Type 2 & other diabetes

Glucagon-Like Peptide 1 Receptor Agonists and 13 Obesity-Associated Cancers in Patients With Type 2 Diabetes

JAMA Netw OpenPublished Retrospective cohort study

An erratum to this article was published (JAMA Netw Open, 2 Jun 2025 ↗)

Authors' conclusion

In this study, GLP-1RAs were associated with lower risks of specific types of OACs compared with insulins or metformin in patients with T2D. These findings provide preliminary evidence of the potential benefit of GLP-1RAs for cancer prevention in high-risk populations and support further preclinical and clinical studies for the prevention of certain OACs.

Study context

Population
Patients with T2D without prior OAC diagnosis prescribed GLP-1 RA, insulins or metformin, March 2005 to November 2018, US EHR database of 113 million patients; mean age 59.8 (SD 15.1) years, 50.1% male
Participants
1,651,452 patients
Exposure
GLP-1 RA vs insulin or metformin
Outcome
Incident (first-time) diagnosis of each of 13 obesity-associated cancers (OACs)
Follow-up
15-year follow-up
Methodological detailsnationwide multicenter EHR database, propensity-score matched
  • Nationwide multicenter EHR database
  • Propensity-score matched

Main finding

As reported in the abstract

Incident OACs, GLP-1 RA vs insulin
GLP-1RAs vs InsulinHazard ratio (95% CI)
Gallbladder cancer
0.35(0.15–0.83)
Meningioma
0.37(0.18–0.74)
Pancreatic cancer
0.41(0.33–0.50)
Hepatocellular carcinoma
0.47(0.36–0.61)
Ovarian cancer
0.52(0.03–0.74)
Colorectal cancer
0.54(0.46–0.64)
Multiple myeloma
0.59(0.44–0.77)
Esophageal cancer
0.60(0.42–0.86)
Endometrial cancer
0.74(0.60–0.91)
Kidney cancer
0.76(0.64–0.91)
Stomach cancer; not statistically significant
0.73(0.51–1.03)

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)
Incident OACs, GLP-1 RAvs metforminKidney cancer; increased risk1.54 (1.27–1.87)

Incident obesity-associated cancers (OACs), GLP-1 RA vs metformin

Not associated with decreased risk of any cancers vs metformin
Hazard ratios (HRs) for colorectal and gallbladder cancer <1 vs metformin, not statistically significant

Original publication

Glucagon-Like Peptide 1 Receptor Agonists and 13 Obesity-Associated Cancers in Patients With Type 2 Diabetes. JAMA Netw Open. Published 1 July 2024. doi:10.1001/jamanetworkopen.2024.21305

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