Development of FAPI PET as a Non-invasive Biomarker of Pulmonary Fibrogenesis

NCT ID: NCT06940427

Last Updated: 2025-11-21

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

PHASE2

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-11-19

Study Completion Date

2027-09-30

Brief Summary

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The goal of this clinical trial is to gain more information about how fibroblast activation protein inhibitor (FAPI) binds to a certain type of cells in fibrotic lung tissue and how this information can be used to better diagnose and track fibrotic lung disease activity.

Participants will undergo up to 4 PET/MRI scans using the FAPI radiotracer.

Detailed Description

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Researchers aim to develop a non-invasive PET/MRI imaging tool using FAPI as a PET radiotracer and MRI to assess the presence and extent of fibrogenesis (the process that leads to fibrosis and scarring) in the lungs.

Conditions

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Fibrosis Lung

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

PARALLEL

Groups A and B will be parallel; however, Group B participants will have the option to crossover to Group A upon completing Group B participation.
Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

Study Groups

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Group A - 3 scans

Participants undergo three PET/MRI scans using the FAPI radiotracer. They will have 3 research visits, and each visit may last up to 2.5 hours.

Group Type EXPERIMENTAL

FAPI tracer

Intervention Type DRUG

radioactive substance called a "tracer" injected into the arm

PET/MRI

Intervention Type DEVICE

positron emission tomography (PET) takes pictures of inside of the body

Group B - 2 scans

Participants undergo two PET/MRI scans using the FAPI radiotracer. They will have 2 research visits, and each visit may last up to 2.5 hours.

Group Type EXPERIMENTAL

FAPI tracer

Intervention Type DRUG

radioactive substance called a "tracer" injected into the arm

PET/MRI

Intervention Type DEVICE

positron emission tomography (PET) takes pictures of inside of the body

Group B Crossover

Participants undergo two additional PET/MRI scans using the FAPI radiotracer. They will have 2 additional research visits, and each visit may last up to 2.5 hours.

Group Type EXPERIMENTAL

FAPI tracer

Intervention Type DRUG

radioactive substance called a "tracer" injected into the arm

PET/MRI

Intervention Type DEVICE

positron emission tomography (PET) takes pictures of inside of the body

Interventions

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FAPI tracer

radioactive substance called a "tracer" injected into the arm

Intervention Type DRUG

PET/MRI

positron emission tomography (PET) takes pictures of inside of the body

Intervention Type DEVICE

Eligibility Criteria

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Inclusion Criteria

* Age 18 years or older
* Able and willing to provide informed consent
* Clinically evaluated for need for initiation of new treatment (in patients not on current treatment), initiation of change in current treatment, or addition of new treatment (to any current treatment) in the setting of fibrotic hypersensitivity pneumonitis (HSP) or idiopathic pulmonary fibrosis (IPF), per standard of clinical care at UW Health.
* Willing and able to undergo PET/MRI.
* Participants requiring intravenous (IV) conscious sedation for imaging are not eligible; participants requiring mild, oral anxiolytics for the clinical MRI will be allowed to participate as long as the following criteria are met:

* The subject has their own prescription for the medication
* Informed consent is obtained prior to the self-administration of this medication
* They come to the research visit with a driver

Exclusion Criteria

* Participant is unable or unwilling to provide informed consent
* Participant is pregnant
* Participant with contraindication(s) to or inability to undergo PET/MRI
* Participants with contraindications to GBCA will be asked to undergo research imaging without the use of contrast. Contraindications may be severe kidney disease or previously documented GFR \< 30 ml/min/1.73 m2
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University of Wisconsin, Madison

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Ali Pirasteh, MD

Role: PRINCIPAL_INVESTIGATOR

University of Wisconsin, Madison

Locations

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University of Wisconsin - Madison

Madison, Wisconsin, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Radiology Studies

Role: CONTACT

608-282-8349

Facility Contacts

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Stephanie Wilson

Role: primary

Other Identifiers

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A539300

Identifier Type: OTHER

Identifier Source: secondary_id

SMPH/RADIOLOGY/RADIOLOGY

Identifier Type: OTHER

Identifier Source: secondary_id

Protocol Version 3/27/25

Identifier Type: OTHER

Identifier Source: secondary_id

2025-0489

Identifier Type: -

Identifier Source: org_study_id

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