Evidence map›Paper›PMID 26998092›Full record

ArticleOncology letters2016

Analysis of the expression of SDF-1 splicing variants in human colorectal cancer and normal mucosa tissues.

Risala Hussain Allami, Claudine Graf, Ksenia Martchenko, Beatrice Voss, Marc Becker, Martin R Berger, Peter R Galle, Matthias Theobald, Thomas C Wehler, Carl C Schimanski

Open access · diamondAbstract read
In one paragraph

Article in Oncology letters, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
1.1field-weighted citation impact, top 21% 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

6 citing papers in PubMed, 11 citations in OpenAlex.

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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

10 authors at 3 institutions in 1 country.

Risala Hussain AllamiFirst Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Claudine GrafThird Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Ksenia MartchenkoDepartment of Internal Medicine, Marienhospital Darmstadt, D-64285 Darmstadt, Germany.
Beatrice VossThird Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Marc BeckerFirst Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Martin R BergerResearch Group Toxicology and Chemotherapy, German Cancer Research Center, D-69117 Heidelberg, Germany.
Peter R GalleFirst Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Matthias TheobaldThird Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Thomas C WehlerThird Department of Internal Medicine, Johannes Gutenberg University Hospital of Mainz, D-55130 Mainz, Germany.
Carl C SchimanskiDepartment of Internal Medicine, Marienhospital Darmstadt, D-64285 Darmstadt, Germany.
Johannes Gutenberg University Mainz · DEKlinikum Darmstadt · DEHeidelberg University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

C-X-C motif chemokine ligand 12 (CXCL12), also termed stromal cell-derived factor-1 (SDF-1) is a small protein 8-14 kDa in length that is expressed as six isoforms, consisting of SDF-1α, SDF-1β, SDF-1γ, SDF-1δ, SDF-1ε and SDF-1θ. All six isoforms are encoded by the single CXCL12 gene on chromosome 10. This gene regulates leukocyte trafficking and is variably expressed in a number of normal and cancer tissues. The potential role of the novel CXCL12 splice variants as components of the CXCR4 axis in cancer development is not fully understood. The present study aimed to analyze the expression profile of the various SDF-1 isoforms and SDF-1 polymorphisms, and the association with the clinicopathological features and overall survival of patients with colorectal cancer (CRC). SDF-1 polymorphism analysis was performed using restriction fragment length polymorphism (RFLP) analysis in 73 histologically confirmed human CRC tissue samples at various stages of disease. The expression pattern of the SDF-1 isoforms was analyzed by reverse transcription-polymerase chain reaction in 40 histologically confirmed human CRC tissue samples obtained at various stages of disease, as well as in matched adjacent normal mucosa samples. The presence of the CXCL12 gene polymorphism rs1801157 demonstrated an association with local progression of the primary tumor, as indicated by the T stage. The frequency of the GG genotype was slightly increased in patients with stage 3 and 4 tumors (78.0%) compared with the incidence of the GA/AA genotype (69.5%; P=0.067). The expression of SDF-1β was associated with the presence of metastases (P=0.0656) and the expression of SDF-1γ was significantly associated with tumor size (P=0.0423). The present study is the first to analyze the association between the expression profile of the chemokine CXCL12 splice variants in human CRC tissues and their clinical relevance. The present results reveal that the CXCL12 G801A polymorphism is a low-penetrance risk factor for the development of CRC, and was associated with the T stage. All six isoforms of SDF-1 were expressed in CRC tissues. The expression of SDF-1β was found to be associated with metastases and SDF-1γ appears to be a possible tumor marker for local tumor progression.

Indexed as

colorectal cancerC-X-C motif chemokine ligand 12isoformsstromal cell derived factor 1 splice variants

Identifiers

PMID26998092
PMCPMC4774538
OpenAlexW2273465438

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Registered trials

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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.