Type 2 & other diabetes

Glucagon-like peptide-1 receptor agonists and risk of suicidality among patients with type 2 diabetes: active comparator, new user cohort study

BMJPublished Active comparator, new user cohort study

An erratum to this article was published (BMJ, 28 Apr 2025 ↗)

Authors' conclusion

In this large cohort study, the use of GLP-1 receptor agonists was not associated with an increased risk of suicidality compared with the use of DPP-4 inhibitors or SGLT-2 inhibitors in patients with type 2 diabetes.

Study context

Population
Patients with T2D, UK primary care practices (Clinical Practice Research Datalink)two cohorts
Participants
36,082 / 234,028 / 32,336 / 96,212
Exposure
GLP-1 RA vs DPP-4i; GLP-1 RA vs SGLT2i
  • GLP-1 receptor agonistsn = 36,082
  • DPP-4 inhibitorsn = 234,028reference
  • GLP-1 receptor agonistsn = 32,336
  • SGLT-2 inhibitorsn = 96,212reference
Outcome
Suicidality: composite of suicidal ideation, self-harm and suicide
Methodological detailspropensity score fine stratification weighted Cox models, UK Clinical Practice Research Datalink linked to HES and ONS death registration, Followed until 29 March 2021
  • Propensity score fine stratification weighted Cox models
  • UK Clinical Practice Research Datalink linked to HES and ONS death registration
  • Followed until 29 March 2021

Main finding

As reported in the abstract

Suicidality:
  • Suicidal ideation
  • Self-harm
  • Suicide

GLP-1 receptor agonists

3.9 per 1000 person years

DPP-4 inhibitors

1.8 per 1000 person years

GLP-1 receptor agonists

4.3 per 1000 person years

SGLT-2 inhibitors

2.7 per 1000 person years

Hazard ratio (95% CI)
GLP-1 receptor agonistsvs DPP-4 inhibitorscohort 1; after confounding factors accounted for
1.02(0.85–1.23)
GLP-1 receptor agonistsvs DPP-4 inhibitorscohort 1; crude
2.08(1.83–2.36)
GLP-1 receptor agonistsvs SGLT-2 inhibitorscohort 2; after confounding factors accounted for
0.91(0.73–1.12)
GLP-1 receptor agonistsvs SGLT-2 inhibitorscohort 2; crude
1.60(1.37–1.87)

Observational data: associations, not effects.

Secondary outcomes

Suicidal ideation, self-harm and suicide separately

Similar findings in both cohorts

Original publication

Glucagon-like peptide-1 receptor agonists and risk of suicidality among patients with type 2 diabetes: active comparator, new user cohort study. BMJ. Published 26 February 2025. doi:10.1136/bmj-2024-080679

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