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Association between the TAP1 gene codon 637 polymorphism and Graves' disease
Rong-Hsing Chen1, Wen-Chi Chen, Ching-Chu Chen
1Department of Medicine, China Medical University Hospital, China Medical University, Taichung, Taiwan.
Endocrine
|February 16, 2005
Summary
The transporter associated with antigen processing 1 (TAP1) gene polymorphism at codon 637 is linked to Graves' disease. Specifically, the G allele may increase the risk of developing Graves' disease.
Area of Science:
- Genetics
- Immunology
- Endocrinology
Background:
- Graves' disease (GD) is an autoimmune disorder affecting the thyroid.
- The transporter associated with antigen processing 1 (TAP1) gene plays a role in immune responses.
- Genetic variations in TAP1 may influence GD susceptibility.
Purpose of the Study:
- To investigate the association between TAP1 gene polymorphisms and Graves' disease pathogenesis.
- To evaluate the contribution of TAP1 gene single-site polymorphisms at codons 333 and 637 to GD development.
Main Methods:
- Study included 95 GD patients and 105 healthy controls.
- Polymerase chain reaction (PCR)-based restriction analysis was used to detect TAP1 gene polymorphisms.
- Statistical analysis was performed to compare genotype and allele frequencies between groups.
Main Results:
- No significant association was found for TAP1 gene polymorphisms at codon 333.
- A significant association was observed for the TAP1 gene polymorphism at codon 637.
- The GA heterozygote at codon 637 was more frequent in GD patients, and the A allele was less frequent compared to controls (p=0.0008).
Conclusions:
- The single-site polymorphism of the TAP1 gene at codon 637 is associated with Graves' disease.
- This polymorphism may serve as a predictive indicator for GD development.