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Pentostatin, Cyclophosphamide, and SS1(dsFv)-PE38 Immunotoxin in Treating Patients with Mesothelioma, Lung Cancer, or Pancreatic Cancer

Trial Status: administratively complete

This pilot phase II trial studies the side effects and how well pentostatin, cyclophosphamide, and SS1(dsFv)-PE38 immunotoxin work in treating patients with mesothelioma, lung cancer, or pancreatic cancer. Pentostatin may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as cyclophosphamide, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Pentostatin and cyclophosphamide may also stop the patient’s immune system from rejecting cancer fighting antibodies. Immunotoxins, such as SS1(dsFv)-PE38 immunotoxin, can find certain tumor cells and kill them without harming normal cells. Giving pentostatin, cyclophosphamide, and SS1(dsFv)-PE38 immunotoxin may kill more tumor cells.