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

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

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04537910
Enrollment
25
Registered
2020-09-03
Start date
2020-09-02
Completion date
2020-12-28
Last updated
2021-12-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Brief summary

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.

Interventions

Administered SC.

DRUGPlacebo

Administered SC.

Sponsors

Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes

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 \[RNA\])

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3819253Days 1, 2, 3, 4, 5, 6, 7, 15, 29, 60, 85 post-dosePK: AUC\[0-∞\] of LY3819253

Countries

United States

Participant flow

Participants by arm

ArmCount
Placebo SC
Participants received a single SC dose of Placebo.
6
150 mg LY3819253 SC
Participants received a single SC dose of 150 mg LY3819253.
5
350 mg LY3819253 SC
Participants received a single SC dose of 350 mg LY3819253.
7
700 mg LY3819253 SC
Participants received a single SC dose of 700 mg LY3819253.
7
Total25

Baseline characteristics

Characteristic150 mg LY3819253 SC350 mg LY3819253 SC700 mg LY3819253 SCPlacebo SCTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
5 Participants7 Participants7 Participants6 Participants25 Participants
Age, Continuous46.0 years
STANDARD_DEVIATION 16
45.6 years
STANDARD_DEVIATION 9.2
41.4 years
STANDARD_DEVIATION 9.2
47.3 years
STANDARD_DEVIATION 12.8
44.9 years
STANDARD_DEVIATION 11.2
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
3 Participants1 Participants4 Participants0 Participants8 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
2 Participants6 Participants3 Participants6 Participants17 Participants
Region of Enrollment
United States
5 Participants7 Participants7 Participants6 Participants25 Participants
Sex: Female, Male
Female
1 Participants3 Participants2 Participants3 Participants9 Participants
Sex: Female, Male
Male
4 Participants4 Participants5 Participants3 Participants16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 60 / 50 / 70 / 7
other
Total, other adverse events
2 / 62 / 51 / 70 / 7
serious
Total, serious adverse events
0 / 60 / 50 / 70 / 7

Outcome results

Primary

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3819253

PK: AUC\[0-∞\] of LY3819253

Time frame: Days 1, 2, 3, 4, 5, 6, 7, 15, 29, 60, 85 post-dose

Population: All randomized participants who received at least one dose of LY3819253 and had evaluable PK data.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
150 mg LY3819253 SCPharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3819253NA micrograms*day per milliliter(μg*day/mL)
350 mg LY3819253 SCPharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY3819253918 micrograms*day per milliliter(μg*day/mL)Geometric Coefficient of Variation 15
700 mg LY3819253 SCPharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC[0-∞]) of LY38192531390 micrograms*day per milliliter(μg*day/mL)Geometric Coefficient of Variation 34

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026