Prospective Exploratory Study of FAPi PET/CT With Histopathology Validation in Patients With Various Cancers

NCT ID: NCT04459273

Last Updated: 2025-09-09

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

PHASE1

Total Enrollment

26 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-08-27

Study Completion Date

2027-07-01

Brief Summary

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This exploratory study investigates how an imaging technique called 68Ga-FAPi-46 PET/CT can determine where and to which degree the FAPI tracer (68Ga-FAPi-46) accumulates in normal and cancer tissues in patients with cancer. Because some cancers take up 68Ga-FAPi-46 it can be seen with PET. FAP stands for Fibroblast Activation Protein. FAP is produced by cells that surround tumors (cancer associated fibroblasts). The function of FAP is not well understood but imaging studies have shown that FAP can be detected with FAPI PET/CT. Imaging FAP with FAPI PET/CT may in the future provide additional information about various cancers.

Detailed Description

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PRIMARY OBJECTIVE:

I. To define the biodistribution of gallium Ga 68 fibroblast activation protein inhibitor (FAPi)-46 (68Ga-FAPi-46) in normal and cancer tissues of patients with various malignancies.

SECONDARY OBJECTIVES:

I. To evaluate the degree of 68Ga-FAPi-46 accumulation observed by positron emission tomography (PET) imaging as opposed to the amount of FAP in excised cancer tissue.

II. To assess the 68Ga-FAPI-46 biodistribution correlation with 18F-FDG biodistribution and to define the frequency of the following phenotypes (FAP+/ FDG+, FAP-/ FDG+, FAP+/ FDG-, FAP-/ FDG-)

EXPERIMENTAL OBJECTIVE:

To assess the correlation of 68Ga-FAPI-46 biodistribution with 68Ga-DOTATATE or 18F-DOPA (FDOPA), depending on the specific indication in patients who had them available

OUTLINE:

Patients receive 68Ga-FAPi-46 intravenously (IV), and then undergo PET/computed tomography (CT) over 20-90 minutes. On another day, patients receive 18F-FDG and then undergo PET/computed tomography (CT) according to standard of care procedures (if applicable).

Conditions

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Bladder Carcinoma Cervical Carcinoma Cholangiocarcinoma Hematopoietic and Lymphoid Cell Neoplasm Hepatocellular Carcinoma Malignant Adrenal Gland Neoplasm Malignant Brain Neoplasm Malignant Pleural Neoplasm Malignant Skin Neoplasm Malignant Solid Neoplasm Malignant Testicular Neoplasm Malignant Thymus Neoplasm Neuroendocrine Neoplasm Thyroid Gland Carcinoma Urothelial Carcinoma Cancer of Unknown Primary Site

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Basic science (68GA-FAPI-46 PET/CT)

Patients receive 68Ga-FAPi-46 intravenously (IV), and then undergo PET/computed tomography (CT) over 20-90 minutes. On another day, patients receive 18F-FDG and then undergo PET/computed tomography (CT) according to standard of care procedures (if applicable).

Group Type EXPERIMENTAL

Computed Tomography

Intervention Type PROCEDURE

Undergo PET/CT

Gallium Ga 68 FAPi-46

Intervention Type DRUG

Given IV

Positron Emission Tomography

Intervention Type PROCEDURE

Undergo PET/CT

18F-FDG

Intervention Type RADIATION

Given IV

Interventions

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Computed Tomography

Undergo PET/CT

Intervention Type PROCEDURE

Gallium Ga 68 FAPi-46

Given IV

Intervention Type DRUG

Positron Emission Tomography

Undergo PET/CT

Intervention Type PROCEDURE

18F-FDG

Given IV

Intervention Type RADIATION

Other Intervention Names

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CAT CAT Scan Computerized Axial Tomography Computerized Tomography CT CT Scan tomography 68Ga-FAPi-46 Gallium-68-FAPi-46 Medical Imaging, Positron Emission Tomography PET PET Scan Positron Emission Tomography Scan Positron-Emission Tomography proton magnetic resonance spectroscopic imaging 18F-fluorodeoxyglucose

Eligibility Criteria

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Inclusion Criteria

* Patients with the following cancer types:

* Brain cancer
* Bladder cancer
* Urothelial cancer
* Testicular cancer
* Skin cancer
* Thyroid cancer
* Hepatocellular carcinoma
* Cholangiocarcinoma
* Thymus cancer
* Pleural cancer
* Cervical cancer
* Adrenal cancer
* Neuroendocrine tumors
* Hematologic cancer
* Cancer of Unkown Primary
* Patients who are scheduled to undergo surgical resection or tissue biopsy of the primary tumor and/or metastasis
* Patients are ≥ 18 years old at the time of the radiotracer administration.
* Patient can provide written informed consent
* Patient is able to remain still for duration of imaging procedure (up to one hour)

Exclusion Criteria

* Patient is pregnant or nursing
* Patients with any new cancer therapy between the baseline PET/CT and the investigational FAPI PET/CT
* Patient has underlying disease which, based on the judgment of the investigator, might interfere with the collection of high quality data
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Jonsson Comprehensive Cancer Center

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jeremie Calais

Role: PRINCIPAL_INVESTIGATOR

UCLA / Jonsson Comprehensive Cancer Center

Locations

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UCLA / Jonsson Comprehensive Cancer Center

Los Angeles, California, United States

Site Status

Countries

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United States

Other Identifiers

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NCI-2020-03766

Identifier Type: REGISTRY

Identifier Source: secondary_id

20-000630

Identifier Type: -

Identifier Source: org_study_id

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