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Disease association of the CD103 polymorphisms in Taiwan Chinese Graves' ophthalmopathy patients
Yu-Huei Liu1, Rong-Hsing Chen, Wen-Chi Chen
1Genetic Center, China Medical University Hospital, Taichung, Taiwan.
Objective:
To evaluate whether variations in the CD103 gene could be associated with Graves' ophthalmopathy (GO) in patients with Graves' disease.
Design:
Case-control study.
Participants:
A total of 484 Chinese patients with Graves' disease in Taiwan, including 203 patients with GO and 281 patients without GO, were enrolled.
Methods:
Five single nucleotide polymorphisms (SNPs) in CD103 were genotyped using an assay-on-demand allelic discrimination assay and detection system according to the manufacturer's instructions.
Main Outcome Measures:
Association of SNPs in CD103 with the development of GO.
Results:
The CD103 SNP rs11652878 was associated with GO, which may decrease the risk of GO by 1.57-fold (P = 0.029). The Ht5-GCGCG haplotype, composed of 5 SNPs in the CD103 gene (rs1716, rs3744679, rs11652878, rs16953477, and rs9905739), were protective haplotypes (P = 0.010). Moreover, the heterozygous genotype (Ht5/non-Ht5) was correlated with a reduced risk of GO and high grades of goiter as compared with the non-Ht5/non-Ht5 genotype (P = 0.006 and P = 0.048, respectively). Logistic analysis confirmed the contribution of CD103 rs11652878 to the protection of GO.
Conclusions:
These data suggest that patients with Graves' disease in the presence of the G allele of SNP rs11652878, especially Ht5-GCGCG, in CD103 are less susceptible toward the development of GO.
