1. Known central nervous system (CNS) lesions, except for asymptomatic, nonprogressive, treated brain metastases. Treatment for brain metastases must have been completed at least 4 weeks prior to Day 1 and may include whole brain radiotherapy (WBRT), radiosurgery [RS; Gamma Knife, linear accelerator (LINAC), or equivalent] or a combination as deemed appropriate by the treating physician. Dexamethasone must be discontinued at least 3 weeks prior to Day 1. Patients with CNS metastases treated by neurosurgical resection or brain biopsy performed within 3 months prior to Day 1 will be excluded.