Ispinesib In Patients With Advanced Or Metastatic Non-Small Cell Lung Cancer

This study was designed to determine how effective and safe Ispinesib is in treating locally advanced or metastatic Non-small Cell Lung cancer in patients who have received a platinum-based chemotherapy and whose disease continues to progress. Treatment involves a 1-hr treatment given intravenously (IV), repeated once every 21 days. A patient may continue treatment as long as they are benefiting from the treatment. Blood samples will be taken at specific times over 24 hr period to measure the amount of drug in your body at specific times after the drug is given. Blood samples will also be taken for routine lab tests such as complete blood counts and clinical chemistries. Physical exams will be performed before each treatment.