A 37-year old man with Pca...The patient underwent 19 courses of docetaxel (60 mg/m2) and five courses of cabazitaxel (25 mg/m2) thereafter. Docetaxel reduced the PSA by 85%; however, cabazitaxel induced no PSA response. 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)...