• Muhammad Shariq Usman, Tariq Jamal Siddiqi, Muhammad Mustafa Memon, Muhammad Shahzeb Khan, Wasiq Faraz Rawasia, Talha Ayub Muhammad M 2 Division of Cardiology, Cook County Health and Hospitals System, USA., Jayakumar Sreenivasan, and Yasmeen Golzar.
• 1 Department of Internal Medicine, Dow University of Health Sciences (DUHS), Pakistan.
• Eur J Prev Cardiol. 2018 Mar 1; 25 (5): 495-502.

AbstractBackground The risks and benefits of sodium-glucose co-transporter 2 (SGLT2) inhibitors on cardiovascular outcomes have not been well established. We pooled evidence from all available clinical trials to assess the cardiovascular effects of this drug. Design A systematic review and meta-analysis of randomised controlled trials. Methods We queried electronic databases (MEDLINE, Scopus, CENTRAL and clinicaltrials.gov) from their inception to July 2017 for published and unpublished placebo controlled trials of SGLT2 inhibitors. Only studies with a follow-up period of at least 24 weeks and reporting at least one cardiovascular outcome were included. Results from trials were presented as odds ratios (ORs) with 95% confidence intervals (CIs) and were pooled using a random-effects model. Results Thirty-five eligible studies (canagliflozin, nine; empagliflozin, eight; dapagliflozin, 18), consisting of 34,987 patients with type 2 diabetes mellitus were included. Pooled results show that SGLT2 inhibitors, when compared to placebo, significantly reduce all-cause mortality (OR 0.79, 95% CI 0.70-0.89; P < 0.001), major adverse cardiac events (OR 0.8, 95% CI 0.76-0.92; P < 0.001), non-fatal myocardial infarction (OR 0.85, 95% CI 0.73-0.98; P = 0.03) and heart failure/hospitalisation for heart failure (OR 0.67, 95% CI 0.59-0.76; P < 0.001) in patients with type 2 diabetes mellitus. No significant difference was noted in the occurrence of stroke (OR 1.02, 95% CI 0.85-1.21; P = 0.87), atrial fibrillation (OR 0.61, 95% CI 0.31-1.19; P = 0.15) or unstable angina (OR 0.95, 95% CI 0.73-1.25; P = 0.73). In addition, there was no heterogeneity between different drugs in the SGLT2 inhibitor class for all of the clinical outcomes studied ( I2 = 0). Conclusions SGLT2 inhibitors significantly reduce the incidence of mortality, major adverse cardiac events, non-fatal myocardial infarction and heart failure in patients with type 2 diabetes mellitus. Subtypes of SGLT2 inhibitors appear to have similar cardiovascular effects.

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