Intestinal Ultrasound Predicts Primary Non-Response and Maintenance Relapse in Upadacitinib-Treated Active Crohn's Disease: A Multicenter, Prospective Cohort Study.
BACKGROUND Intestinal ultrasound (IUS) is increasingly used to monitor activity and predict treatment outcomes in Crohn's disease (CD), but its role in predicting primary non-response (PNR) to Upadacitinib (UPA) and identifying maintenance relapse remains unclear. METHODS In this multicenter prospective cohort study,...