3. Uncontrolled, untreated brain metastasis. Patients with treated/controlled and asymptomatic CNS metastases may participate in this trial. The patient must have completed any prior treatment for CNS metastases ≥ 28 days (must include radiotherapy and/or surgery) and, if on corticosteroid therapy, should be receiving a stable low dose (e.g. dexamethasone 4 mg or equivalent dose of another corticosteroid for at least 14 days before start of study treatment).