A Review of Genetic Alteration Correlated with Primary and Acquired Resistance to EGFR-TKIs in EGFR-Mutant Non-Small Cell Lung Cancer
Abstract
Epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) significantly enhance both survival and quality of life for non-small cell lung cancer (NSCLC) patients with EGFR mutations. Nevertheless, an increasing number of patients exhibit primary or acquired resistance. Currently, discoveries of concurrent genetic alterations in EGFR and other genes besides EGFR have been made. Several studies have demonstrated an association between these alterations and resistance to EGFR-TKI. Therefore, it is crucial to gain more understanding of gene alterations and their impact on the effectiveness of EGFR-TKI treatment. In this review, concurrent gene alterations that can predict primary and acquired resistance to EGFR-TKIs in advanced NSCLC are discussed. This may assist clinicians in selecting the appropriate treatment for patients who have failed to respond to EGFR-TKIs.
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