P932 Corticosteroid-sparing effect of mirikizumab for the treatment of moderately-to-severely active Ulcerative Colitis: Extended induction subgroup analysis from Phase 3 trial
Bibliographic record
Abstract
Abstract Background Mirikizumab, an anti-IL-23p19 antibody, has demonstrated efficacy and safety in moderately-to-severely active ulcerative colitis (UC) Phase 3 trials (LUCENT-1 and -2; NCT03518086, NCT03524092).1 A treatment goal for patients with UC is corticosteroid (CS)-free remission. We assessed the CS-sparing effect of mirikizumab among the extended induction patient population receiving CS at induction baseline. Methods In LUCENT-1, patients in the modified intention to treat mirikizumab group (n=868) received mirikizumab 300 mg intravenously (IV) at Week (W)0, W4, and W8. Patients receiving mirikizumab on CS at baseline (n=351) remained on their stable baseline dose (prednisone ≤20 mg/day or equivalent, budesonide MMX 9 mg/day, or beclomethasone 5 mg/day) during induction (W0 to W12). Patients not achieving clinical response (≥2-point and ≥30% decrease in Modified Mayo Score from baseline; and rectal bleeding=0 or 1, or ≥1-point decrease from baseline) at W12 (n=272) entered LUCENT-2 open label (OL) extended induction and received 300 mg mirikizumab IV at W12, W16, and W20. Extended induction responders at W24 (n=144) entered OL maintenance and received 200mg mirikizumab subcutaneously (SC) Q4W until W52. CS taper was initiated if clinical response was achieved at W24 or earlier based on investigator discretion if symptomatic improvement was evident. Patients who discontinued CS and remained off throughout the study were considered "discontinued." Descriptive statistics for efficacy outcomes were summarized. Missing data were imputed as non-response. Results Of the 272 mirikizumab patients in the extended induction population, 118 received CS at induction baseline. The mean prednisone equivalent dose was 15mg. At W24, among the 62/118 (52.5%) who achieved clinical response and continued with maintenance, 8 (12.9%) discontinued CS, 2 (3.2%) achieved clinical remission off CS, and 8 (12.9%) achieved symptomatic remission off CS. At W52, 43/62 (69.4%) of the extended induction responders discontinued CS, 18 (29.0%) achieved clinical remission off CS, and 37 (59.7%) achieved symptomatic remission off CS. Among patients with non-missing data who completed W52 of mirikizumab treatment, 89.6% had discontinued CS (Table). Conclusion Nearly 70% of extended induction responders discontinued CS by W52. CS-sparing effect of mirikizumab in patients with moderately-to-severely active UC is clinically meaningful and aligns with the treatment goal of CS discontinuation. References: 1. D’Haens G, et al. N Engl J Med 2023;388(26):2444-2455.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.000 |
| Meta-epidemiology (broad) | 0.004 | 0.008 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.002 |
| Insufficient payload (model declined to judge) | 0.005 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".