Study Evaluating 68GA-FAPI-46 PET/CT in Patients With Interstitial Lung Disease

September 15, 2026 updated by: Livia Kruger, Mayo Clinic

A Phase I Single Center Study Evaluating 68GA-FAPI-46 PET/CT in Patients With Interstitial Lung Disease

The purpose of this research is to better understand the distribution of an investigational radioactive imaging agent called 68Ga-FAPI-46 in the lungs of people with interstitial lung disease (ILD) during a Positron Emission Tomography/Computed Tomography (PET/CT) scan.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
10

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Clinical diagnosis of interstitial lung disease
  • Radiologic lung abnormalities on diagnostic CT chest
  • Anatomic imaging (clinical diagnostic CT chest) obtained within ≤ 180 days prior to the planned FAPI 46 imaging exam or within 14 days after the imaging exam.
  • Willingness and ability to provide informed consent

Exclusion Criteria:

  • Pregnant as determined by a pregnancy test as per institutional guidelines for individuals of child-bearing potential
  • Declining to use effective contraceptive methods during the study (for individuals of child-producing potential)
  • Need for emergent surgery that would be delayed by participation
  • Bacterial, viral, or fungal infections requiring systemic therapy
  • Serious co-morbidities and serious nonmalignant disease (e.g., hydronephrosis, kidney failure, liver failure, or other conditions) that in the opinion of the investigator, physician of record and/or Sofie could compromise patient safety and/or protocol objectives.
  • No available chest CT radiological data
  • No clear diagnosis of ILD
  • Intolerability to perform the exam due to exuberant dyspnea or severely low pulmonary capacity.
  • Breastfeeding. Note: nursing parents are allowed if the potential participant commits to pumping breast milk and discarding it from injection to ≥ 24 hours from the time of the [68Ga]FAPI-46 injection.
  • Known hypersensitivity to any excipients used in [68Ga]FAPI-46

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: ⁶⁸Ga-FAPI-46 PET/CT
Subjects with interstitial lung disease will have a dose of 3 - 7 mCi (111 - 185MBq) of ⁶⁸Ga-FAPI-46 administered intravenously
Drug: ⁶⁸Ga-FAPI-46
Subjects will have 68Ga-FAPI-46 intravenously administered
Diagnostic test: PET/CT
Subjects will complete a PET/CT approximately 60-70 minutes after being given ⁶⁸Ga-FAPI-46

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Maximum Standardized Uptake Value in Abnormal Lung Parenchyma
Time Frame: Approximately 1 hour post injection
Maximum standardized uptake value (SUVmax) will be measured on 68Ga-FAPI-46 PET/CT in areas of abnormal lung parenchyma suggestive of interstitial lung disease
Approximately 1 hour post injection
Maximum Standardized Uptake Value in Normal Lung Parenchyma
Time Frame: Approximately 1 hour post injection
Maximum standardized uptake value (SUVmax) will be measured on 68Ga-FAPI-46 PET/CT in normal lung parenchyma
Approximately 1 hour post injection

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Specificity of 68Ga-FAPI-46 PET/CT for Detection of Interstitial Lung Disease
Time Frame: Baseline
Specificity will be calculated using diagnostic CT chest findings as the reference standard. Specificity is defined as the proportion of participants without CT evidence of interstitial lung disease that are identified as negative on 68Ga-FAPI-46 PET/CT.
Baseline
Sensitivity of 68Ga-FAPI-46 PET/CT for Detection of Interstitial Lung Disease
Time Frame: Baseline
Sensitivity will be calculated using diagnostic CT chest findings consistent with interstitial lung disease as the reference standard. Sensitivity is defined as the proportion of participants with CT evidence of interstitial lung disease that are identified as positive on 68Ga-FAPI-46 PET/CT
Baseline
Accuracy of 68Ga-FAPI-46 PET/CT for Detection of Interstitial Lung Disease
Time Frame: Baseline
Accuracy will be calculated using diagnostic CT chest findings as the reference standard. Accuracy is defined as the proportion of true positive and true negative 68Ga-FAPI-46 PET/CT findings among all evaluated findings.
Baseline

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Mayo Clinic

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Livia F. Kruger, MD, Mayo Clinic

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 16, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 1, 2030

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 1, 2031

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 8, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 8, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 14, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 18, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 15, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 25-009401

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

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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