Mirikizumab

12.1 Mechanism of Action Mirikizumab-mrkz is a humanized IgG4 monoclonal antibody that selectively binds to the p19 subunit of human IL-23 cytokine and inhibits its interaction with the IL-23 receptor. IL-23 is involved in mucosal inflammation and affects the differentiation, expansion, and survival of T cell subsets, and innate immune cell subsets, which represent sources of pro-inflammatory cytokines. Research in animal models has shown that pharmacologic inhibition of IL-23p19 can ameliorate intestinal inflammation. Mirikizumab-mrkz inhibits the release of pro-inflammatory cytokines and chemokines.

1 INDICATIONS AND USAGE OMVOH is indicated for the treatment of: moderately to severely active ulcerative colitis in adults. moderately to severely active Crohn's disease in adults. OMVOH TM is an interleukin-23 antagonist indicated for the treatment of: moderately to severely active ulcerative colitis in adults ( 1 ) moderately to severely active Crohn's disease in adults ( 1 )

2 DOSAGE AND ADMINISTRATION Prior to Treatment Initiation Evaluate patients for tuberculosis (TB) infection. ( 2.1 , 5.3 ) Obtain liver enzymes and bilirubin levels. ( 2.1 , 5.4 ) Complete all age-appropriate vaccinations according to current immunization guidelines. ( 2.1 , 5.5 ) Recommended Dosage for Ulcerative Colitis Induction Dosage : Week 0, Week 4, and Week 8: Infuse 300 mg intravenously over at least 30 minutes. ( 2.2 ) Maintenance Dosage : Week 12 and every 4 weeks thereafter: Inject 200 mg subcutaneously (given as either one injection of 200 mg or as two consecutive injections of 100 mg each). ( 2.2 ) Recommended Dosage for Crohn's Disease Induction Dosage : Week 0, Week 4, and Week 8: Infuse 900 mg intravenously over at least 90 minutes. ( 2.3 ) Maintenance Dosage : Week 12 and every 4 weeks thereafter: Inject 300 mg subcutaneously (given as two consecutive injections of 100 mg and 200 mg in any order). ( 2.3 ) Preparation and Administration Instructions See the full prescribing information for preparation, administration and storage information for intravenous infusion and subcutaneous injection. ( 2.2 , 2.3 , 2.4 , 2.5 ) 2.1 Recommended Evaluations and Immunizations Prior to Treatment Initiation Evaluate patients for tuberculosis (TB) infection prior to initiating treatment with OMVOH [see Warnings and Precautions ( 5.3 )] . Obtain liver enzymes and bilirubin levels prior to initiating treatment with OMVOH [see Warnings and Precautions ( 5.4 )] . Complete all age-appropriate vaccinations according to current immunization guidelines [see Warnings and Precautions ( 5.5 )] . 2.2 Recommended Dosage for Ulcerative Colitis Induction Dosage Week 0, Week 4, and Week 8: Infuse 300 mg intravenously over at least 30 minutes [see Dosage and Administration ( 2.4 )]. Maintenance Dosage Week 12 and every 4 weeks thereafter : Inject 200 mg subcutaneously (given as one injection of 200 mg or as two consecutive injections of 100 mg each) [see Dosage and Administration ( 2.5 ) and How Supplied/Storage and Handling ( 16 )] . 2.3 Recommended Dosage for Crohn's Disease Induction Dosage Week 0, Week 4, and Week 8 : Infuse 900 mg intravenously over at least 90 minutes [see Dosage and Administration ( 2.4 )]. Maintenance Dosage Week 12 and every 4 weeks thereafter : Inject 300 mg subcutaneously (given as two consecutive injections of 100 mg and 200 mg in any order) [see Dosage and Administration ( 2.5 ) and How Supplied/Storage and Handling ( 16 )] . 2.4 Preparation and Administration Instructions for Intravenous Infusion OMVOH for intravenous use is intended for administration by a healthcare provider using aseptic technique. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. The solution should be a clear to opalescent, colorless to slightly yellow to slightly brown solution, and free of visible particles. Do not use OMVOH if it is cloudy or there are visible particles. Prior to intravenous administration, determine the dose needed based on the patient's indication (see Table 1 below). For Crohn's disease, discard 45 mL of the infusion bag prior to adding vial contents. Withdraw the required amount of solution from the vial(s) using a 18 gauge to 21 gauge needle and transfer to an infusion bag containing 0.9% Sodium Chloride Injection or 5% Dextrose Injection (see Table 1 below). Do not mix with other drugs. Do not dilute or infuse through the same intravenous line with other solutions. Table 1: Intravenous Induction Dose and Volume of Diluent Required Indication Intravenous Induction Dose Number of OMVOH 300mg/15mL vials needed Volume of 0.9% Sodium Chloride or 5% Dextrose Injection Ulcerative colitis 300 mg 1 50 mL, 100 mL, or 250 mL Crohn's disease 900 mg 3 100 mL or 250 mL Gently invert the infusion bag to mix the contents. Do not shake the prepared infusion bag. Connect the intravenous administration set (infusion line) to the prepared infusion bag and prime the line. Infuse the diluted solution intravenously over a period of at least 30 minutes for the 300 mg dose; at least 90 minutes for the 900 mg dose. If stored refrigerated, allow the diluted solution in the infusion bag to warm to room temperature prior to the start of the intravenous infusion. At the end of the infusion, flush the line with 0.9% Sodium Chloride Injection or 5% Dextrose Injection. Administer the flush at the same infusion rate as used for OMVOH administration. The time required to flush OMVOH solution from the infusion line is in addition to the minimum 30-minute infusion time. Storage of Diluted Solution Start the infusion immediately after preparation. If not used immediately, store the diluted infusion solution in the refrigerator at 2°C to 8°C (36°F to 46°F). Use the diluted infusion solution within 48 total hours, of which not more than 5 hours are permitted at non-refrigerated temperatures not to exceed 25°C (77°F), starting

6 ADVERSE REACTIONS The following topics are also discussed in detail in the Warnings and Precautions section: Hypersensitivity Reactions [see Warnings and Precautions ( 5.1 )] Infections [see Warnings and Precautions ( 5.2 )] Tuberculosis [see Warnings and Precautions ( 5.3 )] Hepatotoxicity [see Warnings and Precautions ( 5.4 )] Most common adverse reactions are: Ulcerative colitis (≥2%) : Induction : upper respiratory tract infections and arthralgia. ( 6.1 ) Maintenance: upper respiratory tract infections, injection site reactions, arthralgia, rash, headache, and herpes viral infection. ( 6.1 ) Crohn's disease (≥5%) : upper respiratory tract infections, injection site reactions, headache, arthralgia, and elevated liver tests ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Eli Lilly and Company at 1-800-LillyRx (1-800-545-5979) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Ulcerative Colitis OMVOH was studied up to 12 weeks in subjects with moderately to severely active ulcerative colitis in a randomized, double-blind, placebo-controlled induction study (UC-1). In subjects who responded to induction therapy in UC-1, long term safety up to 52 weeks was evaluated in a randomized, double-blind, placebo-controlled maintenance study (UC-2) and a long-term extension study [see Clinical Studies ( 14.1 )] . In the induction study (UC-1), 1279 subjects were enrolled of whom 958 received OMVOH 300 mg administered as an intravenous infusion at Weeks 0, 4, and 8. In the maintenance study (UC-2), 581 subjects were enrolled of whom 389 received OMVOH 200 mg administered as a subcutaneous injection every 4 weeks. Table 2 summarizes the adverse reactions reported in at least 2% of subjects and at a higher frequency than placebo during UC-1. Table 2: Adverse Reactions a in Subjects with Ulcerative Colitis through Week 12 in a Placebo-Controlled Induction Study (UC-1) a Reported in at least 2% of subjects and at a higher frequency than placebo. b OMVOH 300 mg as an intravenous infusion at Weeks 0, 4, and 8. c Upper respiratory tract infections includes related terms (e.g., COVID-19, nasopharyngitis, pharyngitis, rhinitis, sinusitis, and upper respiratory tract infection). Adverse Reactions OMVOH 300 mg Intravenous Infusion b N=958 n (%) Placebo N=321 n (%) Upper respiratory tract infections c 72 (8%) 20 (6%) Arthralgia 20 (2%) 4 (1%) In the induction study (UC-1), infusion-related hypersensitivity reactions were reported by 4 (0.4%) subjects treated with OMVOH and 1 (0.3%) subject treated with placebo. Table 3 summarizes the adverse reactions reported in at least 2% of subjects and at a higher frequency than placebo during the 40-week controlled period of UC-2. Table 3: Adverse Reactions a in Subjects with Ulcerative Colitis through Week 40 In a Placebo-Controlled Maintenance Study (UC-2) a Reported in at least 2% of subjects and at a higher frequency than placebo b OMVOH 200 mg as a subcutaneous injection at Week 12 and every 4 weeks thereafter for up to an additional 40 weeks. c Upper respiratory tract infections includes related terms (e.g., COVID-19, nasopharyngitis, pharyngitis, rhinitis, sinusitis, and upper respiratory tract infection). d Injection site reactions includes related terms (e.g., erythema, hypersensitivity, pain, reaction, and urticaria at the injection site). e Rash is composed of several similar terms. f Herpes viral infection includes related terms (e.g., herpes zoster, herpes simplex, and oral herpes). Adverse Reactions OMVOH 200 mg Subcutaneous Injection b N=389 n (%) Placebo N=192 n (%) Upper respiratory tract infections c 53 (14%) 23 (12%) Injection site reactions d 34 (9%) 8 (4%) Arthralgia 26 (7%) 8 (4%) Rash e 16 (4%) 2 (1%) Headache 16 (4%) 2 (1%) Herpes viral infection f 9 (2%) 1 (1%) Infections In UC-1 through Week 12, infections were reported by 145 (15%) subjects treated with OMVOH 300 mg and 45 (14%) subjects treated with placebo. Serious infections were reported by less than 1% in both groups. Serious infections in the OMVOH group included intestinal sepsis, listeria sepsis, and pneumonia. In the maintenance study (UC-2) through Week 40 (a total of 52 weeks of treatment), infections were reported by 93 (24%) subjects treated with OMVOH 200 mg and 44 (23%) subjects treated with placebo. A case of COVID-19 pneumonia was reported as a serious infection in the OMVOH group. Hepatic Enzyme Elevations In UC-1 through Week 12, alanine aminotransferase (ALT) ≥5X ULN was reported by 1 (0.1%) subject treated with OMVOH 300 mg and 1 (0.3%) subject treated with placebo. Aspartate aminotransferase (AST) ≥5X ULN was reported by 2 (0.2%) subjects treated with OMVOH 300 mg and no subject treated with pl

7 DRUG INTERACTIONS 7.1 CYP450 Substrates Increased concentrations of cytokines (e.g., IL-1, IL-6, IL-10, TNFα, IFN) during chronic inflammation associated with certain diseases including Crohn's disease may suppress the formation of CYP450 enzymes. Therapeutic proteins, including mirikizumab-mrkz, that decrease the concentrations of these pro-inflammatory cytokines may increase the formation of CYP450 enzymes resulting in decreased CYP450 substrate exposure. Upon initiation or discontinuation of OMVOH in patients treated with concomitant CYP450 substrates, monitor drug concentrations or other therapeutic parameters, and adjust the dosage of the CYP450 substrate as needed. See the prescribing information of specific CYP450 substrates.