Fibroblast Activation Protein: Molecular Imaging and Beyond

Area of Science:

• Oncology and Nuclear Medicine
• Molecular Imaging and Theranostics

Background:

• Fibroblast activation protein (FAP)-targeted PET/CT is increasingly utilized for visualizing stromal activation in desmoplastic tumors.
• Challenges in interpreting benign fibroblastic processes necessitate structured reporting for FAP imaging.
• Early FAP-targeted radionuclide therapy shows feasibility but faces limitations like rapid tracer washout and insufficient clinical trials.

Purpose of the Study:

• To review current applications of FAP imaging in oncology.
• To summarize FAP-targeted theranostic approaches.
• To explore image-guided strategies using FAP PET for novel drug development.

Main Methods:

• Review of current literature on FAP-targeted PET/CT imaging.
• Analysis of early-stage FAP-targeted radionuclide therapy studies.
• Exploration of theranostic concepts and image-guided therapeutic strategies.

Main Results:

• FAP PET/CT provides high-contrast visualization of tumor stroma.
• Structured reporting is crucial for accurate interpretation of FAP imaging.
• FAP-targeted therapies demonstrate potential but require further clinical validation.

Conclusions:

• FAP imaging is a valuable tool in oncology, aiding in tumor visualization and potentially guiding therapy.
• Further research and clinical trials are essential to overcome limitations in FAP-targeted radionuclide therapy.
• Image-guided strategies utilizing FAP PET may enhance the development and application of novel FAP-targeted drugs.