Compared to the control group, several genes—including AP1S3, CARD14, CDSN, FABP5, HLA-B, HLA-C, IL12B, IL17A, IL23R, LTA, NOD2, PRINS, TNF, and TRAF3IP2—were significantly upregulated in psoriasis samples (Figure 7A). Here, HLA-C is linked to psoriasis.