We have previously shown that inflammatory T cells in the joint in JIA are predominantly of an activated memory phenotype and express high levels of the chemokine receptors CCR5 and CXCR3, and that this correlates with the highly Th-1 skewed phenotype of synovial T cells, which make high levels of IFNγ [18]. Here, CCR5 is linked to juvenile idiopathic arthritis.