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Taking people in GreecePhase 3

Compares JNJ-78934804 with guselkumab in ulcerative colitis

Tests JNJ-78934804 against guselkumab in adults with moderately to severely active ulcerative colitis.

Plain-language title generated from the registry record
Registry title: A Study of JNJ-78934804 in Participants With Moderately to Severely Active Ulcerative Colitis

Key facts

Where
Athens, Heraklion, Ioannina, and Piraeus, GreeceSee the 6 sites
Phase
Phase 3

Where in Greece

  • Evangelismos S AAthens, GreeceTaking people
  • General Hospital Of Athens Korgialenio Benakio H R CAthens, GreeceTaking people
  • Thoracic General Hospital of Athens "I Sotiria"Athens, GreeceTaking people
  • University General Hospital of HeraklionHeraklion, GreeceTaking people
  • University General Hospital of IoanninaIoannina, GreeceTaking people
  • Geniko Nosokomeio Peiraia TzaneioPiraeus, GreeceTaking people

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Trial details

Who runs it
Janssen Research & Development, LLC
Trial code
NCT07577856EU 2026-525923-26-00
Record updated
3 November 2026
Original description
The purpose of this study is to assess how well JNJ-78934804 works (efficacy) and how safe it is (safety) as compared to guselkumab at Week 48 in participants with moderately to severely active ulcerative colitis (UC, a chronic disease of the large intestine in which the lining of the colon becomes inflamed and develops ulcers).Read full original descriptionShow less

78934804UCO3001: 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 Ulcerative Colitis

The purpose of this study is to assess how well JNJ-78934804 works (efficacy) and how safe it is (safety) as compared to guselkumab at Week 48 in participants with moderately to severely active ulcerative colitis (UC, a chronic disease of the large intestine in which the lining of the colon becomes inflamed and develops ulcers).

Inclusion: Diagnosis of ulcerative colitis (UC) established at least 12 weeks before screening including both endoscopic evidence and a histopathology report consistent with a diagnosis of UC; Moderately to severely active UC defined as baseline (Week 0) modified Mayo score of 5 to 9, inclusive, using the Mayo endoscopy subscore obtained during central review of the screening video endoscopy; An endoscopy subscore >=2 as obtained during central review of the screening video endoscopy; Have had an inadequate initial response, loss of response, or intolerance to previous approved systemic therapies.

Exclusion: Has previously demonstrated inadequate initial response, loss of response, allergy, hypersensitivity or intolerance to guselkumab or to golimumab; Has a history of or ongoing chronic or recurrent infectious disease; Isolated proctitis (UC limited to the rectum only or to less than [<] 20 centimeter [cm] from the anal verge) as determined during central review of the screening video endoscopy OR Has a diagnosis of isolated proctitis; Diagnosis of indeterminate colitis, microscopic colitis, ischemic colitis, Crohn's colitis or any findings suggestive of CD; Is a participant who is pregnant, breastfeeding, or planning to become pregnant, or plans to father a child, while enrolled in this study or within 6 months after the last dose of study intervention.

ClinicalTrials.gov NCT07577856 · EU CTIS 2026-525923-26-00