Evidence map›Paper›PMID 19936049›Full record

ArticlePLoS computational biology2009

Exon array analysis of head and neck cancers identifies a hypoxia related splice variant of LAMA3 associated with a poor prognosis.

Carla S Moller-Levet, Guy N J Betts, Adrian L Harris, Jarrod J Homer, Catharine M L West, Crispin J Miller

Open access · goldAbstract read
In one paragraph

Article in PLoS computational biology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 22% 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, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

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  7. Hypoxia-induced alternative splicing: the 11th Hallmark of Cancer.Journal of experimental & clinical cancer research : CR · 2020
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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

6 authors at 3 institutions in 1 country.

Carla S Moller-LevetApplied Computational Biology and Bioinformatics Group, Cancer Research UK Paterson Institute for Cancer Research, The University of Manchester, Christie Hospital, Manchester, United Kingdom. cmoller@picr.man.ac.uk
Guy N J Betts
Adrian L Harris
Jarrod J Homer
Catharine M L West
Crispin J Miller
University of Manchester · GBThe Christie Hospital · GBJohn Radcliffe Hospital · GB

Funding

Cancer Research UK
6 · The paper itself

Abstract

The identification of alternatively spliced transcript variants specific to particular biological processes in tumours should increase our understanding of cancer. Hypoxia is an important factor in cancer biology, and associated splice variants may present new markers to help with planning treatment. A method was developed to analyse alternative splicing in exon array data, using probeset multiplicity to identify genes with changes in expression across their loci, and a combination of the splicing index and a new metric based on the variation of reliability weighted fold changes to detect changes in the splicing patterns. The approach was validated on a cancer/normal sample dataset in which alternative splicing events had been confirmed using RT-PCR. We then analysed ten head and neck squamous cell carcinomas using exon arrays and identified differentially expressed splice variants in five samples with high versus five with low levels of hypoxia-associated genes. The analysis identified a splice variant of LAMA3 (Laminin alpha 3), LAMA3-A, known to be involved in tumour cell invasion and progression. The full-length transcript of the gene (LAMA3-B) did not appear to be hypoxia-associated. The results were confirmed using qualitative RT-PCR. In a series of 59 prospectively collected head and neck tumours, expression of LAMA3-A had prognostic significance whereas LAMA3-B did not. This work illustrates the potential for alternatively spliced transcripts to act as biomarkers of disease prognosis with improved specificity for particular tissues or conditions over assays which do not discriminate between splice variants.

Indexed as

Alternative SplicingExonsGene Expression Regulation, NeoplasticHypoxiaCarcinoma, Squamous CellCell Line, TumorCluster AnalysisHead and Neck NeoplasmsHumansLamininOligonucleotide Array Sequence AnalysisPrognosisReverse Transcriptase Polymerase Chain ReactionRNA SplicingSequence Analysis, DNALamininlaminin alpha 3

Identifiers

PMID19936049
PMCPMC2773424
OpenAlexW2080581222

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.