Cost-Effectiveness of Empagliflozin on Top of Standard of Care for Heart Failure With Reduced Ejection Fraction in Singapore

Abstract

Objectives

The prevalence of heart failure (HF) and its risk factors are high in Singapore. The EMPEROR-Reduced trial demonstrated that add-on empagliflozin resulted in a reduction in the risk of cardiovascular death or hospitalization for HF compared with standard of care (SoC). This study aimed to estimate the cost-effectiveness of empagliflozin + SoC versus SoC in patients with HF with reduced ejection fraction from a Singaporean healthcare perspective.

Methods

A Markov cohort model simulated progression through health states based on New York Heart Association classes over a lifetime horizon using a cycle length of 1 month. Transition probabilities, and the risk of transient events (hospitalization for HF and cardiovascular/all-cause death) were modeled based on the EMPEROR-Reduced trial. Costs for HF-related events, adverse events, and for monitoring were estimated from a combination of published literature and publicly available fees for public hospitals/polyclinics.

Results

Empagliflozin + SoC was estimated to be very cost-effective versus SoC alone with an incremental cost-effectiveness ratio of 8000 Singapore Dollars/quality-adjusted life-year gained. The base-case results were robust as evidenced from the consistency of various scenario and sensitivity analyses performed. When using Kansas City Cardiomyopathy Questionnaire - Clinical Summary Score quartiles as the health states, the incremental cost-effectiveness ratio reduced significantly to 4625 Singapore Dollars/quality-adjusted life-year.

Conclusion

The use of empagliflozin on top of SoC represents a highly cost-effective solution for the treatment of patients with HF with reduced ejection fraction in Singapore when considering its efficacy, relative affordability, and the growing economic burden of HF in Singapore.

Authors

Lijoy Varghese Weiqin Lin Stephan Linden Ai Ling Lum David Sim

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