Restrictive EGFR Mutation

EGFR G796D mutation mediates resistance to osimertinib

Osimertinib is an effective third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) approved in multiple countries and regions for patients with EGFR T790M mutation-positive non-small cell lung cancer (NSCLC). Despite impressive initial tumor responses, development of drug resistance ultimately limits the benefit of this compound. Mechanisms of resistance to osi...

EGFR unusual mutation status in lung adenocarcinomas

Lung cancer is the most common cause of cancer deaths in both men and women. Adenocarcinoma represents about 28% of the NSCLC cases in men and 42% in women. EGFR is a member of the ERBB family of tyrosine kinases (TK). EGFR mutations are more frequently observed in female, non-smokers, East-Asian and in patients with adenocarcinomas, and predict response to TK Inhibitors (TKIs). Sections of ade...

Including Total EGFR Staining in Scoring Improves EGFR Mutations Detection by Mutation-Specific Antibodies and EGFR TKIs Response Prediction

Epidermal growth factor receptor (EGFR) is a novel target for therapy in subsets of non-small cell lung cancer, especially adenocarcinoma. Tumors with EGFR mutations showed good response to EGFR tyrosine kinase inhibitors (TKIs). We aimed to identify the discriminating capacity of immunohistochemical (IHC) scoring to detect L858R and E746-A750 deletion mutation in lung adenocarcinoma patients a...

Title: The EGFR T790M mutation in acquired resistance to an irreversible second-generation EGFR inhibitor

The EGFR T790M mutation in acquired resistance to an irreversible second-generation EGFR inhibitor.

Molecular target therapies using first-generation, reversible epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKI), such as gefitinib or erlotinib, have been shown to be effective for patients with non-small cell lung cancer (NSCLC) who harbor activating mutations in EGFR. However, these patients eventually develop resistance to the reversible TKIs, and this has led to the d...