While only one type of immunotherapy, Sipuleucel-T, has yielded only modest improvements in survival most other types such as viruses, PD-1 and PD-L1 inhibitors, etc. have not been very effective, because of PCa's comparatively low mutational loads, I still have hope that immunotherapy will one day be the most effective means to achieve durable management of the diease (dare I say cure?)
The following two papers may be of interest to those who want an update on CAR-T cell therapy, which looks promising.
CART cell therapy for prostate cancer: status and promise
Thank you for posting this. I completed the three rounds of Provenge last month. As advertised, Provenge did not lower PSA nor did it reduce the cancer burden (small) in my body. In fact, my PET/CT with Axumin revealed 3 new mets last week (!)
I agreed to Provenge because it was shown to "prolong life" in clinical trials. A 13 month advantage for men with a PSA <20. For guys like me with a PSA <2? Who knows.
[I add that my research MO thinks Provenge is so- last decade. It is all about abiraterone plus PARP inhibitors and new drugs that target certain genetic mutations.]
I agree with your oncologist re PARP inhibitors. I was recently tested for a panel of DNA repair defect genes because my oncologist wants to see if I can qualify for a trial testing PARP inhibitors he is recruiting for. Cheers, Phil
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cart t therapy or lu177
T Therapy in men with APC
Immucura , Dendritic Cell Therapy, Spain. 
Waiting to get my infusion of CAR-T
