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
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 460 (estimated) |
| Sponsor | Janssen Research & Development, LLC Industry-sponsored |
| Drugs / interventions | guselkumab |
| Locations | 287 sites (Scottsdale, Arizona and 286 other locations) |
| Status | Recruiting |
| Started | May 22, 2026 |
| Main results expected | June 12, 2028 |
| Study ends | July 12, 2030 |
| Registry record updated | November 3, 2026 |
| Trial ID | NCT07577843 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
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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
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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
- Study coordinator: Study Contact
- Email: Participate-In-This-Study1@its.jnj.com
- Phone: 844-434-4210
Similar studies
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.