Journal
ANNUAL REVIEW OF PATHOLOGY: MECHANISMS OF DISEASE, VOL 6
Volume 6, Issue -, Pages 49-69Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-pathol-011110-130206
Keywords
non-small cell lung carcinoma; epidermal growth factor; receptor tyrosine kinase; tyrosine kinase inhibitor; sensitizing mutation; oncogene addiction
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Epidermal growth factor receptor (EGER) is a transmembrane protein with cytoplasmic kinase activity that transduces important growth factor signaling from the extracellular milieu to the cell. Given that more than 60% of non small cell lung carcinomas (NSCLCs) express EGER, EGER has become an important therapeutic target for the treatment of these tumors. Inhibitors that target the kinase domain of EGER have been developed and are clinically active. More importantly, such tyrosine kinase inhibitors (TKIs) are especially effective in patients whose tumors harbor activating mutations in the tyrosine kinase domain of the EGER gene. More recent trials have suggested that for advanced NSCLC patients with EGFR mutant tumors, initial therapy with a TKI instead of chemotherapy may be the best choice of treatment. Therefore, mutation testing is mandatory to identify these patients, given that selection based only on clinico-pathologic characteristics is inadequate. We review the role of EGFR mutations in the diagnosis and management of NSCLC.
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