Acquired BRAF G469A Mutation as a Resistance Mechanism to First-Line Osimertinib Treatment in NSCLC Cell Lines Harboring an EGFR Exon 19 Deletion
2019
Background
Osimertinib is a new third-generation, epidermal growth factor receptor-tyrosine kinase inhibitor highly selective for the epidermal growth factor receptor with both activating and T790M mutations. A recent phase III trial showed a statistically significant progression-free survival benefit with osimertinib vs. gefitinib or erlotinib as first-line treatment for EGFR-mutated non-small cell lung cancer, and preliminary data are available on resistance mechanisms to first-line osimertinib therapy.
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