Treating to target with etanercept in rheumatoid arthritis: Cost-effectiveness of dose reductions when remission is achieved

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Background Current management of rheumatoid arthritis (RA) focuses on inducing remission as early as possible to avoid lasting joint damage, and maintenance of remission has become important. A 12-month clinical trial in 834 patients with moderate RA investigated whether etanercept 50 mg/wk could be reduced to half dose or discontinued in patients who achieved low disease activity after 36 weeks. Objective The objective of this study was to estimate the cost-effectiveness of the three maintenance strategies. Methods A Markov model integrated the three strategies from the clinical trial and extrapolated to 10 years using data from the Swedish RA registry. Assumed treatment strategies after the trial were similar in all three arms, with patients failing to maintain remission on half-dose etanercept or methotrexate alone switching to the full dose of etanercept and patients maintaining remission on full-dose etanercept allowed switching to half dose. Resource use and utilities were taken from an observational study. Results are presented as cost/quality-adjusted life-year (QALY) (both discounted 3%) in the societal perspective. Results The cost/QALY gained with half-dose etanercept versus methotrexate ranged from €14,000 to €29,000: Longer simulations result in a higher cost/QALY, as the acquisition cost of etanercept increases. Half-dose etanercept technically dominates the full dose (lower costs [€-3000 to 6300] and similar effectiveness [0.007-0.011]). Conclusions Although ultimately all three strategies explored achieve a similar outcome as all three continuously manage patients to maintain remission, it appears that a dose reduction is the most advantageous strategy in patients with moderate disease activity. © 2014 International Society for Pharmacoeconomics and Outcomes Research (ISPOR).




Kobelt, G. (2014). Treating to target with etanercept in rheumatoid arthritis: Cost-effectiveness of dose reductions when remission is achieved. Value in Health, 17(5), 537–544.

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