Background: To present the real-world evidence on the safety and effectiveness of ustekinumab (UST) through 52-week treatment for Crohn's disease (CD) under an analysis of post-market surveillance data in Japan.
Methods: This prospective, post-marketing surveillance study was conducted in 341 patients from 91 medical facilities in Japan. Patients received UST 90 mg injected subcutaneously once every 12 weeks (or every 8 weeks if patients show weak effectiveness) after an induction dose given intravenously.