Study to Assess the Safety of Escalating Doses of AT13387 in Patients With Metastatic Solid Tumors

Two dosing schedules will be evaluated; twice or once weekly dosing, on three weeks out of four. The starting dose for the once weekly schedule was 10mg/m2/dose, given as one hour intravenous (IV) infusions on Days 1, 4, 8, 11, 15 and 18 of a twenty-eight day cycle. The starting dose for the twice weekly schedule, given as one hour intravenous (IV) infusions on Days 1, 8 and 15 of a twenty-eight day cycle, will be 150mg/m2/dose

Intravenous infusion over one hour on days 1, 4, 8, 11, 15 and 18, every four weeks or intravenous infusion over one hour on days 1, 8 and 15, every four weeks . Treatment may be continued indefinitively in the presence of clinical benefit