2. Patients with known brain metastases will be excluded from the phase I portion of the study. In the phase II portion, patients with known CNS metastases will be limited to 20% of the patient population to accrue proportionately. Patients with CNS metastases must be stable after therapy for CNS metastases (such as surgery, radiotherapy or stereotactic radiosurgery) for > 3 month and must be off steroid treatment prior to study enrollment and must have a life expectancy of 3 months or greater to be eligible.