Study of XL647 in Subjects With Non-Small-Cell Lung Cancer

XL647 will be administered orally as a single agent. XL647 will be supplied as 50 mg tablets. Subjects in the Intermittent 5 \& 9 cohort will receive XL647 at a dose of 350 mg on a 5 days on and 9 days off cycle every 2 weeks for 8 weeks. Subjects in the Daily Dosing cohort will receive XL647 administered daily as a single oral dose of 300 mg. In the absence of progressive disease (PD) and unacceptable XL647-related toxicity, subjects may continue to receive XL647 treatment on their assigned dosing schedule for up to 1 year on this study. Subjects who reach 1 year of treatment with no evidence of disease progression may, with the concurrence of the investigator and the sponsor, continue to receive therapy.