Cost Effectiveness of Once-Weekly Semaglutide Versus Once-Weekly Dulaglutide in the Treatment of Type 2 Diabetes in Canada

Pierre Johansen, Jonas Håkan-Bloch, Aiden R Liu, Peter G Bech, Sofie Persson, Lawrence A Leiter, Pierre Johansen, Jonas Håkan-Bloch, Aiden R Liu, Peter G Bech, Sofie Persson, Lawrence A Leiter

Abstract

Objective: The aim of this study was to assess the cost effectiveness of semaglutide versus dulaglutide, as an add-on to metformin monotherapy, for the treatment of type 2 diabetes (T2D), from a Canadian societal perspective.

Methods: The Swedish Institute for Health Economics Cohort Model of T2D was used to assess the cost effectiveness of once-weekly semaglutide (0.5 or 1.0 mg) versus once-weekly dulaglutide (0.75 or 1.5 mg) over a 40-year time horizon. Using data from the SUSTAIN 7 trial, which demonstrated comparatively greater reductions in glycated hemoglobin (HbA1c), body mass index and systolic blood pressure with semaglutide, compared with dulaglutide, a deterministic base-case and scenario simulation were conducted. The robustness of the results was evaluated with probabilistic sensitivity analyses and 15 deterministic sensitivity analyses.

Results: The base-case analysis indicated that semaglutide is a dominant treatment option, compared with dulaglutide. Semaglutide was associated with lower total costs (Canadian dollars [CAN$]) versus dulaglutide for both low-dose (CAN$113,287 vs. CAN$113,690; cost-saving: CAN$403) and high-dose (CAN$112,983 vs. CAN$113,695; cost-saving: CAN$711) comparisons. Semaglutide resulted in increased quality-adjusted life-years (QALYs) and QALY gains, compared with dulaglutide, for both low-dose (11.10 vs. 11.07 QALYs; + 0.04 QALYs) and high-dose (11.12 vs. 11.07 QALYs; + 0.05 QALYs) comparisons. The probabilistic sensitivity analysis showed that for 66-73% of iterations, semaglutide was either dominant or was considered cost effective at a willingness-to-pay threshold of CAN$50,000.

Conclusions: From a Canadian societal perspective, semaglutide may be a cost-effective treatment option versus dulaglutide in patients with T2D who are inadequately controlled on metformin monotherapy.

Conflict of interest statement

Pierre Johansen, Aiden R. Liu and Peter Bech are employees of Novo Nordisk. Pierre Johansen was employed by the Swedish IHE prior to the time of this study. Jonas Håkan-Bloch was employed by Novo Nordisk at the time this study was conducted. Sofie Persson is employed by IHE, which received grant funding from Novo Nordisk. Lawrence A. Leiter received no payment or services related to this study, but has received research support from AstraZeneca, Boehringer Ingelheim, Eli Lilly, GSK, Janssen, Merck, Novo Nordisk and Sanofi, and has been on advisory panels and provided continuing medical education for AstraZeneca, Boehringer Ingelheim, Eli Lilly, Janssen, Merck, Novo Nordisk, Sanofi and Servier.

Figures

Fig. 1
Fig. 1
The IHE cohort model of T2D. CHF congestive heart failure, IHD ischemic heart disease, IHE Swedish Institute of Health Economics, MI myocardial infarction, T2D type 2 diabetes
Fig. 2
Fig. 2
Base-case progression over time in a HbA1c, b SBP, and c BMI for the low-dose comparison, and in d HbA1c, e SBP, and f BMI for the high-dose comparison. Scenario progression over time in g HbA1c, h SBP, and i BMI for the low-dose comparison, and in j HbA1c, k SBP, and l BMI for the high-dose comparison. BMI body mass index, HbA1c glycated hemoglobin, SBP systolic blood pressure
Fig. 3
Fig. 3
CEP based on incremental costs and QALYs in the base-case analysis for the a low-dose and b high-dose comparison, and in the scenario analysis for the c low-dose and d high-dose comparison. a In the semaglutide 0.5 mg vs. dulaglutide 0.75 mg comparison, at a WTP threshold of CAN$50,000, 66% of ICERs were cost effective. b In the semaglutide 1.0 mg vs. dulaglutide 1.5 mg comparison, at a WTP threshold of CAN$50,000, 73% of ICERs were cost effective. c In the semaglutide 0.5 mg vs. dulaglutide 0.75 mg comparison, at a WTP threshold of CAN$50,000, 98% of ICERs were cost effective. d In the semaglutide 1.0 mg vs. dulaglutide 1.5 mg comparison, at a WTP threshold of CAN$50,000, 98% of ICERs were cost effective. CAN$ Canadian dollars, CEP cost-effectiveness plane, ICER incremental cost-effectiveness ratio, QALY quality-adjusted life-year, WTP willingness to pay

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