Myocardial Injury and Outcomes Following COVID-19 Vaccination (MYOVAX Study)

NCT ID: NCT04967807

Last Updated: 2025-04-02

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

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

57 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-08-05

Study Completion Date

2025-12-31

Brief Summary

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The study will focus on cardiac blood and imaging biomarkers to facilitate early recognition of patients at risk for myocardial injury after COVID-19 vaccination. Ultimately, the intention is to identify patients at risk, reduce adverse events, and determine the need for longer-term follow-up in patients with myocardial injury after vaccination.

Detailed Description

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Coronavirus disease 2019 (COVID-19) vaccination frequently leads to minor side effects that may be more intense after the second dose, including fatigue and pain. However, there are emerging reports of more serious side effects in a minority of patients including myocarditis. Given the recent introduction of COVID-19 vaccination, there is limited understanding of: (i) prevalence and pattern of myocardial injury post vaccination, (ii) the risk factors for myocardial injury and adverse cardiac events post vaccination, and (iii) imaging and blood biomarkers for early recognition of patients at risk of adverse outcomes.

This study will address the above-mentioned knowledge gaps by focusing on patients who have received at least one dose of a COVID-19 vaccine. The study will focus on cardiac blood and imaging biomarkers to facilitate early recognition of patients at risk for myocardial injury after COVID-19 vaccination. Ultimately, the intention is to identify patients at risk, reduce adverse events, and determine the need for longer-term follow-up in patients with myocardial injury after vaccination.

Conditions

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Myocardial Injury Myocarditis COVID-19 Vaccination SARS-CoV-2 Cardiac MRI

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

The study population will include 2 cohorts of patients post COVID-19 vaccination. Cohort A) symptomatic patients with clinical signs or symptoms suggestive of myocardial injury and Cohort B) asymptomatic patients without symptoms suggestive of myocardial injury who have had prior cardiac MRI.
Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

None (Open Label)

Study Groups

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Cohort A - Symptomatic

Those with clinical findings suggestive of myocarditis/myocardial injury after COVID-19 vaccination

Group Type OTHER

Cardiac PET/MRI

Intervention Type DIAGNOSTIC_TEST

An imaging technique that combines the strengths of both MRI and PET into one comprehensive study. This technique allows for detailed myocardial tissue characterization with MRI (including assessment of myocardial edema and fibrosis) and metabolic changes (including myocardial inflammation).

Blood Biomarkers

Intervention Type DIAGNOSTIC_TEST

Markers of cardiac damage, inflammation, circulating microRNA profiles, and COVID antibody levels will be evaluated in patients after COVID-19 vaccination.

Cohort B - Asymptomatic

Those without signs or symptoms suggestive of myocarditis after COVID-19 vaccination

Group Type OTHER

Cardiac PET/MRI

Intervention Type DIAGNOSTIC_TEST

An imaging technique that combines the strengths of both MRI and PET into one comprehensive study. This technique allows for detailed myocardial tissue characterization with MRI (including assessment of myocardial edema and fibrosis) and metabolic changes (including myocardial inflammation).

Blood Biomarkers

Intervention Type DIAGNOSTIC_TEST

Markers of cardiac damage, inflammation, circulating microRNA profiles, and COVID antibody levels will be evaluated in patients after COVID-19 vaccination.

Interventions

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Cardiac PET/MRI

An imaging technique that combines the strengths of both MRI and PET into one comprehensive study. This technique allows for detailed myocardial tissue characterization with MRI (including assessment of myocardial edema and fibrosis) and metabolic changes (including myocardial inflammation).

Intervention Type DIAGNOSTIC_TEST

Blood Biomarkers

Markers of cardiac damage, inflammation, circulating microRNA profiles, and COVID antibody levels will be evaluated in patients after COVID-19 vaccination.

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

1. Age ≥ 17 years (both Cohort A and B)
2. Received at least one dose of a COVID-19 vaccine in the past 6 months (both Cohort A and B)
3. Developed new clinical signs or symptoms suggestive of myocarditis/myocardial injury within one month of COVID vaccine administration without other known cause (Cohort A, only)

Exclusion Criteria

1. Contraindications to cardiac PET/MRI
2. Current history of COVID-19
Minimum Eligible Age

17 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University Health Network, Toronto

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Kate Hanneman, MD

Role: PRINCIPAL_INVESTIGATOR

University Health Network, Toronto

Locations

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University Health Network

Toronto, Ontario, Canada

Site Status

Countries

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Canada

References

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Marschner CA, Thavendiranathan P, Gustafson D, Howe KL, Fish JE, Iwanochko RM, Wald RM, Abdel-Qadir H, Epelman S, Cheung AM, Hong R, Hanneman K. Myocardial Inflammation on FDG PET/MRI and Clinical Outcomes in Symptomatic and Asymptomatic Participants after COVID-19 Vaccination. Radiol Cardiothorac Imaging. 2023 Mar 9;5(2):e220247. doi: 10.1148/ryct.220247. eCollection 2023 Apr.

Reference Type BACKGROUND
PMID: 36987440 (View on PubMed)

Other Identifiers

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21-5621

Identifier Type: -

Identifier Source: org_study_id

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