The aim of the study was to assess the correlation between metabolic response measured through positron emission tomography-computed tomography (PET-CT) with 18F choline (18F FCH) and overall survival (OS) in patients affected by bone lesions from metastatic castration-resistant prostate cancer treated with 223Ra dichloride. Eleven subjects were subjected to PET-CT with 18F FCH before and 1 month after 223Ra treatment. Reduction in total lesion activity (ΔTLA) between pretreatment and post-treatment scan was determined and patients were divided into responders (ΔTLA >50%) and nonresponders (ΔTLA <50%). The OS of the entire cohort was 12.7 ± 3.8 months. Kaplan-Meier analysis showed that responders presented a significantly longer survival than nonresponders (16.5 ± 1.9 months vs. 10.5 ± 0.9 months, p < 0.05). Reduction in TLA after 223Ra treatment seems to be correlated with a trend toward a longer survival.
Cancer biotherapy & radiopharmaceuticals. 2020 Feb 28 [Epub ahead of print]
Luca Filippi, Pietro Basile, Orazio Schillaci, Oreste Bagni
Department of Nuclear Medicine, Santa Maria Goretti Hospital, Latina, Italy., Department of Biomedicine and Prevention, University Tor Vergata, Rome, Italy.
This webpage is supported through an unrestricted educational grant from Bayer. Bayer is not involved in content development and the views expressed represent those of the patient and physician contributors.

