This variant is highly linked with three psoriasis risk SNPs (rs2066807, rs2066808, and rs2066819; r2 = 0.9523, 0.9388, and 0.9517, respectively) [21, 24–27, 29] located within the STAT2 gene region (Additional file 1: Figure S3a). Here, STAT2 is linked to psoriasis.