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  • Title: 68 Ga-FAPI-46 PET/CT in a Metastatic Castration-Resistant Prostate Cancer Patient With Low PSMA Expression.
    Author: Aryana K, Manafi-Farid R, Amini H, Divband G, Moghadam SZ.
    Journal: Clin Nucl Med; 2022 Nov 01; 47(11):972-973. PubMed ID: 35777753.
    Abstract:
    A 70-year-old man with mCRPC (metastatic castration-resistant prostate cancer) was referred for 68 Ga-PSMA PET/CT for restaging and the possibility of targeted molecular radioligand therapy with 177 Lu-PSMA. Numerous 68 Ga-PSMA-avid skeletal metastases with low SUVs were noted. Because of low PSMA expression, a 68 Ga-FAPI-46 PET/CT was performed to evaluate the eligibility for FAPI-based radioligand therapy. There were some discordant findings between 68 Ga-PSMA and 68 Ga-FAPI PET/CT scans regarding the detectability of lesions and SUVs. Our case signifies that 68 Ga-FAPI theragnostic may have a potential role in the treatment of mCRPC patients with insignificant PSMA expression or in cases after the failure of 177 Lu-PSMA therapy.
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