UGT2A3 and ulcerative colitis: In the validation datasets, UGT2A3 exhibited significant expression differences between active ulcerative colitis and healthy controls (Figures 3C, E), with AUCs of 1.000 (95% CI: 1.000–1.000) and 0.996 (95% CI: 0.976–1.000), respectively (Figures 3D, F).