Type 2 & other diabetes

Type 2 diabetes pathway-specific polygenic risk scores elucidate heterogeneity in clinical presentation, disease progression and diabetic complications in 18,217 Chinese individuals with type 2 diabetes

DiabetologiaPublished Genetic association cohort study

Authors' conclusion

Beta cell dysfunction and lipodystrophy could be the driving pathological pathways in type 2 diabetes in individuals with normal weight. Genetic risks of beta cell dysfunction and obesity represent two major genetic drivers of type 2 diabetes heterogeneity in disease progression and diabetic complications, which are shared across ancestry groups. Type 2 diabetes psPRSs may help inform patient stratification according to aetiology and guide precision diabetes care.

Study context

Population
Chinese patients with T2D from Hong Kong
Participants
18,217 patients
Exposure
Pathway-specific polygenic risk scores (psPRSs) and total T2D polygenic risk score (PRS) vs clinical profile and outcomes
Outcome
Associations of psPRSs with onset, progression and complications
Methodological detailspathway-specific polygenic risk scores, hard-clustering and soft-clustering, Total T2D PRS summed by genome-wide significant T2D signals (n=1289)
  • Pathway-specific polygenic risk scores
  • Hard-clustering and soft-clustering
  • Total T2D PRS summed by genome-wide significant T2D signals (n=1289)

Main finding

As reported in the abstract

psPRS obesity: clinical requirement of insulin treatment, aHR
1.09 [1.05, 1.13], p<0.0001 (95% CI)
psPRS obesity: end-stage renal disease, aHR
1.10 [1.04, 1.16], p=0.0007 (95% CI)
psPRS obesity: CVD, aHR
1.10 [1.05, 1.16], p<0.0001 (95% CI)
psPRS beta cell dysfunction: reduced incident end-stage renal disease, aHR
0.90 [0.85, 0.95], p=0.0001 (95% CI)
psPRS beta cell dysfunction: reduced HF, aHR
0.83 [0.73, 0.93], p=0.0011 (95% CI)

Observational data: associations, not effects.

Original publication

Type 2 diabetes pathway-specific polygenic risk scores elucidate heterogeneity in clinical presentation, disease progression and diabetic complications in 18,217 Chinese individuals with type 2 diabetes. Diabetologia. Published 12 November 2024. doi:10.1007/s00125-024-06309-y

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