There was a lack of association between JIA and either TNFA variant when we included all studies; however, after excluding the Ozen et al. study, we identified an association between TNFA-238A and JIA (OR 0.69, 95% CI [0.52, 0.91], p = 0.0086) (Table 4). Here, TNF is linked to juvenile idiopathic arthritis.