68Ga-FAPi-46 PET/CT Scan in Imaging Patients With Sarcoma

Status Recruiting

Clinical Trial Summary

This early phase I trial studies an imaging technique called 68Ga-FAPi-46 PET/CT to determine where and to which degree the FAPI tracer (68Ga-FAPi-46) accumulates in normal and cancer tissues in patients with sarcoma. PET is an established imaging technique that utilizes small amounts of radioactivity attached to very minimal amounts of tracer, in the case of this research, 68Ga-FAPi. Because some cancers take up 68Ga-FAPi it can be seen with PET. CT utilizes x-rays that traverse body from the outside. CT images provide an exact outline of organs and potential inflammatory tissue where it occurs in patient's body.

Clinical Trial Description

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 sarcoma with histopathology validation. SECONDARY OBJECTIVES: I. To evaluate whether 68Ga-FAPi-46 accumulation observed by positron emission tomography (PET) reflects geography, extent and degree of FAP expression determined by immuno-histochemistry (IHC). II. To assess the 68Ga-FAPI-46 biodistribution correlation with fludeoxyglucose F-18 (18F-FDG) biodistribution and to define the frequency of the following phenotypes (FAP positive [+]/ FDG+, FAP negative [-]/ FDG+, FAP+/ FDG-, FAP-/ FDG-). III. 3. To determine FAP expression profile and identify activating and loss of function mutations and gene rearrangement in available tumor tissue samples from patients with localized or metastatic sarcoma using RNA sequencing 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). ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04457258
Study type	Interventional
Source	Jonsson Comprehensive Cancer Center
Contact	Ethan Lam
Phone	310-206-7372
Email	eclam@mednet.ucla.edu
Status	Recruiting
Phase	Early Phase 1
Start date	September 8, 2020
Completion date	July 21, 2025

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