rs10782001 in FBXL19 [38], rs1975974 in C17orf51 [38], rs12720356 in TYK2 [3, 39], rs3792876 in SLC22A4 [3], rs6908425 in CDKAL1 [40], and rs13437088 in HLA-B/MICA [35] have previously been associated with psoriasis, but not with type I psoriasis. This evidence concerns the gene SLC22A4 and psoriasis.