Cost-effectiveness of sacubitril/valsartan in chronic heart-failure patients with reduced ejection fraction
Zanfina Ademi1, Alena M Pfeil2, Elizabeth Hancock3
1Institute of Pharmaceutical Medicine (ECPM), University of Basel, Switzerland, and Monash Centre of Cardiovascular Research and Education in Therapeutics, Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Australia.
Insights
Sacubitril/valsartan is a cost-effective treatment for heart failure with reduced ejection fraction (HFrEF) compared to ACE inhibitors. This therapy reduces hospitalizations and improves survival, offering value within the Swiss healthcare system.
Area of Science:
- Pharmacoeconomics
- Cardiovascular Medicine
- Health Technology Assessment
Background:
- Chronic heart failure with reduced ejection fraction (HFrEF) poses a significant burden on healthcare systems.
- Angiotensin-converting enzyme inhibitors (ACEIs) are a standard treatment, but novel therapies are being evaluated for improved outcomes and cost-effectiveness.
- Assessing the economic value of new treatments is crucial for healthcare resource allocation.
Purpose of the Study:
- To evaluate the cost-effectiveness of sacubitril/valsartan compared to ACEIs (specifically enalapril) for HFrEF patients in Switzerland.
- To determine the incremental cost-effectiveness ratio (ICER) of sacubitril/valsartan from a healthcare system perspective.
- To analyze the impact on hospitalizations, survival, and quality-adjusted life years (QALYs).
Main Methods:
- A lifelong regression-based cohort model was developed, utilizing data from the PARADIGM-HF trial.
- The model compared sacubitril/valsartan with enalapril for patients with HFrEF (NYHA Class II-IV).
- Costs and QALYs were discounted at 3%, with sensitivity analyses performed to assess robustness.
Main Results:
- Sacubitril/valsartan demonstrated a 6.0% absolute reduction in annual hospitalizations and an 8.0% decrease in lifetime hospital costs.
- The treatment is predicted to increase overall survival by 0.50 years and QALYs by 0.42.
- The base-case ICER was CHF 25,684 per QALY gained, with a 99.0% probability of cost-effectiveness at a threshold of CHF 50,000.
Conclusions:
- Sacubitril/valsartan is a cost-effective treatment option for HFrEF patients in Switzerland when compared to enalapril.
- The therapy provides significant clinical benefits, including reduced hospitalizations and improved survival, at an acceptable cost per QALY.
- These findings support the adoption of sacubitril/valsartan within the Swiss healthcare system for eligible HFrEF patients.
Aims:
We aimed to assess the cost effectiveness of sacubitril/valsartan compared to angiotensin-converting enzyme inhibitors (ACEIs) for the treatment of individuals with chronic heart failure and reduced-ejection fraction (HFrEF) from the perspective of the Swiss health care system.
Methods:
The cost-effectiveness analysis was implemented as a lifelong regression-based cohort model. We compared sacubitril/valsartan with enalapril in chronic heart failure patients with HFrEF and New York-Heart Association Functional Classification II-IV symptoms. Regression models based on the randomised clinical phase III PARADIGM-HF trials were used to predict events (all-cause mortality, hospitalisations, adverse events and quality of life) for each treatment strategy modelled over the lifetime horizon, with adjustments for patient characteristics. Unit costs were obtained from Swiss public sources for the year 2014, and costs and effects were discounted by 3%. The main outcome of interest was the incremental cost-effectiveness ratio (ICER), expressed as cost per quality-adjusted life years (QALYs) gained. Deterministic sensitivity analysis (DSA) and scenario and probabilistic sensitivity analysis (PSA) were performed.
Results:
In the base-case analysis, the sacubitril/valsartan strategy showed a decrease in the number of hospitalisations (6.0% per year absolute reduction) and lifetime hospital costs by 8.0% (discounted) when compared with enalapril. Sacubitril/valsartan was predicted to improve overall and quality-adjusted survival by 0.50 years and 0.42 QALYs, respectively. Additional net-total costs were CHF 10 926. This led to an ICER of CHF 25 684. In PSA, the probability of sacubitril/valsartan being cost-effective at thresholds of CHF 50 000 was 99.0%.
Conclusion:
The treatment of HFrEF patients with sacubitril/valsartan versus enalapril is cost effective, if a willingness-to-pay threshold of CHF 50 000 per QALY gained ratio is assumed.
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