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An Induction Study To Investigate The Efficacy And Safety Of Duvakitug In Participants With Moderately To Severely Active Ulcerative Colitis

Overview

About this study

This is a multinational, multicenter, randomized, double-blind, placebo-controlled, Phase 3 induction study to evaluate the efficacy and safety of duvakitug in participants with moderately to severely active Ulcerative Colitis (UC). Study details include:

The study duration may be up to 35 weeks with:

* Screening period
* 12-week Sub-Study 1 (Single-Arm Open-Label Feeder Induction) or Sub-Study 2 (Pivotal Induction)
* 12-week Sub-Study 3 (Extended Induction for non-responders)
* 45 days follow-up visit for participants who do not enroll into the maintenance study (EFC18359)

The treatment duration will be up to 12 weeks in each sub-study. The number of scheduled on-site visits will be up to 8 for the Sub-Study 1 and Sub Study 2 or a maximum of 15 visits for participants completing extended induction.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

* Participants aged ≥18 and ≤80 years of age at Screening. Where permitted locally, participants 16 to <18 years of age who meet the definition of Tanner Stage 5 for development
* Confirmed diagnosis of moderately to severely active UC for at least 3 months prior to Baseline
* Demonstrated inadequate response, have shown loss of response or intolerance to conventional therapies or advanced therapies

Exclusion Criteria:

* Participants with Crohn's Disease (CD), indeterminate colitis
* Current diagnosis of Ulcerative Proctitis
* Participants with surgical bowel resection within the past 3 months prior to Baseline, or a history of >3 bowel resections
* Prior or current high-grade gastrointestinal (GI) dysplasia
* Participants on treatment with but not on stable doses of conventional therapies prior to baseline
* Participants with prohibited medications or therapies prior to baseline
* Participants with previous exposure to anti-TL1A investigational therapy The above information is not intended to contain all considerations relevant to a participant's potential participation in a clinical trial.

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 01/12/2026. Questions regarding updates should be directed to the study team contact.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Edward Loftus JR, M.D.

Contact us for the latest status

Contact information:

Troy Ofstie

5072664728

IBDRESEARCH@mayo.edu

Jacksonville, Fla.

Mayo Clinic principal investigator

Francis Farraye, M.D., M.S.

Contact us for the latest status

More information

Publications

Publications are currently not available

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CLS-20608019

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