• E Raschi, E Poluzzi, A Koci, I C Antonazzo, G Marchesini, and F De Ponti.
• Alma Mater Studiorum - University of Bologna, Dept. of Medical and Surgical Sciences, Pharmacology Unit, Bologna, Italy.
• Nutr Metab Cardiovasc Dis. 2016 May 1; 26 (5): 380-6.

Background And AimsWe tested the possible association between dipeptidyl peptidase-4 inhibitors (DPP-4-I) use and heart failure (HF) occurrence by assessing the publicly available US-FDA Adverse Event Reporting System (FAERS).MethodsFAERS data reporting HF and DPP-4-Is use in the period from the fourth quarter of 2006 through 2013 were extracted, using the Standardized MedDRA Query "Cardiac failure". Disproportionality (case/non-case method) was implemented by calculating Reporting Odds Ratios (RORs) with 95% Confidence Interval (CI): (1) exploratory analysis on the entire FAERS (using rosiglitazone as positive control); (2) consolidated analyses by therapeutic area (within antidiabetics), correcting for event- and drug-related competition bias and adjusting for co-reported drugs as confounders.ResultsHF during DPP4-I use was recorded in 390 reports (4.4% of total reports). In exploratory analysis, statistically significant ROR emerged for DPP-4-I as a class (ROR = 1.17; 95% CI = 1.05-1.29), saxagliptin (1.68; 1.29-2.17), vildagliptin (2.39; 1.38-4.14), and rosiglitazone (13.98; 13.30-14.70). In consolidated analyses, the ROR for saxagliptin (2.60; 1.92-3.50) and vildagliptin (4.07; 2.28-7.27) increased, and became also significant for sitagliptin (1.61; 1.40-1.86). Concomitant drugs were reported in more than 50% of cases; the adjusted RORs of saxagliptin (2.30; 1.70-3.10), vildagliptin (3.15; 1.76-5.63), and sitagliptin (1.48; 1.28-1.71) were nonetheless significant.ConclusionFAERS data are consistent with clinical studies on a possible association between saxagliptin and HF. The disproportionate reporting of HF with sitagliptin, conflicting with a recent phase IV trial, suggests that cardiovascular safety requires close post-marketing vigilance by clinicians of individual DPP-4-I in the community until the issue of class effect is solved.Copyright © 2016 The Italian Society of Diabetology, the Italian Society for the Study of Atherosclerosis, the Italian Society of Human Nutrition, and the Department of Clinical Medicine and Surgery, Federico II University. Published by Elsevier B.V. All rights reserved.

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