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A Study of LY3819253 (LY-CoV555) in Participants Hospitalized for COVID-19

A Randomized, Placebo-Controlled, Double-Blind, Sponsor Unblinded, Single Ascending Dose, Phase 1 First in Human Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Intravenous LY3819253 in Participants Hospitalized for COVID-19

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04411628
Enrollment
26
Registered
2020-06-02
Start date
2020-05-28
Completion date
2020-08-26
Last updated
2021-11-12

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

Conditions

COVID-19

Brief summary

The purpose of this study is to test the safety and tolerability of LY3819253 when it is given by injection into a vein to participants hospitalized with COVID-19. 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 about 8 weeks and may include up to 15 visits in the hospital or the home.

Interventions

Administered IV.

DRUGPlacebo

Administered IV.

Sponsors

AbCellera Biologics Inc.
CollaboratorINDUSTRY
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 75 Years
Healthy volunteers
No

Inclusion criteria

* Are hospitalized or in the process of being admitted to hospital and have an initial laboratory determination of current COVID-19 infection less than or equal to (≤)72 hours prior to randomization * Are men or non-pregnant women * Women of childbearing potential must agree to use at least one highly effective form of contraception for the entirety of the study * Agree to the collection of nasopharyngeal swabs and venous blood

Exclusion criteria

* Require mechanical ventilation or anticipated impending need for mechanical ventilation * Received convalescent COVID-19 plasma treatment prior to enrollment * Were resident in a nursing home or long-term care facility immediately prior to current hospitalization * Suspected or proven serious, active bacterial, fungal, viral, or other infection (besides COVID-19) that in the opinion of the investigator could constitute a risk when taking investigational product * Have an oxygen saturation (SpO2) less than (\<)88 percent (%) while breathing room air at rest at randomization.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug AdministrationBaseline through Day 60An SAE is any adverse event that results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. The number of participants with 1 or more SAEs considered by the investigator to be related to study drug administration is reported. A summary of SAEs and other non-serious adverse events (AEs), regardless of causality, were reported in the Reported Adverse Events module.

Secondary

MeasureTime frameDescription
Pharmacokinetics (PK): Mean Concentration of LY3819253 on Day 29Day 29Pharmacokinetics (PK): Mean Concentration of LY3819253 on Day 29.
Pharmacodynamics (PD): Change From Baseline to Day 29 in Viral LoadBaseline, Day 29Pharmacodynamics (PD): Change from Baseline to Day 29 in Viral Load.
Pharmacodynamics (PD): SARS-CoV-2 Viral Load AUCDay 1 pre-dose, Days 3, 7, 11, 15, 22, 29 post doseThe SARS-CoV-2 viral load was derived from the cycle time (CT) values using a polymerase chain reaction (PCR) assay. Higher CT values indicate a lower viral load.
Pharmacodynamics (PD): Time to SARS-CoV-2 ClearanceDay 1 pre-dose, Days 3, 7, 11, 15, 22, 29 post dosePharmacodynamics (PD): Time to SARS-CoV-2 clearance.

Countries

United States

Participant flow

Participants by arm

ArmCount
Placebo
Participants received single dose of Placebo as intravenous infusion.
6
700 mg LY3819253 IV
Participants received single dose of 700 milligrams (mg) LY3819253 administered as intravenous infusion.
6
2800 mg LY3819253 IV
Participants received single dose of 2800 mg LY3819253 administered as intravenous infusion.
6
7000 mg LY3819253 IV
Participants received single dose of 7000 mg LY3819253 administered as intravenous infusion.
6
Total24

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003
Overall StudyLost to Follow-up0100
Overall StudyWithdrawal by Subject1120

Baseline characteristics

CharacteristicPlacebo700 mg LY3819253 IV2800 mg LY3819253 IV7000 mg LY3819253 IVTotal
Age, Continuous43.2 Years
STANDARD_DEVIATION 8.6
57.2 Years
STANDARD_DEVIATION 6.8
48.5 Years
STANDARD_DEVIATION 12.1
66.7 Years
STANDARD_DEVIATION 6.7
53.9 Years
STANDARD_DEVIATION 12.3
Ethnicity (NIH/OMB)
Hispanic or Latino
5 Participants4 Participants3 Participants3 Participants15 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
1 Participants2 Participants3 Participants3 Participants9 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants1 Participants1 Participants0 Participants2 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
1 Participants1 Participants0 Participants0 Participants2 Participants
Race (NIH/OMB)
White
5 Participants4 Participants5 Participants5 Participants19 Participants
Region of Enrollment
United States
6 Participants6 Participants6 Participants6 Participants24 Participants
Sex: Female, Male
Female
2 Participants2 Participants2 Participants1 Participants7 Participants
Sex: Female, Male
Male
4 Participants4 Participants4 Participants5 Participants17 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 / 60 / 60 / 6
other
Total, other adverse events
4 / 65 / 65 / 62 / 6
serious
Total, serious adverse events
0 / 60 / 60 / 60 / 6

Outcome results

Primary

Number of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration

An SAE is any adverse event that results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization. The number of participants with 1 or more SAEs considered by the investigator to be related to study drug administration is reported. A summary of SAEs and other non-serious adverse events (AEs), regardless of causality, were reported in the Reported Adverse Events module.

Time frame: Baseline through Day 60

Population: All randomized participants who received at least one dose of study drug.

ArmMeasureValue (NUMBER)
PlaceboNumber of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
700 mg LY3819253 IVNumber of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
2800 mg LY3819253 IVNumber of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
7000 mg LY3819253 IVNumber of Participants With One or More Serious Adverse Event(s) (SAEs) Considered by the Investigator to be Related to Study Drug Administration0 Participants
Secondary

Pharmacodynamics (PD): Change From Baseline to Day 29 in Viral Load

Pharmacodynamics (PD): Change from Baseline to Day 29 in Viral Load.

Time frame: Baseline, Day 29

Population: All randomized participants who received at least one dose of study drug and had baseline, post baseline data for viral load.

ArmMeasureValue (MEAN)Dispersion
PlaceboPharmacodynamics (PD): Change From Baseline to Day 29 in Viral Load10.476 log10 (Copies/mL)Standard Deviation 7.117
700 mg LY3819253 IVPharmacodynamics (PD): Change From Baseline to Day 29 in Viral Load10.923 log10 (Copies/mL)Standard Deviation 10.036
2800 mg LY3819253 IVPharmacodynamics (PD): Change From Baseline to Day 29 in Viral Load16.956 log10 (Copies/mL)Standard Deviation 10.388
7000 mg LY3819253 IVPharmacodynamics (PD): Change From Baseline to Day 29 in Viral Load15.726 log10 (Copies/mL)Standard Deviation 5.723
Secondary

Pharmacodynamics (PD): SARS-CoV-2 Viral Load AUC

The SARS-CoV-2 viral load was derived from the cycle time (CT) values using a polymerase chain reaction (PCR) assay. Higher CT values indicate a lower viral load.

Time frame: Day 1 pre-dose, Days 3, 7, 11, 15, 22, 29 post dose

Population: All randomized participants who received at least one dose of study drug and had data for SARS-CoV-2 viral load AUC.

ArmMeasureValue (MEAN)Dispersion
PlaceboPharmacodynamics (PD): SARS-CoV-2 Viral Load AUC48.865 Cycles*dayStandard Deviation 28.02
700 mg LY3819253 IVPharmacodynamics (PD): SARS-CoV-2 Viral Load AUC44.858 Cycles*dayStandard Deviation 40.027
2800 mg LY3819253 IVPharmacodynamics (PD): SARS-CoV-2 Viral Load AUC60.818 Cycles*dayStandard Deviation 24.266
7000 mg LY3819253 IVPharmacodynamics (PD): SARS-CoV-2 Viral Load AUC69.528 Cycles*dayStandard Deviation 39.336
Secondary

Pharmacodynamics (PD): Time to SARS-CoV-2 Clearance

Pharmacodynamics (PD): Time to SARS-CoV-2 clearance.

Time frame: Day 1 pre-dose, Days 3, 7, 11, 15, 22, 29 post dose

Population: All randomized participants who received at least one dose of study drug and had data for SARS-CoV-2 clearance.

ArmMeasureValue (MEAN)Dispersion
PlaceboPharmacodynamics (PD): Time to SARS-CoV-2 ClearanceNA Days
700 mg LY3819253 IVPharmacodynamics (PD): Time to SARS-CoV-2 Clearance7.7 DaysStandard Deviation 7
2800 mg LY3819253 IVPharmacodynamics (PD): Time to SARS-CoV-2 ClearanceNA Days
7000 mg LY3819253 IVPharmacodynamics (PD): Time to SARS-CoV-2 Clearance15.7 DaysStandard Deviation 11.2
Secondary

Pharmacokinetics (PK): Mean Concentration of LY3819253 on Day 29

Pharmacokinetics (PK): Mean Concentration of LY3819253 on Day 29.

Time frame: Day 29

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

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
PlaceboPharmacokinetics (PK): Mean Concentration of LY3819253 on Day 2928.2 microgram per milliliter (µg/mL)Geometric Coefficient of Variation 75
700 mg LY3819253 IVPharmacokinetics (PK): Mean Concentration of LY3819253 on Day 2959.4 microgram per milliliter (µg/mL)Geometric Coefficient of Variation 37
2800 mg LY3819253 IVPharmacokinetics (PK): Mean Concentration of LY3819253 on Day 29261 microgram per milliliter (µg/mL)Geometric Coefficient of Variation 50

Source: ClinicalTrials.gov · Data processed: Feb 21, 2026