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Dipeptidyl Peptidase-4 Inhibitors and the Risk of Fractures in Type 2 Diabetes Mellitus Patients: A Bayesian Network
Tufail Ahmad1, Mohammad Adil2, Mohammad Azharuddin1
1Department of Pharmaceutical Medicine, Division of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
Background/Objective:
Type 2 diabetes mellitus (T2DM) increases the risk of fractures and its effects on bone health. The impact of dipeptidyl peptidase-4 inhibitors (DPP-4i) on bone fracture risk is unclear. We performed a network meta-analysis (NMA) to assess the impact of DPP-4i on fracture risk in patients with T2DM.
Methods:
A comprehensive systematic literature search was conducted on PubMed/Medline, Cochrane Library, and ClinicalTrials.gov until June 2024 to identify RCTs reporting fracture events with DPP-4i among T2DM patients. A Bayesian NMA has been performed to calculate the odds ratio (OR) and 95% credible intervals (CrI). Surface under the cumulative ranking analysis (SUCRA) was utilized to assess the rank probability of DPP-4i.
Results:
A total of 85 RCTs were identified, including 89,965 T2DM patients with 1,083 fracture events. In the direct meta-analysis, DPP-4i did not elevate fracture risk compared to placebo or other oral anti-diabetics (OADs) (OR (95%CI): 1.04 (0.91-1.18); p=0.57 and 1.18 (0.79-1.74); p=0.96, respectively). Alogliptin and sitagliptin indicated a non-significant trend towards reducing fracture risk compared to placebo (OR (95%CI): 0.59 (0.31-1.15); p=0.12) and OADs (OR (95%CI): 0.73 (0.41-1.30); p=0.28), respectively. In the NMA, alogliptin significantly reduced fracture risk compared to linagliptin and SGLT2i (OR (95%CrI): 0.41 (0.16-0.93) and 0.16 (0.017-0.83), respectively). Conversely, linagliptin increased fracture risk compared to sulfonylurea (OR (95%CrI): 2.3 (1.1-5.2)). According to SUCRA, alogliptin (84%) ranked as the preferred treatment for reducing fracture risk in T2DM patients.
Conclusion:
Overall, DPP-4i was not associated with an increased risk of fractures in patients with T2DM. However, alogliptin demonstrated a reduced risk of fractures when compared to both linagliptin and SGLT2i. Further long-term clinical studies are needed to confirm the present findings.
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