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eVusheld Assessment reaL wORld Effectiveness in DoD Health System

An Observational Study to Assess the Real-world Effectiveness of EVUSHELD™ (Tixagevimab/Cilgavimab) as Pre-exposure Prophylaxis Against COVID-19 Among EVUSHELD-eligible Populations in the United States Department of Defense Healthcare System

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05569408
Acronym
VALOR DoD
Enrollment
4724
Registered
2022-10-06
Start date
2023-08-10
Completion date
2023-12-22
Last updated
2024-09-19

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

Conditions

COVID-19; SARS-CoV-2; 2019 Novel Coronavirus Disease

Keywords

Evusheld, tixagevimab and cilgavimab, Pre-exposure prophylaxis, COVID-19, SARS-CoV-2, Effectiveness

Brief summary

An AstraZeneca-sponsored observational, electronic healthcare record (EHR)-embedded retrospective cohort study to assess the real-world effectiveness of EVUSHELD against SARS-CoV-2 infection, COVID-19-related hospitalization, and other COVID-19 related outcomes in the total EUA-eligible patient population treated in DoD Health system.

Detailed description

This a Phase IV observational, secondary data study to assess the effectiveness of Evusheld in preventing COVID-19 infection and severe outcomes using the electronic medical records from the nationwide integrated health system. The study is designed as an AstraZeneca-sponsored observational, electronic healthcare record (EHR)-embedded retrospective cohort study to assess the real-world effectiveness of EVUSHELD against SARS-CoV-2 infection, COVID-19-related hospitalization, and other COVID-19 related outcomes in the total EUA-eligible patient population in the DoD health system.

Interventions

Tixagevimab (AZD8895) and cilgavimab (AZD1061)

Sponsors

AstraZeneca
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
12 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Receipt of Evusheld under the FDA EUA for Evusheld 2. Eligibility for Evusheld use under the EUA. -

Exclusion criteria

* None

Design outcomes

Primary

MeasureTime frameDescription
COVID-19 Hospitalisationup to 6 monthsTo assess the effectiveness of EVUSHELD as PrEP against COVID-19 hospitalizations up to 6 months following its initial administration
All-cause mortalityup to 6 monthsTo compare all-cause mortality up to 6 months following the initial dose of EVUSHELD, among subjects who did and did not receive EVUSHELD as PrEP

Secondary

MeasureTime frameDescription
COVID-19 hospitalisationUp 12 monthsTo assess the effectiveness of EVUSHELD as PrEP against COVID-19 hospitalisation at 12 month
Documented SARS-CoV-2 infectionUp to 6 and 12 monthsTo assess the effectiveness of EVUSHELD as PrEP against SARS-CoV-2 infection
COVID-19 related mortalityUp to 6 and 12 monthsTo assess the effectiveness of EVUSHELD as PrEP against COVID-19-related mortality
COVID-19 Intensive Care Unit (ICU) admisssionUp 6 and 12 monthsTo assess the effectiveness of EVUSHELD as PrEP against ICU admission
Medically attended COVID-19Up to 6 and 12 monthsTo assess the effectiveness of EVUSHELD as PrEP against medically attended COVID-19

Countries

United States

Outcome results

None listed

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