Kakamigahara

Crohns disease is a chronic inflammatory condition affecting the digestive tract and is currently incurable. This research aims to evaluate how safe and effective the drug upadacitinib is for treating moderately to severely active Crohns disease in real-world settings. The study will monitor any adverse events and track changes in disease activity among participants. All participants will receive upadacitinib as prescribed by their own doctors according to approved local guidelines. The study plans to enroll about 240 participants in Japan who have recently started upadacitinib treatment. Treatment will follow routine clinical practice without altering the prescribed approach. Participants will be followed for up to 64 weeks with visits that may occur in person or virtually, aligned with standard care. Researchers will assess outcomes such as the percentage of participants experiencing serious infections related to the drug. There is expected to be no extra burden beyond usual medical care throughout the study period.