BTG3 and uveitis: Although the methods applied have been validated in other studies [7,9,18-21], as an internal validation we reproduced previously reported associations of uveitis including age [22-26], oligoarticular-onset disease [3,22-25,27], antinuclear antibody (ANA) status [22-25,27], rheumatoid factor (RF) status [22,23,28], and the presence of psoriasis in the patient or in immediate relatives [29].