Type 2 & other diabetes

Higher Genetic Risk for Type 2 Diabetes Is Associated With a Faster Decline of β-Cell Function in an East Asian Population

Diabetes CarePublished Prospective cohort study

Authors' conclusion

Individuals with a higher genetic risk for T2D exhibited not only a lower OGTT-derived β-cell function at baseline but also a notably more rapid decline during follow-up. This information could be used to enable a focused precision prevention with lifestyle intervention.

Study context

Population
Participants without T2D at baseline, community-based cohort in Korea; mean (SD) age 51.6 (8.7) years
Participants
6,311 participants
Exposure
High vs intermediate vs low genetic risk for T2D
Outcome
Longitudinal change of β-cell function (OGTT-derived disposition index, DI)
Follow-up
14 years
Methodological detailscommunity-based, biennial oral glucose tolerance tests (OGTTs) over 14 years
  • Community-based
  • Biennial OGTTs over 14 years

Main finding

As reported in the abstract

Longitudinal decline in log2-transformed OGTT-derived DI per year · mean follow-up 10.9 years
Faster decline in log2-transformed disposition index (DI) per year (longitudinal analysis), P = 2.1 × 10-3
1.83-fold
Per 1-SD increase in T2D polygenic risk score (PRS)
P = 1.2 × 10-4

Observational data: associations, not effects.

Further findings

Incident T2D · mean follow-up 10.9 years

DI at baseline

High vs low genetic risk: lower DI
25%

Lifestyle (Life's Essential 8) and DI decline

Healthy lifestyle attenuated the rate of decline in DI across all genetic risk groups

Original publication

Higher Genetic Risk for Type 2 Diabetes Is Associated With a Faster Decline of β-Cell Function in an East Asian Population. Diabetes Care. Published 3 June 2024. doi:10.2337/dc24-0058

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