Switching to subcutaneous infliximab for IBD treatment

Subcutaneous Infliximab After A Previous Intravenous Dose Optimization

PHASE4 · Belgian Inflammatory Bowel Disease Research and Development (BIRD) VZW · NCT06113913

This study is testing if switching people with inflammatory bowel disease from an intravenous form of infliximab to a subcutaneous version, given weekly or bi-weekly, can lead to better health results.

Quick facts

PhasePHASE4
Study typeInterventional
Enrollment275 (estimated)
Ages18 Years and up
SexAll
SponsorBelgian Inflammatory Bowel Disease Research and Development (BIRD) VZW (other)
Drugs / interventionsinfliximab, inflixmab
Locations15 sites (Ghent, Oost-Vlaanderen and 14 other locations)
Trial IDNCT06113913 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of switching patients with inflammatory bowel disease (IBD) from intravenous infliximab to subcutaneous infliximab. Participants will be randomized to receive either a weekly or bi-weekly subcutaneous dose after previously optimized intravenous treatment. The study aims to determine if the weekly dosing leads to better clinical outcomes compared to the standard bi-weekly administration. Monitoring will focus on achieving clinical and biological remission throughout the trial.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with a confirmed diagnosis of Crohn's disease, ulcerative colitis, or IBD unclassified who are in clinical remission without steroid use.

Not a fit: Patients who are not in remission or those who have not previously received intravenous infliximab may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could improve treatment outcomes for patients with IBD by optimizing the administration of infliximab.

How similar studies have performed: Previous studies have shown promising results with subcutaneous infliximab, but this specific approach of switching from intravenous to subcutaneous dosing is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Voluntary written informed consent of the participant or their legally authorized representative has been obtained prior to any Screening procedures.
* Patients with a previously documented CD, UC, IBDU diagnosis confirmed by clinical, endoscopic, histological, and/or radiological criteria
* Males and females ≥18 years old.
* Patients must be in steroid-free clinical remission at Screening defined as a rectal bleeding score of 0 and a stool frequency score of ≤1 for patients with UC / IBDU, or an average daily abdominal pain score ≤1 and a liquid stool frequency score ≤2.8 for patients with CD (based on the 3 days before the screening visit, excluding the day of or the day before an eventual endoscopy with bowel preparation) and this without the need for any type of steroids in the previous eight weeks.
* Patients must be in biological remission at screening defined as a CRP \<10 mg/L and a fecal calprotectin \<250 µg/g.
* Patients receiving IV infliximab for at least 26 consecutive weeks.
* Patients receiving a stable IV infliximab dosing schedule for at least 20 weeks.
* Patients receiving an average IV infliximab dose per 8 weeks based on the two most recent IV administration of more than 8 mg/kg, but not more than 22 mg/kg
* Patients who speak and read fluently Dutch, French or English.

Exclusion Criteria:

* Male or female ≤ 18 years
* Patients with an ileorectal anastomosis, an ileal pouch-anal anastomosis or an ostomy
* Patients participating in an interventional clinical trial with an Investigational Medicinal Product (IMP) or device
* Patients previously treated with SC infliximab
* Patients with active perianal fistulizing disease
* Patients with microscopic colitis

Where this trial is running

Ghent, Oost-Vlaanderen and 14 other locations

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: Inflammatory Bowel Diseases, Crohn Disease, Ulcerative Colitis, remission, infliximab

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.