To determine the antitumor activity, based on the confirmed objective response rate, of KOS-862, administered intravenously weekly for 3 weeks every 4 weeks, in patients with non-small cell lung cancer (NSCLC) whose disease has progressed following initial chemotherapy for advanced or metastatic disease.
Inclusion Criteria: * At least 18 years of age * Measurable disease * One previous treatment of a platinum based drug such as cisplatin or carboplatin * At least 3 weeks since last surgery/radiation/chemotherapy Exclusion Criteria: * Brain metastases * Changes in the rhythm of your heart that are considered significant as determined by an ECG tracing