gvax trial

hello , looks like I am going through this journey once again.I am a head and neck cancer survivor from 2010. I have been diagnosed with very aggressive high risk prostate caner.gleason=4+3=7, 8/12 cores positive , psa 42. the oncologist at johns hopkins has decided I am a candidate for the GVAX study. This involves the pre op administration of cyclophosamide and the experimental prostrate vaccine gvax along with andro suppresion. has anyone had any experience with this? please advise thanks Greg