The first-order feature Kurtosis, which showed high repeatability in both intratracer groups, has shown prognostic value in overall survival prediction for PCa patients undergoing 177Lu-PSMA therapy in a previous study.20 Entropy-based features from the GLCM feature family also demonstrated very high levels of repeatability for both intratracer groups. The gene discussed is FOLH1; the disease is posterior cortical atrophy.