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Cost-effectiveness analysis of treatment sequences containing tofacitinib for the treatment of rheumatoid arthritis in Spain.


ABSTRACT: OBJECTIVE:To assess the cost-effectiveness of tofacitinib-containing treatment sequences versus sequences containing only standard biological therapies in patients with moderate-to-severe rheumatoid arthritis (RA) after the failure of conventional synthetic disease-modifying antirheumatic drugs (csDMARD-IR population) and in patients previously treated with methotrexate (MTX) who show an inadequate response to second-line therapy with any tumour necrosis factor inhibitor (TNFi-IR population). METHODS:A patient-level microsimulation model estimated, from the perspective of the Spanish Public NHS, lifetime costs and quality-adjusted life years (QALY) for treatment sequences starting with tofacitinib (5 mg twice daily) followed by biological therapies versus sequences of biological treatments only. Concomitant treatment with MTX was considered. Model's parameters comprised demographic and clinical inputs (initial Health Assessment Questionnaire [HAQ] score and clinical response to short- and long-term treatment). Efficacy was measured by means of HAQ score changes using mixed treatment comparisons and data from long-term extension (LTE) trials. Serious adverse events (SAEs) data were derived from the literature. Total cost estimation (€, 2018) included drug acquisition, parenteral administration, disease progression and SAE management. RESULTS:In the csDMARD-IR population, sequences starting with tofacitinib proved dominant options (more QALYs and lower costs) versus the corresponding sequences without tofacitinib. In the TNFi-IR population, first-line treatment with tofacitinib+MTX followed by scAbatacept+MTX?rituximab+MTX?certolizumab+MTX proved dominant versus scTocilizumab+MTX?scAbatacept+MTX?rituximab+MTX?certolizumab+MTX; and tofacitinib+MTX?scTocilizumab+MTX?scAbatacept+MTX?rituximab+MTX versus scTocilizumab+MTX?scAbatacept+MTX?rituximab+MTX?certolizumab+MTX was less effective but remained a cost-saving option. CONCLUSIONS:Inclusion of tofacitinib seems a dominant strategy in moderate-to-severe RA patients after csDMARDs failure. Tofacitinib, as initial third-line therapy, proved a cost-saving strategy (€-?337,489/QALY foregone) in moderate-to-severe TNFi-IR RA patients. Key points • Therapeutical approach in rheumatoid arthritis (RA) consisted in sequences of several therapies during patient lifetime. • Treatment sequences initiating with tofacitinib followed by biological drugs provided higher health effects in csDMARDs-IR population, compared with sequences containing only biological drugs. • In both csDMARD-IR and TNFi-IR RA populations, initiating treatment with tofacitinib was associated to lower treatment costs for the Spanish National Health System.

SUBMITTER: Navarro F 

PROVIDER: S-EPMC7497326 | BioStudies | 2020-01-01

REPOSITORIES: biostudies

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