PRSS27 and psoriasis: Most of these genes (CD24, EPHB2, FABP5, HPSE, KYNU, OAS3, OASL, PRSS27, SAMD9, SERPINB13, STAT1, TMPRSS11D) were also identified in hub genes of the module most associated with psoriasis progression in external datasets GSE6710/GSE14905 (S3 Table).