I have read the studies on the presence of AR-V7 (Onc didn't do) and regarding PSA decline by more than 50% after one month in relation to success of treatment. PSA went from 30 to 32 over 12 weeks since starting Xtandi, post docetaxel and concurrent Provenge. Looking for guidance on discontinuing Xtandi and moving on to Xofigo, give it more time or some other treatment. Was castrate resistant 8 months post diagnosis and while on docetaxel and lupron. Onc visit and lab work scheduled in 6 weeks.