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NCT Number: NCT06651281

Extension Study of Long-term Safety and Efficacy of Tulisokibart in Participants With Crohn's Disease or Ulcerative Colitis (MK-7240-011)

Researchers want to learn more about tulisokibart (also known as MK-7240) in an extension study. Tulisokibart is a medicine designed to treat active, moderate to severe Crohn's disease (CD) and ulcerative colitis (UC). An extension study is a type of study where people who received tulisokibart in certain other studies for CD or UC (called a parent study) may be able to join this study. The goals of this study are to learn about the safety of tulisokibart over time in people with CD or UC, and if people tolerate it.

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Key information

Conditions

Crohn Disease Colitis Colitis, Ulcerative Colonic Diseases Digestive System Diseases Gastroenteritis Gastrointestinal Diseases Inflammatory Bowel Diseases Intestinal Diseases

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Vojenská Nemocnice Brno-Internal department ( Site 0701), Brno, Brno-mesto, Czechia

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Has participated in a qualifying tulisokibart Phase 2 or Phase 3 parent study for CD or UC
  • The investigator determines that the participant derives clinical benefit from continued study intervention based upon clinical evaluations performed during their parent study
  • A participant assigned female sex at birth is not breastfeeding during the study intervention period and for at least 14 weeks after the last dose of study intervention
  • A participant of childbearing potential (POCBP) is not pregnant and has a negative highly sensitive pregnancy test (urine or serum) as required by local regulations within 24 hours (for a urine test) or 72 hours (for a serum test) before the first dose of study intervention
  • A POCBP uses an acceptable contraceptive method, or adheres to penile-vaginal intercourse abstinence as their preferred and usual lifestyle (abstinent on a long-term and persistent basis)

Exclusion criteria

  • Has prematurely discontinued study intervention in their parent study
  • Has received any protocol-specified prohibited medications during their parent study
  • Has known allergies, hypersensitivity, or intolerance to tulisokibart or its excipients

Treatment and study plan

Tulisokibart

Drug

Humanized monoclonal antibody that binds human tumor necrosis factor-like cytokine 1A (TL1A), administered subcutaneously

Other names: MK-7240

Placebo to tulisokibart

Drug

Placebo matching SC tulisokibart

Primary outcomes

  1. Number of Participants Who Experience an Adverse Event (AE)

    Time frame: Up to approximately 378 weeks

    An AE is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. The number of participants who experience an AE will be reported.

  2. Number of Participants Who Discontinue Study Treatment Due to an AE

    Time frame: Up to approximately 364 weeks

    An AE is any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. The number of participants who discontinue study treatment due to an AE will be reported.

Secondary outcomes

  1. Percentage of Participants with Crohn's Disease Achieving Clinical Remission per Crohn's Disease Activity Index (CDAI) Score

    Time frame: Week 364

    The percentage of participants who enrolled in their parent study with Crohn's disease who achieve clinical remission, as defined by CDAI score <150, at Week 364 will be presented.

  2. Percentage of Participants with Crohn's Disease Achieving Clinical Remission per Stool Frequency and Abdominal Pain Score

    Time frame: Week 364

    The percentage of participants who enrolled in their parent study with Crohn's disease achieving clinical remission at Week 364 per stool frequency/abdominal pain score (SF/APS), as defined by average daily SF ≤2.8 and average daily APS ≤1.0 and both not greater than baseline will be presented.

  3. Percentage of Participants with Crohn's Disease With Endoscopic Remission Per Simplified Endoscopic Score for Crohn's Disease (SES-CD)

    Time frame: Week 364

    The Simplified Endoscopic Score for Crohn's Disease (SES-CD) measures ileocolonoscopic findings in Crohn's Disease. Each segment of the ileo-colon (terminal ileum; ascending, transverse, and descending colon; rectum) is scored from 0 (normal or inactive disease) to 12 (severe disease; no more than one segment can have a score of 12, in which case the other 4 segments must each be ≤11), and the scores summed to produce an SES-CD ranging from 0 (overall least severe disease) to 56 (overall most severe disease). Endoscopic remission is defined as an SES-CD ≤4 and at least 2-point reduction from baseline and no subscore >1 in any individual variable, as scored by central reader.

  4. Percentage of Participants with Ulcerative Colitis Achieving Clinical Remission Per Modified Mayo Score (MMS)

    Time frame: Week 364

    The Modified Mayo Score (MMS) is a composite score of ulcerative colitis (UC) disease activity on a scale of increasing severity from 0-9, calculated by summing three subscores: Endoscopic subscore (ES), scored on a scale of increasing severity from 0 (normal or inactive disease) to 3 (severe disease, such as spontaneous bleeding or ulceration); Stool frequency subscore (SFS), scored on a scale of increasing frequency from 0 (normal number of stools) to 3 (≥5 stools more than normal per day for the participant); and rectal bleeding subscore (RBS), scored on a scale of increasing severity from 0 (no blood seen) to 3 (blood alone passed). Clinical Remission is defined as an ES of 0 or 1, RBS of 0, and SFS of 0 or 1 and not greater than the baseline SFS.

Study contacts

Contact information is provided by the study sponsor or research team.

Toll Free Number

CONTACT

[email protected]

1-888-577-8839

Sponsors and collaborators

Lead sponsor

Merck Sharp & Dohme LLC

Industry

Registry information

Official study title

A Phase 3 Extension Study to Evaluate the Long-term Safety and Efficacy of Tulisokibart in Participants With Crohn's Disease or Ulcerative Colitis

Important dates

Study start
2024
Primary completion
2037
Study completion
2037
First posted
Oct 21, 2024
Registry last updated
May 19, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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