Understanding Intestinal Fibrosis in Ulcerative Colitis

Unravelling Intestinal Fibrosis in Ulcerative Colitis

PHASE2; PHASE3 · Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) · NCT06604273

This study is testing how well the JAK inhibitor filgotinib works for people with Ulcerative Colitis by looking at changes in their intestinal scarring using special imaging.

Quick facts

PhasePHASE2; PHASE3
Study typeInterventional
Enrollment10 (estimated)
Ages18 Years and up
SexAll
SponsorAcademisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA) (other)
Drugs / interventionsfilgotinib
Locations1 site (Amsterdam, North Holland)
Trial IDNCT06604273 on ClinicalTrials.gov

What this trial studies

This study aims to identify fibrotic cellular pathways in patients with Ulcerative Colitis (UC) who are being treated with the JAK inhibitor filgotinib. It will also utilize FAPi-PET/CT imaging to detect and monitor fibrosis in these patients. The study is interventional and includes both Phase 2 and Phase 3 components to assess the effectiveness of the treatment. Participants will undergo imaging and assessments to evaluate their condition and response to therapy.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older with a confirmed diagnosis of active Ulcerative Colitis.

Not a fit: Patients who are pregnant, unable to provide informed consent, or have colorectal carcinoma or high-grade dysplasia may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved understanding and treatment options for patients suffering from Ulcerative Colitis and related fibrosis.

How similar studies have performed: Other studies have explored similar approaches in inflammatory bowel disease, but this specific focus on fibrosis and the use of FAPi-PET/CT imaging is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults with confirmed diagnosis of UC - Group 1 criterion: ≥18 years of age regardless of gender
* Group 2 criterion: ≥30 years of age for males and ≥40 years of age for females
* Active disease confirmed by endoscopy (endoscopic Mayo score ≥ 2)
* Indication to start treatment with filgotinib

AND one of the following criteria:

* Active disease confirmed by intestinal ultrasound (BWT \> 3 mm in at least one bowel segment and at least one other pathological IUS parameter) or
* Increased CRP (\>5 mg/L) and/or fecal calprotectin levels (\>250 mg/kg)

Exclusion Criteria:

* Pregnancy
* Unable to provide informed consent
* Colorectal carcinoma or high-grade dysplasia

Where this trial is running

Amsterdam, North Holland

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Ulcerative Colitis, Inflammatory Bowel Disease, Fibroblast Activation Protein Inhibitor, PET CT, FAPI, IBD, Ulcerative colitis, Filgotinib

Last reviewed 2026-05-15 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.