SLC25A20 and uveitis: ROC analysis revealed robust discriminatory capacity for AS diagnosis (HLX-AUC = 0.688; SLC25A20-AUC = 0.700) and superior performance in uveitis (HLX-AUC = 0.867; SLC25A20-AUC = 0.838; Fig 6C, 6D), and a generalized linear model integrating both biomarkers further confirmed their reliability (AS-AUC = 0.734; uveitis-AUC = 0.908; Fig 6E, 6F).