Introduction
Mirikizumab, a p19-directed interleukin-23 monoclonal antibody, is efficacious in inducing clinical remission at Week (W) 12 and maintaining clinical remission through W152 in patients with moderately-to-severely active ulcerative colitis (UC; LUCENT-1: W0-W12, NCT03518086; LUCENT-2: W12-W52, NCT03524092; LUCENT-3: W52-W212, NCT03519945). Here we present efficacy and safety results through W212 of mirikizumab treatment from the open-label extension LUCENT-3 study.
Aims & Methods
Symptomatic, clinical, endoscopic, histologic, corticosteroid-free (CSF), bowel urgency, quality-of-life, and adverse event (AE) outcomes are reported for mirikizumab induction responders, including patients with biologic failure, who entered LUCENT-3, with data shown for W52 maintenance remitters. Discontinuations or missing data were handled by nonresponder imputation (NRI), modified NRI (mNRI), and observed case (OC). mNRI uses multiple imputation for missing data and balances bias of NRI and OC. Table 1 provides endpoint and population definitions and abbreviations for maintenance remitters. Efficacy population N=179. Safety population N=339.
Results
Using mNRI among W52 mirikizumab maintenance remitters demonstrated clinical response in 79% at W212. Rates at W212 among W52 clinical remitters were 77% for symptomatic, 62% for clinical, 66% for endoscopic, 53% for histologic-endoscopic mucosal, 62% for CSF, and 60% for bowel urgency remission, 78% for Inflammatory Bowel Disease Questionnaire (IBDQ) response, and 73% IBDQ remission. Histologic-endoscopic mucosal improvement and bowel urgency clinically meaningful improvement at W212 were achieved in 54% and 75% of patients, respectively. Biologic Failed/Not Biologic Failed subgroup data also demonstrated maintenance of efficacy (Table 1). Stool frequency, rectal bleeding, bowel urgency, and abdominal pain symptom score reductions from induction baseline at W52 were sustained through W212. For W0-160 of LUCENT-3, serious AEs were reported in 12% of patients, while 7% discontinued treatment due to an AE; AEs of special interest included opportunistic infection (4%), cerebrocardiovascular events (2%), and malignancy (2%). Liver enzymes ≥3 upper limit of normal (ULN) included alanine aminotransferase (2%) and aspartate aminotransferase (1%); total bilirubin level was ≥2 ULN (2%).
Endpoint at W212
| In Week 52 Remitters1 % All mNRI
| In Week 52 Remitters1 % All NRI
| In Week 52 Remitters1 % All OC
| In Week 52 Remitters1 % Not Biologic Failed NRI
| In Week 52 Remitters1 % Not Biologic Failed OC
| In Week 52 Remitters1 % Biologic Failed NRI
| In Week 52 Remitters1 % Biologic Failed OC
|
Clinical response2
Clinical remission3
| 78.7
62.2
| 68.0
54.4
| 97.1
77.7
| 72.7
57.6
| 96.0
76.0
| 58.3
47.9
| 100.0
82.1
|
Symptomatic remission4
| 76.5
| 67.6
| 94.3 | 73.0
| 93.6
| 56.2
| 96.4
|
CSF remission5
| 62.2
| 54.4
| 77.7
| 57.6
| 76.0
| 47.9
| 82.1
|
HEMR6
HEMI7
| 52.8
54.4
| 47.6
49.0
| 66.0
67.9
| 51.5
52.5
| 65.4
66.7
| 39.6
41.7
| 67.9
71.4
|
Endoscopic remission8
| 65.9
| 61.5
| 81.3
| 63.6
| 79.7
| 57.1
| 84.8
|
Bowel urgency remission9
Bowel urgency CMI10
| 59.7
75.3
| 52.7
66.2
| 73.6
92.9
| 58.0
71.0
| 74.4
91.7
| 41.7
56.5
| 71.4
96.3
|
IBDQ response11
IBDQ remission12
| 77.5
73.4
| 72.5
69.1
| 95.6
90.4
| 73.8
75.0
| 94.4
92.6
| 63.5
57.1
| 97.9
84.8
|
Abbreviations: CMI=clinically meaningful improvement; CSF=corticosteroid-free; ES=endoscopic subscore; HEMI=histologic-endoscopic mucosal improvement; HEMR=histologic-endoscopic mucosal remission; IBDQ=Inflammatory Bowel Disease Questionnaire; MMS= Modified Mayo Score; mNRI=modified nonresponder imputation; n=number of participants in the specific category; N=number of participants in the analysis population; NRI=nonresponder imputation; NRS=numeric rating scale; OC=observed case; RB=rectal bleeding; SF=stool frequency; UC=ulcerative colitis; UNRS=Urgency numeric rating scale. Definitions: Biologic Failed: inadequate response, loss of response, or intolerance to a biologic therapy or the Janus kinase inhibitors for UC. Cerebrocardiovascular events: atrial fibrillation (N=2), angina unstable (N=1), coronary arterial stent insertion (N=1), hypertensive crisis (N=1), ventricular tachycardia (N=1)–angina and stent were in the same patient. Not Biologic Failed: failure of conventional treatments (ie, immunomodulators/corticosteroids); may include some participants who were exposed to but did not have biologic treatment failure. Malignancy: thyroid cancer metastatic (N=1), adenocarcinoma of colon (N=2), invasive ductal breast carcinoma (N=2). mNRI: patients who discontinue treatment treated as nonresponders and patients otherwise missing endpoint data imputed using multiple imputation. NRI: patients who discontinue treatment treated as nonresponders and patients otherwise missing endpoint data tagged as nonresponders. OC: patients who discontinue treatment or are otherwise missing data are excluded from analyses. Opportunistic infection: herpes zoster (N=5), candidiasis (N=3; 1 patient had both herpes zoster and candidiasis), and herpes simplex (N=1). 1Remitters: (MMS SF=0 or SF=1 with ≥1-point decrease from baseline; RB=0; and ES=0 or 1) cohort of LUCENT-2 at Week 52. 2Clinical response: ≥2-point and ≥30% decrease in MMS from baseline; RB=0 or 1, or RB ≥1-point decrease from baseline. 3Clinical remission: SF=0 or SF=1 with ≥1-point decrease in MMS from baseline; RB=0; and ES=0 or 1 (excluding friability). 4Symptomatic remission: SF=0 or SF=1 with ≥1-point decrease in MMS from baseline; RB=0. 5CSF remission: clinical remission, and no corticosteroid use for at least 12 weeks prior to Week 52; SF=0 or SF=1 with ≥1‑point decrease from induction baseline; RB=0; ES=0 or 1 (excluding friability). 6HEMR: ES=0 or 1 (excluding friability) + Geboes ≤2B.0. 7HEMI: ES=0 or 1 (excluding friability) + Geboes ≤3.1. 8Endoscopic remission: ES=0 or 1 (excluding friability); score ranges 0 to 4; a lower score indicates less mucosal damage. 9Bowel urgency remission: UNRS=0 or 1 . 10Bowel urgency CMI: change from baseline in UNRS ≥3 in patients with UNRS ≥3 at induction baseline . 11IBDQ total score ≥170. 12≥16-point improvement from baseline. |
Table 1: Summary of mirikizumab efficacy at week 212 in week 52 remitters.
Conclusion
Mirikizumab provides sustained long-term symptomatic, clinical, endoscopic, histologic, corticosteroid-free, and quality-of-life remission up to 4 years in patients with UC, including for biologic failed patients, with no new safety concerns.
References
Sands BE, D’Haens G, Clemow DB, Irving PM, Johns JT, Gibble TH, Abreu MT, Lee SD, Hisamatsu T, Kobayashi T, Dubinsky MC, Vermeire S, Siegel CA, Peyrin-Biroulet L, Moses RE, Milata J, Panaccione R, Dignass A. Three-Year Efficacy and Safety of Mirikizumab Following 152 Weeks of Continuous Treatment for Ulcerative Colitis: Results From the LUCENT-3 Open-Label Extension Study. Inflamm Bowel Dis. 2024:izae253
Disclosure
Bruce Sands reports consulting fees from AbbVie, Alimentiv, Amgen, Arena Pharmaceuticals, Artugen Therapeutics, AstraZeneca, Boehringer Ingelheim, Boston Pharmaceuticals, Calibr, Celgene, Celltrion, ClostraBio, Equillium, Enthera, Evommune, Fresenius Kabi, Galapagos, Genentech (Roche), Gilead Sciences, GlaxoSmithKline, Gossamer Bio, Index Pharmaceuticals, Innovation Pharmaceuticals, Inotrem, Kaleido, Kallyope, Merck, Morphic Therapeutics, MRM Health, Progenity, Prometheus Biosciences, Prometheus Laboratories, Protagonist Therapeutics, Q32 Bio, Sun Pharma, Surrozen, Target RWE, Teva, TLL Pharmaceutical, and Ventyx Biosciences; consulting and speaking fees will be disclosed in the final presentation.
David Clemow, Karen Samaan, Anil Guar, Jerine Paulissen, Sarah Folian, Ravneet Arora, and Richard Moses report being Eli Lilly and Company employees and stockholders.
Geert D’Haens reports advisor fees from AbbVie, Alimentiv, AstraZeneca, Boehringer Ingelheim, Bristol Myers Squibb, Celltrion, Eli Lilly and Company, Galapagos, GlaxoSmithKline, Gossamer Bio, Pfizer, Immunic, Johnson and Johnson, Takeda, Prometheus Biosciences, Prometheus Laboratories, Protagonist, Samsung, Seres, Tillotts, and Ventyx.
Severine Vermeire reports grants from AbbVie, Johnson and Johnson, Pfizer, Takeda, and Galapagos; consulting and/or speaking fees from AbbVie, Abivax, AbolerIS Pharma, AgomAb, Alimentiv, Arena Pharmaceuticals, AstraZeneca, Avaxia, BMS, Boehringer Ingelheim, Celgene, CVasThera, Cytoki Pharma, Dr Falk Pharma, Ferring, Galapagos, Genentech-Roche, Gilead, GSK, Hospira, IMIdomics, Janssen, Johnson and Johnson, Eli Lilly and Company, Materia Prima, Mestag Therapeutics, MiroBio, Morphic, MRM Health, Mundipharma, MSD, Pfizer, Prodigest, Progenity, Prometheus, Robarts Clinical Trials, Second Genome, Shire, Surrozen, Takeda, Theravance Biopharma, Tillots Pharma AG, VectivBio, Ventyx, and Zealand Pharma.
Peter Irving reports research grants from Celltrion, Pfizer, Takeda, and Galapagos; consulting fees from AbbVie, Arena, Boehringer Ingelheim, BMS, Celltrion, Elasmogen, Gilead, Janssen, Eli Lilly and Company, Pfizer, Prometheus, and Sandoz; payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing, or educational events from AbbVie, BMS, Celgene, Celltrion, Falk Pharma, Galapagos, Gilead, Janssen, Eli Lilly and Company, Pfizer, Takeda, and Tillotts Pharma AG; and support for attending meetings and/or travel from AbbVie and Tillotts Pharma AG.
Taku Kobayashi reports serving as a speaker, a consultant, or an advisory board member for AbbVie, Alfresa Pharma, Bristol Myers Squibb, Celltrion, Covidien, EA Pharma, Eiken, Eli Lilly and Company, Ferring Pharmaceuticals, Galapagos, Gilead Sciences, Janssen, JIMRO, Kissei, Kyorin Pharmaceutical, Mitsubishi Tanabe Pharma, Mochida Pharmaceutical, Nippon Kayaku, Pfizer, Sekisui Medical, Takeda Pharmaceutical, and Zeria Pharmaceutical and has received research funding from AbbVie, Alfresa Pharma, EA Pharma, Gilead Sciences, Kyorin Pharmaceutical, Mochida Pharmaceutical, Nippon Kayaku, Otsuka Holdings, Pfizer, Sekisui Medical, and Zeria Pharmaceutical.
Laurent Peyrin-Biroulet reports personal fees from AbbVie, Adacyte, Alimentiv, Alma Bio Therapeutics, Amgen, Applied Molecular Transport, Arena, Biogen, BMS, Celltrion, CONNECT Biopharma, Cytoki Pharma, Enthera, Ferring, Fresenius Kabi, Galapagos, Genentech, Gilead, Gossamer Bio, GSK, H.A.C. Pharma, IAG, Index Pharmaceuticals, Inotrem, Janssen, Eli Lilly and Company, Medac, Mopac, Morphic, MSD, Norgine, Nordic Pharma, Novartis, OM Pharma, ONO Pharma, OSE Immunotherapeutics, Pandion Therapeutics, Par’Immune, Pfizer, Prometheus, Protagonist, Roche, Sanofi, Sandoz, Takeda, Theravance, Thermo Fisher, TiGenix, Tillots, Viatris, Vifor, Ysopia, Abivax, Samsung, Ventyx, Roivant, and VectivBio.
Axel Dignass reports fees received for participation in clinical trials, review activities such as data monitoring boards, statistical analysis, and end point committees from Abivax, AbbVie, Bristol Myers Squibb, Dr Falk Foundation, Galapagos, Gilead, Janssen, and Pfizer; consultancy fees from AbbVie, Amgen, Arena Pharmaceuticals, Biogen, Boehringer Ingelheim, Bristol Myers Squibb/Celgene, Celltrion, Dr Falk Foundation, Ferring Pharmaceuticals, Fresenius Kabi, Galapagos, Janssen, Eli Lilly and Company, MSD, Pfizer, Pharmacosmos, Roche, Sandoz, Stada, Takeda, Tillotts, and Vifor Pharma; payment for lectures including service on speakers bureaus from AbbVie, Biogen, CED Service GmbH, Celltrion, Dr Falk Foundation, Ferring, Galapagos, Gilead, High5MD, Janssen, Materia Prima, MedToday, MSD, Pfizer, Sandoz, Takeda, Tillotts, and Vifor Pharma; and payment for manuscript preparation from AbbVie, Dr. Falk Foundation, Janssen, Takeda, Thieme, and UNI-MED Verlag.