EDNRA and juvenile idiopathic arthritis: The diagnostic accuracy of the 14-3-3 Eta protein biomarker in prediction of RA disease occurrence in patients of the present study versus controls was at a cut-off point 14.5 μg/L, with AUC of 0.924, and 95% CI = 0.868–0.980, while its diagnostic accuracy in JIA patients was at an 8.5 μg/L cut off point, and AUC of 0.930 (95% CI = 0.875–0.985).