Monotherapy with tocilizumab or TNF-alpha inhibitors in patients with rheumatoid arthritis: efficacy, treatment satisfaction, and persistence in routine clinical practice

Jörg Kaufmann, Eugen Feist, Anne-Eve Roske, Wolfgang A Schmidt
Clinical Rheumatology 2013, 32 (9): 1347-55
This study aims to investigate the use of biological disease-modifying antirheumatic drugs (bDMARDs) as monotherapy in patients with rheumatoid arthritis (RA) in "real world" clinical settings and to compare tumor necrosis factor (TNF) inhibitors and tocilizumab monotherapy in terms of efficacy and patient and clinician satisfaction with treatment. This study made use of a retrospective, cohort-19 based study including included data from 254 patients (TNF inhibitors n = 128; tocilizumab n = 126) managed in 30 centers throughout Germany. Efficacy of monotherapy and patient and physician overall satisfaction with treatment were assessed at baseline, 3, and 6 months of monotherapy using a range of measures including Disease Activity Score 28 joint (DAS28), swollen joint count (SJC) and tender joint count (TJC), and visual analogue scales (VAS). Between 18 and 41 % of patients treated with bDMARDs received the agent as monotherapy. Intolerance to DMARDs, contraindications for combination therapy, and comorbidities were the most common reasons for introduction of bDMARD monotherapy. Mean DAS28 (erythrocyte sedimentation rate, ESR) was significantly lower at 3 and 6 months following tocilizumab vs. TNF inhibitors (p ≤ 0.001). Joint counts improved from baseline to month 6 in both groups (SJC -5.1 vs. -3.7 and TJC -5.6 vs. -5.1, for tocilizumab and TNF inhibitors, respectively). Patient as well as physician satisfaction (VAS 100 mm scale) was significantly higher for tocilizumab vs. TNF inhibitors (75.3 vs. 66.8; p = 0.001 and 74.9 vs. 67.1, p = 0.003, respectively). Significantly more patients remained on tocilizumab monotherapy vs. TNF-inhibitor monotherapy (89.7 vs. 75.8 %; p < 0.01). Monotherapy with bDMARDs is common in routine clinical practice. Tocilizumab monotherapy appeared to be superior over TNF-inhibitor monotherapy with respect to DAS28 and drug adherence.

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