Evidence map›Paper›PMID 21599969›Full record

ArticleBMC medical genomics2011

Distinct DNA methylation epigenotypes in bladder cancer from different Chinese sub-populations and its implication in cancer detection using voided urine.

Pi-Che Chen, Ming-Hsuan Tsai, Sidney K H Yip, Yeong-Chin Jou, Chi-Fai Ng, Yanning Chen, Xiaoling Wang, Wei Huang, Chun-Liang Tung, Gary C W Chen and 8 more

Open access · goldAbstract read
In one paragraph

Article in BMC medical genomics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 3 pooled it
1.9field-weighted citation impact, top 14% 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

28 citing papers in PubMed, 3 syntheses or guidelines pooled it, 44 citations in OpenAlex.

  1. Pooled it
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  9. Promoter methylation analysis ofOncoTargets and therapy · 2018
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  19. The methylation of a panel of genes differentiates low-grade from high-grade gliomas.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015
    Article
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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

18 authors at 6 institutions in 2 countries.

Pi-Che ChenDepartment of Life Science, National Chung Cheng University, Min-Hsiung, Chia-Yi, Taiwan.
Ming-Hsuan Tsai
Sidney K H Yip
Yeong-Chin Jou
Chi-Fai Ng
Yanning Chen
Xiaoling Wang
Wei Huang
Chun-Liang Tung
Gary C W Chen
Martin M S Huang
Joanna H M Tong
Eing-Ju Song
De-Ching Chang
Cheng-Da Hsu
Ka-Fai To
Cheng-Huang Shen
Michael W Y Chan
Chia-Yi Christian Hospital · TWNational Chung Cheng University · TWChinese University of Hong Kong · CNHebei Medical University · CNChang Jung Christian University · TWXinqiao Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBladder cancer is the sixth most common cancer in the world and the incidence is particularly high in southwestern Taiwan. Previous studies have identified several tumor-related genes that are hypermethylated in bladder cancer; however the DNA methylation profile of bladder cancer in Taiwan is not fully understood.

methodsIn this study, we compared the DNA methylation profile of multiple tumor suppressor genes (APC, DAPK, E-cadherin, hMLH1, IRF8, p14, p15, RASSF1A, SFRP1 and SOCS-1) in bladder cancer patients from different Chinese sub-populations including Taiwan (104 cases), Hong Kong (82 cases) and China (24 cases) by MSP. Two normal human urothelium were also included as control. To investigate the diagnostic potential of using DNA methylation in non-invasive detection of bladder cancer, degree of methylation of DAPK, IRF8, p14, RASSF1A and SFRP1 was also accessed by quantitative MSP in urine samples from thirty bladder cancer patients and nineteen non-cancer controls.

resultsThere were distinct DNA methylation epigenotypes among the different sub-populations. Further, samples from Taiwan and China demonstrated a bimodal distribution suggesting that CpG island methylator phentotype (CIMP) is presented in bladder cancer. Moreover, the number of methylated genes in samples from Taiwan and Hong Kong were significantly correlated with histological grade (P < 0.01) and pathological stage (P < 0.01). Regarding the samples from Taiwan, methylation of SFRP1, IRF8, APC and RASSF1A were significantly associated with increased tumor grade, stage. Methylation of RASSF1A was associated with tumor recurrence. Patients with methylation of APC or RASSF1A were also significantly associated with shorter recurrence-free survival. For methylation detection in voided urine samples of cancer patients, the sensitivity and specificity of using any of the methylated genes (IRF8, p14 or sFRP1) by qMSP was 86.7% and 94.7%.

conclusionsOur results indicate that there are distinct methylation epigenotypes among different Chinese sub-populations. These profiles demonstrate gradual increases with cancer progression. Finally, detection of gene methylation in voided urine with these distinct DNA methylation markers is more sensitive than urine cytology.

Indexed as

Early Detection of CancerAdultAgedAged, 80 and overAsian PeopleBiomarkers, TumorCase-Control StudiesDisease ProgressionDNA MethylationFemaleGenes, NeoplasmGenes, Tumor SuppressorGenotypeHumansMaleMiddle AgedBiomarkers, Tumor

Identifiers

PMID21599969
PMCPMC3127971
OpenAlexW2155372650

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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.