IFNA1 and juvenile idiopathic arthritis: ROC curves and AUC values of a classifier between CRMO, IFN, and JIA (Figure S2) indicated that IFN could be distinguished relatively well from CRMO and JIA (AUC = 0.7 ± 0.2/0.3), however CRMO is not easily differentiated from JIA (AUC = 0.5 ± 0.3), likely explained by the limited sample size.