Cardioprotective effects of dipeptidyl peptidase-4 inhibitors versus sulfonylureas in addition to metformin: a nationwide cohort study of patients with type 2 diabetes
Abstract
AIMS
Cardiovascular effects of dipeptidyl peptidase-4 inhibitors (DPP4i) versus sulfonylureas (SU) remain controversial in observational studies. This study aimed to evaluate the influence of DPP4i on major adverse cardiovascular events (MACEs), including acute myocardial infarction, cerebrovascular disease, heart failure, cardiogenic shock, malignant dysrhythmia, and revascularisation.
MATERIALS AND METHODS
We conducted a nationwide cohort study using claims data from the National Health Insurance in Taiwan from 2007 to 2013. We enrolled type 2 diabetes patients who received DPP4i or SU in addition to metformin. DPP4i users were matched to SU users using propensity scores at a ratio of 1:1. The study outcomes were hospitalisation for MACE, heart failure, acute myocardial infarction, cerebrovascular disease, coronary revascularisation, and hypoglycaemia.
RESULTS
There were 37,317 matched pairs of DPP4i and SU users with a mean follow-up of 2.1 years. Compared with SU users, DPP4i users showed a significantly lower risk of hospitalisation for MACE (HR 0.79 [95% CI 0.75-0.82]), heart failure (0.86 [0.79-0.93]), acute myocardial infarction (0.76 [0.68-0.92]), and cerebrovascular disease (0.72 [0.67-0.77]). Both sitagliptin (0.89 [0.85-0.94]) and vildagliptin ([0.77 [0.60-0.99]) showed a significantly lower risk of hospitalisation for MACE, but saxagliptin showed a borderline significantly higher risk of hospitalisation for heart failure (1.59 [1.00-2.55]).
CONCLUSIONS
DPP4i…
How strong is the evidence?
Evidence Hub reads this as a cohort study, done in people. 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.
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