Clinical trial Recruiting at 285 sites Phase 3 Interventional Ages 18 and up

JNJ-78934804 in Crohn’s disease: a comparison to guselkumab for moderate to severe cases

Official title: A Phase 3, Randomized, Double-blind, and Active-controlled Multicenter Study to Evaluate the Efficacy and Safety of JNJ-78934804 in Participants With Moderately to Severely Active Crohn's Disease

Run by Janssen Research & Development, LLC · NCT07577843 · Data updated 2026-11-12

This trial tests whether JNJ-78934804 works as well as guselkumab for adults with moderately to severely active Crohn’s disease over 48 weeks.

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment460 (estimated)
SponsorJanssen Research & Development, LLC
Industry-sponsored
Drugs / interventionsguselkumab
Locations287 sites (Scottsdale, Arizona and 286 other locations)
StatusRecruiting
StartedMay 22, 2026
Main results expectedJune 12, 2028
Study endsJuly 12, 2030
Registry record updatedNovember 3, 2026
Trial IDNCT07577843 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults with moderately to severely active Crohn’s disease, confirmed endoscopically and histopathologically, who have not adequately responded to prior systemic therapies.

Probably not a fit

Patients with Crohn’s disease who do not respond to JNJ-78934804 or guselkumab, or who experience safety concerns, 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

This is a phase 3 interventional study assessing the efficacy and safety of JNJ-78934804 versus guselkumab in participants with moderately to severely active Crohn’s disease. Eligible adults have a confirmed Crohn’s diagnosis and a CDAI score between 220 and 450, with active ileal and/or colonic disease. Participants must have had an inadequate response or intolerance to prior systemic therapies. The study compares two biologic approaches, using centralized endoscopic assessments to confirm disease activity, with treatment over a 48-week period. Locations include several sites in Arizona and California, led by Janssen Research & Development.

Why it matters

Potential benefit: If successful, patients may experience improved disease control and safety with JNJ-78934804 compared to guselkumab.

How similar studies have gone: Earlier studies with similar biologic approaches have shown benefit in Crohn’s, but direct comparison data against guselkumab is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion criteria:

* Have a diagnosis of Crohn's disease (CD) or fistulizing CD established greater than or equal to (\>=) 12 weeks before screening including both endoscopic evidence and a histopathology report consistent with a diagnosis of CD
* Have moderately to severely active CD based on crohn's disease activity index (CDAI) criteria defined as a baseline CDAI score \>= 220 but less than or equal to (\<=) 450 and either: a. Mean daily stool frequency (SF) count \>= 4.0, based on the unweighted CDAI component of the number of liquid or very soft stools or b. Mean daily AP score \>= 2.0, based on the unweighted CDAI component of abdominal pain (AP)
* Have moderately to severely active ileal and/or colonic CD as assessed by central review of the screening video ileocolonoscopy based on simple endoscopic score for crohn's disease (SES-CD) criteria
* Have had an inadequate initial response, loss of response, or intolerance to previously approved systemic therapies

Exclusion criteria:

* Diagnosis of indeterminate colitis, microscopic colitis, ischemic colitis, ulcerative colitis (UC) or clinical findings highly suggestive of UC
* Complications of CD such as symptomatic bowel strictures or stenoses, or any other manifestation that may require intestinal surgery while enrolled in the study
* Presence of draining (that is, functioning) stoma or ostomy
* Has a history of short bowel syndrome, is missing greater than (\>) 2 of the 5 ileocolonic segments, or has any other medical condition that could preclude or confound the ability to use efficacy assessment tools (such as CDAI) to assess response to study intervention
* Currently has or is suspected of having an abscess

Where it's running

  • Mayo Clinic
    Scottsdale, Arizona, United States
    Recruiting
  • GIA Sun City
    Sun City, Arizona, United States
    Recruiting
  • Clinnova Research
    Anaheim, California, United States
    Recruiting
  • Gastro SB Clinic
    Chula Vista, California, United States
    Recruiting
  • United Medical Doctors
    Los Alamitos, California, United States
    Recruiting
  • Medical Associates Research Group, Inc.
    San Diego, California, United States
    Recruiting
Show 44 more locations
  • Peak Gastroenterology Associates
    Colorado Springs, Colorado, United States
    Recruiting
  • Florida Research Center Inc.
    Lakewood Rch, Florida, United States
    Recruiting
  • Sanchez Clinical Research, Inc
    Miami, Florida, United States
    Recruiting
  • Endoscopic Research Inc
    Orlando, Florida, United States
    Recruiting
  • GCP Clinical Research
    Tampa, Florida, United States
    Recruiting
  • Atlanta Gastroenterology Specialists
    Suwanee, Georgia, United States
    Recruiting
  • Tri-State Gastroenterology Assoc
    Crestview Hills, Kentucky, United States
    Recruiting
  • Gastroenterology Clinic of Acadiana
    Lafayette, Louisiana, United States
    Recruiting
  • GIA Metairie
    Metairie, Louisiana, United States
    Recruiting
  • GIA Kansas City
    Lee's Summit, Missouri, United States
    Recruiting
  • New York Gastroenterology Associates
    New York, New York, United States
    Recruiting
  • GIA Rochester
    Rochester, New York, United States
    Recruiting
  • University of North Carolina Hospital
    Chapel Hill, North Carolina, United States
    Recruiting
  • Great Lakes Gastroenterology Research, LLC
    Mentor, Ohio, United States
    Recruiting
  • Digestive Disease Specialists Inc
    Oklahoma City, Oklahoma, United States
    Recruiting
  • The Oregon Clinic
    Portland, Oregon, United States
    Recruiting
  • Michigan Center of Medical Research
    Farmington Hill, Pennsylvania, United States
    Recruiting
  • Palmetto Primary and Specialty Care Physicians, Charleston
    Summerville, South Carolina, United States
    Recruiting
  • Gastro One
    Cordova, Tennessee, United States
    Recruiting
  • Tyler Research Institute, LLC
    Tyler, Texas, United States
    Recruiting
  • GIA Webster
    Webster, Texas, United States
    Recruiting
  • GIA Richmond
    Richmond, Virginia, United States
    Recruiting
  • GI Alliance Tacoma
    Tacoma, Washington, United States
    Recruiting
  • Sanatorio Duarte Quiroz
    Córdoba, Argentina
    Recruiting
  • Gedyt
    Famailla, Argentina
    Recruiting
  • Globalpsy
    La Plata, Argentina
    Recruiting
  • Higea
    Mendoza, Argentina
    Recruiting
  • Cer Instituto Medico
    Quilmes, Argentina
    Recruiting
  • Hospital Provincial del Centenario
    Rosario, Argentina
    Recruiting
  • Banksia Trials SA
    Adelaide, Australia
    Recruiting
  • Royal Prince Alfred Hospital
    Camperdown, Australia
    Recruiting
  • Monash Medical Centre
    Clayton, Australia
    Recruiting
  • SA Gastrointestinal Services IBD SA
    Kurraba Point, Australia
    Recruiting
  • Macquarie University
    Macquarie Island, Australia
    Recruiting
  • Fiona Stanley Hospital
    Murdoch, Australia
    Recruiting
  • John Hunter Hospital
    New Lambton, Australia
    Recruiting
  • Mater Misericordiae Hospital
    South Brisbane, Australia
    Recruiting
  • The Melbourne Gut Clinic Epworth Hospital
    West Melbourne, Australia
    Recruiting
  • Kepler Universitatsklinikum GmbH
    Linz, Austria
    Recruiting
  • LKH - Universitätsklinikum der PMU Salzburg
    Salzburg, Austria
    Recruiting
  • Krankenhaus der Barmherzigen Brüder
    Vienna, Austria
    Recruiting
  • Klinikum Wels Grieskirchen
    Wels, Austria
    Recruiting
  • O L V Ziekenhuis
    Aalst, Belgium
    Recruiting
  • Cliniques Universitaires Saint Luc
    Brussel (Bruxelles), Belgium
    Recruiting

+237 more sites. See ClinicalTrials.gov for the full list.

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.