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AZD0543

Phase 1

Human Metapneumovirus Infection | Biologics | Other |AstraZeneca PLC|Trials Updated: Sep 17, 2026

AZD0543 development status

Highest phase Phase 1
Registered trials 1 across 1 sponsor since Sep 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment144

FDA Designations

No designations recorded

AZD0543 clinical trials

AZD0543 · 1 trial · 1 indication

Phase 1 1
NCT07824622Study of Safety and PK of AZD0543 in Healthy AdultsHuman Metapneumovirus Infection
RECRUITING144 Analytics
PHASE1RECRUITING
Study of Safety and PK of AZD0543 in Healthy Adults
Human Metapneumovirus InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

Immediate AEs within 1 hour of IMP administration
Within 1 hour of IMP administration

To assess the safety of AZD0543 administered as a single IM or IV dose compared to placebo

Injection/infusion-related reactions
Within 24 hours of IMP administration

To assess the safety of AZD0543 administered as a single IM or IV dose compared to placebo

Injection/infusion site reactions
Through Day 8 post-IMP administration

To assess the safety of AZD0543 administered as a single IM or IV dose compared to placebo

AEs
Through Day 91 post-IMP administration

To assess the safety of AZD0543 administered as a single IM or IV dose compared to placebo

SAEs, MAAEs, and AESIs
Throughout the study post-IMP administration

To assess the safety of AZD0543 administered as a single IM or IV dose compared to placebo

Secondary Endpoints

AZD0543 serum concentrations over time
Study Day 1 baseline/post-dose; Study Day 2, 4, 8, 31, 91, 151, 271, 361
AZD0543 Cmax
Study Day 1 baseline/post-dose; Study Day 2, 4, 8, 31, 91, 151, 271, 361
AZD0543 Tmax
Study Day 1 baseline/post-dose; Study Day 2, 4, 8, 31, 91, 151, 271, 361
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Cohort 1: Low Dose AZD0543EXPERIMENTALParticipants will receive a single AZD0543 dose.
Cohort 1: PlaceboPLACEBO_COMPARATORParticipants will receive a single dose of placebo.
Cohort 2: Medium Dose AZD0543EXPERIMENTALParticipants will receive a single AZD0543 dose.
Cohort 2: PlaceboPLACEBO_COMPARATORParticipants will receive a single dose of placebo.
Cohort 3: High Dose AZD0543EXPERIMENTALParticipants will receive a single AZD0543 dose.
Cohort 3: PlaceboPLACEBO_COMPARATORParticipants will receive a single dose of placebo.

Interventions

NameTypeDescription
AZD0543BIOLOGICALSterile solution for injection or infusion administered as a single IM or IV dose on Day 1.
PlaceboOTHERVolume-matched 0.9% (w/v) sterile saline solution for injection or infusion administered as a single IM or IV dose on Day 1.
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites2

Key Inclusion Criteria: * Age 18 to 55 years * Body weight ≥ 45 kg and ≤ 110 kg and BMI within the range ≥ 18.0 kg/m2 to ≤ 30 kg/m2 Key Exclusion Criteria: * Hypersensitivity to IMP/components * Severe adverse reaction/hypersensitivity to other mAbs * Acute fever/illness/infection within 3 days o...

Countries:United States
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Recent Changes (Last 90 Days)

LOWSep 17, 2026NCT07824622NEW_TRIAL: changed
LOWSep 17, 2026NCT07824622NEW_TRIAL: changed

Frequently asked questions about AZD0543

What is AZD0543?

AZD0543 is an investigational monoclonal antibody being developed by AstraZeneca PLC for human metapneumovirus infection. It is currently in Phase 1 clinical development and has not been approved by the FDA. The program is evaluating the drug in healthy adult volunteers.

What is AZD0543 used for in human metapneumovirus infection?

AZD0543 is being studied for human metapneumovirus infection, a respiratory viral illness. It is an investigational monoclonal antibody and is not yet approved for any use. The ongoing Phase 1 trial is designed to assess safety and pharmacokinetics in healthy adults rather than to treat patients.

Who makes AZD0543?

AZD0543 is developed by AstraZeneca PLC, which trades on the Nasdaq under the ticker AZN. AstraZeneca is the sponsor of the Phase 1 study evaluating the monoclonal antibody in healthy adult volunteers.

What phase is AZD0543 in?

AZD0543 is in Phase 1 clinical development. The only registered trial is a Phase 1 study, and it is currently recruiting. AZD0543 is investigational and has not received FDA approval for human metapneumovirus infection or any other indication.

What clinical trials is AZD0543 in?

AZD0543 is being evaluated in one clinical trial, NCT07824622, titled Study of Safety and PK of AZD0543 in Healthy Adults. The Phase 1 trial is recruiting 144 healthy volunteers aged 18 years and older in the United States. It is randomized, double blind, and placebo controlled.