After our last checkup with our med onco last Friday, he mentioned that my husband can stop taking Zytiga if his PSA drops to below zero after 6months treatment and just continue with Eligard and Xgeva.
Brief info, my husband was diagnosed with advanced pca late June 2018 (PSA 33) with mets to bones and several lymph nodes. He had TURP procedure and took Casodex (2wks) and then started end July 2018 with Zytiga+prednisone, Eligard (every 3months) and Xgeva (monthly).
After 2months of treatment, his PSA has gone down from 33 prior to treatment to 1.68 last week. His testosterone level is now at <0.025 ng/ml.
So med onco doctor told us Friday last week that if his PSA continues to do well and goes down to below zero after 6month treatment then we can stop with Zytiga and just continue with Eligard and Xgeva injections until July 2019 (1yr from start).
My question is:
1.) Is it a good course of action to stop Zytiga once we reach below zero PSA? And then onco said to discuss later on what will be the next treatment once his PSA starts to rise again? I see a lot of posts here about continued treatment even when PSA went undetectable so Im a bit confused.
2.) Is <0.025 ng/ml testosterone level a good or a not so good yet level?
Appreciate your insights. Thanks!