Xian-janssen Pharmaceutical Ltd.

This study tests whether guselkumab can help people with Crohn's disease whose current treatment (ustekinumab) has stopped working. Crohn's disease causes severe gut inflammation. About 78 Chinese adults with active Crohn's will receive guselkumab and be followed for 48 weeks to …

This study follows 200 Chinese patients with moderate-to-severe ulcerative colitis who have never taken biologic drugs. They will receive guselkumab as part of their normal care. Researchers will measure changes in symptoms and quality of life over 48 weeks to see how well the dr…