An Observational Study to Learn About Velsipity After Long Term Use in Patients With Ulcerative Colitis

Patients must meet all of the following inclusion criteria to be eligible for inclusion in the study:

1. Patients with moderate to severe ulcerative colitis for whom treatment with this drug was started for the first time after the contract date for this study. Patients who have participated in a clinical study of this drug in the past or patients who have participated in this study are excluded.
2. Patients who understand the contents of this study and give consent to provision of the information collected in this study to third parties and the use of it for other purposes.