FDG-PET as an Imaging Modality to Diagnose and Risk Stratify Subclinical, Imaging Negative Ici-Myocarditis

NCT ID: NCT06566209

Last Updated: 2025-10-15

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

Total Enrollment

30 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-10-11

Study Completion Date

2027-04-30

Brief Summary

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The purpose of this pilot study is to evaluate Fluorodeoxyglucose - Positron Emission Tomography (FDG-PET) as an imaging modality to diagnose and risk stratify subclinical, imaging negative ICI-myocarditis, and to determine whether subclinical ICI-induced myocarditis is a distinct and clinically relevant entity with a risk of progression to fulminant myocarditis.

Detailed Description

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Conditions

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Subclinical Immune Checkpoint Inhibitor-Induced Myocarditis Myocarditis ICI-Myocarditis Solid Malignant Tumor Hematologic Malignancy Subclinical Myocarditis Subclinical ICI-myocarditis

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Experimental FDG PET/CT

Patients undergo 18F-FDG and 13N-ammonia PET/CT scan, blood sample collection and have their medical records reviewed on study.

Fluorodeoxyglucose - Positron Emission Tomography (FDG-PET)

Intervention Type DEVICE

Receive 18F-FDG PET/CT

Interventions

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Fluorodeoxyglucose - Positron Emission Tomography (FDG-PET)

Receive 18F-FDG PET/CT

Intervention Type DEVICE

Other Intervention Names

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18F-fluorodeoxyglucose positron emission tomography Positron Emission Tomography Computed Tomography FDG-PET Positron Emission Tomography-Computed Tomography (PET/CT)

Eligibility Criteria

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Inclusion Criteria

* Age ≥18 years at the time of signing informed consent
* Any solid or hematologic malignancy undergoing treatment with ICI (either as a single agent or in combination with others)
* Ambulatory and able to complete a 48-72 hour high fat and low carbohydrate diet with 18 hours fasting (PET diet), 18F-FDG PET/CT scanning, as well as 13N-ammonia PET-CT myocardial perfusion imaging (part of the routine protocol of the investigation). These two studies will be done as part of the same imaging set.
* Willing to return to Mayo Clinic for ongoing follow-up
* Left ventricular ejection fraction (LVEF) ≥45%
* Cardiac MRI (CMR) without conclusive evidence of inflammation, coronary assessment available (either via cardiac computed tomography angiography, CCTA, or via coronary angiogram) Informed consent obtained before any trial-related activities. Trial-related activities are any procedures that are carried out as part of the trial, including activities to determine suitability for the trial.

Exclusion Criteria

* Fulminant myocarditis requiring steroid therapy
* CMR with definitive evidence of myocarditis
* Clinical presentation consistent with acute coronary syndrome (wall motion abnormalities consistent with a specific coronary distribution, coronary angiogram with a culprit lesion identified, patients requiring revascularization either with percutaneous coronary interventions or coronary artery bypass grafting).
* Patients unable to provide informed consent
* Patients unable to complete the diet preparation protocol
* Pregnancy (all women of child-bearing age and potential will have a negative pregnancy test within 48 hours of the PET/CT at screen and 6-month visit)
* Breastfeeding
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Mayo Clinic

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Martin G. Rodriguez-Porcel, MD

Role: PRINCIPAL_INVESTIGATOR

Mayo Clinic in Rochester

Locations

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Mayo Clinic in Rochester

Rochester, Minnesota, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Clinical Trials Referral Office

Role: CONTACT

855-776-0015

Facility Contacts

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Clinical Trials Referral Office

Role: primary

855-776-0015

Related Links

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Other Identifiers

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NCI-2024-06871

Identifier Type: REGISTRY

Identifier Source: secondary_id

24-001222

Identifier Type: -

Identifier Source: org_study_id

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