IS EDOXABAN MORE COST-EFFECTIVE THAN WARFARIN IN PREVENTION OF STROKE AND DEEP VEIN THROMBOSIS?

Author(s)

Wolfe R1, Chahili G2, Loh FE3
1Touro College of Pharmacy, Yorktown Heights, NY, USA, 2Touro College of Pharmacy, Flushing, NY, USA, 3Touro College of Pharmacy, New York, NY, USA

OBJECTIVES: Historically, the gold standard for prevention of stroke and deep vein thrombosis (DVT) and its associated diseases has been treatment with vitamin k antagonists (VKAs) such as warfarin. While therapy is effective, it is associated with significant ADR’s such as bleeding, which requires consistent international normalized ratio (INR) monitoring. As a result, the final cost, which includes cost of therapy plus monitoring might not be cost-effective compared to newer oral anticoagulants such as edoxaban. The objective of this study is to determine if edoxaban is cost-effective in comparison to warfarin for prevention of stroke and deep vein thrombosis.

METHODS: A systematic review was conducted using PubMed data base with MeSH terms “warfarin”, “edoxaban”, and “cost-effectiveness”. The findings were compiled into a table illustrating Quality-Adjusted Life Years (QALY,) total costs, and quality-adjusted survival as the main findings of outcome measures. The data was then compared using U.S. dollars for total costs and incremental cost-effectiveness ratio for QALY and quality-adjusted survival.

RESULTS: Edoxaban was demonstrated to be non-inferior to warfarin in the ENGAGE AF-TIMI study as well as ENSURE-AF study with an average of 1.2% vs. 1.5%, yearly event rate risk hemorrhagic stroke in patients with Afib. In addition, edoxaban was determined to be cost-effective as the total costs were $584 and $5,421 lower than warfarin in Britain and Italy respectively. Expected QALYs were higher by 0.24 and discounted quality-adjusted survival were higher by 0.597 in edoxaban. One shortcoming of this systematic review is the limited number of cost-effectiveness studies published given that edoxaban is a relatively new drug.
CONCLUSIONS: Our findings illustrate that edoxaban is not only non-inferior to warfarin in prevention of stroke and DVT, but it is also cost-effective. However, more studies need to be conducted in order to further support our hypothesis.

Conference/Value in Health Info

2018-11, ISPOR Europe 2018, Barcelona, Spain

Value in Health, Vol. 21, S3 (October 2018)

Code

PCV53

Topic

Economic Evaluation

Topic Subcategory

Cost-comparison, Effectiveness, Utility, Benefit Analysis

Disease

Cardiovascular Disorders

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