Non-Small-Cell lung Cancer (NSCLC) is the most common form of lung cancer, and treatment with cytotoxic chemotherapy only provides a 10% reduction in the risk of death in patients with advanced NSCLC. One-third of all non-resectable advanced NSCLC patients in second line do not receive chemotherapy treatment at all. In the absence of treatment the Progression-Free Survival (PFS) for NSCLC patients is dismal, in the range of 6-8 weeks, and treatment only modestly improves the median PFS to 10-11 weeks. Therefore, because of an overall poorer prognosis for patients with advanced NSCLC, development of new agents is urgently needed.