Genetic Discovery and Risk Prediction for Type 1 Diabetes in Individuals Without High-Risk HLA-DR3/DR4 Haplotypes
Authors' conclusion
In total, we identified heterogeneity in T1D genetic risk dependent on high-risk HLA-DR3/DR4 haplotype, which uncovers disease mechanisms and enables more accurate prediction of T1D across the HLA background.
Study context
- Population
- Individuals without high-risk HLA-DR3/DR4 haplotypes (non-DR3/DR4 samples)non-DR3/DR4 samples
- Participants
- 12,316 individuals
- Comparison
- Non-DR3/DR4 genetic risk score (GRS) vs existing GRS2
- Outcome
- Genetic drivers of T1D in non-DR3/DR4
Methodological detailsfine-mapping, heterogeneity tests, genetic risk score development
- Fine-mapping
- Heterogeneity tests
- Genetic risk score development
Performance
As reported in the abstract
- T1D risk variants identified in non-DR3/DR4 samples
- 18
Further findings
| Outcome | Non-DR3/DR4 GRS | P value |
|---|---|---|
| Discrimination of non-DR3/DR4 T1D from no diabetesNon-DR3/DR4 GRS outperformed GRS2 | P = 7.48 × 10-32 | |
| AUC | 0.867 | |
| Discrimination of non-DR3/DR4 T1D from T2DNon-DR3/DR4 GRS outperformed GRS2 | P = 4.94 × 10-44 | |
| AUC | 0.907 |
Original publication
Genetic Discovery and Risk Prediction for Type 1 Diabetes in Individuals Without High-Risk HLA-DR3/DR4 Haplotypes. Diabetes Care. Published 3 December 2024. doi:10.
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