Evaluation of the Efficacy and Safety of Dual-targeted Therapy With Upadacitinib and Ustekinumab Versus Intensified Ustekinumab Therapy in Crohn's Disease Patients With an Insufficient Response to Standard-dose Ustekinumab: A Randomized Controlled Trial
The goal of this clinical trial is to evaluate the efficacy and safety of dual-target therapy (Ustekinumab combined with Upadacitinib) versus intensified Ustekinumab monotherapy in patients with Crohn's disease who have an inadequate response to standard doses of Ustekinumab. The main questions it aims to answer are: Is dual-target therapy more effective than intensified Ustekinumab monotherapy in achieving endoscopic remission in Crohn's disease patients? Is dual-target therapy as safe as intensified Ustekinumab monotherapy in terms of adverse events? Participants will: Receive either dual-target therapy (Ustekinumab combined with Upadacitinib) or intensified Ustekinumab monotherapy. Attend regular clinic visits for monitoring and assessments. Complete questionnaires about their symptoms and quality of life. Undergo routine blood tests and endoscopic evaluations to assess disease activity. Researchers will compare the dual-target therapy group to the intensified Ustekinumab monotherapy group to see if dual-target therapy is more effective in achieving endoscopic remission and is as safe in terms of adverse events.
• Male or female participants aged 18 to 70 years at baseline (week 0).
• Active Crohn's Disease: Participants must have active Crohn's disease at baseline, defined as: CDAI \> 150 and Endoscopic activity with SES-CD \> 6, or SES-CD \> 4 (for isolated ileal disease), excluding the contribution of the stricture component (Excluding the stricture component ensures recruitment of patients with a better chance of improvement, given the primary endpoint is endoscopic remission), and at least one of the following: CRP \> 10 mg/L (upper limit of normal on local assay), Fecal calprotectin (FC) \> 250 μg/g, active disease confirmed by imaging.
• Prior Ustekinumab Treatment: Participants must have had primary non-response or secondary loss of response to TNFi, and have undergone at least 16-24 weeks of standard-dose ustekinumab treatment, but still have active CD.
• Consent and Compliance: Participants must be capable and willing to provide written informed consent and comply with the requirements of the study protocol.
• General Health: The principal investigator (or designee) must determine that the participant is in good general health based on medical history, laboratory test results, physical examination, chest X-ray (CXR), and 12-lead electrocardiogram (ECG) obtained during the screening period.