Evidence map›Paper›PMID 27733154›Full record

ArticleBMC cancer2016

Molecular profile of 5-fluorouracil pathway genes in colorectal carcinoma.

T Kunicka, P Prochazka, I Krus, P Bendova, M Protivova, S Susova, V Hlavac, V Liska, P Novak, M Schneiderova and 5 more

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
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  6. Article
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  8. Review
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  16. 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

15 authors at 3 institutions in 2 countries.

T KunickaDepartment of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.
P ProchazkaDepartment of Molecular Biology of Cancer, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 142 00, Prague 4, Czech Republic.
I KrusDepartment of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.
P BendovaBiomedical Centre, Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic.
M ProtivovaDepartment of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.
S SusovaDepartment of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.
V HlavacDepartment of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic.
V LiskaBiomedical Centre, Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic.
P NovakDeparment of Surgery, Teaching Hospital and Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic.
M SchneiderovaDepartment of Surgery, General University Hospital in Prague, First Medical Faculty, Charles University, Prague, Czech Republic.
P PituleBiomedical Centre, Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic.
J BruhaBiomedical Centre, Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic.
O VycitalBiomedical Centre, Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic.
P VodickaBiomedical Centre, Medical School Pilsen, Charles University in Prague, Pilsen, Czech Republic. pvodicka@biomed.cas.cz.
P SoucekDepartment of Toxicogenomics, National Institute of Public Health, Prague, Czech Republic. pavel.soucek@szu.cz.
Charles University · CZCzech Academy of Sciences · CZNational Institute of Public Health · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study addresses involvement of major 5-fluorouracil (5-FU) pathway genes in the prognosis of colorectal carcinoma patients.

methodsTesting set and two validation sets comprising paired tumor and adjacent mucosa tissue samples from 151 patients were used for transcript profiling of 15 5-FU pathway genes by quantitative real-time PCR and DNA methylation profiling by high resolution melting analysis. Intratumoral molecular profiles were correlated with clinical data of patients. Protein levels of two most relevant candidate markers were assessed by immunoblotting.

resultsDownregulation of DPYD and upregulation of PPAT, UMPS, RRM2, and SLC29A1 transcripts were found in tumors compared to adjacent mucosa in testing and validation sets of patients. Low RRM2 transcript level significantly associated with poor response to the first-line palliative 5-FU-based chemotherapy in the testing set and with poor disease-free interval of patients in the validation set irrespective of 5-FU treatment. UPP2 was strongly methylated while its transcript absent in both tumors and adjacent mucosa. DPYS methylation level was significantly higher in tumor tissues compared to adjacent mucosa samples. Low intratumoral level of UPB1 methylation was prognostic for poor disease-free interval of the patients (P = 0.0002). The rest of the studied 5-FU genes were not methylated in tumors or adjacent mucosa.

conclusionsThe observed overexpression of several 5-FU activating genes and DPYD downregulation deduce that chemotherapy naïve colorectal tumors share favorable gene expression profile for 5-FU therapy. Low RRM2 transcript and UPB1 methylation levels present separate poor prognosis factors for colorectal carcinoma patients and should be further investigated.

Indexed as

Gene Expression ProfilingTranscriptomeAgedAged, 80 and overAntimetabolites, AntineoplasticColorectal NeoplasmsCpG IslandsDNA MethylationFemaleFluorouracilGene Expression Regulation, NeoplasticHumansMaleMiddle AgedNeoplasm GradingNeoplasm StagingAntimetabolites, AntineoplasticFluorouracilRibonucleoside Diphosphate Reductaseribonucleotide reductase M25-fluorouracilColorectal carcinomaExpressionMethylationPrognosis

Identifiers

PMID27733154
PMCPMC5062913
OpenAlexW2529887986

What OpenQuestion holds

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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.