Evidence map›Paper›PMID 25232729›Full record

SynthesisPloS one2014

MET gene copy number predicts worse overall survival in patients with non-small cell lung cancer (NSCLC); a systematic review and meta-analysis.

Anastasios Dimou, Lemuel Non, Young Kwang Chae, William J Tester, Konstantinos N Syrigos

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 2 pooled it
4.1field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 2 syntheses or guidelines pooled it, 53 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Journal of personalized medicine · 2021
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  11. Has programmed cell death ligand-1Translational lung cancer research · 2021
    Review
  12. Article
  13. Review
  14. Review
  15. Article
  16. Top-levelTranslational lung cancer research · 2020
    Article
  17. Article
  18. Review
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 4 institutions in 2 countries.

Anastasios DimouDepartment of Medicine, Albert Einstein Medical Center, Philadelphia, Pennsylvania, United States of America.
Lemuel NonDepartment of Medicine, Albert Einstein Medical Center, Philadelphia, Pennsylvania, United States of America.
Young Kwang ChaeNorthwestern Medicine Developmental Therapeutics Institute (NMDTI), Northwestern University Feinberg School of Medicine, Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois, United States of America.
William J TesterAlbert Einstein Healthcare Network, Cancer Center, Albert Einstein Medical Center, Philadelphia, Pennsylvania, United States of America.
Konstantinos N SyrigosSotiria General Hospital Cancer Center, The University of Athens, Athens, Greece.
Einstein Medical Center Philadelphia · USEinstein Healthcare Network · USNorthwestern University · USSotiria General Hospital · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesMET is a receptor present in the membrane of NSCLC cells and is known to promote cell proliferation, survival and migration. MET gene copy number is a common genetic alteration and inhibition o MET emerges as a promising targeted therapy in NSCLC. Here we aim to combine in a meta-analysis, data on the effect of high MET gene copy number on the overall survival of patients with resected NSCLC.

methodsTwo independent investigators applied parallel search strategies with the terms "MET AND lung cancer", "MET AND NSCLC", "MET gene copy number AND prognosis" in PubMed through January 2014. We selected the studies that investigated the association of MET gene copy number with survival, in patients who received surgery.

resultsAmong 1096 titles that were identified in the initial search, we retrieved 9 studies on retrospective cohorts with adequate retrievable data regarding the prognostic impact of MET gene copy number on the survival of patients with NSCLC. Out of those, 6 used FISH and the remaining 3 used RT PCR to assess the MET gene copy number in the primary tumor. We calculated the I2 statistic to assess heterogeneity (I2 = 72%). MET gene copy number predicted worse overall survival when all studies were combined in a random effects model (HR = 1.78, 95% CI 1.22-2.60). When only the studies that had at least 50% of adenocarcinoma patients in their populations were included, the effect was significant (five studies, HR 1.55, 95% CI 1.23-1.94). This was not true when we included only the studies with no more than 50% of the patients having adenocarcinoma histology (four studies HR 2.18, 95% CI 0.97-4.90).

conclusionsHigher MET gene copy number in the primary tumor at the time of diagnosis predicts worse outcome in patients with NSCLC. This prognostic impact may be adenocarcinoma histology specific.

Indexed as

Anaplastic Lymphoma KinaseCarcinoma, Non-Small-Cell LungErbB ReceptorsGene DosageHumansLung NeoplasmsProtein-Tyrosine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-metReceptor Protein-Tyrosine KinasesRetrospective StudiesSurvival AnalysisTreatment OutcomeAnaplastic Lymphoma KinaseErbB ReceptorsMET protein, humanProtein-Tyrosine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-metReceptor Protein-Tyrosine KinasesROS1 protein, human

Identifiers

PMID25232729
PMCPMC4169409
OpenAlexW2041420833

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.