Purpose: T cells play an important role in the pathogenesis of uveitis. Recent studies have indicated that the TNFSF15 gene that encodes the TL1A protein can regulate the differentiation and activation of T cells. TNFSF15 gene polymorphisms have been found to be associated with several autoimmune disorders. A possible association of TNFSF15 with acute anterior uveitis (AAU) has not yet been reported and was therefore the purpose of our study.
Methods: Eight single nucleotide polymorphisms (SNPs) were examined using TaqMan SNP Genotyping Assay or PCR-restriction fragment length polymorphism in 983 AAU patients and 1128 healthy controls. Genotype distributions and allele frequencies were compared using χ2 analysis between AAU patients and healthy controls. Stratified analysis was also performed according to ankylosing spondylitis (AS) status. The TNFSF15 mRNA expression was quantified by real-time PCR.
Results: A significantly decreased frequency of the TT genotype in TNFSF15-rs3810936 was found in AAU patients (P = 6.36 × 10(-6), corrected P[Pc] = 1.52 × 10(-4), OR = 0.6, 95% CI = 0.5-0.8). Stratification according to AS status did not reveal a difference concerning the association with TNFSF15-rs3810936. None of the other TNFSF15 SNPs tested were associated with AAU.
Conclusions: This study shows an association between TNFSF15-rs3810936 and AAU and suggests that the TL1A/DR3 pathway may be implicated in the pathogenesis of this disease.
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