology, prednisolone ≤5mg, and immunosuppression) could be demonstrated to be associated with significantly reduced subsequent damage accrual (HR 0.58, 95%CI 0.39-0.88, p 0.01). Only remission definitions including serological remission were significantly associated with reduction in subsequent flares. Using a cut off of ≥50% of observed time meeting a given definition, LLDAS resulted in a two-fold reduction in risk of flare and damage accrual (HR 0.49, 95%CI 0.42-0.58, p<0.001; HR 0.53, 95% CI 0.41-0.68, p<0.001, respectively), while only the least stringent remission definition, or the related definition excluding serology (13.6% visits), were significantly protective against damage (HR 0.59, 95% CI 0.42-0.83, p 0.003; HR 0.69, 95% CI 0.48-0.99, p 0.05, respectively). When attained for ≥50% of observed time, all but one remission definition was significantly associated with reduced flares.
Conclusion: In this first-ever prospective study, LLDAS was markedly more attainable than any remission definition, whilst still conferring significant protection against flares and damage accrual. Among the remission definitions only the least stringent could be shown to be associated with significant reduction in damage accrual, likely reflecting a low frequency of remission attainment overall, and normal serology was required for protection from subsequent flare. LLDAS is a valid treatment target for SLE which is more achievable than remission.
To cite this abstract in AMA style:Golder V, Kandane-Rathnayake R, Huq M, Louthrenoo W, Luo SF, Wu YJ, Lateef A, Sockalingam S, Morton S, Navarra SV, Zamora L, Hamijoyo L, Katsumata Y, Harigai M, Chan M, O'Neill S, Goldblatt F, Lau CS, Li ZG, Hoi AY, Nikpour M, Morand E. Prospective Comparison of Remission and Lupus Low Disease Activity State – Effect on Disease Outcomes in Systemic Lupus Erythematosus [abstract]. Arthritis Rheumatol. 2018; 70 (suppl 10). https://acrabstracts.org/abstract/prospective-comparison-of-remission-and-lupus-low-disease-activity-state-effect-on-disease-outcomes-in-systemic-lupus-erythematosus/. Accessed September 19, 2021.
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