Abstract
Psoriasis is a chronic inflammatory skin disease with an immunogenetic background. This study aimed to determine the association between three functional SNPs of BANK1 (rs10516487, rs17266594 and rs3733197) with psoriasis in Southern Han Chinese population by determining their frequency in 242 patients with psoriasis and 317 healthy individuals. The genotype frequencies of the detected polymorphisms were analysed in relation to the susceptibility of psoriasis. Our data show that there is no significant difference in genotype distribution for the three BANK1 SNPs between patients and healthy controls. The AA frequency of rs3733197 is significantly higher in patients with psoriasis onset before the age of 23 than in those with late disease onset (P = 0.0069). In addition, analysis on BANK1 haplotype also suggests a protective role for TGC and CAT haplotype from psoriasis (OR 0.55, 95% CI: 0.34-0.89; P = 0.0144; OR 0.62, 95% CI: 0.42-0.92; P = 0.0175), whereas CGT haplotype is associated with increased risk of the disease (OR 1.38, 95% CI: 1.05-1.81, P = 0.0203). Overall, our result indicates that polymorphism in BANK1 is associated with susceptibility to psoriasis in Southern Han Chinese.
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