A detailed laboratory diagnosis of uveitis did not confirm infection for Lyme disease, bartonellosis, toxocariasis, HSV-1, HSV-2, toxoplasmosis, syphilis, cytomegalovirus, leptospirosis, VZV, brucellosis, HIV 1/2, antinuclear antibodies (ANA), anti-neutrophil cytoplasmic antibodies (ANCA), rheumatoid factor or fecal parasites. This evidence concerns the gene BTG3 and syphilis.