ITGAX and juvenile idiopathic arthritis: Myeloid cell cluster 15 (classic/intermediate monocytes) frequencies were increased in inactive JIA PB compared to active, whereas active JIA PB had increased frequencies of myeloid cluster 17 (activated mDCs) (cluster 15, 60.9 ± 2.4% of CD11c + PB cells from inactive JIA vs 52.3 ± 2.8% from active JIA PB samples, P = 0.0278; cluster 17, 9.7 ± 1.3% of CD11c + PB cells from inactive JIA vs 13.5 ± 1.1% from active JIA PB samples, P = 0.0314).