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Published on: January 25, 2017
Interleukin-18 genetics and inflammatory disease susceptibility
1The Department of Cardiovascular Genetics, The Rayne Institute, London, UK.
Genes and Immunity
|January 12, 2007
Summary
Genetic variations in the interleukin-18 (IL18) gene, particularly promoter polymorphisms, may influence disease susceptibility. Recent studies using tagging-single-nucleotide polymorphism (tSNP) methods show genetic variation affects IL18 protein levels and disease risk.
Area of Science:
- Immunogenetics
- Molecular Biology
- Genomics
Background:
- Interleukin-18 (IL18) plays a crucial role in immunomodulation.
- Previous research on IL18 gene variants has focused on identifying associations with disease susceptibility and progression.
- No non-synonymous variants in IL18 have been identified despite extensive sequencing.
Purpose of the Study:
- To review and synthesize published association data for IL18 genetic variants.
- To focus on the impact of these variants on diseases characterized by aberrant inflammatory control.
- To highlight recent findings using tagging-single-nucleotide polymorphism (tSNP) methodology.
Main Methods:
- Compilation and critical reflection of existing association studies on IL18 variants.
- Analysis of polymorphisms within the IL18 proximal promoter and their potential impact on transcription factor binding.
- Application of the tagging-single-nucleotide polymorphism (tSNP) methodology following complete IL18 gene resequencing.
Main Results:
- Numerous polymorphisms in the IL18 proximal promoter have been identified, potentially affecting transcription factor binding.
- Association analyses of these promoter variants have yielded inconsistent results across different populations.
- Recent tSNP-based studies indicate that genetic variation in IL18 influences protein levels and disease risk.
Conclusions:
- While promoter polymorphisms in IL18 have been investigated, consistent associations with disease remain elusive.
- The tSNP approach offers a promising strategy for understanding the functional impact of IL18 genetic variation.
- Further research is warranted to elucidate the role of IL18 genetic variations in inflammatory diseases.
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