Ripk2 mRNA expression levels were also higher in BD mice with eye symptoms than in mice with eye symptoms only (4.39 ± 0.30 vs. 0.78 ± 0.35, p = 0.008) and in normal mice (4.39 ± 0.30 vs. 1.0 ± 1.36, p = 0.07) (Figure 3B). Here, RIPK2 is linked to Behcet disease.