The Clinical Efficacy and Influence Factors of Individualized Treatment of Ustekinumab in Crohn's Disease

After the first sufficient intravenous infusion of UST (6 mg/kg), the patient's response was assessed based on PRO2 at week 8, and an individualized treatment plan was developed. At week 8, the patients with incomplete response of PRO2 (a decline of PRO2 was less than 50% from baseline or still in moderate to severe active phase of PRO2) were given one or more UST intravenous re-induction (6 mg/kg) every 4 or 6 weeks.