A Study of LY3819253 (LY-CoV555) in Healthy Participants

Study Overview
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Brief Summary
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The purpose of this study is to test the safety and tolerability of LY3819253 when it is given by injection just under the skin to healthy participants. Blood tests will be done to check how much LY3819253 is in the bloodstream and how long the body takes to eliminate it. Participation could last up to 16 weeks and may include up to six visits to the study center, with a one-week overnight stay.

Official Title
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A Randomized, Placebo-Controlled, Participant- and Investigator-Blind, Phase 1 Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of LY3819253 Administered Subcutaneously to Healthy Participants

Conditions
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Healthy

Intervention / Treatment
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* Drug: LY3819253
* Drug: Placebo


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Are overtly healthy as determined by medical evaluation including medical history and physical examination Are willing to follow study procedures, including having nasal or nasopharyngeal swabs collected Have a body mass index (BMI) within the range of greater than or equal to (≥)18.5 to less than (<)35 kilograms per square meter (kg/m²) Male participants must agree to adhere to contraception restrictions Female participants must be of non-childbearing potential Exclusion Criteria: Have or have had known or suspected severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection Have a history or presence of cardiovascular (including hypertension), respiratory, hepatic, renal, gastrointestinal, endocrine, hematological, psychiatric, or neurological disorders that, in the opinion of the investigator, are capable of Significantly altering the absorption, metabolism, or elimination of drugs Constituting a risk while taking the investigational product, or Interfering with the interpretation of data Have significant allergies to humanized monoclonal antibodies (mAbs) Have any of the following that are clinically significant: Multiple or severe drug allergies, or Intolerance to topical corticosteroids, or Severe posttreatment hypersensitivity reactions (including, but not limited to, erythema multiforme major, linear immunoglobulin A dermatosis, toxic epidermal necrolysis, or exfoliative dermatitis) Have had lymphoma, leukemia, or any malignancy within the past 5 years, except for basal cell or squamous epithelial carcinomas of the skin that have been resected with no evidence of metastatic disease for 3 years Have had breast cancer within the past 10 years Show evidence of human immunodeficiency virus (HIV) infection and/or positive human HIV antibodies Show evidence of current hepatitis C (that is, test positive for anti-hepatitis C antibody with confirmed presence of hepatitis C virus [HCV] ribonucleic acid [RNA])

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: LY3819253<br>Participants received single subcutaneous (SC) doses of 150 milligram (mg), 350 mg or 700 mg LY3819253. | Drug: LY3819253<br>* Administered SC.<br>* Other names: Bamlanivimab;|
| Placebo Comparator: Placebo<br>Participants received a single SC dose of Placebo. | Drug: Placebo<br>* Administered SC.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3819253 | PK: AUC[0-∞] of LY3819253 | Days 1, 2, 3, 4, 5, 6, 7, 15, 29, 60, 85 post-dose |