Glucagon-Like Peptide 1 Receptor Agonists and Risk of Thyroid Cancer: An International Multisite Cohort Study

  • 0Centre for Public Health, Queen's University Belfast, Belfast, Northern Ireland.

Summary

This summary is machine-generated.

Glucagon-like peptide 1 receptor agonists (GLP1-RAs) did not increase thyroid cancer risk compared to dipeptidyl peptidase-4 inhibitors (DPP-4is) in type 2 diabetes patients. This study provides short-term safety reassurance for GLP1-RA use.

Area Of Science

  • Endocrinology
  • Oncology
  • Pharmacology

Background

  • Conflicting evidence exists regarding the association between glucagon-like peptide 1 receptor agonists (GLP1-RAs) and thyroid cancer risk.
  • Type 2 diabetes patients are often prescribed these medications, necessitating safety evaluations.

Purpose Of The Study

  • To investigate the association between GLP1-RA use and thyroid cancer risk compared to dipeptidyl peptidase-4 inhibitors (DPP-4is).
  • To assess the short-term safety profile of GLP1-RAs concerning thyroid cancer incidence.

Main Methods

  • A multisite cohort study and meta-analysis using six population-based databases (2007-2023).
  • Cox regression models with propensity score weighting were used to compare thyroid cancer risk between GLP1-RA and DPP-4i users.
  • Pooled hazard ratios (HR) and 95% confidence intervals (CIs) were calculated.

Main Results

  • The study included 98,147 GLP1-RA users and 2,488,303 DPP-4i users with a median follow-up of 1.8–3.0 years.
  • GLP1-RA use was not associated with an increased risk of thyroid cancer (pooled weighted HR 0.81, CI 0.59–1.12).
  • No increased risk was observed with increasing cumulative GLP1-RA dose.

Conclusions

  • This large, multisite study found no evidence of increased thyroid cancer risk with short-term GLP1-RA use in type 2 diabetes patients.
  • Findings offer reassurance for the short-term safety of GLP1-RAs.
  • Long-term safety data is still insufficient due to limited follow-up duration.

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