Lewis-Y antigen x Top II

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Monoclonal antibodies can locate tumor cells and deliver tumor-killing substances to them without harming normal cells. Combining chemotherapy with monoclonal antibody therapy may kill more tumor cells.
PURPOSE: Phase II trial to study the effectiveness of combining docetaxel and monoclonal antibody therapy in treating women who have metastatic or recurrent breast cancer.

SGN-15 is being investigated for therapy of patients with prostate cancer in combination with the cytotoxic agent, Taxotere. The study is an open label, randomized phase II study for patients with documented hormone refractory prostate cancer who have not had any prior therapy with Taxotere or Novantrone. Both SGN-15 and Taxotere will be administered weekly over two 6 week courses separated by a 2 week rest period.