Cited by 5,508Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchLung Cancer Diagnosis and Treatment

Osimertinib in Untreated EGFR -Mutated Advanced Non–Small-Cell Lung Cancer

Open access
Soria, Jean-Charles, Ohe, Yuichiro, Vansteenkiste, Johan, Reungwetwattana, Thanyanan, Chewaskulyong, Busyamas, Lee, Ki Hyeong, Dechaphunkul, Arunee, Imamura, Fumio +16 more·2018·New England Journal of Medicine

Abstract

BACKGROUND: Osimertinib is an oral, third-generation, irreversible epidermal growth factor receptor tyrosine kinase inhibitor (EGFR-TKI) that selectively inhibits both EGFR-TKI-sensitizing and EGFR T790M resistance mutations. We compared osimertinib with standard EGFR-TKIs in patients with previously untreated, EGFR mutation-positive advanced non-small-cell lung cancer (NSCLC). METHODS: In this double-blind, phase 3 trial, we randomly assigned 556 patients with previously untreated, EGFR mutation-positive (exon 19 deletion or L858R) advanced NSCLC in a 1:1 ratio to receive either osimertinib (at a dose of 80 mg once daily) or a standard EGFR-TKI (gefitinib at a dose of 250 mg once daily or erlotinib at a dose of 150 mg once daily). The primary end point was investigator-assessed progression-free survival. RESULTS: The median progression-free survival was significantly longer with osimertinib than with standard EGFR-TKIs (18.9 months vs. 10.2 months; hazard ratio for disease progression or death, 0.46; 95% confidence interval [CI], 0.37 to 0.57; P<0.001). The objective response rate was similar in the two groups: 80% with osimertinib and 76% with standard EGFR-TKIs (odds ratio, 1.27; 95% CI, 0.85 to 1.90; P=0.24). The median duration of response was 17.2 months (95% CI, 13.8 to 22.0) with osimertinib versus 8.5 months (95% CI, 7.3 to 9.8) with standard EGFR-TKIs. Data on overall survival were immature at the interim analysis (25% maturity). The survival rate at 18 months was 83% (95% CI, 78 to 87) with osimertinib and 71% (95% CI, 65 to 76) with standard EGFR-TKIs (hazard ratio for death, 0.63; 95% CI, 0.45 to 0.88; P=0.007 [nonsignificant in the interim analysis]). Adverse events of grade 3 or higher were less frequent with osimertinib than with standard EGFR-TKIs (34% vs. 45%). CONCLUSIONS: Osimertinib showed efficacy superior to that of standard EGFR-TKIs in the first-line treatment of EGFR mutation-positive advanced NSCLC, with a similar safety profile and lower rates of serious adverse events. (Funded by AstraZeneca; FLAURA ClinicalTrials.gov number, NCT02296125 .).

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Crossref · 10.1056/nejmoa1713137

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  • In the FLAURA trial, first-line osimertinib led to superior PFS and OS compared with a first-generation TKI (gefitinib or erlotinib).

    “in the recent FLAURA head-to-head trial, first-line treatment with osimertinib led to superior PFS and OS compared with a first-generation TKI (gefitinib or erlotinib).”

    From Afatinib for the treatment of <i>EGFR</i> mutation-positive NSCLC: A review of clinical findings (2020) · cites this paper as [13]

    The Abstract reports significantly longer progression-free survival with first-line osimertinib than with gefitinib or erlotinib. It does not establish superior overall survival: the Abstract says the interim survival data were immature and the result was nonsignificant; the Results (p. 120) give P=0.007, above the prespecified interim threshold of P<0.0015. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Patients who do not develop T790M upon progression on first- or second-generation EGFR TKIs may have been better treated with osimertinib as first-line therapy, which has shown the longest median PFS of all EGFR TKIs at 18.9 months in FLAURA.

    “Patients who do not develop T790M upon progression on first- or second-generation EGFR TKIs may have been better treated with osimertinib as first-line therapy, which has shown the longest median PFS of all EGFR TKIs, at 18.9 months (assessed by investigator review) in the FLAURA trial.”

    From Afatinib for the treatment of <i>EGFR</i> mutation-positive NSCLC: A review of clinical findings (2020) · cites this paper as [13]

    Split into 2 atoms — 0 confirmed, 2 partially supported, 0 disputed, 0 misattributed, 0 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • In the FLAURA trial, 12% of patients treated with osimertinib and 17% treated with first-generation EGFR TKIs died without commencing second-line therapy.

    “In the FLAURA trial, 12% of patients treated with osimertinib and 17% treated with first-generation EGFR TKIs died without commencing a second-line therapy.”

    From Afatinib for the treatment of <i>EGFR</i> mutation-positive NSCLC: A review of clinical findings (2020) · cites this paper as [13]

    The Results (pp. 116, 120) report deaths and initiation of subsequent anticancer therapy separately. They do not report the claimed 12% and 17% who died without starting second-line therapy; the overall death rates of 21% and 30% measure something different. (LLM, conf=0.81)

    Experimental — accuracy not yet measured
  • Osimertinib has demonstrated efficacy in patients with brain metastases and appears superior to first-generation TKIs in treating CNS metastases and reducing incidence of de novo CNS lesions.

    “osimertinib has also demonstrated efficacy in patients with brain metastases.13,81 Based on analysis of CNS activity in the FLAURA trial, osimertinib appears superior to first-generation TKIs in treating CNS metastases and in reducing the incidence of de novo CNS lesions.”

    From Afatinib for the treatment of <i>EGFR</i> mutation-positive NSCLC: A review of clinical findings (2020) · cites this paper as [13]

    The Efficacy section reports a progression-free-survival benefit in patients with or without known or treated CNS metastases, and fewer CNS progression events with osimertinib than with gefitinib or erlotinib (6% versus 15%). It does not separately establish a reduction in de novo CNS lesions. The Trial Assessments section notes that routine brain imaging was required only for patients with confirmed CNS metastases, limiting detection of new, asymptomatic lesions. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Osimertinib selectively inhibits both EGFR-TKI-sensitizing and EGFR T790M resistance mutations, with lower activity against wild-type EGFR.

    “osimertinib, selectively inhibits both EGFR-TKI-sensitizing and EGFR T790M resistance mutations, with lower activity against wild-type EGFR.”

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Authors
Soria, J.-C., Ohe, Y., Vansteenkiste, J., Reungwetwattana, T., Chewaskulyong, B., Lee, K. H., Dechaphunkul, A., Imamura, F., Nogami, N., Kurata, T., Okamoto, I., Zhou, C., Cho, B. C., Cheng, Y., Cho, E. K., Voon, P. J., Planchard, D., Su, W.-C., Gray, J. E., Lee, S.-M., Hodge, R., Marotti, M., Rukazenkov, Y., & Ramalingam, S. S.
Affiliations
  • Université Paris-Sud (FR)
  • From Gustave Roussy Cancer Campus and University Paris-Sud, Orsay, France (J.-C.S., D.P.); the Department of Thoracic Oncology, National Cancer Center Hospital, Tokyo (Y.O.), the Department of Thoracic Oncology, Osaka International Cancer Institute (F.I.), and the Department of Thoracic Oncology, Kansai Medical University Hospital (T.K.), Osaka, the Department of Thoracic Oncology, National Hospital Organization Shikoku Cancer Center, Matsuyama (N.N.), and the Research Institute for Diseases of the...
Venue
New England Journal of Medicine
Published
2018-01-11
Volume
378
Issue
2
Pages
113-125
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2770828094
Cited by
5,508
References
33
Citations by year
2026: 570 · 2025: 699 · 2024: 690 · 2023: 621 · 2022: 714 · 2021: 700 · 2020: 669 · 2019: 547 · 2018: 280 · 2017: 8 · 2016: 1
FWCI
340.91
Type
journal article
Language
en
Open access
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion, other-oa)
  • QUT ePrints (Queensland University of Technology) (submittedVersion)
  • YUHSpace (Yonsei University Medical Library) (submittedVersion, cc-by-nc-nd)
  • Lirias (submittedVersion)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion, other-oa)
  • Zurich Open Repository and Archive (University of Zurich)
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
osimertinib, EGFR-mutant non-small cell lung cancer, EGFR tyrosine kinase inhibitors, gefitinib, erlotinib, exon 19 deletion, L858R mutation, progression-free survival, objective response rate, first-line therapy, irreversible EGFR inhibitors, overall survival, duration of response
MeSH terms
Erlotinib Hydrochloride, Gefitinib, Acrylamides, Adult, Aged, Aged, 80 and over, Aniline Compounds, Antineoplastic Agents, Carcinoma, Non-Small-Cell Lung, Double-Blind Method, Female, Humans, Indoles, Lung Neoplasms, Male, Middle Aged, Mutation, Piperazines, Protein-Tyrosine Kinases, Pyrimidines, Quinazolines, Survival Rate, Disease-Free Survival, Protein Kinase Inhibitors, Kaplan-Meier Estimate, ErbB Receptors

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