Key result
Genotype-based warfarin dosing has conflicting evidence regarding clinical efficacy and cost-effectiveness, requiring further studies before wide adoption.
Why the study?
Does genotype-based warfarin dosing improve clinical efficacy and cost-effectiveness in patients requiring long-term oral anticoagulation?
Does genotype-based warfarin dosing improve clinical efficacy and cost-effectiveness in patients requiring long-term oral anticoagulation?
Current evidence for genotype-based warfarin dosing remains conflicting, and more robust studies focusing on hard clinical outcomes and cost-effectiveness are required before widespread clinical adoption.
Conflicting evidence on genotype-guided warfarin dosing warrants clinical caution; leaves open need for definitive outcome and cost trials.
PURPOSE OF REVIEW: In North America warfarin is the current standard for oral anticoagulation therapy in the treatment and/or prophylaxis of different thrombotic conditions. In daily clinical practice a significant proportion of patients on long-term warfarin therapy fail to stabilize within their target therapeutic range leading to a resultant increased risk of thromboembolism or bleeding. Various authors and agencies advocate the role of genetic testing to guide warfarin dosing. RECENT FINDINGS: Evidence regarding the clinical efficacy and cost-effectiveness of genotype-based warfarin dosing has been conflicting, although some recent studies have suggested a potential benefit in certain subgroups. SUMMARY: More evidence is needed before the wide adoption of genotype-based warfarin dosing. Future studies should be designed to address outcomes such as major bleeding or recurrent thrombosis, and allow economic evaluations.
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Gándara et al. (2010) conducted a review in thrombotic conditions. genotype-based warfarin dosing was evaluated. Genotype-based warfarin dosing has conflicting evidence regarding clinical efficacy and cost-effectiveness, requiring further studies before wide adoption.
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