9569 Background: Erlotinib is indicated in first line treatment for patients with Non-Small-Cell-Lung cancer (NSCLC) harbouring EGFR mutation. Addition of anti-VEGF in combination with erlotinib in this setting is controversial. Methods: We performed a meta-analysis of randomized trials comparing VEGF inhibitor plus erlotinib with erlotinib alone in first line treatment for advanced NSCLC harbouring EGFR mutation. The outcomes included overall survival (OS), progression-free survival (PFS) objective response rate (ORR), and median duration of response (DOR). A fixed-effect model was used. Results: Four studies evaluated bevacizumab + erlotinib (ARTEMIS, NEJ026, J025667, Stinchcombe et al), and one study evaluated ramucirumab + erlotinib (RELAY). These five eligible studies included 1230 non-squamous NSCLC patients (654 with Ex19del and 568 with Leu858Arg);. Most of the patients were women (63%), Asian (85%) and non-smokers (60%), with a median age of 64 years. The combination (anti-VEGF + erlotinib) was significantly associated with improvement of PFS (hazards ratio [HR]: 0.59, 95%CI: 0.51-0.69, p < 0.00001). Improvement in PFS was seen across all subgroups analyzed. Interim analysis of OS (HR: 0.90, 95%CI; 0.68-1.19, p = 0.45) and ORR (odds ratio [OR], 1.19, 0.91-1.55, p = 0.21) were not statistically significant. DOR was statistically longer with combination (p < 0.005). Conclusions: For patients with untreated advanced NSCLC with EGFR mutation, the anti-VEGF combination with erlotinib, compared with erlotinib alone, is associated with significantly improved PFS and DOR, but mature data for OS are needed to confirm the benefit of this strategy.
P1.01-77 Osimertinib in the First-Line Treatment of Non-Small Cell Lung Cancer Harboring Activating EGFR Mutation from Circulating Tumor DNA
