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AZD6489

Phase 1

RSV Respiratory Syncytial Virus | Monoclonal antibody | Infectious Disease |AstraZeneca PLC|Last Updated: Sep 1, 2026

Success Probability

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment160

FDA Designations

No designations recorded

Clinical trial landscape

AZD6489 · 1 trial · 1 indication

Phase 1 1
NCT07717840A Study to Characterize the Safety and Immunogenicity of AZD6489 in Participants 60 Years of Age and Older (ARIES)RSV Respiratory Syncytial Virus
ACTIVE NOT_RECRUITING164 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study to Characterize the Safety and Immunogenicity of AZD6489 in Participants 60 Years of Age and Older (ARIES)
RSV Respiratory Syncytial VirusUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of immediate unsolicited adverse events (AEs)
30 minutes post-study intervention

To assess the safety of a single IM vaccination with AZD6489 or licensed RSV vaccines

Incidence of injection site and systemic solicited adverse reactions (ARs)
Day 1 through 7 days post-study intervention

To assess the safety of a single IM vaccination with AZD6489 or licensed RSV vaccines

Incidence of unsolicited adverse events (AEs)
Day 1 through 28 days post-study intervention

To assess the safety of a single IM vaccination with AZD6489 or licensed RSV vaccines

Incidence of serious adverse events (SAEs)
Day 1 to Day 365

To assess the safety of a single IM vaccination with AZD6489 or licensed RSV vaccines

Incidence of adverse events of special interest (AESIs)
Day 1 to Day 365

To assess the safety of a single IM vaccination with AZD6489 or licensed RSV vaccines

Incidence of medically attended adverse events (MAAEs)
Day 1 to Day 365

To assess the safety of a single IM vaccination with AZD6489 or licensed RSV vaccines

RSV A nAb responses to AZD6489
Day 29

To characterize the nAb responses to RSV A in serum following a single IM vaccination with AZD6489

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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
AZD6489 Dose AEXPERIMENTALParticipants will receive AZD6489 Dose A as a single dose intramuscular injection on Day 1.
AZD6489 Dose BEXPERIMENTALParticipants will receive AZD6489 Dose B as a single dose intramuscular injection on Day 1.
Licensed RSV vaccine #1ACTIVE_COMPARATORParticipants will receive licensed RSV vaccine #1 as a single dose intramuscular injection on Day 1.
Licensed RSV vaccine #2ACTIVE_COMPARATORParticipants will receive licensed RSV vaccine #2 as a single dose intramuscular injection on Day 1.

Interventions

NameTypeDescription
AZD6489BIOLOGICALParticipants will receive AZD6489 as a single intramuscular injection.
Licensed RSV vaccine #1BIOLOGICALParticipants will receive licensed RSV vaccine #1 as a single intramuscular injection.
Licensed RSV vaccine #2BIOLOGICALParticipants will receive licensed RSV vaccine #2 as a single intramuscular injection.
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Eligibility Criteria

Age Range60 Years to N/A
SexALL
Healthy VolunteersYes
Study Sites6

Inclusion Criteria: * Participant must be ≥ 60 years of age at the time of signing the informed consent. * Participants who are medically stable in the opinion of the Investigator at the time of study intervention. Participants with chronic stable medical conditions with or without specific treatme...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMSep 1, 2026NCT07717840Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMSep 1, 2026NCT07717840Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWJul 21, 2026NCT07717840NEW_TRIAL: changed

Frequently asked questions about AZD6489

What is AZD6489 used for?

AZD6489 is an investigational monoclonal antibody being developed for RSV, or Respiratory Syncytial Virus. It is currently in Phase 1 clinical development for this infectious disease indication.

Who makes AZD6489?

AZD6489 is being developed by AstraZeneca PLC, which trades under the ticker AZN. The company is conducting clinical trials to evaluate the safety and immunogenicity of this investigational monoclonal antibody.

What phase is AZD6489 in?

AZD6489 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is active but not recruiting participants.

What clinical trials is AZD6489 in?

AZD6489 is being studied in the ARIES trial, registered as NCT07717840. This Phase 1 study is evaluating the safety and immunogenicity of AZD6489 in participants 60 years of age and older, with an enrollment of 164 participants in the United States.

Is AZD6489 a monoclonal antibody?

Yes, AZD6489 is a monoclonal antibody. It is being developed as a potential treatment or preventive option for RSV, Respiratory Syncytial Virus, and is currently in Phase 1 clinical trials.