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The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

Epidermal Growth Factor Receptor Mutations and Gene Amplification in Non–Small-Cell Lung Cancer: Molecular Analysis of the IDEAL/INTACT Gefitinib Trials

Bell, Daphne W., Lynch, Thomas J., Haserlat, Sara M., Harris, Patricia L., Okimoto, Ross A., Brannigan, Brian W., Sgroi, Dennis C., Muir, Beth, Riemenschneider, Markus J., Iacona, Renee Bailey, Krebs, Annetta D., Johnson, David H., Giaccone, Giuseppe, Herbst, Roy S., Manegold, Christian, Fukuoka, Masahiro, Kris, Mark G., Baselga, José, Ochs, Judith S., Haber, Daniel A.·2005·Journal of Clinical Oncology

Abstract

Purpose: Most cases of non–small-cell lung cancer (NSCLC) with dramatic responses to gefitinib have specific activating mutations in the epidermal growth factor receptor (EGFR), but the predictive value of these mutations has not been defined in large clinical trials. The goal of this study was to determine the contribution of molecular alterations in EGFR to response and survival within the phase II (IDEAL) and phase III (INTACT) trials of gefitinib. Patients and Methods: We analyzed the frequency of EGFR mutations in lung cancer specimens from both the IDEAL and INTACT trials and compared it with EGFR gene amplification, another genetic abnormality in NSCLC. Results: EGFR mutations correlated with previously identified clinical features of gefitinib response, including adenocarcinoma histology, absence of smoking history, female sex, and Asian ethnicity. No such association was seen in patients whose tumors had EGFR amplification, suggesting that these molecular markers identify different biologic subsets of NSCLC. In the IDEAL trials, responses to gefitinib were seen in six of 13 tumors (46%) with an EGFR mutation, two of seven tumors (29%) with amplification, and five of 56 tumors (9%) with neither mutation nor amplification (P = .001 for either EGFR mutation or amplification v neither abnormality). Analysis of the INTACT trials did not show a statistically significant difference in response to gefitinib plus chemotherapy according to EGFR genotype. Conclusion: EGFR mutations and, to a lesser extent, amplification appear to identify distinct subsets of NSCLC with an increased response to gefitinib. The combination of gefitinib with chemotherapy does not improve survival in patients with these molecular markers.

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Metadata

Authors
Bell, D. W., Lynch, T. J., Haserlat, S. M., Harris, P. L., Okimoto, R. A., Brannigan, B. W., Sgroi, D. C., Muir, B., Riemenschneider, M. J., Iacona, R. B., Krebs, A. D., Johnson, D. H., Giaccone, G., Herbst, R. S., Manegold, C., Fukuoka, M., Kris, M. G., Baselga, J., Ochs, J. S., & Haber, D. A.
Venue
Journal of Clinical Oncology
Published
2005-11-01
Volume
23
Issue
31
Pages
8081-8092
ISSN
  • 0732-183X (ISSN-L)
  • 1527-7755
OpenAlex
W2118135682
Cited by
601
References
42
FWCI
59.93
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Epidermal Growth Factor Receptor Mutations and Gene Amplification in Non–Small-Cell Lung Cancer: Molecular Analysis of the IDEAL/INTACT Gefitinib Trials. https://app.cochat.ai/papers/10.1200/jco.2005.02.7078
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Bell, D. W., Lynch, T. J., Haserlat, S. M., Harris, P. L., Okimoto, R. A., Brannigan, B. W., Sgroi, D. C., Muir, B., Riemenschneider, M. J., Iacona, R. B., Krebs, A. D., Johnson, D. H., Giaccone, G., Herbst, R. S., Manegold, C., Fukuoka, M., Kris, M. G., Baselga, J., Ochs, J. S., & Haber, D. A. (2005). Epidermal Growth Factor Receptor Mutations and Gene Amplification in Non–Small-Cell Lung Cancer: Molecular Analysis of the IDEAL/INTACT Gefitinib Trials. Journal of Clinical Oncology. https://doi.org/10.1200/jco.2005.02.7078

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.