 This is an investigational study. Dasatinib is FDA-approved and commercially available for the treatment of various types of leukemia. Cyclophosphamide is FDA-approved and commercially available for the treatment of several types of cancer, including brain cancer and many types of blood cancers. Temsirolimus is FDA-approved and commercially available for the treatment of kidney cancer. The use of these drugs in combination against solid tumors is investigational. 