Evidence map›Paper›PMID 25603912›Full record

ArticleCancer2015

Low expression of chloride channel accessory 1 predicts a poor prognosis in colorectal cancer.

Bo Yang, Lin Cao, Jiaen Liu, Yanjie Xu, Gillian Milne, Wanhei Chan, Steven D Heys, Colin D McCaig, Jin Pu

Abstract read
In one paragraph

Article in Cancer, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
–field-weighted citation impact
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

35 citing papers in PubMed.

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  11. Ion Transport and Radioresistance.Reviews of physiology, biochemistry and pharmacology · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Bo YangDepartment of General Surgery, 309th Hospital of the People's Liberation Army, Beijing, China.
Lin Cao
Jiaen Liu
Yanjie Xu
Gillian Milne
Wanhei Chan
Steven D Heys
Colin D McCaig
Jin Pu

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundChloride channel accessory 1 (CLCA1) is a CLCA protein that plays a functional role in regulating the differentiation and proliferation of colorectal cancer (CRC) cells. Here we investigated the relationship between the level of CLCA1 and the prognosis of CRC.

methodsFirst, the level of CLCA1 was detected quantitatively in normal and cancerous colonic epithelial tissues with immunohistochemistry. Next, the correlations between CLCA1 expression, pathological tumor features, and the overall survival rate of patients was analyzed. Finally, 3 publicly available data sets from the Gene Expression Omnibus were examined: normal CRC versus early CRC (GSE4107), primary CRC versus metastatic lesions (GSE28702), and low chromosomal instability versus high chromosomal instability (GSE30540).

resultsThe expression of CLCA1 was decreased markedly in tumor specimens. CLCA1 expression was correlated significantly with the histological grade (P < .01) and lymph node metastasis (P < .01). A significantly poorer overall survival rate was found in patients with low levels of CLCA1 expression versus those with high expression levels (P < .05). The results confirmed that the low expression of CLCA1 in CRC was highly associated with tumorigenesis, metastasis, and high chromosomal instability. In addition, the loss of CLCA1 disrupted the differentiation of human colon adenocarcinoma cells (Caco-2) in vitro.

conclusionsThese findings suggest that CLCA1 levels may be a potential predictor of prognosis in primary human CRC. Low expression of CLCA1 predicts disease recurrence and lower survival, and this has implications for the selection of patients most likely to need and benefit from adjuvant chemotherapy.

Indexed as

AdultAgedAged, 80 and overBiomarkers, TumorBlotting, WesternCadherinsChloride ChannelsColorectal NeoplasmsDown-RegulationFemaleGene Expression Regulation, NeoplasticHumansImmunohistochemistryKaplan-Meier EstimateKi-67 AntigenMaleBiomarkers, TumorCadherinsChloride ChannelsCLCA1 protein, humanKi-67 AntigenPTEN PhosphohydrolasePTEN protein, humanTumor Suppressor Protein p53cell differentiationchloride channel accessory 1 (CLCA1) expressioncolorectal carcinomaprognosis

Identifiers

PMID25603912
PMCPMC4654332

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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.