New hope for ulcerative colitis: experimental drug JNJ-78934804 enters final testing phase
NCT ID NCT07577856
First seen Jun 24, 2026 · Last updated Aug 28, 2026 · Updated 6 times
Summary
This phase 3 trial tests whether the experimental drug JNJ-78934804 can help people with moderate to severe ulcerative colitis achieve remission better than the existing drug guselkumab. About 644 participants will receive either the new drug or guselkumab, and researchers will check at 48 weeks how many have no symptoms and healed gut lining. The study is currently recruiting.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- JNJ-78934804 (an experimental drug) compared to guselkumab (TREMFYA)
- What this could lead to
- If successful, this could provide a new treatment option for people with moderate to severe ulcerative colitis, potentially helping more patients achieve remission.
- What could go wrong
- This is a phase 3 trial, but the experimental drug is still unproven. It may not work better than the existing drug guselkumab, and side effects are possible.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
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About 644 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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Oct 2030
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion criteria: * 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 criteria: * 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 * Has a history of or ongoing chronic or recurrent infectious disease * Has previously demonstrated inadequate initial response, loss of response, allergy, hypersensitivity or intolerance to guselkumab or to golimumab * 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
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Colitis ulcerative are added.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
170 sites in 26 countries. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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AZ Maria Middelares
RECRUITINGGhent, 9000, Belgium
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AZ Sint-Lucas
RECRUITINGBruges, 8310, Belgium
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Aichi Medical University Hospital
RECRUITINGNagakute, 480-1195, Japan
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Alesund sjukehus
RECRUITINGÅlesund, 6017, Norway
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Antalya Training And Research Hospital
RECRUITINGAntalya, 07100, Turkey (Türkiye)
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Asan Medical Center
RECRUITINGSeoul, 05505, South Korea
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Asian Institute Of Gastroenterology
RECRUITINGHyderabad, 500032, India
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Assuta Medical center
RECRUITINGAshdod, 7747629, Israel
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Atlanta Gastroenterology Specialists
RECRUITINGSuwanee, Georgia, 30024, United States
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BR Trials
RECRUITINGSão Paulo, 01236 030, Brazil
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Banksia Trials SA
RECRUITINGAdelaide, 5000, Australia
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Barrie GI Associates
RECRUITINGBarrie, Ontario, L4M 7G1, Canada
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Beijing Friendship Hospital Capital Medical University
RECRUITINGBeijing, 100050, China
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Bezmialem University Medical Faculty
RECRUITINGIstanbul, 34093, Turkey (Türkiye)
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Bnai Zion Medical Center
RECRUITINGHaifa, 60910, Israel
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CDC - Centro Digestivo de Curitiba
RECRUITINGCuritiba, 80430 180, Brazil
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CHU de Lille Hopital Claude Huriez
RECRUITINGLille, 59037, France
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CHU de Nantes hotel Dieu
RECRUITINGNantes, 44000, France
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CHU de Reims
RECRUITINGReims, 51100, France
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CHUM - Centre hospitalier universitaire de Montreal
RECRUITINGMontreal, Quebec, H2X 0C1, Canada
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Center Hospital of the National Center for Global Health and Medicine
RECRUITINGShinjuku Ku, 162 8655, Japan
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Centrum Medyczne Medis ManerMed Sp Z O O
RECRUITINGBydgoszcz, 85 229, Poland
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Centrum Medyczne Medyk
RECRUITINGRzeszów, 35-326, Poland
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Centrum Medyczne Promed
RECRUITINGKrakow, 31-513, Poland
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Changzhou No 2 Peoples Hospital
RECRUITINGChangzhou, 213000, China
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Charlton Digestive Disease Centre
RECRUITINGHamilton, Ontario, L8N1Y2, Canada
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Chongqing General Hospital
RECRUITINGChongqing, 400014, China
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Cliniq s.r.o.
RECRUITINGBratislava, 811 09, Slovakia
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Clinique IMD
RECRUITINGMontreal, Quebec, H3H1E3, Canada
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Clinnova Research
RECRUITINGAnaheim, California, 92805, United States
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Diagnostic Consultative Center Neoclinic EAD
RECRUITINGSofia, 1408, Bulgaria
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Digestive Disease Specialists Inc
RECRUITINGOklahoma City, Oklahoma, 73114, United States
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EMC Instytut Medyczny S A Penta Hospitals Przychodnie
RECRUITINGWroclaw, 54-239, Poland
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ENDOMED s.r.o
RECRUITINGKošice, 040 13, Slovakia
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ETG Zamosc
RECRUITINGZamość, 22 400, Poland
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Eugastro GmbH
RECRUITINGLeipzig, 04103, Germany
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FNsP F. D. Roosevelta Banska Bystrica
RECRUITINGBanská Bystrica, 975 17, Slovakia
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Fakultni Thomayerova nemocnice
RECRUITINGPrague, 14000, Czechia
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Fiona Stanley Hospital
RECRUITINGMurdoch, 6150, Australia
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Florida Research Center Inc.
RECRUITINGLakewood Rch, Florida, 34211, United States
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GASTRO I. s.r.o.
RECRUITINGPrešov, 080 01, Slovakia
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GCP Clinical Research
RECRUITINGTampa, Florida, 33609, United States
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GEDYT
RECRUITINGAAI, C1425BGC, Argentina
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GI Alliance Tacoma
RECRUITINGTacoma, Washington, 98405, United States
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GI Research Institute (G.I.R.I.)
RECRUITINGVancouver, British Columbia, V6Z 2K5, Canada
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Galilee Medical Center
RECRUITINGNahariya, 2210001, Israel
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Gastro LM s.r.o.
RECRUITINGPrešov, 080 01, Slovakia
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Gastro One
RECRUITINGCordova, Tennessee, 38018, United States
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Gastro SB Clinic
RECRUITINGChula Vista, California, 91910, United States
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Gastroenterologie, s.r.o., Hradec Kralove
RECRUITINGHradec Kralova, 500 02, Czechia
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Gastroenterology Clinic of Acadiana
RECRUITINGLafayette, Louisiana, 70503, United States
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Gastroenterology and Internal Medicine Research Institute (GIRI)
RECRUITINGEdmonton, Alberta, T5R 1W2, Canada
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Ghent University Hospital
RECRUITINGGhent, 9000, Belgium
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Globalpsy
RECRUITINGLa Plata, 1896, Argentina
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Great Lakes Gastroenterology Research, LLC
RECRUITINGMentor, Ohio, 44060, United States
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Gujarat Gastro and Vascular Hospital
RECRUITINGSurat, 395009, India
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HIGEA
RECRUITINGMendoza, M5500DPS, Argentina
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Hamamatsu University Hospital
RECRUITINGHamamatsu, 431-3192, Japan
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Hepato-gastroenterologie HK, s.r.o.
RECRUITINGHradec Králové, 500 12, Czechia
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Herlev Hospital
RECRUITINGHerlev, 2730, Denmark
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Hokkaido P.W.F.A.C. Sapporo-Kosei General Hospital
RECRUITINGSapporo, 060-0033, Japan
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Hosp. Gral. Univ. Dr. Balmis
RECRUITINGAlicante, 03010, Spain
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Hosp. Univ. Infanta Leonor
RECRUITINGMadrid, 28031, Spain
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Hospital Ampang
RECRUITINGAmpang, 68000, Malaysia
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Hospital De Clinicas De Porto Alegre
RECRUITINGPorto Alegre, 90035-903, Brazil
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Hospital Ernesto Dornelles
RECRUITINGPorto Alegre, 90160-092, Brazil
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Hospital Kuala Lumpur
RECRUITINGKuala Lumpur, 50586, Malaysia
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Hospital Sultanah Nur Zahirah
RECRUITINGKuala Terengganu, 20400, Malaysia
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Hospital das Clinicas da Faculdade de Medicina de Ribeirao Preto
RECRUITINGRibeirão Preto, 14051140, Brazil
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Huai'an 1st Hospital
RECRUITINGHuai'an, 223300, China
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Hvidovre Hospital
RECRUITINGHvidovre, 2650, Denmark
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INTEGRAL Pesquisa e Ensino
RECRUITINGVotuporanga, 15500-269, Brazil
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ISCARE a.s.
RECRUITINGPrague, 190 00, Czechia
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Imelda Bonheiden
RECRUITINGBonheiden, 2820, Belgium
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Inje University Haeundae Paik Hospital
RECRUITINGBusan, 48108, South Korea
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Instituto Medico De Alta Complejidad (IMAC)
RECRUITINGBuenos Aires, B1643CRO, Argentina
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Instituto de Investigaciones Clinicas Quilmes
RECRUITINGQuilmes, B1878GEG, Argentina
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Istanbul University Cerrahpasa Medical Faculty
RECRUITINGIstanbul, 34098, Turkey (Türkiye)
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Izmir Sehir Hastanesi
RECRUITINGIzmir, 35540, Turkey (Türkiye)
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John Hunter Hospital
RECRUITINGNew Lambton Heights, 2305, Australia
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KM Management spol. s r.o.
RECRUITINGNitra, 949 01, Slovakia
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Kagoshima IBD Gastroenterology Clinic
RECRUITINGKagoshima, 892-0843, Japan
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Kings College Hospital
RECRUITINGLondon, SE5 9RS, United Kingdom
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Kitasato University Kitasato Institute Hospital
RECRUITINGMinatoku, 108-8642, Japan
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Kocaeli University Medical Faculty
RECRUITINGKocaeli, 41001, Turkey (Türkiye)
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Krankenhaus Waldfriede Mitte
RECRUITINGBerlin, 14163, Germany
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Kumamoto University Hospital
RECRUITINGKumamoto, 860-8556, Japan
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Linkou Chang Gung Memorial Hospital
RECRUITINGTaoyuan, 333, Taiwan
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Lisie Hospital
RECRUITINGKochi, 682018, India
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London Digestive Disease Institute
RECRUITINGLondon, Ontario, N6K 1M6, Canada
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MHAT Sv. Karidad EAD
RECRUITINGPlovdiv, 4004, Bulgaria
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MR Medicina Reumatologica
RECRUITINGSan Fernando, B1646, Argentina
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Mater Misericordiae Hospital
RECRUITINGSouth Brisbane, 4101, Australia
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Matsuda Hospital
RECRUITINGHamamatsu, 432-8061, Japan
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Medical Associates Research Group, Inc.
RECRUITINGSan Diego, California, 92123, United States
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Medizinische Hochschule Hannover
RECRUITINGHanover, 30625, Germany
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Medrise Sp. z o.o.
RECRUITINGLublin, 20 582, Poland
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Meir Medical Center
RECRUITINGKfar Saba, 4428164, Israel
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Mersin University Medical Faculty
RECRUITINGMersin, 33343, Turkey (Türkiye)
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Michigan Center of Medical Research
RECRUITINGFarmington Hills, Michigan, 48334, United States
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Monash Medical Centre
RECRUITINGClayton, 3168, Australia
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Multiprofile Hospital for Active Treatment 'Tokuda Hospital Sofia'
RECRUITINGSofia, 1407, Bulgaria
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National Hospital Organization Mito Medical Center
RECRUITINGHigashi-Ibaraki, 311-3193, Japan
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National Hospital Organization Osaka National Hospital
RECRUITINGOsaka, 540-0006, Japan
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National Hospital Organization Shizuoka Medical Center
RECRUITINGShimizu, 411-8611, Japan
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Nemocnice Ceske Budejovice a s
RECRUITINGČeské Budějovice, 37001, Czechia
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New York Gastroenterology Associates
RECRUITINGNew York, New York, 10075, United States
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Ningbo medical center lihuili hospital
RECRUITINGNingbo, 315000, China
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Odense University Hospital
RECRUITINGOdense, 5000, Denmark
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Oita Red Cross Hospital
RECRUITINGŌita, 870-0033, Japan
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Osaka Metropolitan University Hospital
RECRUITINGOsaka, 545-8585, Japan
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Peak Gastroenterology Associates
RECRUITINGColorado Springs, Colorado, 80907, United States
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Peking University Third Hospital
RECRUITINGBeijing, 100191, China
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Pesquisare Saude
RECRUITINGSanto André, 09080-110, Brazil
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Rabin Medical Center
RECRUITINGPetah Tikva, 4941492, Israel
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Radboud Umcn
RECRUITINGNijmegen, 6525 GA, Netherlands
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Rambam Medical Center
RECRUITINGHaifa, 3109601, Israel
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Rocco And Nazato Servicos Medicos Ltda
RECRUITINGSão Paulo, 04077-020, Brazil
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Royal Prince Alfred Hospital
RECRUITINGCamperdown, 2050, Australia
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S. R. Kalla Memorial General Hospital
RECRUITINGJaipur, 302006, India
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SA Gastrointestinal Services
RECRUITINGKurralta Park, 5037, Australia
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SIDS Hospital & Research Centre
RECRUITINGSurat, 395002, India
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Saga University Hospital
RECRUITINGSaga, 849-8501, Japan
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Samsung Medical Center
RECRUITINGGangnam Gu, 06351, South Korea
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Sanchez Clinical Research, Inc
RECRUITINGMiami, Florida, 33157-6575, United States
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Sanko Universitesi Hastanesi
RECRUITINGGaziantep, 27090, Turkey (Türkiye)
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Sapporo Higashi Tokushukai Hospital
RECRUITINGSapporo, 065-0033, Japan
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Seoul National University Hospital
RECRUITINGSeoul, 03080, South Korea
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Shaare Zedek Medical Center
RECRUITINGJerusalem, 9103102, Israel
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Sheba Medical Center
RECRUITINGRamat Gan, 52621, Israel
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Sonomed Sp. z o.o.
RECRUITINGSzczecin, 71-685, Poland
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South Edmonton Gastroenterology Research Clinic
RECRUITINGEdmonton, Alberta, Code: T6K 4B2, Canada
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Southern Star Research Institute, LLC
RECRUITINGSan Antonio, Texas, 78229, United States
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St Georges Healthcare NHS Trust
RECRUITINGLondon, SW17 0QT, United Kingdom
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St. Olavs Hospital
RECRUITINGTrondheim, 7030, Norway
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Sultan Idris Shah Hospital
RECRUITINGKajang, 43000, Malaysia
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Sun Yat-sen University - The Sixth Affiliated Hospital Guangdong Gastrointestinal Hospital
RECRUITINGGuangzhou, 510655, China
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Sushruta Multispecialty Hospital and Research Centre
RECRUITINGHubballi, 580021, India
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Sykehuset Innlandet HF Gjøvik
RECRUITINGGjøvik, 2819, Norway
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Taipei Mackay Memorial Hospital
RECRUITINGTaipei, 10449, Taiwan
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Takano Hospital
RECRUITINGKumamoto, 862-0971, Japan
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Tel Aviv Sourasky Medical Center
RECRUITINGTel Aviv, 64239, Israel
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The Catholic University of Korea Daejeon St Mary's Hospital
RECRUITINGDaejeon, 34943, South Korea
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The First Affiliated Hospital Sun Yat sen University
RECRUITINGGuangzhou, 510080, China
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The Melbourne Gut Clinic Epworth Hospital
RECRUITINGEast Melbourne, 3002, Australia
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The Oregon Clinic
RECRUITINGPortland, Oregon, 97220, United States
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The Second Hospital of Hebei Medical University
RECRUITINGShijiazhuang, 050000, China
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Tokyo Metropolitan Bokutoh Hospital
RECRUITINGSumida Ku, 130 8575, Japan
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Toronto Immune and Digestive Health Institute Inc
RECRUITINGToronto, Ontario, M6A 3B4, Canada
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Tri-State Gastroenterology Assoc
RECRUITINGCrestview Hills, Kentucky, 41017, United States
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Tsujinaka Hospital Kashiwanoha
RECRUITINGKashiwa, 277-0871, Japan
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Twoja Przychodnia - Szczecinskie Centrum Medyczne
RECRUITINGSzczecin, 71-434, Poland
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Tyler Research Institute, LLC
RECRUITINGTyler, Texas, 75701, United States
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ULB Erasme Ziekenhuis
RECRUITINGBrussels, 1070, Belgium
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UZ Brussel
RECRUITINGBrussels, 1090, Belgium
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Uls Braga - Hosp. Braga
RECRUITINGBraga, 4710 243, Portugal
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Uls Santa Maria - Hosp. Santa Maria
RECRUITINGLisbon, 1649 028, Portugal
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United Medical Doctors
RECRUITINGLos Alamitos, California, 90720, United States
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Universitaetsklinikum Mannheim
RECRUITINGMannheim, 68167, Germany
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Universitaetsmedizin Rostock
RECRUITINGRostock, 18057, Germany
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Universitair Ziekenhuis Leuven
RECRUITINGLeuven, 3000, Belgium
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Universitatsklinikum Carl Gustav Carus Dresden
RECRUITINGDresden, 01307, Germany
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Universitatsklinikum Schleswig Holstein Kiel
RECRUITINGKiel, 24105, Germany
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Universitetssykehuset Nord-Norge HF
RECRUITINGTromsø, 9038, Norway
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University Malaya Medical Centre
RECRUITINGKuala Lumpur, 59100, Malaysia
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Viable Clinical Research
RECRUITINGKentville, Nova Scotia, B4N 0A3, Canada
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Wolfson Medical Center
RECRUITINGHolon, 5822012, Israel
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Yamanashi Prefectural Central Hospital
RECRUITINGYamanashi, 400-8506, Japan
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Yashoda Super Speciality Hospitals
RECRUITINGSecunderabad, 500003, India
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ZhuZhou Central Hospital
RECRUITINGZhuzhou, 412007, China
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a new pill tame inflammatory bowel disease?
- Could a 15-Minute ultrasound replace the scope for IBD monitoring?
- Can a new injection plus a pill tame ulcerative colitis?
- Can a new biologic tame ulcerative colitis?
- Can a Real-World study reveal the staying power of guselkumab?
- Can a new biologic calm the immune attack in ulcerative colitis?