28-OR: How Early after Treatment Initiation Are the CV Benefits of Empagliflozin Apparent? A Post Hoc Analysis of EMPA-REG OUTCOME
Abstract
In the EMPA-REG OUTCOME trial, in patients with type 2 diabetes (T2D) with established atherosclerotic cardiovascular disease (ASCVD), empagliflozin reduced the risk of hospitalization for HF (HHF) by 35% (HR [95%CI] 0.65 [0.50-0.85]), CV death/HHF by 34% (0.66 [0.55-0.79]), and CV death by 38% (0.62 [0.49-0.77]) with an early separation of the cumulative incidence curves. We aimed to explore at what time point after randomization the benefits became apparent. Overall, 7020 patients were treated with empagliflozin 10, 25 mg or placebo. We expressed time trajectories for the effect of pooled empagliflozin doses vs. placebo on HHF, CV death/HHF and CV death based on Hazard Ratios (HRs) (95% CI), and calculated the HR on the day the effect reached significance using Cox proportional hazards models. The reduction in risk with empagliflozin vs. placebo reached significance at day 17 for HHF [0.10 [0.01, 0.87), p=0.0372], and day 27 for CV death/HHF [HR 0.28 (0.08, 0.97), p=0.0445], and sustained significant throughout follow-up (Figure). The benefit on CV death reached significance for the first time at day 59 [HR 0.28 (0.08, 0.96)]. HRs stabilized as the number of patients with events increased over time. The benefit of empagliflozin in reducing the risk of HHF, CV death/HHF and CV death emerged within weeks after treatment initiation in EMPA-REG OUTCOME. The earliest effect appears to be on HHF. Disclosure S. Verma: Advisory Panel; Self; Amgen, AstraZeneca, Bayer AG, Boehringer…
How strong is the evidence?
Evidence Hub reads this as a secondary / pooled analysis. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 7,020 participants or records.
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