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Ulcerative ColitisJune 2023Summary reviewed May 2026

What the LUCENT Trials Found — Mirikizumab for Ulcerative Colitis

LUCENT-1 and LUCENT-2 tested mirikizumab, an antibody that blocks IL-23, as both a starter and maintenance treatment for moderately to severely active ulcerative colitis. It became the first IL-23 inhibitor approved for ulcerative colitis.

What the trial was testing

The LUCENT-1 enrolled 1,162 patients with ulcerative colitis. The study was sponsored by Eli Lilly 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

24% reached clinical remission at 12 weeks — vs. 13% on placebo.

New England Journal of Medicine · 2023 · NCT03518086

These findings — that of patients in clinical remission at 12 weeks on mirikizumab vs. placebo — were published in the New England Journal of Medicine and represent the headline result of the study.

Researchers tracked outcomes across 1,162 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 ulcerative colitis, 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 (Omvoh) is FDA-approved for moderately to severely active ulcerative colitis and available now. Treatment starts with three IV doses, then switches to a self-injection every four weeks. Ask your gastroenterologist whether it fits your treatment history.

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.