ImmunoPET Targeting Trophoblast Cell-surface Antigen 2 (Trop-2) in Solid Tumors

The First Affiliated Hospital of Xiamen University90 enrolled

Overview

The objective of the study is to construct a noninvasive approach 68Ga-MY6349 PET/CT to detect the Trop-2 expression of tumor lesions in patients with solid tumors and to identify patients benefiting from Trop-2 targeting antibody-drug conjugate treatment.

As a new trophoblast cell-surface antigen 2 (Trop-2) targeting PET radiotracer, 68Ga-MY6349 is promising as an excellent imaging agent applicable to various cancers. In this research, subjects with various types of tumors underwent contemporaneous 68Ga-MY6349 and standard-of-care imaging (18F-FDG, 68Ga-PSMA, or 68Ga-DOTATATE PET/CT) either for an initial assessment or for recurrence detection. Tumor uptake was quantified by the maximum standard uptake value (SUVmax). The numbers of positive tumor lesions of standard-of-care imaging and 68Ga-MY6349 PET/CT were recorded by visual interpretation. The diagnostic accuracy of 68Ga-MY6349 was calculated and compared to standard-of-care imaging.

Study Type

INTERVENTIONAL

Allocation

Purpose

DIAGNOSTIC

Masking

NONE

Enrollment

Conditions

Tumor Solid Tumor Positron-Emission Tomography

Interventions

standard-of-care imaging (18F-FDG, 68Ga-PSMA, or 68Ga-DOTATATE PET/CT), 68Ga-MY6349 PET/CTDIAGNOSTIC_TEST

Each subject receives a single intravenous injection of standard-of-care imaging radiopharmaceuticals (18F-FDG, 68Ga-PSMA, or 68Ga-DOTATATE) and 68Ga-MY6349, and undergoes PET/CT imaging within the specified time.

Eligibility

Sex: ALLMin age: 18 YearsMax age: 90 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: 1. adult patients (aged 18 years or older); 2. patients with suspected or newly diagnosed or previously treated malignant tumors (supporting evidence may include MRI, CT, tumor markers and pathology report); 3. patients who had scheduled both standard-of-care imaging (18F-FDG, 68Ga-PSMA, or 68Ga-DOTATATE PET/CT) and 68Ga-MY6349 PET/CT scans; 4. patients who were able to provide informed consent (signed by participant, parent or legal representative) and assent according to the guidelines of the Clinical Research Ethics Committee. Exclusion Criteria: 1. patients with pregnancy; 2. the inability or unwillingness of the research participant, parent or legal representative to provide written informed consent.

Locations (1)

The First Affiliated Hospital of Xiamen University

Xiamen, Fujian, China

Outcomes

Primary Outcomes

Evaluate the feasibility of PET/CT imaging with 68Ga-MY6349 for the non-invasive assessment of Trop2 expression in various cancer types.

Tumor Trop2 expression analysis in a fresh biopsy sample will be correlated to 68Ga-MY6349 tumor uptake, evaluated by measuring standardized uptake value (SUV) on the 68Ga-MY6349 PET/CT.

Time frame: 1 week

Secondary Outcomes

To investigate the superiority of 68Ga-MY6349 PET/CT over 18F-FDG PET/CT in some tumors through comparative analysis

The numbers of positive primary and metastatic lesions of standard-of-care imaging (18F-FDG PET/CT) and 68Ga-MY6349 PET/CT were recorded by visual interpretation.

Time frame: 2 weeks

Description of 68Ga-MY6349 uptake by measuring standardized uptake value (SUV) in various types of tumors

Standardized uptake value (SUV) of 68Ga-MY6349 PET/CT for each target lesion of subject or suspected primary tumor or/and metastasis.

Time frame: 1 week

Data from ClinicalTrials.gov

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