Clearly Keytruda trial is not including patients as heavily pretreated as Advaxis trial.
This is criteria for Keytruda trial:
Criteria
Inclusion Criteria:
Has histologically- or cytologically-confirmed adenocarcinoma of the prostate without small cell histology. Disease must be either metastatic or locally confined inoperable disease that cannot be treated with definitive intent (no chance for a curative intervention).
Has supplied tumor tissue from a newly obtained biopsy or a biopsy obtained ≤12 months prior to study start and an archival specimen, if available, from a site not previously irradiated. Participants in Cohorts 1, 2, and 4 with visceral/measurable lesions must provide a newly obtained biopsy performed after the last line of systemic therapy or a biopsy obtained ≤12 months prior to study start and an archival specimen, if available. Participants in Cohorts 3 and 5 must at least provide an archival specimen.
For Cohorts 1, 2, and 3 only:
Has been treated with:
At least 1 targeted endocrine therapy (defined as second generation antiandrogen therapies that include but are not limited to abiraterone acetate with prednisone, enzalutamide, and next generation targeted agents such as ARN-509).
At least 1 regimen/line of chemotherapy that contained docetaxel.
No more than 2 chemotherapy regimens.
No more than 3 regimens/lines of the aforementioned treatments (having failed/progressed on chemotherapy and targeted endocrine therapy).