For instance, in the uveitis only group, the genes KLHL21, MYLIP, ZNFX1, PDE4A, TNFRSF21, and N4BP2L2 were downregulated, while METTL72, GAPT, CD180, CCR2, and TLR7 were upregulated when comparing uveitis patients with healthy controls (Figure 6C). Here, PDE4A is linked to uveitis.