Reassuring Data on GLP-1 RAs and Pancreatic Cancer Risk

PHILADELPHIA — New research provides more evidence that glucagon-like peptide 1 receptor agonists (GLP-1 RAs) do not increase the risk for pancreatic cancer.

Instead, the large electronic health record (EHR) analysis of patients with type 2 diabetes (T2D) found those taking GLP-1 RAs had a significantly lower risk for pancreatic cancer than peers on other antidiabetic medications. 

“Although there were previous reports suggesting possible association between pancreatic cancer and GLP-1 receptor agonist medications, this study provides reassurance that there is no observed increased incidence of pancreatic cancer in patients prescribed these medications,” said Khaled Alsabbagh Alchirazi, MD, with Aurora Healthcare in Brookfield, Wisconsin. 

He presented the study findings at the American College of Gastroenterology (ACG) 2024 Annual Scientific Meeting. 

Important Topic

Patients with T2D are at increased risk for several malignancies, including pancreatic cancer. Given the unique mechanism of action of GLP-1 RAs in the pancreas, it was important to investigate the relationship between use of these drugs and incidence of pancreatic cancer, he explained.

Using the TriNetX database, the study team identified 4.95 million antidiabetic drug naive T2D patients who were prescribed antidiabetic medications for the first time between 2005 and 2020. None had a history of pancreatic cancer. 

A total of 245,532 were prescribed a GLP-1 RA. The researchers compared GLP-1 RAs users to users of other antidiabetic medications — namely, insulin, metformin, alpha-glucosidase inhibitors, dipeptidyl-peptidase 4 inhibitors (DPP-4i), sodium-glucose cotransporter-2 inhibitors (SGLT2i), sulfonylureas, and thiazolidinediones. 

Patients were propensity score-matched based on demographics, health determinants, lifestyle factors, medical history, family history of cancers, and acute/chronic pancreatitis. 

The risk for pancreatic cancer was significantly lower among patients on GLP-1 RAs vs insulin (hazard ratio [HR], 0.47; 95% CI, 0.40-0.55), DPP-4i (HR, 0.80; 95% CI, 0.73-0.89), SGLT2i (HR, 0.78; 95% CI, 0.69-0.89), and sulfonylureas (HR, 0.84; 95% CI, 0.74-0.95), Alchirazi reported.

The results were consistent across different groups, including patients with obesity/ overweight on GLP-1 RAs vs insulin (HR, 0.53; 95% CI, 0.43-0.65) and SGLT2i (HR, 0.81; 95% CI, 0.69-0.96).

Strengths of the analysis included the large and diverse cohort of propensity score-matched patients. Limitations included the retrospective design and use of claims data that did not provide granular data on pathology reports.

The study by Alchirazi and colleagues aligns with a large population-based cohort study from Israel that found no evidence that GLP-1 RAs increase risk for pancreatic cancer over 7 years following initiation.

Separately, a study of more than 1.6 million patients with T2D found that treatment with a GLP-1 RA (vs insulin or metformin) was associated with lower risks for specific types of obesity-related cancers, including pancreatic cancer.

The study had no specific funding. Alchirazi had no relevant disclosures.