Efficacy and safety of mirikizumab in patients with moderately-to-severely active Crohn's disease: a phase 3, multicentre, randomised, double-blind, placebo-controlled and active-controlled, treat-through study.

Background: Mirikizumab, a humanised monoclonal antibody that inhibits IL-23p19, is effective in moderate-to-severe ulcerative colitis. We aimed to evaluate the efficacy and safety of mirikizumab in patients with moderately-to-severely active Crohn's disease.
Methods: VIVID-1 was a global phase 3, randomised, double-blind, double-dummy, placebo-controlled and active-controlled, treat-through study. The study enrolled adult patients at 324 sites (hospitals or medical centres, clinical practices, and clinical research sites) in 33 countries across Europe, Asia, North America, Central America, South America, and Australia. Adult patients with moderately-to-severely active Crohn's disease and previous inadequate response, loss of response, or intolerance to one or more approved biological therapies or conventional therapies were randomly assigned 6:3:2 to receive mirikizumab 900 mg intravenously at weeks 0, 4, and 8, then 300 mg subcutaneously every 4 weeks from weeks 12 to 52; ustekinumab about 6 mg/kg intravenously at week 0, then 90 mg subcutaneously every 8 weeks from weeks 8 to 52; or placebo. The coprimary endpoints assessing superiority of mirikizumab over placebo were composite endpoints: patient-reported outcome (PRO) clinical response at week 12 and endoscopic response at week 52 (endoscopic response-composite), and PRO clinical response at week 12 and Crohn's Disease Activity Index (CDAI) clinical remission at week 52 (CDAI clinical remission-composite). The adjusted risk differences were calculated, and the comparison was performed by the Cochran-Mantel-Haenszel test. Non-responder imputation was used. VIVID-1 was registered on ClinicalTrials.gov, NCT03926130, and is now complete.
Findings: Between July 23, 2019, and Aug 23, 2023, 1150 patients were randomly assigned and received study treatment (safety population); 1065 patients were included in the efficacy population and received mirikizumab (n=579), ustekinumab (n=287), or placebo (n=199). Both coprimary endpoints were met: endoscopic response-composite was reached in 220 (38·0%) of 579 patients on mirikizumab versus 18 (9·0%) of 199 on placebo (99·5% CI 20·6-36·8; p<0·0001); CDAI clinical remission-composite was reached in 263 (45·4%) of 579 patients on mirikizumab versus 39 (19·6%) of 199 patients on placebo (99·5% CI 15·9-35·6; p<0·0001). The incidence rates of overall adverse events and discontinuations in patients treated with mirikizumab were lower compared with placebo. The most common adverse event across the three groups was COVID-19. Serious adverse events were reported in 65 (10·3%) of 630 patients on mirikizumab, 33 (10·7%) of 309 patients on ustekinumab, and 36 (17·1%) of 211 patients on placebo. There were three deaths during VIVID-1, one in the ustekinumab group, and two in the placebo group, including one in a placebo non-responder who switched to mirikizumab after week 12. None of the deaths were considered related to the study drug. The safety of mirikizumab in Crohn's disease was consistent with its known favourable profile.
Interpretation: Mirikizumab was safe and effective as induction and maintenance treatment for patients with moderately-to-severely active Crohn's disease who had intolerance, inadequate response, or loss of response to standard therapy.
Funding: Eli Lilly and Company.
Competing Interests: Declaration of interests MF has received research grants from AbbVie, Biogen, Janssen, Pfizer, Takeda, and Viatris; consultancy fees from AbbVie, AgomAb Therapeutics, Boehringer Ingelheim, Celgene, Celltrion, Eli Lilly, Janssen-Cilag, MRM Health, MSD, Pfizer, Takeda, and ThermoFisher; and speakers fees from AbbVie, Biogen, Boehringer Ingelheim, Falk, Ferring, Janssen-Cilag, MSD, Pfizer, Takeda, Truvion Healthcare, and Viatris. GD'H has served as adviser or speaker for Abbvie, Alimentiv, Amgen, Bristol Meiers Squibb, Boehringer Ingelheim, Celltrion, Ferring, Eli Lilly, Engene, Galapagos, GlaxoSmithKline, Immunic, Index Pharmaceuticals, Johnson and Johnson, Merck, Polpharm, Prometheus biosciences, Prometheus Laboratories, Procise Diagnostics, Protagonist, Sandoz, Takeda, Tillotts, and Ventyx. VJ has received consulting or advisory board fees from AbbVie, Alimentiv, Arena Pharmaceuticals, Asahi Kasei Pharma, Asieris, AstraZeneca, Avoro Capital, Bristol Myers Squibb, Celltrion, Eli Lilly, Endpoint Health, Enthera, Ferring, Flagship Pioneering, Fresenius Kabi, Galapagos, Gilde Healthcare, GlaxoSmithKline, Genentech, Gilead, Innomar, JAMP Pharma Group, Janssen, Merck, Metacrine, Mylan, Pandion, Pendopharm, Pfizer, Protagonist, Prometheus Biosciences, Reistone Biopharma, Roche, Roivant, Sandoz, SCOPE, Second Genome, Sorriso, Takeda, TD Securities, Teva, Topivert, Ventyx, and Vividion; and speaker's fees from AbbVie, Ferring, Bristol Myers Squibb, Galapagos, Janssen Pfizer Shire, Takeda, and Fresenius Kabi. SD has received consulting fees from AbbVie, Alimentiv, Allergan, Amgen, Applied Molecular Transport, AstraZeneca, Athos Therapeutics, Biogen, Boehringer Ingelheim, Bristol Myers Squibb, Celgene, Celltrion, Dr Falk Pharma, Eli Lilly, Enthera, Ferring Pharmaceuticals, Gilead, Hospira, Inotrem, Janssen, Johnson & Johnson, Morphic, MSD, Mundipharma, Mylan, Pfizer, Roche, Sandoz, Sublimity Therapeutics, Takeda, Teladoc Health, TiGenix, Union Chimique Belge, Vial, and Vifor; has received lecture fees from AbbVie, Amgen, Ferring Pharmaceuticals, Gilead, Janssen, Mylan, Pfizer, and Takeda. MC provided educational activities for AbbVie, China Medical System, IPSEN, Janssen, and Takeda; served on an advisory board for Boehringer Ingelheim and Janssen; and has received support for clinical research from Janssen and Takeda. SG has speaking commitments with AbbVie, Takeda, Janssen, Pfizer, Gilead, Galapagos, Ferring, Eli Lilly and Company, and Celltrion; serves on the drug monitoring committees with Janssen; and serves on advisory committees with Janssen, AbbVie, Takeda, Gilead, Galapagos, Eli Lilly and Company, Pfizer, Celltrion, and Ferring; serves on steering committees with Janssen, Bristol Myers Squibb, and AbbVie. TH has a joint research agreement from Kissei Pharmaceutical and EA Pharma; has received research grants from AbbVie, Daiichi Sankyo, EA Pharma, JIMRO, Kyorin Pharmaceutical, Mitsubishi Tanabe Pharma Corporation, Mochida Pharmaceutical, Nippon Kayaku, Pfizer, Takeda, Boston Scientific, and Zeria Pharmaceutical; and has received consulting and lecture fees from AbbVie, EA Pharma, Gilead Sciences, Janssen Pharmaceuticals, JIMRO, Kyorin Pharmaceutical, Mitsubishi Tanabe Pharma Corporation, Mochida Pharmaceutical, Pfizer, Kissei Pharmaceutical, and Takeda. JK has received research grants from AbbVie, Egis, Janssen, Nestlé, Nutricia, and Takeda; has received honoraria from AbbVie, Egis, Janssen, Nestlé, Nutricia, and Takeda; and has received consulting fees from AbbVie, Egis, Janssen, Nestlé, Nutricia, and Takeda. BS has served as a consultant for AbbVie, Abivax, Arena, Bristol Myers Squibb, Boehringer, CED Service, Celgene, CT Scout, Endpoint Health, Falk, Forga Software, Galapagos, Janssen, Lilly, Materia Prima, Pfizer, Takeda, Pharma Insight, Predictimmune, and PsiCro; has received speaker fees for AbbVie, BMS, CED Service, Chiesi, Falk, Ferring, Gilead, Janssen, Lilly, Materia Prima, Takeda, and Pfizer; and has received grant support from Arena and Pfizer (served as representative of the Charité). SMB, WC, FD, EH, ZL, MUL, NM, MP, and HC are employees and stockholders of Eli Lilly and Company. BES 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 from Abivax; consulting and speaking fees and other support from Lilly; research grants, consulting and speaking fees, and other support from Bristol Myers Squibb, Janssen, Pfizer, and Takeda; research grants and consulting fees from Theravance Biopharma; and stock options from Ventyx Biopharma.
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