Abstract P162: Comparison Of The Clinical Effect Of Empagliflozin On Glycemic And Non-glycemic Parameters In Japanese Patients With Type 2 Diabetes And Cardiovascular Disease Treated With Or Without Baseline Metformin

Abstract

Introduction: Recent treatment guidelines for type 2 diabetes (T2D) recommend sodium-glucose cotransporter 2 (SGLT2) inhibitors to be considered preferentially in patients with T2D at high cardiovascular risk or with cardiovascular disease (CVD), regardless of their diabetes status and prior use of metformin. Hypothesis: We assessed the hypothesis that the therapeutic impact of SGLT2 inhibitors on clinical parameters differs according to the use of metformin. Methods: This was a post hoc analysis of the Effect of Empagliflozin on Endothelial Function in Cardiovascular High Risk Diabetes Mellitus: Multi-Center Placebo-Controlled Double-Blind Randomized (EMBLEM) trial. All participants (n=105; women 31.4%; mean age 64.8 years) had both T2D and DVD and were randomized to either 24 weeks of empagliflozin 10mg daily or placebo. We assessed the effect of empagliflozin on changes from baseline to 24 weeks in glycemic and non-glycemic clinical parameters, according to the baseline use of metformin. Results: Overall, 53 (50.5%) patients received baseline metformin. In the 52 patients treated with empagliflozin (48.1% with baseline metformin), the change from baseline systolic blood pressure was greater in patients receiving metformin, compared to metformin-naïve patients (group difference -8.5 [95%CI -17.7 to 0.6 mmHg], p=0.066). Reduction in body mass index was significantly greater in patients receiving baseline metformin, relative to nonusers (-0.54 [95%CI -1.07 to -0.01] kg/m 2 , p=0.047). The group ratio (baseline metformin users vs. nonusers) of proportional changes in the geometric mean of high-sensitivity Troponin-I was 0.74 (95%CI 0.59 to 0.92, p=0.009). No obvious difference was observed in glycemic parameters, such as fasting plasma glucose and HbA1c, between the baseline metformin users and nonusers. Conclusions: Our findings suggest empagliflozin has a partially different impact on clinical parameters according to whether or not metformin has been used at baseline. As clinical opportunities for prescribing SGLT2 inhibitors are likely to increase, further research is needed to investigate the effect of SGLT2 inhibitors on clinical parameters taking into account the background situation of hypoglycemic agents, such as metformin.