Gestational diabetes & diabetes in pregnancy

Genome-Wide Polygenic Risk Score Predicts Incident Type 2 Diabetes in Women With History of Gestational Diabetes

Diabetes CarePublished Multicohort study of a genome-wide polygenic risk score

Performance · Incident T2DResult — go to the resultOdds ratio 1.52 95% CI 1.05–2.21

Authors' conclusion

In cohorts of GDM women with diverse ancestry, T2D PRS was significantly associated with future development of T2D. A significant but small improvement was observed in AUROC when T2D PRS was integrated into clinical risk models to predict incident T2D.

Study context

Population
Women with a history of gestational diabetes mellitus (GDM), 5 cohorts of 4 different ancestries
Participants
1,895 women5 cohorts
Comparison
Genome-wide T2D polygenic risk score (PRS)
Outcome
Incident T2D
Follow-up
Range of 2 to 30 years
Methodological details5 independent cohorts, 4 ancestries
  • 5 independent cohorts
  • 4 ancestries

Performance

As reported in the abstract

2 to 30 years

Odds ratio

1.52

95% CI 1.05–2.21

P = 0.03

T2D PRS per 1-SD increase
OR 1.52 (95% CI 1.05–2.21); P = 0.03

Per 1-SD increase, as printed

Developed T2D
363 (19.2%)
T2D PRS higher in those who developed T2D
P = 2.3 × 10-11

Further findings

T2D PRS in women who developed T2D vs those who did not

T2D PRS higher in those who developed T2D
P = 2.3 × 10-11

Diagnostic utility of adding PRS to a clinical risk model (age, family history of diabetes, systolic blood pressure, BMI)

AUROC for T2D without vs with PRS
0.71 to 0.74
Continuous net reclassification improvement (NRI) with PRS (intermediate improvement), 95% CI 0.15-0.49
0.32
NRI P value
P = 3.0 × 10-4
  • Similar trend across study cohorts, with variation

Incident T2D among women with previous GDM · 2 to 30 years

Developed T2D
363 (19.2%)

Original publication

Genome-Wide Polygenic Risk Score Predicts Incident Type 2 Diabetes in Women With History of Gestational Diabetes. Diabetes Care. Published 28 June 2024. doi:10.2337/dc24-0022

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