Evidence map›Paper›PMID 29851970›Full record

ArticlePloS one2018

Methylation of L1RE1, RARB, and RASSF1 function as possible biomarkers for the differential diagnosis of lung cancer.

R F H Walter, P Rozynek, S Casjens, R Werner, F D Mairinger, E J M Speel, A Zur Hausen, S Meier, J Wohlschlaeger, D Theegarten and 4 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

27 citing papers in PubMed, 40 citations in OpenAlex.

  1. Review
  2. High-Penetrance Rare Variants Underlying Familial Lung Cancer Risk: Insights From Genetic Epidemiology of Lung Cancer Consortium.Journal of thoracic oncology : official publication of the International Association for the Study of Lung Cancer · 2026
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  15. DNA methylation in pulmonary fibrosis and lung cancer.Expert review of respiratory medicine · 2022
    Review
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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

14 authors at 4 institutions in 2 countries.

R F H WalterRuhrlandklinik, West German Lung Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.ORCID 0000-0003-3725-7064
P RozynekInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
S CasjensInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
R WernerInstitute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
F D MairingerInstitute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
E J M SpeelDepartment of Pathology, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands.
A Zur HausenDepartment of Pathology, GROW-School for Oncology & Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands.
S MeierInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
J WohlschlaegerInstitute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
D TheegartenInstitute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
T BehrensInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
K W SchmidInstitute of Pathology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.
T BrüningInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
G JohnenInstitute for Prevention and Occupational Medicine of the German Social Accident Insurance, Institute of the Ruhr-University Bochum (IPA), Bochum, Germany.
Institute for Prevention and Occupational Medicine · DEUniversity of Duisburg-Essen · DEMaastricht University · NLRuhrlandklinik · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLung cancer is the major cause of cancer-related deaths worldwide. Differential diagnosis can be difficult, especially when only small samples are available. Epigenetic changes are frequently tissue-specific events in carcinogenesis and hence may serve as diagnostic biomarkers. MATERIAL AND

methods138 representative formalin-fixed, paraffin-embedded (FFPE) tissues (116 lung cancer cases and 22 benign controls) were used for targeted DNA methylation analysis via pyrosequencing of ten literature-derived methylation markers (APC, CDH1, CDKN2A, EFEMP1, FHIT, L1RE1, MGMT, PTEN, RARB, and RASSF1). Methylation levels were analyzed with the Classification and Regression Tree Algorithm (CART), Conditional Interference Trees (ctree) and ROC. Validation was performed with additional 27 lung cancer cases and 38 benign controls. TCGA data for 282 lung cancer cases was included in the analysis.

resultsCART and ctree analysis identified the combination of L1RE1 and RARB as well as L1RE1 and RASSF1 as independent methylation markers with high discriminative power between tumor and benign tissue (for each combination, 91% specificity and 100% sensitivity). L1RE1 methylation associated significantly with tumor type and grade (p<0.001) with highest methylation in the control group. The opposite was found for RARB (p<0.001). RASSF1 methylation increased with tumor type and grade (p<0.001) with strongest methylation in neuroendocrine tumors (NET).

conclusionHypomethylation of L1RE1 is frequent in tumors compared to benign controls and associates with higher grade, whereas increasing methylation of RARB is an independent marker for tumors and higher grade. RASSF1 hypermethylation was frequent in tumors and most prominent in NET making it an auxiliary marker for separation of NSCLC and NET. L1RE1 in combination with either RARB or RASSF1 could function as biomarkers for separating lung cancer and non-cancerous tissue and could be useful for samples of limited size such as biopsies.

Indexed as

DNA MethylationAdenocarcinomaAdultAgedBiomarkers, TumorCarcinoma, Large CellCarcinoma, Non-Small-Cell LungCarcinoma, Squamous CellCase-Control StudiesDiagnosis, DifferentialEpigenesis, GeneticFemaleHumansLung NeoplasmsMaleMiddle AgedBiomarkers, TumorL1RE1 protein, humanNuclear ProteinsRASSF1 protein, humanReceptors, Retinoic Acidretinoic acid receptor betaRNA-Binding ProteinsTumor Suppressor Proteins

Identifiers

PMID29851970
PMCPMC5978787
OpenAlexW2805807916

What OpenQuestion holds

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LicenceCC BY
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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.