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Genetics of type 2 diabetes.
Katharine R Owen1, Mark I McCarthy
1Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, Churchill Hospital Old Road, Headington, Oxford, OX3 7LJ, UK.
Current Opinion in Genetics & Development
|May 1, 2007
Summary
Researchers are identifying genetic variants linked to diabetes. While monogenic diabetes is well-understood, finding genes for type 2 diabetes is challenging, though TCF7L2 is a key discovery.
Area of Science:
- Genetics
- Endocrinology
- Metabolic Diseases
Background:
- Genetic variants are crucial for understanding diabetes etiology.
- Monogenic diabetes, particularly neonatal diabetes, has had significant genetic discoveries.
- Identifying genes for multifactorial type 2 diabetes remains a significant research challenge.
Purpose of the Study:
- To review the progress in identifying genetic variants associated with diabetes.
- To highlight the advancements in understanding monogenic diabetes genetics.
- To discuss the challenges and future directions in type 2 diabetes genetic research.
Main Methods:
- Review of existing biomedical research literature up to early 2007.
- Analysis of genetic studies focusing on monogenic and multifactorial diabetes.
- Anticipation of insights from large-scale genome-wide association studies.
Main Results:
- The genetic basis for most monogenic diabetes forms, especially neonatal diabetes, is largely identified.
- The TCF7L2 gene was identified in 2006 as a major type 2 diabetes susceptibility gene.
- Genome-wide association studies are expected to yield substantial new information.
Conclusions:
- Significant progress has been made in understanding the genetic basis of monogenic diabetes.
- The identification of TCF7L2 marks a critical step in unraveling type 2 diabetes genetics.
- Future large-scale genetic studies promise to deepen our understanding of type 2 diabetes.
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