Cited by 991Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchCancer Genomics and Diagnostics

Activating and resistance mutations of EGFR in non-small-cell lung cancer: role in clinical response to EGFR tyrosine kinase inhibitors

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Gazdar, A F·2009·Oncogene

Abstract

The epidermal growth factor receptor tyrosine kinase inhibitors (EGFR TKIs), gefitinib and erlotinib, are reversible competitive inhibitors of the tyrosine kinase domain of EGFR that bind to its adenosine-5' triphosphate-binding site. Somatic activating mutations of the EGFR gene, increased gene copy number and certain clinical and pathological features have been associated with dramatic tumor responses and favorable clinical outcomes with these agents in patients with non-small-cell lung cancer (NSCLC). The specific types of activating mutations that confer sensitivity to EGFR TKIs are present in the tyrosine kinase (TK) domain of the EGFR gene. Exon 19 deletion mutations and the single-point substitution mutation L858R in exon 21 are the most frequent in NSCLC and are termed 'classical' mutations. The NSCLC tumors insensitive to EGFR TKIs include those driven by the KRAS and MET oncogenes. Most patients who initially respond to gefitinib and erlotinib eventually become resistant and experience progressive disease. The point mutation T790M accounts for about one half of these cases of acquired resistance. Various second-generation EGFR TKIs are currently being evaluated and may have the potential to overcome T790M-mediated resistance by virtue of their irreversible inhibition of the receptor TK domain.

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  1. Kosaka T Yatabe Y Endoh H Kuwano H Takahashi T Mitsudomi T Mutations of the epidermal growth factor receptor gene in lung cancer: biological and clinical implications Cancer Res 2004 64 8919 8923 15604253

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Authors
Gazdar, A. F.
Affiliations
The University of Texas Southwestern Medical Center (US)
Corresponding author
Gazdar, A F
Venue
Oncogene
Published
2009-08
Volume
28
Issue
S1
Pages
S24-S31
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W2007528734
Cited by
991
References
48
Citations by year
2026: 37 · 2025: 59 · 2024: 58 · 2023: 66 · 2022: 53 · 2021: 59 · 2020: 70 · 2019: 54 · 2018: 69 · 2017: 73 · 2016: 67 · 2015: 52 · 2014: 53 · 2013: 61 · 2012: 46
FWCI
7.87
Type
journal article
Language
en
Open access
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Boehringer Ingelheim
  • National Cancer Institute ((P50-CA70907, P50CA070907)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
EGFR mutation, non-small cell lung cancer, EGFR tyrosine kinase inhibitors, gefitinib, erlotinib, exon 19 deletion, L858R mutation, T790M mutation, acquired drug resistance, KRAS, MET, gene copy number
MeSH terms
Erlotinib Hydrochloride, Gefitinib, Carcinoma, Non-Small-Cell Lung, Gene Amplification, Humans, Lung Neoplasms, Proto-Oncogene Proteins, Quinazolines, Proto-Oncogene Proteins p21(ras), Treatment Outcome, Point Mutation, Sequence Deletion, Protein Structure, Tertiary, Receptors, Growth Factor, ras Proteins, Drug Resistance, Neoplasm, Proto-Oncogene Proteins c-met, Protein Kinase Inhibitors, ErbB Receptors

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