Evidence for early use of Provenge is mixed so far. The PROTECT trial reported no significant difference in time to biochemical failure in men who used Provenge while still hormone sensitive, but it did prolong the PSADT. But with only 5 years of f/u, it was too soon to detect a survival difference.
Randomized Trial of Autologous Cellular Immunotherapy with Sipuleucel-T in Androgen-Dependent Prostate CancerAnother clinical trial (called STAND) found that there was an immune response in men with biochemically recurrent PC. At only 2 years of f/u, it's too soon to detect any clinical benefit.
Antigen-specific immune responses through 24 months in the STAND trial: A randomized phase 2 study evaluating optimal sequencing of sipuleucel-T (sip-T) and androgen deprivation therapy (ADT) in biochemically-recurrent prostate cancer (BRPC).Cost is $93,000 for 3 infusions.