JOURNAL ARTICLE
REVIEW

Second and third-generation epidermal growth factor receptor tyrosine kinase inhibitors in advanced nonsmall cell lung cancer

Bin-Chi Liao, Chia-Chi Lin, James Chih-Hsin Yang
Current Opinion in Oncology 2015, 27 (2): 94-101
25611025

PURPOSE OF REVIEW: The first-generation epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs), gefitinib and erlotinib, are effective as first-line treatment of advanced nonsmall cell lung cancer (NSCLC) harboring activating EGFR mutations (deletions in exon 19 and exon 21 L858R mutation). EGFR T790 M resistance mutation (EGFR T790 M) ultimately emerged in most of these patients. The second and third-generation EGFR-TKIs were designed to have more potent inhibition of EGFR and to overcome EGFR T790 M. This review describes the recent developments of these novel EGFR-TKIs.

RECENT FINDINGS: The second-generation EGFR-TKIs, afatinib and dacomitinib, irreversibly bind to the tyrosine kinase of EGFR and other ErbB-family members. Afatinib has been approved as first-line treatment of advanced NSCLC harboring activating EGFR mutations. Dacomitinib is under development. Third-generation EGFR-TKIs, AZD9291, CO-1686, and HM61713, inhibit both EGFR activating and resistance mutations, while sparing wild-type EGFR. In early-phase studies, these drugs demonstrated promising response rates against tumors with acquired EGFR T790 M.

SUMMARY: Second-generation EGFR-TKI, afatinib, is available as first-line treatment of advanced NSCLC harboring activating EGFR mutations. Third-generation EGFR-TKIs are under development for tumors harboring acquired EGFR T790 M.

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