Effect of infLuenza vaccInation After Myocardial INfArction on Cardiac inflammaTory responsE

NCT ID: NCT06336317

Last Updated: 2024-05-03

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE4

Total Enrollment

90 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-04-24

Study Completion Date

2027-12-31

Brief Summary

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The goal of this randomized, double-blind, placebo-controlled clinical trial is to investigate the immunological effects of influenza vaccination outside of the influenza season on arterial inflammation in patients with a recent acute myocardial infarction (AMI). The primary objective is to compare the effects of influenza vaccination to those of a placebo in reducing post-myocardial infarction coronary inflammation as measured by coronary computed tomography angiography (CCTA). The main questions it aims to answer are:

Does influenza vaccination reduce arterial inflammation as measured by CCTA at week 8 after percutaneous coronary intervention (PCI) in comparison to baseline? Does influenza vaccination modulate systemic inflammation as measured by blood biomarkers and in-vitro challenge tests at week 8 after PCI in comparison to baseline? Researchers will compare the effects of influenza vaccination with those of a placebo.

Detailed Description

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Following informed consent patients are randomized in a 1:1 fashion to influenza vaccination or placebo up to 7 days following PCI. Blood tests for immune cell phenotyping and transcriptomic and proteomic analyses will be collected at baseline and 8 weeks after study inclusion. Patients will undergo CTCA at baseline (≤ 7 days of an AMI) and 8 weeks after PCI.

Conditions

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Acute Myocardial Infarction Cardiovascular Diseases Inflammatory Response

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Vaccination arm

Influenza vaccine (Vaxigrip Tetra Sanofi Pasteur Europe).

Group Type ACTIVE_COMPARATOR

Influenza vaccine

Intervention Type BIOLOGICAL

VaxigripTetra Suspension for injection, 0,5ml prefilled syringe ATC code: J07BB02

Placebo arm

Sodium Chloride (Placebo) Solution for infusion, 9mg/ml ATC code: B05BB01

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type BIOLOGICAL

Sodium Chloride Solution for infusion, 9mg/ml ATC code: B05BB01

Interventions

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Influenza vaccine

VaxigripTetra Suspension for injection, 0,5ml prefilled syringe ATC code: J07BB02

Intervention Type BIOLOGICAL

Placebo

Sodium Chloride Solution for infusion, 9mg/ml ATC code: B05BB01

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Patients with a diagnosis of non-ST-segment elevation myocardial infarction
* A finalized coronary PCI
* Male or non-fertile female subjects ≥18 years. (Females without childbearing potential, postmenopausal women and women with a history of hysterectomy or other medical conditions that preclude pregnancy)
* Written informed consent
* A CCTA can be scheduled within 7 days after PCI

Exclusion Criteria

* Has received influenza vaccination within 6 months
* Other vaccination planned within 8 weeks (including covid-19 booster doses)
* Severe allergy to eggs or previous allergic reaction to influenza vaccine
* Cardiac surgery or staged PCI planned within 8 weeks
* Coronary stent involving the proximal RCA
* Suspicion of febrile illness or acute, ongoing infection
* Hypersensitivity to the active substances or ingredients of Vaxigrip or against any residues, such as eggs (ovalbumin or chicken proteins), neomycin, formaldehyde and octoxinol
* Subjects with endogenic or iatrogenic immunosuppression that may result in reduced immunization response
* Inability to provide informed consent
* Previous randomization in the ELIMINATE trial
* Any non-cardiovascular condition, e.g. malignancy, with a life expectancy of less than 1 year based on the investigator´s clinical judgement.
* Contraindication to coronary CT angiography (e.g., inability to lie flat, contraindication to glyceryl trinitrate, previous contrast allergy or contrast-induced nephropathy, severe renal impairment \[eGFR \<30 mL/min/1.73 m2\])
* Atrial fibrillation
* Uncontrolled chronic inflammatory disease
* Unable to comply with protocol requirements
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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The Swedish Heart and Lung Association

OTHER

Sponsor Role collaborator

Örebro University, Sweden

OTHER

Sponsor Role collaborator

University of Cambridge

OTHER

Sponsor Role collaborator

Region Örebro County

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Sara Cajander, MD

Role: PRINCIPAL_INVESTIGATOR

Region Örebro Län

Ole Frøbert, professor

Role: STUDY_CHAIR

Region Örebro Län

Locations

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Örebro University Hospital

Örebro, , Sweden

Site Status RECRUITING

Countries

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Sweden

Central Contacts

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Sara Cajander, MD

Role: CONTACT

+46196021042 ext. +46196021000

Facility Contacts

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Sara Cajander

Role: primary

+46702261026

Other Identifiers

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ELIMINATE-2024

Identifier Type: -

Identifier Source: org_study_id

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