Cited by 146Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchLung Cancer Diagnosis and Treatment

Outcomes in patients with non-small-cell lung cancer and acquired Thr790Met mutation treated with osimertinib: a genomic study

Lin, Chia-Chi, Shih, Jin-Yuan, Yu, Chong-Jen, Ho, Chao-Chi, Liao, Wei-Yu, Lee, Jih-Hsing, Tsai, Tzu-Hsiu, Su, Kang-Yi +6 more·2018·The Lancet Respiratory Medicine

Abstract

Background Osimertinib is approved for the treatment of non-small-cell lung cancer in patients who develop the EGFR Thr790Met mutation after treatment with epidermal growth factor receptor (EGFR) tyrosine-kinase inhibitors (TKIs). We assessed outcomes in patients with non-small-cell lung cancer and the EGFR Thr790Met mutation who were treated with osimertinib, a third-generation EGFR TKI, after previous treatment failure with one or more other EGFR TKIs.Methods Eligible patients had been enrolled at one centre in the AURA study, had shown resistance to a previous EGFR TKI, and had EGFR-activating mutations and acquired Thr790Met mutation detectable in tumour tissue or plasma. Patients took 20-240 mg osimertinib per day until disease progression or development of intolerable side-effects. Plasma samples were collected every 6 weeks and tumour tissue biopsy was done at study entry and was optional after disease progression. We tested samples for resistance mechanisms, including EGFR-activating, Thr790Met, and Cys797Ser mutations, and assessed associations with overall survival, progression-free survival, and survival after disease progression.Findings Of 71 patients enrolled in AURA, 53 were eligible for this analysis. Median progression-free survival was 11·1 months (95% CI 8·4-13·9) and overall survival was 16·9 months (11·7-29·1). 47 patients had disease progression. Median overall survival after osimertinib progression was 5·4 months (95% CI 4·1-10·0). Plasma samples were available for 40 patients after disease progression. 12 (30%) of these had the Thr790Met mutation (four of whom also had Cys797Ser mutations). Patients without detectable EGFR-activating mutations in plasma before treatment had the best overall and post-progression survival (22·4 months, 95% CI 15·6-not reached, and 10·8 months, 7·2-not reached, respectively). Loss of the Thr790Met mutation but presence of EGFR-activating mutations in plasma were associated with the shortest progression-free survival (median 2·6 months, 95% CI 1·3-not reached). In 22 post-progression tumour samples, we found one squamous cell and two small-cell transformations. We detected Thr790Met in nine (50%) of 18 samples, Cys797Ser in two (17%) of 12, cMET amplification in five (50%) of ten, BRAF mutation in one (8%) of 13, and KRAS mutation in one (8%) of 13.Interpretation Heterogeneous resistance mechanisms developed in patients receiving osimertinib. Differences in resistance mechanisms might dictate future development strategies for osimertinib in clinical trials.Funding AstraZeneca, Taiwan Ministry of Science and Technology.

Integrity signals

Registry

Crossref · 10.1016/s2213-2600(17)30480-0

Cites

23 of 23 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

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?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lin, C.-C., Shih, J.-Y., Yu, C.-J., Ho, C.-C., Liao, W.-Y., Lee, J.-H., Tsai, T.-H., Su, K.-Y., Hsieh, M.-S., Chang, Y.-L., Bai, Y.-Y., Huang, D. D.-R., Thress, K. S., & Yang, J. C.-H.
Affiliations
  • National Taiwan University Hospital (TW)
  • National Taiwan University (TW)
  • AstraZeneca (United States) (US)
Corresponding author
Yang, James Chih-Hsin
Venue
The Lancet Respiratory Medicine
Publisher
Elsevier BV
Published
2018-02
Volume
6
Issue
2
Pages
107-116
ISSN
2213-2600 (ISSN-L)
OpenAlex
W2772237551
Cited by
145
References
23
Citations by year
2026: 3 · 2025: 8 · 2024: 13 · 2023: 16 · 2022: 15 · 2021: 29 · 2020: 20 · 2019: 24 · 2018: 16 · 2017: 1
FWCI
13.80
Type
journal article
Language
en
Open access
closed
Locations
  • The Lancet Respiratory Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
AstraZeneca
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
non-small cell lung cancer, osimertinib, acquired resistance, EGFR tyrosine kinase inhibitors, EGFR activating mutations, plasma biomarkers, resistance mechanisms, progression-free survival, overall survival, post-progression survival, third-generation EGFR-TKI
MeSH terms
Acrylamides, Adult, Aged, Aged, 80 and over, Aniline Compounds, Antineoplastic Agents, Carcinoma, Non-Small-Cell Lung, Female, Humans, Indoles, Lung Neoplasms, Male, Middle Aged, Mutation, Piperazines, Pyrimidines, Retrospective Studies, Genomics, 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