PURPOSE: Complete androgen blockade (CAB) does not prolong overall survival (OS) in patients with castration refractory prostate cancer (CRPC). Although there is variable clinical benefit with second-line hormone manipulation. we do not know which patients might benefit the most. OBJECTIVES: To identify clinical predictors of benefit of complete androgen blockade. https://www.roneverhart.com/Ludwig-P2230B-Imperial-Tension-Lug-for-Snare-Drums-p9792/