- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05126992
EU Secondary Data Post-Authorisation Safety Study of AZD1222 (D8111R00006)
A Post-authorisation/Post-marketing Observational Study to Evaluate the Association Between Exposure to AZD1222 and Safety Concerns Using Existing Secondary Health Data Sources
A study based on electronic heath records will evaluate the incidence and relative risk of safety concerns and adverse events of special interest (AESIs) following immunisation by AZD1222 in the real-world setting.
A cohort and a self-controlled case series desings will be used.
Study Overview
Status
Intervention / Treatment
Detailed Description
This retrospective study based on electronic heath records will evaluate the incidence and relative risk of safety concerns and adverse events of special interest (AESIs) following immunisation by AZD1222 in the real-world setting. The primary study objectives are to (1) describe baseline characteristics of all individuals in the matched population over the study period; (2) describe, among subjects who receive a first dose of AZD1222, the timing and type of second dose of any COVID-19 vaccine over the study period; (3) describe the incidence of prespecified AESIs in subjects who have received at least one dose of AZD1222 in the matched population and unvaccinated subjects; and (4) estimate any increased risk of prespecified AESIs following vaccination with AZD1222 using study retrospective cohort and self-controlled risk interval designs. Secondary objectives are identical to the primary, although focused on specific populations considered to have missing information, specifically (a) women who are pregnant or breastfeeding, (b) immunocompromised patients, (b) frail patients with certain comorbidities, (c) patients with autoimmune or inflammatory disorders, and (d) patients who, at cohort entry, had recently received a number of selected vaccines to prevent diseases other than COVID-19. A cohort and a self-controlled case series designs will be used.
Exploratory objectives: 1) To describe the IRs of prespecified AESIs in subjects who received an mRNA vaccine against COVID-19 (either Comirnaty or Spikevax) (active comparators) and in subjects from the pre-pandemic period (2017-2018) (historical comparators) in the matched population; 2) To estimate the relative and absolute risk of prespecified AESIs in subjects who received at least 1 dose of AZD1222 in the matched population compared with historical comparators in the matched population; and 3) To estimate the relative and absolute risk of prespecified AESIs in subjects who received 2 doses of AZD1222 in the matched population compared with subjects who received 2 doses of active comparator (Comirnaty or Spikevax as per homologous vaccination regimen) in the matched population*
*Feasibility of the active comparator analysis will be assessed prior to conducting the analysis to ensure comparability between groups.
Study Type
Enrollment (Actual)
Contacts and Locations
Study Contact
- Name: AstraZeneca Clinical Study Information Center
- Phone Number: 1-877-240-9479
- Email: information.center@astrazeneca.com
Study Locations
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Utrecht, Netherlands, 3528 AE
- Research Site
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Barcelona, Spain, 8007
- Research Site
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Valencia, Spain, 46020
- Research Site
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Southampton, United Kingdom, SO31 1AA
- Research Site
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Sampling Method
Study Population
The study population will include subjects who are exposed to the AZD1222 vaccine and 3 comparator groups: concurrent subjects who have not received any SARS-CoV-2 vaccine, historical controls, and active comparators*
*Feasibility of the active comparator analysis will be assessed prior to conducting the analysis to ensure comparability between groups
Description
Inclusion criteria for AZD1222, unvaccinated, and active comparators*:
- Have at least 12 months of data available before the index date
- Have no record of vaccination with any other COVID-19 vaccine on or before the index date
Inclusion criteria for historical comparators:
- Have at least 12 months of data available before the index date
Exclusion criteria:
For each AESI, subjects (in any matched cohort) who had a specific AESI during the look-back period before the index date will be excluded from the cohort for the analysis of that specific AESI, but not from the cohorts for analysis of other AESIs.
- If a subject had a specific AESI between the index date and the start of the risk window or had any censoring criteria within this time period, the subject will be excluded from the analysis of that specific AESI.
*Feasibility of the active comparator analysis will be assessed prior to conducting the analysis to ensure comparability between groups
Study Plan
How is the study designed?
Design Details
- Observational Models: Cohort
- Time Perspectives: Retrospective
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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AZD1222
at least one dose of AZD1222
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Covid-19 AstraZeneca Vaccine
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comparator 1
concurrent unvaccinated
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comparator 2
historical controls
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comparator 3
active comparators* *Feasibility of the active comparator analysis will be assessed prior to conducting the analysis to ensure comparability between groups |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Adverse events of special interest
Time Frame: up to 365 days
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several AESIs
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up to 365 days
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Cristina Rebordosa, MD, PhD, RTI
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimated)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- D8111R00006
Plan for Individual participant data (IPD)
Study Data/Documents
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URL
Information identifier: EUPAS RegisterInformation comments: EUPAS Register
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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