Cited by 78Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchLung Cancer Diagnosis and Treatment

The DOI matches its Crossref record; 46 of the 46 references it cites were found in a registry or an index.

Sample Features Associated with Success Rates in Population-Based EGFR Mutation Testing

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Shiau, Carolyn J., Babwah, Jesse P., da Cunha Santos, Gilda, Sykes, Jenna R., Boerner, Scott L., Geddie, William R., Leighl, Natasha B., Wei, Cuihong, Kamel-Reid, Suzanne, Hwang, David M., Tsao, Ming-Sound·2014·Journal of Thoracic Oncology

Abstract

Introduction Epidermal growth factor receptor (EGFR) mutation testing has become critical in the treatment of patients with advanced non-small-cell lung cancer. This study involves a large cohort and epidemiologically unselected series of EGFR mutation testing for patients with nonsquamous non-small-cell lung cancer in a North American population to determine sample-related factors that influence success in clinical EGFR testing.Methods Data from consecutive cases of Canadian province-wide testing at a centralized diagnostic laboratory for a 24-month period were reviewed. Samples were tested for exon-19 deletion and exon-21 L858R mutations using a validated polymerase chain reaction method with 1% to 5% detection sensitivity.Results From 2651 samples submitted, 2404 samples were tested with 2293 samples eligible for analysis (1780 histology and 513 cytology specimens). The overall test-failure rate was 5.4% with overall mutation rate of 20.6%. No significant differences in the failure rate, mutation rate, or mutation type were found between histology and cytology samples. Although tumor cellularity was significantly associated with test-success or mutation rates in histology and cytology specimens, respectively, mutations could be detected in all specimen types. Significant rates of EGFR mutation were detected in cases with thyroid transcription factor (TTF)-1-negative immunohistochemistry (6.7%) and mucinous component (9.0%).Conclusions EGFR mutation testing should be attempted in any specimen, whether histologic or cytologic. Samples should not be excluded from testing based on TTF-1 status or histologic features. Pathologists should report the amount of available tumor for testing. However, suboptimal samples with a negative EGFR mutation result should be considered for repeat testing with an alternate sample.

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Metadata

Authors
Shiau, C. J., Babwah, J. P., da Cunha Santos, G., Sykes, J. R., Boerner, S. L., Geddie, W. R., Leighl, N. B., Wei, C., Kamel-Reid, S., Hwang, D. M., & Tsao, M.-S.
Affiliations
  • University Health Network (CA)
  • University of Toronto (CA)
Corresponding author
Tsao, Ming-Sound
Venue
Journal of Thoracic Oncology
Publisher
Elsevier BV
Published
2014-07
Volume
9
Issue
7
Pages
947-956
ISSN
1556-0864 (ISSN-L)
OpenAlex
W2003360283
Cited by
78
References
46
Citations by year
2026: 1 · 2025: 4 · 2024: 2 · 2023: 6 · 2022: 10 · 2021: 7 · 2020: 5 · 2019: 5 · 2018: 10 · 2017: 12 · 2016: 8 · 2015: 5 · 2014: 2
FWCI
7.21
Type
journal article
Language
en
Open access
Locations
  • Journal of Thoracic Oncology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • AstraZeneca Canada
  • Ontario Ministry of Health and Long-Term Care
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 › Pulmonary and Respiratory Medicine › Lung Cancer Diagnosis and Treatment
Keywords
EGFR mutation testing, non-small cell lung cancer, test failure rate, tumor cellularity, cytology specimens, exon 19 deletion, L858R mutation, retesting
MeSH terms
Thyroid Nuclear Factor 1, Base Sequence, Biopsy, Needle, Canada, Carcinoma, Non-Small-Cell Lung, Cytological Techniques, DNA Mutational Analysis, Exons, Female, Genetic Testing, Humans, Lung Neoplasms, Male, Nuclear Proteins, Pneumonectomy, Retrospective Studies, Transcription Factors, Sequence Deletion, ErbB Receptors

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