Comparison of the Efficacy of Different Biologic Agents in Preventing Postoperative Endoscopic Recurrence of Crohn's Disease
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Infliximab, Adalimumab, Vedolizumab, Ustekinumab (UST).
- Who it may be relevant to
- Registry conditions: Inflamatory Bowel Disease, Crohn Disease (CD). Basic parameters: 18 years — 85 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- China
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
This retrospective cohort study aims to compare the efficacy of different biologics in preventing postoperative endoscopic recurrence in Crohn's disease (CD). It plans to include 198 adult patients who underwent bowel resection and initiated prophylactic biologic therapy between January 1, 2015, and April 1, 2025. Patients will be divided into anti-TNF (e.g., infliximab, adalimumab) and non-anti-TNF (e.g., vedolizumab, ustekinumab) groups based on the biologic started within 6 weeks post-surgery. The primary outcome is endoscopic recurrence (Rutgeerts score ≥ i2) at 6-12 months postoperatively. Secondary outcomes include severe endoscopic recurrence, clinical recurrence, recurrence at different anastomotic sites, CD-related rehospitalization, reoperation, drug persistence, the POCER postoperative endoscopic index, and histopathological changes in the bowel and mesenteric fat. Subgroup analyses will explore treatment effects by recurrence risk stratification and resection extent. Using retrospective data collection, the study will apply multivariate regression and survival analysis to provide real-world evidence for optimizing postoperative biologic selection.
Detailed description
This study is a retrospective cohort study aiming to compare the efficacy of different biologics in preventing endoscopic recurrence after surgery for Crohn's disease (CD). It plans to include 198 adult CD patients who underwent intestinal resection and initiated prophylactic biologic therapy between January 1, 2015, and April 1, 2025. Patients will be divided into an anti-TNF group (e.g., infliximab, adalimumab) and a non-anti-TNF group (e.g., vedolizumab, ustekinumab) based on the biologic agent used within six weeks post-surgery. The primary outcome is the rate of endoscopic recurrence (Rutgeerts score ≥ i2) at 6-12 months postoperatively. Secondary outcomes include the rate of severe endoscopic recurrence, clinical recurrence, recurrence at different anastomotic sites, CD-related rehospitalization, reoperation, drug persistence, the POCER postoperative endoscopic index, and pathological changes in the intestinal tissue and mesenteric fat. Subgroup analyses will be conducted to explore differences in efficacy across varying levels of recurrence risk and resection extent. Through retrospective data collection and statistical analyses including multivariate regression and survival analysis, this study aims to provide real-world evidence to optimize the selection of postoperative biologic therapy in clinical practice.
Interventions
- Biological Infliximab
Infliximab was used as postoperative prophylactic biologic therapy for Crohn's disease according to routine clinical practice. The recommended regimen was 5 mg/kg intravenously at weeks 0, 2, and 6, followed by maintenance treatment every 8 weeks. - Biological Adalimumab
Adalimumab was used as postoperative prophylactic biologic therapy for Crohn's disease according to routine clinical practice. The recommended regimen was 160 mg subcutaneously at week 0, 80 mg at week 2, and 40 mg every 2 weeks from week 4 onward. - Biological Vedolizumab
Vedolizumab was used as postoperative prophylactic biologic therapy for Crohn's disease according to routine clinical practice. The recommended regimen was 300 mg intravenously at weeks 0, 2, and 6, followed by maintenance treatment every 8 weeks. - Biological Ustekinumab (UST)
Ustekinumab was used as postoperative prophylactic biologic therapy for Crohn's disease according to routine clinical practice. The recommended regimen included a weight-based intravenous induction dose, followed by 90 mg subcutaneously every 8 weeks.
Primary outcome measures
- Endoscopic recurrence rate [Time frame: 6 to 12 months after surgery]
Secondary outcome measures (6)
- Severe endoscopic recurrence rate [Time frame: 6 to 12 months after surgery]
- Clinical recurrence rate [Time frame: Up to 5 years after surgery]
- Long-term endoscopic recurrence rate [Time frame: 3 and 5 years after surgery]
- Crohn's disease-related rehospitalization rate [Time frame: Up to 5 years after surgery]
- Crohn's disease-related reoperation rate [Time frame: Up to 5 years after surgery]
- Drug persistence [Time frame: Up to 5 years after treatment initiation]
Eligibility criteria
Inclusion criteria
- Age ≥18 years.
- Diagnosis of Crohn's disease according to the European Crohn's and Colitis Organisation (ECCO) guideline criteria, based on clinical, laboratory, endoscopic, radiologic, and histopathologic findings.
- Underwent Crohn's disease-related intestinal resection, including ileocolonic resection, segmental small bowel resection, or segmental colonic resection.
- Initiated postoperative prophylactic biologic therapy within 6 weeks after surgery.
- Maintained postoperative prophylactic biologic therapy for at least 3 to 6 months.
- Completed at least one evaluable postoperative ileocolonoscopy within 6 to 12 months after surgery for assessment of the Rutgeerts score, or had available clinical, radiologic, ultrasonographic, or laboratory data for evaluation of clinical recurrence.
Exclusion criteria
- Diagnosis of other intestinal diseases, including intestinal Behçet's disease, ulcerative colitis, intestinal tuberculosis, or intestinal malignancy.
- Intestinal surgery mainly performed for non-IBD conditions, such as intestinal malignancy.
- No postoperative endoscopic evaluation within 6 to 12 months after surgery, or endoscopic quality insufficient for Rutgeerts score assessment, and lack of adequate clinical, radiologic, ultrasonographic, or laboratory data for recurrence assessment.
- Irregular use of postoperative prophylactic therapy due to severe comorbidities, serious infection, or other reasons, making treatment efficacy difficult to evaluate.
- Other conditions considered by the investigators to be inappropriate for inclusion.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Cohort
Study locations
China · 1 center
- The Tenth People's Hospital of Shanghai — Shanghai
Identifiers
NCT: NCT07694674 · SHSY-IEC-6.0/26K14/P01