Cited by 627Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchCancer Genomics and Diagnostics

Acquired Resistance to EGFR Tyrosine Kinase Inhibitors in EGFR-Mutant Lung Cancer: Distinct Natural History of Patients with Tumors Harboring the T790M Mutation

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Oxnard, Geoffrey R., Arcila, Maria E., Sima, Camelia S., Riely, Gregory J., Chmielecki, Juliann, Kris, Mark G., Pao, William, Ladanyi, Marc +1 more·2011·Clinical Cancer Research

Published version of a preprint

Abstract

Purpose: Patients with epidermal growth factor receptor (EGFR)-mutant lung adenocarcinoma develop acquired resistance to EGFR tyrosine kinase inhibitors (TKI) after a median of 10 to 16 months. In half of these cases, a second EGFR mutation, T790M, underlies acquired resistance. We undertook this study to examine the clinical course of patients harboring the T790M mutation following progression on TKI. Experimental Design: EGFR-mutant lung cancer patients with acquired resistance to EGFR TKIs were identified as part of a prospective rebiopsy protocol in which postprogression tumor specimens were collected for molecular analysis. Postprogression survival and characteristics of disease progression were compared in patients with and without T790M. Results: We identified T790M in the initial rebiopsy specimens from 58 of 93 patients (62%, 95% CI: 52–72). T790M was more common in biopsies of lung/pleura tissue and lymph nodes than in more distant sites (P = 0.014). Median postprogression survival was 16 months (interquartile range = 9–29 months); patients with T790M had a significantly longer postprogression survival (P = 0.036). Patients without T790M more often progressed in a previously uninvolved organ system (P = 0.014) and exhibited a poorer performance status at time of progression (P = 0.007). Conclusions: Among patients with acquired resistance to EGFR TKIs, the presence of T790M defines a clinical subset with a relatively favorable prognosis and more indolent progression. Knowledge of T790M status is therefore important both for the clinical care of these patients and for the optimal design and interpretation of clinical trials in this setting. Clin Cancer Res; 17(6); 1616–22. ©2010 AACR.

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Authors
Oxnard, G. R., Arcila, M. E., Sima, C. S., Riely, G. J., Chmielecki, J., Kris, M. G., Pao, W., Ladanyi, M., & Miller, V. A.
Affiliations
Memorial Sloan Kettering Cancer Center (US)
Corresponding author
Miller, Vincent A.
Venue
Clinical Cancer Research
Published
2011-03-15
Volume
17
Issue
6
Pages
1616-1622
ISSN
  • 1078-0432 (ISSN-L)
  • 1557-3265
OpenAlex
W2138089710
Cited by
627
References
44
Citations by year
2026: 15 · 2025: 18 · 2024: 16 · 2023: 31 · 2022: 23 · 2021: 54 · 2020: 59 · 2019: 51 · 2018: 64 · 2017: 58 · 2016: 47 · 2015: 40 · 2014: 38 · 2013: 56 · 2012: 39
FWCI
29.77
Type
journal article
Language
en
Open access
Locations
  • Clinical Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Cancer Institute (R01CA121210, P01CA129243, R21CA115051, U54CA143798)
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 tyrosine kinase inhibitors, acquired drug resistance, EGFR-mutant lung adenocarcinoma, T790M mutation, post-progression survival, disease progression patterns, performance status, repeat biopsy, prognostic factors
MeSH terms
Adenocarcinoma, Antineoplastic Agents, Biopsy, Female, Humans, Lung Neoplasms, Male, Mutation, Prognosis, Prospective Studies, Time Factors, Disease Progression, Drug Resistance, Neoplasm, ErbB Receptors

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