Cited by 4,338Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchLung Cancer Research Studies

EGF receptor gene mutations are common in lung cancers from “never smokers” and are associated with sensitivity of tumors to gefitinib and erlotinib

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Pao, William, Miller, Vincent, Zakowski, Maureen, Doherty, Jennifer, Politi, Katerina, Sarkaria, Inderpal, Singh, Bhuvanesh, Heelan, Robert +7 more·2004·Proceedings of the National Academy of Sciences

Abstract

Somatic mutations in the tyrosine kinase (TK) domain of the epidermal growth factor receptor (EGFR) gene are reportedly associated with sensitivity of lung cancers to gefitinib (Iressa), kinase inhibitor. In-frame deletions occur in exon 19, whereas point mutations occur frequently in codon 858 (exon 21). We found from sequencing the EGFR TK domain that 7 of 10 gefitinib-sensitive tumors had similar types of alterations; no mutations were found in eight gefitinib-refractory tumors ( P = 0.004). Five of seven tumors sensitive to erlotinib (Tarceva), a related kinase inhibitor for which the clinically relevant target is undocumented, had analogous somatic mutations, as opposed to none of 10 erlotinib-refractory tumors ( P = 0.003). Because most mutation-positive tumors were adenocarcinomas from patients who smoked <100 cigarettes in a lifetime (“never smokers”), we screened EGFR exons 2-28 in 15 adenocarcinomas resected from untreated never smokers. Seven tumors had TK domain mutations, in contrast to 4 of 81 non-small cell lung cancers resected from untreated former or current smokers ( P = 0.0001). Immunoblotting of lysates from cells transiently transfected with various EGFR constructs demonstrated that, compared to wild-type protein, an exon 19 deletion mutant induced diminished levels of phosphotyrosine, whereas the phosphorylation at tyrosine 1092 of an exon 21 point mutant was inhibited at 10-fold lower concentrations of drug. Collectively, these data show that adenocarcinomas from never smokers comprise a distinct subset of lung cancers, frequently containing mutations within the TK domain of EGFR that are associated with gefitinib and erlotinib sensitivity.

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Authors
Pao, W., Miller, V., Zakowski, M., Doherty, J., Politi, K., Sarkaria, I., Singh, B., Heelan, R., Rusch, V., Fulton, L., Mardis, E., Kupfer, D., Wilson, R., Kris, M., & Varmus, H.
Affiliations
Memorial Sloan Kettering Cancer Center (US)
Venue
Proceedings of the National Academy of Sciences
Published
2004-08-25
Volume
101
Issue
36
Pages
13306-13311
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2139236349
Cited by
4,338
References
31
Citations by year
2026: 40 · 2025: 59 · 2024: 68 · 2023: 122 · 2022: 129 · 2021: 108 · 2020: 134 · 2019: 138 · 2018: 188 · 2017: 178 · 2016: 220 · 2015: 280 · 2014: 272 · 2013: 289 · 2012: 284
FWCI
227.94
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • AstraZeneca
  • Memorial Sloan-Kettering Cancer Center
  • Alvin J. Siteman Cancer Center
  • U.S. Food and Drug Administration
  • Genentech
  • National Cancer Institute (CA009512, T32CA009512)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Health Sciences › Medicine › Oncology › Lung Cancer Research Studies
Keywords
EGFR mutation, epidermal growth factor receptor, non-small cell lung cancer, never smokers, gefitinib sensitivity, tyrosine kinase inhibitors, exon 19 deletion, lung adenocarcinoma, tyrosine kinase domain, tyrosine phosphorylation
MeSH terms
Erlotinib Hydrochloride, Gefitinib, Adenocarcinoma, Amino Acid Sequence, Base Sequence, Carcinoma, Non-Small-Cell Lung, Female, Humans, Lung Neoplasms, Male, Molecular Sequence Data, Mutation, Quinazolines, ErbB Receptors

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