A 37-year old man with Pca...Bicalutamide and salvage radiation therapy (SRT) for the prostatic fossa (66 Gy) were introduced. Twenty-five months later, the PSA had decreased...then gradually rose to 11.0 ng/ml despite the addition of leuprorelin acetate followed by abiraterone...After the disease progressed while the patient underwent taxane-based chemotherapy, we performed a genetic test by FoundationONE CDx...Genetic testing revealed a frameshift mutation with a stop codon two positions further in the BRCA2 (pA902fs*2)...