THOUSAND OAKS, Calif., Dec. 13, 3010 /PRNewswire-FirstCall/ -- Amgen (Nasdaq: AMGN) today announced top-line results from a Phase 3 trial evaluating XGEVA(TM) (denosumab) versus placebo in 1,432 men with castrate-resistant prostate cancer. The trial, known as the '147 study, demonstrated that XGEVA significantly improved median bone metastasis-free survival by 4.2 months (HR=0.85, 95 percent CI ...