IL17F and psoriasis: In addition to the cytokines noted above such as IL17F (0.967), and CXCL13 (0.325), this set contained identified psoriasis-specific genes with less established functional roles, such as ARHGEF12 (0.303), ENTPD1 (0.628), LAYN (0.122) and HAVCR2 (0.560).