How well does a new inflammatory bowel disease treatment work in everyday care

This study is watching how well guselkumab, a newer type of medication, works for people with moderate-to-severe ulcerative colitis or Crohn's disease in real-world medical practice across the UK. Researchers won't give you the medication — you'll receive it as part of your normal care from your doctor. The study simply collects information from your medical records to see how well the treatment is working for you and other patients.

While this medication has been tested in controlled clinical trials, researchers want to understand how it actually performs when used in everyday medical practice with diverse patients. This real-world information helps doctors learn whether the medication works as effectively outside the research setting and for different types of patients.