There was no significant difference with regards to IL-22 serum levels among BD patients with active uveitis (153±106 pg/ml, n = 18), BD patients without active uveitis (93±71 pg/ml, n = 17), AAU patients (128±79 pg/ml, n = 12) or normal controls (113±95 pg/ml, n = 18) (Fig. 1C). This evidence concerns the gene IL22 and uveitis.