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Cochrane Database of Systematic Reviews

First‐line treatment of advanced epidermal growth factor receptor (EGFR) mutation positive non‐squamous non‐small cell lung cancer

Overview of attention for article published in Cochrane database of systematic reviews, May 2016
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About this Attention Score

  • Above-average Attention Score compared to outputs of the same age (64th percentile)

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6 X users
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Citations

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274 Mendeley
Title
First‐line treatment of advanced epidermal growth factor receptor (EGFR) mutation positive non‐squamous non‐small cell lung cancer
Published in
Cochrane database of systematic reviews, May 2016
DOI 10.1002/14651858.cd010383.pub2
Pubmed ID
Authors

Janette Greenhalgh, Kerry Dwan, Angela Boland, Victoria Bates, Fabio Vecchio, Yenal Dundar, Pooja Jain, John A Green

Abstract

Epidermal growth factor receptor (EGFR) mutation positive (M+) non-small cell lung cancer (NSCLC) is emerging as an important subtype of lung cancer comprising 10% to 15% of non-squamous tumours. This subtype is more common in women than men and is less associated with smoking. To assess the clinical effectiveness of single -agent or combination EGFR therapies used in the first-line treatment of people with locally advanced or metastatic EGFR M+ NSCLC compared with other cytotoxic chemotherapy (CTX) agents used alone or in combination, or best supportive care (BSC). The primary outcome was overall survival. Secondary outcomes included progression-free survival, response rate, toxicity, and quality of life. We conducted electronic searches of the the Cochrane Register of Controlled Trials (CENTRAL) (2015, Issue 6), MEDLINE (1946 to 1 June 2015), EMBASE (1980 to 1 June 2015), and ISI Web of Science (1899 to 1 June 2015). We also searched the conference abstracts of the American Society for Clinical Oncology and the European Society for Medical Oncology (1 June 2015); Evidence Review Group submissions to the National Institute for Health and Care Excellence; and the reference lists of retrieved articles. Parallel randomised controlled trials comparing EGFR-targeted agents (alone or in combination with cytotoxic agents or BSC) with cytotoxic chemotherapy (single or doublet) or BSC in chemotherapy-naive patients with locally advanced or metastatic (stage IIIB or IV) EGFR M+ NSCLC unsuitable for treatment with curative intent. Two review authors independently identified articles, extracted data, and carried out the 'Risk of bias' assessment. We conducted meta-analyses using a fixed-effect model unless there was substantial heterogeneity, in which case we also performed a random-effects analysis as a sensitivity analysis. Nineteen trials met the inclusion criteria. Seven of these exclusively recruited people with EGFR M+ NSCLC; the remainder recruited a mixed population and reported results for people with EGFR M+ NSCLC as subgroup analyses. The number of participants with EGFR M+ tumours totalled 2317, of whom 1700 were of Asian origin.Overall survival (OS) data showed inconsistent results between the included trials that compared EGFR-targeted treatments against cytotoxic chemotherapy or placebo.Erlotinib was the intervention treatment used in eight trials, gefitinib in seven trials, afatinib in two trials, and cetuximab in two trials. The findings of one trial (FASTACT 2) did report a statistically significant OS gain for participants treated with erlotinib plus cytotoxic chemotherapy when compared to cytotoxic chemotherapy alone, but this result was based on a small number of participants (n = 97). For progression-free survival (PFS), a pooled analysis of 3 trials (n = 378) demonstrated a statistically significant benefit for erlotinib compared with cytotoxic chemotherapy (hazard ratio (HR) 0.30; 95% confidence interval (CI) 0.24 to 0.38).In a pooled analysis with 491 participants administered gefitinib, 2 trials (IPASS and NEJSG) demonstrated a statistically significant PFS benefit of gefitinib compared with cytotoxic chemotherapy (HR 0.39; 95% CI 0.32 to 0.48).Afatinib (n = 709) showed a statistically significant PFS benefit when compared with chemotherapy in a pooled analysis of 2 trials (HR 0.42; 95% CI 0.34 to 0.53).Commonly reported grade 3/4 adverse events for afatinib, erlotinib, and gefitinib monotherapy were rash and diarrhoea. Myelosuppression was consistently worse in the chemotherapy arms, fatigue and anorexia were also associated with some chemotherapies.No statistically significant PFS or OS benefit for cetuximab plus cytotoxic chemotherapy (n = 81) compared to chemotherapy alone was reported in either of the two trials.Six trials reported on quality of life and symptom improvement using different methodologies. For each of erlotinib, gefitinib, and afatinib, 2 trials showed improvement in one or more indices for the tyrosine-kinase inhibitor (TKI) compared to chemotherapy.The quality of evidence was high for the comparisons of erlotinib and gefitinib with cytotoxic chemotherapy and for the comparison of afatinib with cytotoxic chemotherapy. Erlotinib, gefitinib, and afatinib are all active agents in EGFR M+ NSCLC patients, and demonstrate an increased tumour response rate and prolonged progression-free survival compared to cytotoxic chemotherapy. We also found a beneficial effect of the TKI compared to cytotoxic chemotherapy. However, we found no increase in overall survival for the TKI when compared with standard chemotherapy. Cytotoxic chemotherapy is less effective in EGFR M+ NSCLC than erlotinib, gefitinib, or afatinib and is associated with greater toxicity. There were no data supporting the use of monoclonal antibody therapy.

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Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 274 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Spain 1 <1%
Unknown 273 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 46 17%
Researcher 38 14%
Student > Bachelor 32 12%
Student > Ph. D. Student 25 9%
Other 17 6%
Other 42 15%
Unknown 74 27%
Readers by discipline Count As %
Medicine and Dentistry 79 29%
Nursing and Health Professions 24 9%
Biochemistry, Genetics and Molecular Biology 20 7%
Pharmacology, Toxicology and Pharmaceutical Science 14 5%
Agricultural and Biological Sciences 11 4%
Other 32 12%
Unknown 94 34%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 4. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 March 2019.
All research outputs
#8,221,102
of 25,457,858 outputs
Outputs from Cochrane database of systematic reviews
#8,904
of 11,842 outputs
Outputs of similar age
#122,005
of 350,767 outputs
Outputs of similar age from Cochrane database of systematic reviews
#192
of 263 outputs
Altmetric has tracked 25,457,858 research outputs across all sources so far. This one has received more attention than most of these and is in the 67th percentile.
So far Altmetric has tracked 11,842 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 38.9. This one is in the 21st percentile – i.e., 21% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 350,767 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 64% of its contemporaries.
We're also able to compare this research output to 263 others from the same source and published within six weeks on either side of this one. This one is in the 26th percentile – i.e., 26% of its contemporaries scored the same or lower than it.