Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 18 and up

Guselkumab in Crohn's Disease: Optimising Care for Real-World Patients (OPTIM Study A)

Official title: Optimal Care With Guselkumab In Crohn's Disease

Run by Groupe d'Etude Therapeutique des Affections Inflammatoires Digestives · NCT07616687 · Data updated 2026-11-12

This study tests whether guselkumab can help adults with Crohn's disease, including those who have had prior therapies or partial responses, when used in real-world clinical settings.

More Crohn Disease (CD) trials

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment210 (estimated)
SponsorGroupe d'Etude Therapeutique des Affections Inflammatoires Digestives
Academic / other
Drugs / interventionsguselkumab, ustekinumab
Locations1 site (Amiens)
StatusRecruiting
StartedJune 18, 2026
Main results expectedMarch 15, 2029
Study endsMarch 15, 2029
Registry record updatedJune 30, 2026
Trial IDNCT07616687 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with Crohn's disease, with active disease and either naïve to guselkumab or previously exposed to advanced therapy, eligible for guselkumab and without contraindications.

Probably not a fit

Patients with ostomy, pregnant or breastfeeding status, perianal-dominant disease, or those with contraindications to guselkumab may not benefit.

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

What this trial studies

OPTIM Study A is a prospective, open-label, multicenter interventional trial evaluating the one-year real-world effectiveness of guselkumab in adults with Crohn's disease. The study also examines whether increasing guselkumab dosing from 100 mg every 8 weeks to 200 mg every 4 weeks benefits patients with loss of response, and whether intensified 200 mg q4w maintenance helps primary non-responders after induction. Primary and secondary outcomes focus on response, remission, and factors associated with the effectiveness of intensification. Eligible participants include adults with active Crohn's disease, with or without prior advanced therapy, who meet safety criteria and have active disease confirmed by objective measures. The trial is led by the Groupe d'Etude Therapeutique des Affections Inflammatoires Digestives and conducted at multiple centers, including Chu Amiens Picardie in Amiens.

Why it matters

Potential benefit: If successful, guselkumab intensification could offer improved disease control and longer-lasting remission for patients with Crohn's disease who do not maintain response on standard therapy.

How similar studies have gone: Previous biologic dose adjustment approaches in Crohn's disease have shown benefits in maintaining response; this study evaluates real-world effectiveness of guselkumab intensification.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* \- Patients with a diagnosis of CD according to ECCO guidelines,
* 18 years of age or older at the time of informed consent,
* Absence of contraindication to guselkumab,
* Active disease according to PRO2 (abdominal pain \> 1 or stool frequency \> 3), and faecal calprotectin \> 250 ug/g,
* Objective active disease documented within ≤ 2 months by endoscopy or by MRI when not contraindicated, orby IUS),
* Not currently participating in any interventional research.
* Patient naïve or exposed to one or more advanced therapy, in accordance with the approved indication for guselkumab in Crohn's disease.
* Females of childbearing potential must have a negative serum pregnancy test at the baseline Visit.

Exclusion Criteria:

* \- Patient under legal protection,
* Previous exposure to an anti-IL23
* Combination of advanced therapy with GUS,
* Patient with ostomy,
* Pregnant or breastfeeding woman,
* Patient with perianal CD predominant disease.
* Active clinically significant infection or HIV, Hep B, Hep C, or active tuberculosis

Where it's running

  • Chu Amiens Picardie
    Amiens, France
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.