Fingolimod reduces direct medical costs compared to natalizumab in patients with relapsing–remitting multiple sclerosis in The Netherlands

Abstract

Objective:

To assess the costs of oral treatment with Gilenya® (fingolimod) compared to intravenous infusion of Tysabri® (natalizumab) in patients with relapsing–remitting multiple sclerosis (RRMS) in The Netherlands.

Methods:

A cost-minimization analysis was used to compare both treatments. The following cost categories were distinguished: drug acquisition costs, administration costs, and monitoring costs. Costs were discounted at 4%, and incremental model results were presented over a 1, 2, 5, and 10 year time horizon. The robustness of the results was determined by means of a number of deterministic univariate sensitivity analyses. Additionally, a break-even analysis was carried out to determine at which natalizumab infusion costs a cost-neutral outcome would be obtained.

Results:

Comparing fingolimod to natalizumab, the model predicted discounted incremental costs of ?€2966 (95% CI: ?€4209; ?€1801), ?€6240 (95% CI: ?€8800; ?€3879), ?€15,328 (95% CI: ?€21,539; ?€9692), and ?€28,287 (95% CI: ?€39,661; ?€17,955) over a 1, 2, 5, and 10-year time horizon, respectively. These predictions were most sensitive to changes in the costs of natalizumab infusion. Changing these costs of €255 within a range from €165–364 per infusion resulted in cost savings varying from €4031 to €8923 after 2 years. The additional break-even analysis showed that infusion costs—including aseptic preparation of the natalizumab solution—needed to be as low as the respective costs of €94 and €80 to obtain a cost neutral result after 2 and 10 years.

Limitations:

Neither treatment discontinuation and subsequent re-initiation nor patient compliance were taken into account. As a consequence of the applied cost-minimization technique, only direct medical costs were included.

Conclusion:

The present analysis showed that treatment with fingolimod resulted in considerable cost savings compared to natalizumab: starting at €2966 in the first year, increasing to a total of €28,287 after 10 years per RRMS patient in the Netherlands.     

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