Polymorphisms (SNPs) in the HLA-DPB1 gene are associated with the susceptibility to uveitis in JIA (7), but the gene expression of HLA-DPB1 was (slightly) decreased in JIA cases either with or without uveitis compared to controls (JIA-U+, Log2[FC] = −0.33, P = 0.016; JIA-U−, Log2[FC] = −0.34, P = 0.013). Here, HLA-DPB1 is linked to juvenile idiopathic arthritis.