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Crohn's DiseaseDecember 2024Summary reviewed July 2026

What the VIVID-1 Trial Found — Mirikizumab for Crohn's Disease

Researchers tested mirikizumab, an antibody that blocks a protein called IL-23, in people with moderate-to-severe Crohn's disease who hadn't responded well to other treatments. After one year, 38% of patients on mirikizumab showed healing in their intestines and symptom improvement, compared to 9% on placebo.

What the trial was testing

The VIVID-1 enrolled 1,158 patients with crohn's disease. The study was sponsored by Eli Lilly and Company and tracked outcomes across the full group of patients who matched the trial's eligibility profile.

It was a large trial designed to confirm whether the treatment works well enough for wider use. Trials at this stage are designed to produce evidence regulators and physicians can act on — not just observations to follow up later.

What the results showed

38% of patients showed intestinal healing and symptom relief after one year of treatment.

Lancet (London, England) · 2024 · NCT03926130

These findings — that patients showed both intestinal healing and symptom improvement after one year — were published in the Lancet (London, England) and represent the headline result of the study.

Researchers tracked outcomes across 1,158 patients enrolled in the trial. The result was consistent enough across the group that the team felt confident reporting it.

What this means for patients

For patients with crohn's disease, this result changes the calculus on what to ask their care team about. Whether it changes day-to-day care depends on factors like disease subtype, prior treatments, and where the patient is in their care journey.

What you can do now

Mirikizumab is FDA-approved for Crohn's disease as of 2024. This large study showed it can help patients who haven't responded to other biologics or standard treatments. Talk to your gastroenterologist about whether mirikizumab might be right for you, especially if you've tried other medications without success.

Eligibility for the treatments mentioned above depends on specific test results and clinical history. Bring this summary, the trial name, and your most recent labs or pathology report to your next visit.

Open crohn's disease trials

RecruitingLarge-scale testing

A Study of Icotrokinra in Participants With Moderately to Severely Active Crohn's Disease

The purpose of this study is to evaluate how-well icotrokinra works (clinical efficacy) and how safe it is (safety) in participants with moderately to severely active Crohn's disease (CD; a long-term condition causing severe inflammation of the intestinal tract).

Chandler, Arizona, United States +24 more
RecruitingInterventional study

Ketogenic and Carnivore (Lion) Diets for Inflammatory Bowel Disease and Rheumatoid Arthritis

This study is a randomized controlled clinical trial evaluating whether two therapeutic dietary approaches - a ketogenic diet and a carnivore (lion) diet - can improve quality of life, reduce symptoms, and influence measures of disease activity in adults with inflammatory bowel disease \[ulcerative colitis and Crohn's disease\] (IBD) or rheumatoid arthritis (RA). Participants will be randomized into one of three groups: 1) Ketogenic Diet, 2) Carnivore (Lion) Diet or 3) Wait-List Control. Participants randomized to a dietary group (ketogenic diet or carnivore diet) will be provided guidance on their specific dietary therapy and answer questions about their symptoms and quality of life at different intervals over a 24 week period. Participants will also complete laboratory testing at different intervals to assess for changes in nutritional status, cardiometabolic health and markers of immune activation and inflammation. Participants initially placed on the wait-list group will be asked similar questions about their symptoms and quality of life and complete the same laboratory testing as participants in a dietary group. Participants on the wait list will then be compared to participants following a specific dietary pattern to assess for any differences between the 2 groups. After 12 weeks, participants on the wait list will be randomized to a dietary group (ketogenic diet or carnivore diet) and followed in a similar fashion for an additional 12 week period.

Charlottesville, Virginia, United States