Regarding the laboratory exams, similarly to the previous study, a higher frequency of ANA positive in JIA-U patients was found: 72.2% versus 88.4% of the previous study, while the inflammation index ESR was positive at the uveitis diagnosis in 55.6% of JIA-U patients in this study compared to 76.5% of the previous one. This evidence concerns the gene BTG3 and juvenile idiopathic arthritis.