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Mirna Safia Abd El Aziz, Oscar Cahyadi, Juris Meier, Wolfgang E. Schmidt, Michael Nauck

• Some epidemiological data have suggested an elevated risk of acute pancreatitis and pancreatic cancer after exposure to glucagon-like peptide (GLP)-1 receptor agonists and dipeptidyl peptidase (DPP)-4 inhibitors. Recently, such outcomes have been assessed and adjudicated as adverse events of special interest in cardiovascular outcomes studies. We performed a meta-analysis of cases of acute pancreatitis and pancreatic cancer as well as any malignant neoplasm reported in cardiovascular outcomes trials (CVOTs) with GLP-1 receptor agonists and DPP-4 inhibitors. The numbers of cases observed with active drug or placebo (both on a background of standard care) were related to patient-years of observation. Rate ratios and their confidence intervals were calculated for the individual agents as well as for the classes of GLP-1 receptor agonists and DPP-4 inhibitors. Neither data on individual CVOTs of GLP-1 receptor agonists nor their meta-analysis [rate ratio: 1.05 (0.78–1.41)] indicated a significantly elevated risk of acute pancreatitis. All individual DPP-4 inhibitors displayed a non-significant trend towards an increased risk of acute pancreatitis, which was significant in the meta-analysis [1.75 (1.14–2.70); \(\it P\) = 0.01]. Neither GLP-1 receptor agonists nor DPP-4 inhibitors were associated with a significantly elevated or reduced risk of pancreatic cancer or for the totality of all malignant neoplasms. Based on a large database of randomized, placebo-controlled, prospective cardiovascular outcomes studies with GLP-1 receptor agonists and DPP-4 inhibitors, no signal for pancreatic cancer or any malignant neoplasms were detected. However, a 75% risk increase for the development of an acute pancreatitis was seen in the meta-analysis of DPP-4 inhibitor CVOTs.