Cited by 130Lung Cancer Treatments and MutationsLung Cancer Diagnosis and TreatmentHER2/EGFR in Cancer Research

Chemotherapy With Erlotinib or Chemotherapy Alone in Advanced Non-Small Cell Lung Cancer With Acquired Resistance to EGFR Tyrosine Kinase Inhibitors

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Goldberg, Sarah B., Oxnard, Geoffrey R., Digumarthy, Subba, Muzikansky, Alona, Jackman, David M., Lennes, Inga T., Sequist, Lecia V.·2013·The Oncologist

Abstract

Purpose.: Epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer has an oncogene-addicted biology that confers sensitivity to EGFR tyrosine kinase inhibitors (TKIs). Published data suggest that EGFR addiction persists after development of TKI acquired resistance, leading many clinicians to continue TKI with subsequent chemotherapy; however, this strategy has not been formally evaluated. Methods.: We retrospectively reviewed an institutional database to identify patients with advanced EGFR mutation with acquired resistance who subsequently received chemotherapy. Patients were classified as receiving chemotherapy with continued erlotinib or chemotherapy alone. We assessed differences in outcomes between the two strategies. Results.: Seventy-eight patients were included, 34 treated with chemotherapy and erlotinib and 44 treated with chemotherapy alone. Objective response rate was evaluable in 57 patients and was 41% for those treated with chemotherapy and erlotinib and 18% for those treated with chemotherapy alone. After adjusting for chemotherapy regimen and length of initial TKI course, the odds ratio for the response rate was 0.20 (95% confidence interval: 0.05–0.78; p = .02) favoring treatment with chemotherapy and erlotinib. The median progression-free survival was 4.4 months on chemotherapy and erlotinib and 4.2 months on chemotherapy alone (adjusted hazard ratio = 0.79; 95% confidence interval: 0.48–1.29; p = .34). There was no difference in overall survival. Conclusion.: This is the first study, to our knowledge, to demonstrate that continuation of EGFR TKI with chemotherapy in patients with acquired resistance improves outcomes compared with chemotherapy alone. We observed an improved response rate but no difference in progression-free survival or overall survival. A larger prospective clinical trial is needed to evaluate this promising strategy further.

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  • Prior data on cytotoxic chemotherapy for acquired resistance to EGFR inhibitors indicate short-lived benefit, with median progression-free survival of 4.0 to 5.5 months.

    “Existing data for cytotoxic chemotherapy in patients with acquired resistance to EGFR inhibitors suggest that benefits are also of relatively short duration, with studies showing a median progression-free survival of 4.0 to 5.5 months.17,18”

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Authors
Goldberg, S. B., Oxnard, G. R., Digumarthy, S., Muzikansky, A., Jackman, D. M., Lennes, I. T., & Sequist, L. V.
Affiliations
  • Harvard University (US)
  • Brigham and Women's Hospital (US)
Corresponding author
Goldberg, Sarah B.
Venue
The Oncologist
Published
2013-09-26
Volume
18
Issue
11
Pages
1214-1220
ISSN
  • 1083-7159 (ISSN-L)
  • 1549-490X
OpenAlex
W2150371178
Cited by
130
References
34
Citations by year
2026: 3 · 2025: 1 · 2024: 4 · 2023: 3 · 2022: 7 · 2021: 5 · 2020: 4 · 2019: 10 · 2018: 7 · 2017: 16 · 2016: 11 · 2015: 24 · 2014: 27 · 2013: 6 · 2012: 2
FWCI
18.46
Type
journal article
Language
en
Open access
Locations
  • The Oncologist (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Conquer Cancer Foundation of the American Society of Clinical Oncology
  • National Cancer Institute (P50-CA090578)
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
Keywords
erlotinib, EGFR tyrosine kinase inhibitors, acquired drug resistance, EGFR-mutant non-small cell lung cancer, combination chemotherapy, objective response rate, progression-free survival, overall survival
MeSH terms
Pemetrexed, Erlotinib Hydrochloride, Adult, Aged, Aged, 80 and over, Antineoplastic Combined Chemotherapy Protocols, Carcinoma, Non-Small-Cell Lung, Female, Glutamates, Guanine, Humans, Lung Neoplasms, Male, Middle Aged, Mutation, Organoplatinum Compounds, Quinazolines, Retrospective Studies, Disease-Free Survival, Drug Resistance, Neoplasm, Protein Kinase Inhibitors, ErbB Receptors

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