Clinical trial Recruiting at 1 site Observational Ages 18 to 70

First-line biologic choice for moderate-to-severe ulcerative colitis: infliximab versus vedolizumab

Official title: Selection and Efficacy-Influencing Factors of First-Line Biologic Agents in Moderate-to-Severe Ulcerative Colitis: A Prospective, Multi-Center, Real-World Study

Run by Xijing Hospital of Digestive Diseases · NCT06962020 · Data updated 2026-11-12

This will test whether infliximab or vedolizumab works better as the first biologic for adults aged 18–70 with moderate-to-severe ulcerative colitis.

Quick facts

Study typeObservational
Ages18 Years to 70 Years
SexAll
Enrollment400 (estimated)
SponsorXijing Hospital of Digestive Diseases
Academic / other
Drugs / interventionsradiation
Locations1 site (Shanxi, Xi'an)
StatusRecruiting
StartedApril 30, 2025
Main results expectedNovember 20, 2025
Study endsNovember 20, 2025
Registry record updatedJuly 3, 2025
Trial IDNCT06962020 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–70 years old with a confirmed diagnosis of moderate-to-severe ulcerative colitis by Mayo score, without concurrent treatments that would affect biologic efficacy and with adequate liver and kidney function are ideal candidates.

Probably not a fit

Patients with hemodynamic instability, significant liver or kidney injury, known allergy to infliximab or vedolizumab, active gastrointestinal malignancy, or other uncontrolled serious systemic diseases are unlikely to be eligible or benefit from participation.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a prospective, multicenter real-world observational study following adults with moderate-to-severe ulcerative colitis who start either infliximab or vedolizumab as first-line biologic therapy. Investigators will record clinical outcomes using standard measures (including Mayo score), track potential confounders, and compare effectiveness and factors that influence response between the two drugs. Patients with interfering treatments or major organ dysfunction are excluded to reduce bias. The goal is to describe real-world comparative effectiveness and identify characteristics linked to better response for each agent.

Why it matters

Potential benefit: If successful, the results could help doctors choose the biologic that is more likely to control symptoms and improve outcomes for similar patients.

How similar studies have gone: Head-to-head randomized comparisons are limited, though observational studies and indirect comparisons suggest infliximab often produces faster response while vedolizumab may have a different safety and long-term effectiveness profile.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age range of 18-70 years old, gender not limited;
* According to international guidelines and consensus, patients with ulcerative colitis should be diagnosed to exclude radiation enteritis, infectious enteritis, tumor related diseases, etc;
* Patients assessed as moderate to severe ulcerative colitis based on the Mayo score;
* During the follow-up period, no relevant treatments (drugs and surgery) were used that could affect the assessment of the efficacy of biologics

Exclusion Criteria:

* Patients with hemodynamic instability;
* Patients with obvious liver and kidney function injury: bilirubin, aminotransferase (ALT, AST) exceeded the upper limit of normal by 2 times; eGFR\<60ml/min or dialysis patients;
* Patients allergic to IFX or VDZ;
* Patients whose primary disease was gastrointestinal malignancy;
* Patients currently suffering from serious or uncontrolled underlying diseases of the blood, digestive tract, metabolism, endocrine, lung, heart, nervous system, mental system, etc.;
* Female patients during pregnancy and breastfeeding (including patients with reproductive needs);
* Patients with current infection with infectious diseases (hepatitis B, hepatitis C, syphilis, AIDS, tuberculosis, etc.);
* Patients who cannot cooperate with regular follow-up and review of laboratory indicators;
* Any other circumstances which, in the opinion of the investigator, would render the subject unfit for study inclusion.

Where it's running

  • Xijing Hospital of Digestive Diseases
    Shanxi, Xi'an, China
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.