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Improvements in Remission or LDA with Ongoing Sarilumab Treatment in Patients with RA

VBCR - December 2017, Vol 6, No 5 - ACR 2017 Conference Correspondent, Rheumatoid Arthritis

In the phase 3 MOBILITY and TARGET studies, subcutaneous sar­ilumab (150 mg or 200 mg every 2 weeks [q2w]) plus background conventional synthetic disease-modifying antirheumatic drugs (csDMARDs) demonstrated efficacy and safety in patients with active rheumatoid arthritis (RA) who have an inadequate response to methotrexate (MTX) or inadequate response to, or intolerance of, tumor necrosis factor inhibitors. The objective of this post hoc analysis was to assess the proportion of patients who achieved clinical remission or low disease activity (LDA) by week 24 (TARGET) and week 52 (MOBILITY).

In both trials, patients were randomized 1:1:1 to receive sarilumab 150 mg or 200 mg q2w or placebo + MTX (MOBILITY) or csDMARDs (TARGET). Clinical remission and LDA were assessed using Disease Activity Score 28–C-reactive protein (DAS28-CRP; <2.4 and ≤2.9), Clinical Disease Activity Index (≤2.8 and ≤10), and Simplified Disease Activity Index (≤3.3 and ≤11) at weeks 4, 8, 12, and 24 (TARGET) and week 52 (MOBILITY), and functional remission using the Health Assessment Questionnaire Disability Index (HAQ-DI; <0.5).

In both trials, a higher proportion of patients treated with sarilumab achieved remission (DAS28-CRP) and LDA (all criteria) compared with placebo. In most patient groups, remission and LDA were achieved early, between weeks 4 and 8. Notably, continued sarilumab treatment (both doses) resulted in additional patients achieving remission and LDA at subsequent time points through week 24, with additional patients achieving remission between weeks 24 and 52 (MOBILITY). In both sarilumab-treated groups in MOBILITY, normalization of physical function by HAQ-DI <0.5 was apparent by week 12 (nominal P <.05 vs placebo, both doses).

This analysis of the MOBILITY and TARGET studies showed that patients treated with sarilumab achieved responses as early as week 4, and that ongoing sarilumab treatment resulted in achievement of remission or LDA through week 24, with additional increases seen through week 52 (MOBILITY).

Source: Genovese MC, Mangan EK, Fay J, et al. Improvements in remission and low disease activity are achieved with ongoing sarilumab treatment, in patients with rheumatoid arthritis in 2 phase 3 studies. Arthritis Rheumatol. 2017;69(suppl 10). Abstract 2480.

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Last modified: January 15, 2018
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