Application of ⁶⁸Ga-FXX489 (NNS309) PET/CT Imaging in Diagnosis of Tumor Diseases.

Application of ⁶⁸Ga-FXX489 (NNS309) PET/CT Imaging in Diagnosis of Tumor Diseases.

A new radiotracer, 68Ga-FXX489 (NNS309), has been developed for tracking fibroblast activation protein (FAP) and visualizing the tumor stroma. The purpose of the study is to explore the diagnostic value of 68Ga-FXX489 (NNS309) PET/CT imaging in oncological diseases, to assess its safety, imaging characteristics, and biodistribution after administration.

Initially the investigator(s) will focus on imaging pancreatic cancer, lung cancer, breast cancer, gastric cancer, colorectal cancer.

STUDY AIMS

1. Determine the dosimetry for gallium-68 labelled 68Ga- FXX489(NNS309).
2. Evaluate the uptake and retention of radiotracer in a variety of solid tumors with 68Ga- FXX489(NNS309).
3. Evaluate the ability of FAP-2286 to detect metastatic disease. PRIMARY OBJECTIVES

1.Safety of 68Ga- FXX489(NNS309). 2.determine the organ dosimetry of 68Ga- FXX489(NNS309). 3.To assess the feasibility of detecting tumor uptake using FXX489(NNS309). 4.To determine the feasibility of detecting metastatic disease using FXX489(NNS309).

EXPLORATORY OBJECTIVES

1. Determine impact of administered dose of FXX489(NNS309) on image quality.
2. Compare the feasibility of detecting tumor uptake using FXX489(NNS309) and FAP-2286 .

A repeat radiolabeled FXX489(NNS309) PET may be obtained after initiation of subsequent treatment in order to evaluate changes in PET uptake due to treatment effect. Patients will be followed for up to 3 days after the injection of radiolabeled ligand for evaluation of adverse events.

Inclusion Criteria:

1. Patients with a high suspicion of oncological diseases.
2. Age: 18-80 years, no gender restriction, able to express themselves independently, and willing to participate in this study with a signed informed consent form.

Exclusion Criteria:

1. Failure to sign the informed consent form.
2. Severe visual or auditory impairment, cognitive disorders, or patients with claustrophobia who cannot communicate effectively.
3. Severe cardiac dysfunction, cardiac function class III-IV.
4. Renal failure (serum creatinine level > 1.2 mg/dl).
5. Allergy to alcohol.
6. Use of drugs within 1 week prior to the examination that can cause a disulfiram-like reaction with alcohol, such as penicillins, cephalosporins, or cefotetan.
7. Known pregnancy.