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Journal Article
Research Support, Non-U.S. Gov't
Review
Targeting EGFR L858R/T790M and EGFR L858R/T790M/C797S resistance mutations in NSCLC: Current developments in medicinal chemistry.
Medicinal Research Reviews 2018 September
Both the first-generation reversible epidermal growth factor receptor (EGFR) inhibitors gefitinib and erlotinib and the second-generation covalent epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) afatinib have significantly improved the survival of non-small-cell lung cancer (NSCLC) patients with activating EGFR mutations. However, a secondary EGFRT790M mutation leads to the clinically acquired resistance to the first- and second-generation EGFR-TKIs drugs. A number of the third-generation wild-type sparing EGFR inhibitors, for example, WZ4002, CO1686, AZD9291, HM61713, EGF816, ASP8173, and PF0674775, have been developed, among which AZD9291 has been approved by US FDA for the treatment of NSCLC patients with EGFRT790M . More recently, a tertiary EGFRC797S mutation was reported as the dominant resistance mechanism to the third-generation irreversible inhibitors. It is highly desirable to develop the fourth-generation EGFR inhibitors. This review summarizes the mechanisms of acquired resistance and the latest medicinal chemistry advances on the third- and fourth-generation EGFR inhibitors, with special attention being paid to the allosteric and reversible inhibitors combating the tertiary EGFRC797S mutation.
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