GSTO1 and psoriasis: Table 3 presents the GSTO1 haplotypes and their correlation with the risk of psoriasis, analyzed for both the overall population and stratified by sex. This study identified four prevalent haplotypes of GSTO1, designated as H1–H4, which exhibited a frequency exceeding 2% within the study populations. As shown in Table 3, none of the GSTO1 haplotypes were found to be associated with the risk of psoriasis (Pperm > 0.05). SNP rs11191736 exhibited a positive linkage disequilibrium (p < 0.001) with the polymorphisms rs34040810 (D’ = 0.497), rs2289964 (D’ = 0.441), and rs187304410 (D’ = 0.426).