ERAP1 and uveitis: Other genes, including IL23R, which is implicated in multiple forms of uveitis (including AAU, Behçet’s disease, and VKH), also plays a role in Th17 pathway activation, and ERAP1/ERAP2, which are involved in antigen processing, are strongly correlated with AAU and VKH, as well as the CFB, which is part of the alternative complement pathway and STAT4, which is associated mostly with Behçet’s disease, and serves as a crucial transcription factor in the Th1 immune response [160].