Trastuzumab Plus R115777 in Treating Patients With Advanced or Metastatic Cancer

Phase I trial to study the effectiveness of trastuzumab plus R115777 in treating patients who have advanced or metastatic cancer. Monoclonal antibodies such as trastuzumab can locate tumor cells and either kill them or deliver tumor-killing substances to them without harming normal cells. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining trastuzumab with R115777 may kill more tumor cells.