Evidence map›Paper›PMID 30739527›Full record

ArticleEpigenetics2019

Reduced aquaporin-1 transcript expression in colorectal carcinoma is associated with promoter hypermethylation.

Eric Smith, Yoko Tomita, Helen M Palethorpe, Stuart Howell, Maryam Nakhjavani, Amanda R Townsend, Timothy J Price, Joanne P Young, Jennifer E Hardingham

Open access · bronzeAbstract read
In one paragraph

Article in Epigenetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

10 citing papers in PubMed, 11 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Cancer therapy-related salivary dysfunction.The Journal of clinical investigation · 2024
    Review
  5. Review
  6. Article
  7. Based on Histogram Analysis: ADCScientific reports · 2020
    Article
  8. Review
  9. Article
  10. 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

9 authors at 2 institutions in 1 country.

Eric Smitha Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.ORCID 0000-0003-2958-3492
Yoko Tomitaa Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.ORCID 0000-0001-7934-2203
Helen M Palethorpea Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.ORCID 0000-0003-3803-5113
Stuart Howellc School of Public Health , University of Adelaide , Adelaide , SA , Australia.
Maryam Nakhjavania Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.
Amanda R Townsenda Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.
Timothy J Pricea Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.ORCID 0000-0002-3922-2693
Joanne P Younga Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.ORCID 0000-0002-1514-1522
Jennifer E Hardinghama Solid Tumour Group, Basil Hetzel Institute , The Queen Elizabeth Hospital , Woodville South , SA , Australia.ORCID 0000-0001-8277-1199
Basil Hetzel Institute · AUThe University of Adelaide · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aquaporin-1 (AQP1) is a homo-tetrameric transmembrane protein that facilitates rapid movement of water and ions across cell membranes. The clinical significance of AQP1 expression in colorectal carcinoma (CRC) is controversial. The aim of this study was to investigate the prognostic significance of AQP1 transcript expression and the association between expression and promoter methylation in normal colonic mucosa, CRC tissues and cell lines. Analysis of publicly available datasets from The Cancer Genome Atlas revealed that AQP1 expression was significantly decreased in CRC compared to normal mucosa (12.7 versus 33.3 respectively, P < 0.0001). However, expression increased with advanced disease, being significantly higher in stage IV (17.6) compared to either stage I (11.8, P = 0.0039) or II (10.9; P = 0.0023), and in patients with lymph node metastasis compared to those without (13.9 versus 11.3 respectively, P = 0.0023). Elevated expression was associated with decreased overall survival with univariate (Cox Proportional Hazard Ratio 1.60, 95% confidence interval 1.05-2.42, P = 0.028), but not multivariable analysis when considering the confounders stage and age. Analysis of HumanMethylation450 data demonstrated that AQP1 promoter methylation was significantly increased in CRC compared to normal mucosa. Analysis of CRC tissues and cell lines strongly suggested that methylation was associated with decreased expression. BRAF

Indexed as

DNA MethylationDown-RegulationAdultAgedAged, 80 and overAquaporin 1Colorectal NeoplasmsFemaleGene Expression Regulation, NeoplasticHumansLymphatic MetastasisMaleMiddle AgedNeoplasm StagingPrognosisPromoter Regions, GeneticAQP1 protein, humanAquaporin 1aquaporin-1 (AQP1)Colorectal cancerDNA methylationexpressionprognosis

Identifiers

PMID30739527
PMCPMC6557614
OpenAlexW2911337000

What OpenQuestion holds

Textmetadata
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.