Cited by 2,454Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchCancer Genomics and Diagnostics

Analysis of Tumor Specimens at the Time of Acquired Resistance to EGFR-TKI Therapy in 155 Patients with EGFR -Mutant Lung Cancers

Open access
Yu, Helena A., Arcila, Maria E., Rekhtman, Natasha, Sima, Camelia S., Zakowski, Maureen F., Pao, William, Kris, Mark G., Miller, Vincent A. +2 more·2013·Clinical Cancer Research

Abstract

Purpose: All patients with EGF receptor (EGFR)–mutant lung cancers eventually develop acquired resistance to EGFR tyrosine kinase inhibitors (TKI). Smaller series have identified various mechanisms of resistance, but systematic evaluation of a large number of patients to definitively establish the frequency of various mechanisms has not been conducted. Experimental Design: Patients with lung adenocarcinomas and acquired resistance to erlotinib or gefitinib enrolled onto a prospective biopsy protocol and underwent a rebiopsy after the development of acquired resistance. Histology was reviewed. Samples underwent genotyping for mutations in EGFR, AKT1, BRAF, ERBB2, KRAS, MEK1, NRAS and PIK3CA, and FISH for MET and HER2. Results: Adequate tumor samples for molecular analysis were obtained in 155 patients. Ninety-eight had second-site EGFR T790M mutations [63%; 95% confidence interval (CI), 55%–70%] and four had small cell transformation (3%, 95% CI, 0%–6%). MET amplification was seen in 4 of 75 (5%; 95% CI, 1%–13%). HER2 amplification was seen in 3 of 24 (13%; 95% CI, 3%–32%). We did not detect any acquired mutations in PIK3CA, AKT1, BRAF, ERBB2, KRAS, MEK1, or NRAS (0 of 88, 0%; 95% CI, 0%–4%). Overlap among mechanisms of acquired resistance was seen in 4%. Conclusions: This is the largest series reporting mechanisms of acquired resistance to EGFR-TKI therapy. We identified EGFR T790M as the most common mechanism of acquired resistance, whereas MET amplification, HER2 amplification, and small cell histologic transformation occur less frequently. More comprehensive methods to characterize molecular alterations in this setting are needed to improve our understanding of acquired resistance to EGFR-TKIs. Clin Cancer Res; 19(8); 2240–7. ©2013 AACR.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1158/1078-0432.ccr-12-2246

Cites

40 of 40 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. [17]Pao W Miller VA Politi KA Riely GJ Somwar R Zakowski MF Acquired resistance of lung adenocarcinomas to gefitinib or erlotinib is associated with a second mutation in the EGFR kinase domain PLoS Med 2005 2 225 35 PMC549606 15737014
  2. [20]Bean J Brennan C Shih JH Riely G Viale A Wang L MET amplification occurs with or without T790M mutations in EGFR mutant lung tumors with acquired resistance to gefitinib or erlotinib Proc Natl Acad Sci 2007 104 20932 7 18093943 PMC2409244

Cited by

Sorted by citations

Authors
Yu, H. A., Arcila, M. E., Rekhtman, N., Sima, C. S., Zakowski, M. F., Pao, W., Kris, M. G., Miller, V. A., Ladanyi, M., & Riely, G. J.
Affiliations
Memorial Sloan Kettering Cancer Center (US)
Corresponding author
Riely, Gregory J.
Venue
Clinical Cancer Research
Published
2013-04-15
Volume
19
Issue
8
Pages
2240-2247
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2154149901
Cited by
2,454
References
40
Citations by year
2026: 91 · 2025: 122 · 2024: 138 · 2023: 167 · 2022: 221 · 2021: 241 · 2020: 261 · 2019: 230 · 2018: 257 · 2017: 277 · 2016: 187 · 2015: 137 · 2014: 89 · 2013: 32 · 2012: 1
FWCI
120.83
Type
journal article
Language
en
Open access
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (R01CA121210, P01CA129243, R21CA115051, P30CA008748, T32CA009207, R25CA020449)
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
acquired resistance, EGFR tyrosine kinase inhibitors, EGFR-mutant lung cancer, lung adenocarcinoma, T790M mutation, MET amplification, HER2 amplification, erlotinib, gefitinib, repeat biopsy, molecular mechanisms of resistance
MeSH terms
Erlotinib Hydrochloride, Gefitinib, Adenocarcinoma, Adult, Aged, Aged, 80 and over, Biopsy, DNA Mutational Analysis, Female, Humans, Immunohistochemistry, Lung, Lung Neoplasms, Male, Middle Aged, Mutation, Quinazolines, In Situ Hybridization, Fluorescence, Erb-b2 Receptor Tyrosine Kinases, CD56 Antigen, Drug Resistance, Neoplasm, Ki-67 Antigen, Proto-Oncogene Proteins c-met, Protein Kinase Inhibitors, Kaplan-Meier Estimate, ErbB Receptors

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review