Lung cancer is one of the most common types of cancer and is the most common cause of death from cancer (almost 20 percent \[%\] of cancer deaths); NSCLC accounts for 80% to 85% of lung cancers. The hypothesis is that osimertinib combined bevacizumab in patients with advanced NSCLC patients with brain metastasis characterized by EGFR mutations . Efficacy assessments will include disease assessment, symptomatic progression and patient-reported outcome. Safety assessments will include physical examinations, vital signs, electrocardiograms (ECGs), Eastern Cooperative Oncology Group (ECOG) performance status and clinical safety laboratory assessments (serum chemistry, hematology, coagulation, and urinalysis).
