In the CD group, the AUC of diagnostic genes H2BC5 and AQP9 were 61.333% and 93.909%, in the psoriasis group, the AUC of IL1R2, AQP9, ZNF14 and H2BC5 were 75.641%, 82.906%, 93.162%, and 51.709% (Figure 5C). The gene discussed is IL1R2; the disease is psoriasis.