Association Between Use of Dipeptidyl Peptidase-4 Inhibitors and the Risk of Acute Kidney Injury: A Nested Case-Control Study
2016
Abstract Objective To examine the risk of acute kidney injury (AKI) in a nationwide cohort of patients with type 2 diabetes initiating dipeptidyl peptidase-4 (DPP-4) inhibitors. Patients and Methods This nested case-control study of a cohort of adult DPP-4 inhibitor users with type 2 diabetes who were hospitalized for AKI between January 1, 2010, and December 31, 2013, was conducted using Taiwan's National Health Insurance Research Database. Each AKI case was matched with one control subject according to duration of follow-up, age, sex, urbanization level, monthly income, comorbidity severity, and well-known predisposing factors for AKI. Odds ratios (ORs) for AKI were calculated according to current, recent, or past use of DPP-4 inhibitors. Results A total of 6752 cases with AKI and 6752 matched controls were analyzed. The exposure prevalence of DPP-4 inhibitor use in the previous year was higher among patients with AKI (adjusted OR, 1.20; 95% CI, 1.05-1.36; P =.006). In a stratified analysis, the association was significant for current DPP-4 inhibitor use (adjusted OR, 1.26; 95% CI, 1.08-1.48; P =.004), but not for recent or past use. Conclusion In this large contemporary cohort, DPP-4 inhibitor users had an increased risk of AKI development compared with nonusers. Further research is warranted to investigate the mechanism underlying this association.
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