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Type 1 Diabetes Genetic Risk Scores: History, Application and Future Directions
Mustafa Tosur1,2, Suna Onengut-Gumuscu3, Maria J Redondo4
1Department of Pediatrics, Division of Diabetes and Endocrinology, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA. mustafa.tosur@bcm.edu.
Current Diabetes Reports
|February 7, 2025
Summary
Genetic risk scores simplify type 1 diabetes (T1D) genetics, aiding in classification and risk prediction. Further research and addressing implementation barriers are needed for clinical use.
Area of Science:
- Genetics
- Immunology
- Endocrinology
Background:
- Type 1 diabetes (T1D) has a complex genetic basis involving over 90 loci.
- The human leukocyte antigen (HLA) locus accounts for roughly half of the genetic risk.
- Non-HLA loci also contribute to T1D susceptibility.
Purpose of the Study:
- To review the genetics of type 1 diabetes (T1D).
- To explore the development, research, and clinical applications of T1D genetic risk scores.
- To discuss future directions in the field.
Main Methods:
- Review of genetic loci associated with T1D risk.
- Analysis of the development and application of T1D genetic risk scores.
- Synthesis of current research findings and identification of knowledge gaps.
Main Results:
- T1D genetic risk scores integrate information from single nucleotide polymorphisms (SNPs) in HLA and non-HLA regions.
- These scores are valuable for classifying diabetes types, predicting T1D risk, and assessing prognosis.
- Current scores aid in understanding diabetes heterogeneity but have limitations in predicting specific disease transitions and treatment responses.
Conclusions:
- T1D genetic risk scores offer significant utility in research and clinical contexts.
- Further research is required to develop and validate scores across diverse populations.
- Overcoming barriers like cost and professional training is crucial for routine clinical integration.
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