Osimertinib With or Without Bevacizumab as Initial Treatment for Patients With EGFR-Mutant Lung Cancer

Inclusion Criteria: * Patient must have a pathologically-confirmed diagnosis of non-squamous, non-small cell lung cancer (NSCLC) * Patient must have advanced disease, defined as - either stage IV disease, stage IIIB disease not amenable to definitive multi-modality therapy, or recurrent disease after a prior diagnosis of stage I-III disease. All staging is via the American Joint Committee on Cancer (AJCC)/International Association for the Study of Lung Cancer (IASLC) 8th edition staging criteria * Patient must have somatic activating sensitizing mutation in EGFR (e.g. but not limited to Exon 19 deletion, L858R, E709X, G719X, exon 19 insertions, L861Q, S768I). Patients with non-sensitizing mutations in EGFR (EGFR exon 20 insertions) are not eligible. Test results originating from a Clinical Laboratory Improvement Act (CLIA)-certified or similarly accredited laboratory are acceptable; no specific assay is mandated. Plasma, cytology, or tumor tissue can be utilized for mutation testing * Patient must not have received any prior treatment with an anti-VEGF agent * NOTE: Prior treatment with an EGFR TKI is not allowed, however if a candidate for this study has already started osimertinib within 21 days prior to randomization, the exact osimertinib start date is known, and the patient had the required study baseline imaging completed prior to the osimertinib start date, the patient will be eligible * Patients that have received prior radiation therapy are eligible. Radiation (l…