Performance and Prospects of [ 68 Ga]Ga-FAPI PET/CT Scans in Lung Cancer

Fibroblast activation protein (FAP) could be a promising target for tumor imaging and therapy, as it is expressed in >90% of epithelial cancers. A high level of FAP-expression might be associated with worse prognosis in several cancer types, including lung cancer. FAPI binds this protein and allo...

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Bibliographic Details
Published in:Cancers 2022-11, Vol.14 (22), p.5566
Main Authors: Borgonje, Paula E, Andrews, Louise M, Herder, Gerarda J M, de Klerk, John M H
Format: Article
Language:English
Subjects:
Case reports
Computed tomography
Disease
Fibroblast activation protein
Fibroblasts
Gallium
Gastric cancer
Labeling
Lung cancer
Medical imaging
Medical prognosis
Metastases
Metastasis
Neuroimaging
Positron emission tomography
Radioisotopes
Review
Tumors
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Summary:Fibroblast activation protein (FAP) could be a promising target for tumor imaging and therapy, as it is expressed in >90% of epithelial cancers. A high level of FAP-expression might be associated with worse prognosis in several cancer types, including lung cancer. FAPI binds this protein and allows for labelling to Gallium-68, as well as several therapeutic radiopharmaceuticals. As FAP is only expressed at insignificant levels in adult normal tissue, FAPI provides a highly specific tumor-marker for many epithelial cancers. In this review, current information on the use of [68Ga]Ga-FAPI PET/CT in lung cancer is presented. [68Ga]Ga-FAPI shows a high uptake (standardized uptake value = SUVmax) and tumor-to-background ratio (TBR) in primary lung cancer lesions, as well as in metastatic lesions of other tumor types located in the lung and in lung cancer metastases located throughout the body. Where a comparison was made to [18F]FDG PET/CT, [68Ga]Ga-FAPI showed a similar or higher SUVmax and TBR. In brain and bone metastases, [68Ga]Ga-FAPI PET/CT outperformed [18F]FDG PET/CT. In addition to this strong diagnostic performance, a possible prognostic value of [68Ga]Ga-FAPI PET/CT in lung cancer is proposed.
ISSN:2072-6694
2072-6694
DOI:10.3390/cancers14225566