P137 First-line tumour necrosis factor inhibitor (TNFi) treatment is associated with high multi-criteria remission early on compared to treat-to-target in a treatment naïve RA cohort

Abstract Background/Aims In rheumatoid arthritis (RA) disease assessment, SDAI and Boolean remission criteria are known to be more stringent in comparison to DAS28-ESR. Comparing remission rates across multiple assessment indices provides a more comprehensive evaluation of disease control. In an early RA trial cohort, we aimed to investigate stringent and multi-criteria remission (MCR) rates and evaluate their proportional change in response to treatment. Methods The ‘VEDERA’ trial randomised 120 treatment-naïve, new-onset RA patients to first-line etanercept+methotrexate (ETN+MTX) or methotrexate treat-to-target (MTX-TT) with escalation to ETN+MTX if not in DAS28-ESR remission at week24. Clinical assessments were completed at baseline, weeks12/24/48 (protocolised phase) up to week96 (standard-of-care). Remission cut-points included: DAS28-ESR ≤2.6, SDAI ≤3.3 and Boolean score for individual components≤1. MCR was defined as patients who were in DAS28-ESR, SDAI and Boolean remission concurrently. Descriptive analyses were undertaken to address the above aims. Results Overall, at week12, 26%(31/120) were in SDAI and 13%(16/120) in Boolean remission. This increased to 41%(49/120) and 23%(28/120) respectively by week48. In the ETN+MTX group at week12, 30%(18/60) were in SDAI and 17%(10/60) in Boolean remission. This increased to 43% (26/60) and 32%(19/60) respectively by week48. Stringent remission rates were lower in MTX-TT compared to ETN+MTX and significantly different for Boolean at week48 (15% vs 32%, odds ratio 2.6, 95% confidence interval 1.1 to 6.5, nominal p < 0.05) (Table 1). Of those in remission by the three different criteria, 36%(14/39) were in MCR at week12, with a greater proportion in ETN+MTX group [42%(10/24) compared to 27%(4/15) in MTX-TT]. MCR remained unchanged up to week48 but improved with treatment by week 96 to 45%(27/60). MCR rates did not converge between the 2 treatment groups at week 96 (ETN+MTX 55%; MTX-TT 38%). Conclusion First-line ETN+MTX is associated with higher rates of stringent remission from week 12 compared to MTX-TT, with improvement gradually over time with both strategies. Significantly higher proportion of patients treated with first line ETN+MTX compared to MTX-TT achieved Boolean and MCR. Early TNFi treatment associates with more complete and better cumulative disease activity profile. Patients not meeting MCR early following treat-to-target approach should be considered for more aggressive treatment strategies. Disclosure R. Shukla: None. D. Plant: None. P. Emery: None. M.H. Buch: None.