Oncothyreon Canada ULC

The purpose of this study is to find out whether the new drug PX-866 will slow the growth of your prostate cancer. The investigators will also watch you carefully for any side effects that PX-866 might cause.

The purpose of this study is to examine the immunological response rate to administration of the THERATOPE® vaccine in women with stable metastatic breast cancer who are being treated with aromatase inhibitors or Faslodex® and who do not require chemotherapy.
Post-menopausal women on aromatase inhibitors or Faslodex® alone and pre-menopausal women on aromatase inhibitors plus luteinising hormone-releasing hormone (LH/RH)-agonist may be eligible to be enrolled.
Patients must not have had radiotherapy or major surgery within four (4) weeks prior to entering the study.
Information about the safety and tolerability of administration of the THERATOPE® vaccine will also be gathered during the course of the study.

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Vaccines may make the body build an immune response to kill tumor cells. It is not yet known whether THERATOPE vaccine therapy is more effective than standard vaccine therapy in treating metastatic breast cancer.
PURPOSE: Randomized double blinded phase III trial to compare the effectiveness of THERATOPE vaccine therapy with that of standard vaccine therapy in treating women who have metastatic breast cancer.