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The sodium–glucose cotransporter 2 inhibitor empagliflozin reduces the risk of cardiovascular death or heart failure hospitalization in patients with chronic heart failure, but whether empagliflozin also improves clinical outcomes when initiated in patients who are hospitalized for acute heart failure is unknown. In this double-blind trial (EMPULSE; NCT04157751 ), 530 patients with a primary diagnosis of acute de novo or decompensated chronic heart failure regardless of left ventricular ejection fraction were randomly assigned to receive empagliflozin 10 mg once daily or placebo. Patients were randomized in-hospital when clinically stable (median time from hospital admission to randomization, 3 days) and were treated for up to 90 days. The primary outcome of the trial was clinical benefit, defined as a hierarchical composite of death from any cause, number of heart failure events and time to first heart failure event, or a 5 point or greater difference in change from baseline in the Kansas City Cardiomyopathy Questionnaire Total Symptom Score at 90 days, as assessed using a win ratio. More patients treated with empagliflozin had clinical benefit compared with placebo (stratified win ratio, 1.36; 95% confidence interval, 1.09–1.68; P  = 0.0054), meeting the primary endpoint. Clinical benefit was observed for both acute de novo and decompensated chronic heart failure and was observed regardless of ejection fraction or the presence or absence of diabetes. Empagliflozin was well tolerated; serious adverse events were reported in 32.3% and 43.6% of the empagliflozin- and placebo-treated patients, respectively. These findings indicate that initiation of empagliflozin in patients hospitalized for acute heart failure is well tolerated and results in significant clinical benefit in the 90 days after starting treatment. In a multinational trial, empagliflozin has clinical benefit when administered to hospitalized patients with acute heart failure, extending the reach of SGLT2 inhibitor therapy to this patient population.

To investigate the long-term efficacy and safety of empagliflozin as add-on therapy to pioglitazone with or without metformin in patients with type 2 diabetes mellitus. Of 498 patients randomized to empagliflozin 10 mg, empagliflozin 25 mg, or placebo once daily for 24 weeks in the EMPA-REG PIO™ study, 305 (61.2%) were treated in a double-blind extension trial for ≥52 weeks (total duration ≥76 weeks). Exploratory end points at week 76 included changes from baseline in glycosylated hemoglobin (HbA1c), weight, and blood pressure assessed using ANCOVA in patients who received ≥1 dose of study drug and had a baseline HbA1c measurement in the initial study. Compared with placebo, adjusted mean (95% CI) changes from baseline in HbA1c level at week 76 were −0.59% (−0.79% to −0.40%; P < 0.001) for empagliflozin 10 mg (−6.5 [−8.6 to −4.4] mmol/mol) and −0.69% (−0.88% to −0.50%; P < 0.001) for empagliflozin 25 mg (−7.5 [−9.6 to −5.4] mmol/mol). Compared with placebo, adjusted mean (95% CI) changes from baseline in weight at week 76 were −2.0 kg (−2.7 to −1.2 kg; P < 0.001) and −1.7 kg (−2.4 −1.0 kg; P < 0.001) for empagliflozin 10 mg and 25 mg, respectively. Compared with placebo, only empagliflozin 25 mg led to significant reductions in systolic blood pressure (adjusted mean [95% CI] change: −3.7 mmHg [−6.1 to −1.3 mmHg]; P = 0.003) and diastolic blood pressure (adjusted mean [95% CI] change: −2.2 mmHg [−3.7 to −0.7 mmHg]; P = 0.004). Sensitivity analyses were consistent with these results for HbA1c level, fasting plasma glucose concentration, and weight, but revealed no significant difference between empagliflozin and placebo in change from baseline in systolic or diastolic blood pressure at week 76. Confirmed hypoglycemic adverse events (glucose ≤3.9 mmol/L and/or requiring assistance) were reported in 4.2%, 1.8%, and 3.0% of patients treated with placebo, empagliflozin 10 mg, and empagliflozin 25 mg, respectively; 1 patient each taking placebo and empagliflozin 25 mg required assistance. Adverse events consistent with urinary tract infection were reported in 26.7%, 22.4%, and 22.0% of patients treated with placebo, empagliflozin 10 mg, and empagliflozin 25 mg, respectively. Adverse events consistent with genital infection were reported in 3.0%, 10.3%, and 4.2% of patients treated with placebo, empagliflozin 10 mg, and empagliflozin 25 mg, respectively. Empagliflozin 10 mg or 25 mg as add-on therapy to pioglitazone with or without metformin for 76 weeks was well tolerated and led to sustained reductions in HbA1c and weight compared with placebo in patients with type 2 diabetes. ClinicalTrials.gov identifier: NCT01210001.

The aim of this analysis was to establish the safety profile and tolerability of empagliflozin in patients with type 2 diabetes mellitus (T2DM) according to pooled data from several clinical trials. Pooled data were analyzed from patients with T2DM treated with placebo (n = 3695), empagliflozin 10 mg (n = 3806), or empagliflozin 25 mg (n = 4782) in 17 randomized, Phase I, II, and III clinical trials plus 6 extension studies. Adverse events (AEs) were assessed descriptively in patients who took ≥1 dose of the study drug. AE incidence rates per 100 patient-years were calculated to adjust for differences in drug exposure across trials. Total exposure was 3254, 3840, and 5649 patient-years in the placebo, empagliflozin 10 mg, and empagliflozin 25 mg groups, respectively. The incidence of any AEs, AEs leading to treatment discontinuation, severe AEs, and serious AEs was no higher in patients treated with empagliflozin than with placebo. Empagliflozin was not associated with an increased risk of hypoglycemia versus placebo, except in patients on background sulfonylurea and/or insulin. The incidence of events consistent with urinary tract infection was similar across treatment groups (9.4–11.3/100 patient-years); 0.4%, 0.2%, and 0.3% of patients in the placebo, empagliflozin 10 mg, and empagliflozin 25 mg groups, respectively, had urinary tract infections that required or prolonged hospitalization. The incidence of events consistent with genital infection was higher in patients treated with empagliflozin (4.7 and 5.0/100 patient-years for empagliflozin 10 and 25 mg, respectively) than placebo (1.3/100 patient-years), but only 0.1%, 0.1%, and <0.1% in the placebo, empagliflozin 10 mg, and empagliflozin 25 mg groups, respectively, had genital infections that required or prolonged hospitalization. The incidence of AEs consistent with volume depletion was similar with placebo, empagliflozin 10 mg, and empagliflozin 25 mg (1.6, 1.5, and 1.3/100 patient-years, respectively) and was higher with empagliflozin 25 mg than placebo or empagliflozin 10 mg in patients aged >75 years (4.4 vs 2.3 and 2.5/100 patient-years, respectively). The incidences of bone fractures, malignancies, decreased renal function, hepatic injury, venous thromboembolic events, and diabetic ketoacidosis were low and similar across the treatment groups. In this predefined analysis that was based on >9000 patient-years’ exposure to empagliflozin, empagliflozin 10 mg, and empagliflozin 25 mg were well tolerated in patients with T2DM.

Aims In the EMPA‐REG OUTCOME trial, empagliflozin reduced risk of death from heart failure (HF) or hospitalization for heart failure (HHF) versus placebo in patients with type 2 diabetes mellitus (T2DM) and established cardiovascular (CV) disease. We evaluated post hoc the degree to which covariates mediated the effects of empagliflozin on HHF or HF death. Methods and results A mediator had to fulfil the following criteria: (i) affected by active treatment, (ii) associated with the outcome, and finally (iii) adjustment for it results in a reduced treatment effect compared with unadjusted analysis. Potential mediators were calculated as change from baseline or updated mean and evaluated in univariable analyses as time‐dependent covariates in Cox regression of time to HHF or HF death; those with the largest mediating effects were then included in a multivariable analysis. Increases in heart rate, log urine albumin‐to‐creatinine ratio (UACR), waist circumference, and uric acid were associated with increased risk of HHF or HF death; increases in high‐density lipoprotein cholesterol, estimated glomerular filtration rate, haematocrit, haemoglobin, and albumin were associated with reduced risk of HHF or HF death. In univariable analyses, change from baseline in haematocrit, haemoglobin, albumin, uric acid, and logUACR mediated 51%, 54%, 23%, 24%, and 27% of the risk reduction with empagliflozin versus placebo, respectively. Multivariable analysis including haemoglobin, logUACR, and uric acid mediated 85% of risk reduction with similar results when updated means were evaluated. Conclusions Changes in haematocrit and haemoglobin were the most important mediators of the reduction in HHF and death from HF in patients with T2DM and established CV disease treated with empagliflozin. Albumin, uric acid, and logUACR had smaller mediating effects in this population.

ABSTRACT Background: Glucagon-like peptide-1 (GLP‑1) and glucose-dependent insulinotropic polypeptide (GIP) are hormones secreted by the enteroendocrine cells of the gut in response to the ingestion of nutrients. These incretin hormones, so called because they increase insulin secretion, are key modulators of pancreatic islet hormone secretion and, thus, glucose homeostasis. The glucoregulatory effects of incretins are the basis for new therapies currently being developed for the treatment of type 2 diabetes mellitus (T2DM). Drugs that inhibit dipeptidyl peptidase-4 (DPP‑4), a ubiquitous enzyme that rapidly inactivates both GLP-1 and GIP, increase active levels of these hormones and, in doing so, improve islet function and glycemic control in T2DM. Scope: In this review, we briefly describe (1) the role of pancreatic islet dysfunction in the onset and progression of T2DM, (2) the rationale for developing drugs that enhance incretin activity, (3) the evidence that inhibition of DPP‑4 is effective in ameliorating islet dysfunction and improving glycemic control in T2DM, (4) the efficacy, safety, and tolerability of DPP‑4 inhibitors as monotherapy and in combination with other antidiabetic agents, and (5) the potential utility of DPP‑4 inhibitors relative to existing oral antidiabetic agents and newer antidiabetic drugs in the pipeline. The review is based upon MEDLINE literature searches (1966–August 2006) and abstracts and presentations from the American Diabetes Association Scientific Sessions (2002–2006) and the European Association for the Study of Diabetes Annual Meetings (1998–2006). Basic science, preclinical, and clinical studies and review articles published in the English language were evaluated and selected based upon consideration of their originality, relevance, and frequency of citation. Findings: DPP‑4 inhibitors are a new class of antidiabetogenic drugs that provide comparable efficacy to current treatments. They are effective as monotherapy in patients inadequately controlled with diet and exercise and as add-on therapy in combination with metformin, thiazolidinediones, and insulin. The DPP‑4 inhibitors are well tolerated, carry a low risk of producing hypoglycemia, and are weight-neutral. The long-term durability of effect on glycemic control and β‑cell morphology and function remain to be established. Conclusions: Islet cell dysfunction is central to the pathogenesis of T2DM. Incretin-based therapies, including GLP-1 analogues and DPP‑4 inhibitors, have been shown to restore glucose homeostasis and improve glycemic control. The DPP‑4 inhibitors, which can be used as monotherapy or in combination with other antidiabetic drugs, are a promising new treatment option, especially for patients with early-stage T2DM and more severe hyperglycemia.

Empagliflozin is a potent, oral, selective inhibitor of sodium glucose cotransporter 2 in development for the treatment of type 2 diabetes mellitus. The goal of these studies was to investigate potential drug–drug interactions between empagliflozin and gemfibrozil (an organic anion-transporting polypeptide 1B1 [OATP1B1]/1B3 and organic anion transporter 3 [OAT3] inhibitor), rifampicin (an OATP1B1/1B3 inhibitor), or probenecid (an OAT3 and uridine diphosphate glucuronosyltransferase inhibitor). Two open-label, randomized, crossover studies were undertaken in healthy subjects. In the first study, 18 subjects received the following in 1 of 2 randomized treatment sequences: a single dose of empagliflozin 25 mg alone and gemfibrozil 600 mg BID for 5 days with a single dose of empagliflozin 25 mg on the third day. In the second study, 18 subjects received a single dose of empagliflozin 10 mg, a single dose of empagliflozin 10 mg coadministered with a single dose of rifampicin 600 mg, and probenecid 500 mg BID for 4 days with a single dose of empagliflozin 10 mg on the second day in 1 of 6 randomized treatment sequences. In the gemfibrozil study, 11 subjects were male, mean age was 35.1years and mean body mass index (BMI) was 23.47kg/m2. In the rifampicin/probenecid study, 10 subjects were male, mean age was 32.7years and mean BMI was 23.03kg/m2. Exposure to empagliflozin was increased by coadministration with gemfibrozil (AUC0–∞: geometric mean ratio [GMR], 158.50% [90% CI, 151.77–165.53]; Cmax: GMR, 115.00% [90% CI, 106.15–124.59]), rifampicin (AUC0–∞: GMR, 135.20% [90% CI, 129.58–141.06]; Cmax: GMR, 175.14% [90% CI, 160.14–191.56]), and probenecid (AUC0–∞: GMR, 153.47% [90% CI, 146.41–160.88]; Cmax: GMR, 125.60% [90% CI, 113.67–138.78]). All treatments were well tolerated. Increases in empagliflozin exposure were <2-fold, indicating that the inhibition of the OATP1B1/1B3, OAT3 transporter, and uridine diphosphate glucuronosyltransferases did not have a clinically relevant effect on empagliflozin exposure. No dose adjustments of empagliflozin were necessary when it was coadministered with gemfibrozil, rifampicin, or probenecid. ClinicalTrials.gov identifiers: NCT01301742 and NCT01634100.

Dapagliflozin, a highly selective inhibitor of the renal sodium-glucose cotransporter-2, increases urinary excretion of glucose and lowers plasma glucose levels in an insulin-independent manner. We evaluated the efficacy and safety of dapagliflozin in treatment-naive patients with type 2 diabetes. This was a 24-week parallel-group, double-blind, placebo-controlled phase 3 trial. Patients with A1C 7.0-10% (n = 485) were randomly assigned to one of seven arms to receive once-daily placebo or 2.5, 5, or 10 mg dapagliflozin once daily in the morning (main cohort) or evening (exploratory cohort). Patients with A1C 10.1-12% (high-A1C exploratory cohort; n = 73) were randomly assigned 1:1 to receive blinded treatment with a morning dose of 5 or 10 mg/day dapagliflozin. The primary end point was change from baseline in A1C in the main cohort, statistically tested using an ANCOVA. In the main cohort, mean A1C changes from baseline at week 24 were -0.23% with placebo and -0.58, -0.77 (P = 0.0005 vs. placebo), and -0.89% (P < 0.0001 vs. placebo) with 2.5, 5, and 10 mg dapagliflozin, respectively. Signs, symptoms, and other reports suggestive of urinary tract infections and genital infection were more frequently noted in the dapagliflozin arms. There were no major episodes of hypoglycemia. Data from exploratory cohorts were consistent with these results. Dapagliflozin lowered hyperglycemia in treatment-naive patients with newly diagnosed type 2 diabetes. The near absence of hypoglycemia and an insulin-independent mechanism of action make dapagliflozin a unique addition to existing treatment options for type 2 diabetes.

Background To investigate the long-term efficacy and safety of empagliflozin monotherapy compared with placebo and sitagliptin in drug-naïve patients with type 2 diabetes mellitus. Methods Of 899 patients randomized to receive empagliflozin 10 mg, empagliflozin 25 mg, placebo, or sitagliptin 100 mg once daily for 24 weeks, 615 continued in a double-blind extension trial for ≥52 weeks. Exploratory endpoints included changes from baseline in HbA1c, weight and blood pressure at week 76. Results Compared with placebo, adjusted mean changes from baseline in HbA1c at week 76 were −0.78 % (95 % CI −0.94, −0.63; p < 0.001) and −0.89 % (95 % CI −1.04, −0.73; p < 0.001) for empagliflozin 10 mg and 25 mg, respectively. Compared with placebo, adjusted mean changes from baseline in weight at week 76 were −1.8 kg (95 % CI −2.4, −1.3; p < 0.001) and −2.0 kg (95 % CI −2.6, −1.5; p < 0.001) for empagliflozin 10 mg and 25 mg, respectively. Empagliflozin led to reductions in systolic blood pressure (SBP) compared with placebo in the primary analysis but not in sensitivity analyses. Compared with sitagliptin, empagliflozin 25 mg reduced HbA1c and both empagliflozin doses reduced weight and SBP. Adverse events (AEs) were reported in 76.8, 78.0, 76.4 and 72.2 % of patients on empagliflozin 10 mg, empagliflozin 25 mg, placebo and sitagliptin, respectively. Confirmed hypoglycaemic AEs (glucose ≤3.9 mmol/l and/or requiring assistance) were reported in two patients (0.9 %) per treatment group. Conclusions Empagliflozin monotherapy for ≥76 weeks was well tolerated and led to sustained reductions in HbA1c and weight compared with placebo. Trial registration: clinicaltrials.gov NCT01289990

Background This study evaluated the effect of empagliflozin on postprandial glucose (PPG) and 24-hour glucose variability in Japanese patients with type 2 diabetes mellitus (T2DM). Methods Patients (N = 60; baseline mean [SD] HbA1c 7.91 [0.80]%; body mass index 24.3 [3.2] kg/m 2 ) were randomized to receive empagliflozin 10 mg (n = 20), empagliflozin 25 mg (n = 19) or placebo (n = 21) once daily as monotherapy for 28 days. A meal tolerance test and continuous glucose monitoring (CGM) for 24 hours were performed at baseline and on days 1 and 28. The primary endpoint was change from baseline in area under the glucose concentration-time curve 3 hours after breakfast (AUC 1–4h for PPG) at day 28. Results Adjusted mean (95%) differences versus placebo in changes from baseline in AUC 1-4h for PPG at day 1 were −97.1 (−126.5, −67.8) mg · h/dl with empagliflozin 10 mg and −91.6 (−120.4, −62.8) mg · h/dl with empagliflozin 25 mg (both p < 0.001 versus placebo) and at day 28 were −85.5 (−126.0, −45.0) mg · h/dl with empagliflozin 10 mg and −104.9 (−144.8, −65.0) mg · h/dl with empagliflozin 25 mg (both p < 0.001 versus placebo). Adjusted mean (95% CI) differences versus placebo in change from baseline in 24-hour mean glucose (CGM) at day 1 were −20.8 (−27.0, −14.7) mg/dl with empagliflozin 10 mg and −23.9 (−30.0, −17.9) mg/dl with empagliflozin 25 mg (both p < 0.001 versus placebo) and at day 28 were −24.5 (−35.4, −13.6) mg/dl with empagliflozin 10 mg and −31.7 (−42.5,-20.9) mg/dl with empagliflozin 25 mg (both p < 0.001 versus placebo). Changes from baseline in mean amplitude of glucose excursions (MAGE; CGM) were not significantly different with either empagliflozin dose versus placebo at either timepoint. Curves of mean glucose (CGM) did not change between baseline and day 1 or 28 with placebo, but shifted downward with empagliflozin. Percentage of time with glucose ≥70 to <180 mg/dl increased from 52.0% at baseline to 77.0% at day 28 with empagliflozin 10 mg and from 55.0% to 81.1% with empagliflozin 25 mg, without increasing time spent with hypoglycemia. Conclusion Empagliflozin for 28 days reduced PPG from the first day and improved daily blood glucose control in Japanese patients with T2DM. Trial registration Clinicaltrials.gov NCT01947855