AstraZeneca announced that the New England Journal of Medicine has published the positive results from the Medicine Publishes Results Phase III FLAURA trial which provide data for Tagrisso’s (osimertinib) use in the 1st-line treatment of adult patients with locally advanced or metastatic epidermal growth factor receptor (EGFR)-mutated non-small cell lung cancer (NSCLC). The trial showed a statistically significant, clinically meaningful progression-free survival (PFS) advantage for osimertinib, a third-generation, irreversible EGFR tyrosine kinase inhibitor (TKI), compared with current 1st-line EGFR-TKIs, erlotinib or gefitinib.Dr. Suresh S. Ramalingam, Principal Investigator of the FLAURA trial, from the Winship Cancer Institute of Emory University, Atlanta, USA, said: “The results of the FLAURA trial may herald a shift in how we treat patients with EGFR-mutated NSCLC. The data demonstrate superiority of osimertinib compared to current standard EGFR-TKIs in the 1st-line setting.”Sean Bohen, Executive Vice President, Global Medicines Development and Chief Medical Officer at AstraZeneca, said: “EGFR-mutated NSCLC patients need new therapies that improve outcomes. The data published in NEJM further emphasise the potential of osimertinibas a new treatment standardin this patient population.”In the Phase III FLAURA trial, osimertinib significantly improved PFS compared to erlotinib or gefitinib in previously untreated patients with locally advanced or metastatic EGFR-mutated (EGFRm) NSCLC. Median PFS was nearly doubled at 18.9 months for osimertinib compared with 10.2 months for the EGFR-TKI comparator arm (PFS, hazard ratio [HR] 0.46; 95% confidence interval [CI] 0.37-0.57; p<0.001). Preliminary overall survival (OS) data favoured osimertinib with a 37% reduction in the risk of death (HR 0.63, 95% CI 0.45-0.88; p=0.007 [not significant]) at the interim OS analysis (25% maturity).The FLAURA safety data for osimertinib were in line with those observed in prior clinical trials. Osimertinib was well tolerated, with less frequent grade 3 or higher adverse events (AEs) than with standard EGFR-TKIs (34% vs. 45%). In all patients, the most common AEs were rash or acne (58% [1% Grade ≥3] for osimertinib vs. 78% [7% Grade ≥3] for the comparator arm), diarrhoea (58% [2% Grade ≥3] for osimertinib vs. 57% [2% Grade ≥3] for the comparator arm), and dry skin (36% [<1% Grade ≥3] for osimertinib vs. 36% [1% Grade ≥3] for the comparator arm).AstraZeneca presented the full FLAURA data at the Presidential Symposium of the European Society of Medical Oncology (ESMO) 2017 Congress in Madrid, Spain, in September.
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