Assessment of thyroid cancer risk associated with glucagon‐like peptide 1 receptor agonist use

Nov 25, 2025Diabetes, obesity & metabolism

Thyroid cancer risk linked to using glucagon-like peptide 1 receptor drugs

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Abstract

Data from 101,732 participants showed low numbers of thyroid cancer events associated with glucagon-like peptide 1 receptor agonist (GLP-1RA) use.

  • Hazard ratios for overall thyroid cancer risk were 1.70 and 1.83 for pooled GLP-1RA compared to placebo and active comparators, respectively.
  • Cardiovascular outcome trials indicated a hazard ratio of 1.41 for pooled GLP-1RA versus placebo.
  • Post-marketing surveillance indicated a thyroid cancer reporting rate of 0.001 cases per 100 patient-years.
  • No association was supported between liraglutide or semaglutide exposure and thyroid cancer events in the post-marketing data.
  • Analysis of real-world data showed a hazard ratio of 0.87 for thyroid cancer occurrence in GLP-1RA users compared to sodium-glucose cotransporter-2 inhibitors.

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Key numbers

1.70
Thyroid Cancer Hazard Ratio
Hazard ratio for pooled GLP-1RA vs. pooled placebo.
0.001 cases/100 PYE
Thyroid Cancer Reporting Rate
Post-marketing surveillance data for liraglutide and semaglutide.
0.87
MarketScan Hazard Ratio
Hazard ratio for GLP-1RA users vs. SGLT2i users.

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