Evidence map›Paper›PMID 25596081›Full record

SynthesisTumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine2015

Prognostic value of MGMT methylation in colorectal cancer: a meta-analysis and literature review.

Yanliang Li, Zhongchuan Lyu, Lixin Zhao, Hong Cheng, Dongyuan Zhu, Yongsheng Gao, Xiuwan Shang, Huaijie Shi

Abstract readMeta-AnalysisReview
PubMed Publisher
In one paragraph

Synthesis in Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.0field-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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Hypermethylation ofAdvanced biomedical research · 2023
    Article
  7. The OReports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2022
    Article
  8. Diagnostic and prognostic values of forkhead box D4 gene in colonic adenocarcinoma.International journal of clinical and experimental pathology · 2020
    Article
  9. Article
  10. Epidemiology and biology of physical activity and cancer recurrence.Journal of molecular medicine (Berlin, Germany) · 2017
    Review
  11. Article
  12. DNA methylation assay for colorectal carcinoma.Cancer biology & medicine · 2017
    Article
  13. Review
  14. Article
  15. 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

8 authors at 4 institutions in 1 country.

Yanliang LiDepartment of Gastrointestinal Surgery, Shandong Provincial Cancer Hospital, Jinan, 250117, Shandong, China.
Zhongchuan Lyu
Lixin Zhao
Hong Cheng
Dongyuan Zhu
Yongsheng Gao
Xiuwan Shang
Huaijie Shi
Liaocheng People's Hospital · CNShandong University · CNWeihai Maternal and Child Health Hospital · CNYuhuangding Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The development of colorectal cancer (CRC) spans about 5-10 years, making early detection and prevention beneficial to the survival of CRC patients. To address inconsistencies in evidence regarding O(6)-methylguanine-DNA-methyltransferase (MGMT) methylation as a potential prognostic factor in CRC, we conducted a meta-analysis to evaluate MGMT methylation in CRC patients. Fourteen studies were included in the meta-analysis after screening 120 articles. The following items were collected from each study: author, published year, country, patient gender, MGMT methylation status, and patients' disease progression. Pooled hazard ratios and odd ratios with 95% confidence intervals (CIs) were calculated using fixed or random effect models depending on the heterogeneity between studies. The overall survival of CRC patients was found not to be significantly associated with MGMT methylation. Further subgroup analysis showed that the frequency of MGMT methylation was significantly higher in CRC than in normal tissues (p < 0.00001). MGMT promoter in CRC patients was more frequently methylated than in adenoma patients. In addition, MGMT methylation was significantly increased in adenoma than in normal tissues (p < 0.0001). In conclusion, MGMT methylation is central to the development of cancer that involves a stepwise carcinogenesis of normal adenoma carcinoma cascade. However, MGMT methylation is not associated with the prognosis of CRC.

Indexed as

DNA MethylationAdenomaBiomarkers, TumorCarcinomaColorectal NeoplasmsDNA Modification MethylasesDNA Repair EnzymesHumansPrognosisPromoter Regions, GeneticTumor Suppressor ProteinsBiomarkers, TumorDNA Modification MethylasesDNA Repair EnzymesMGMT protein, humanTumor Suppressor Proteins

Identifiers

PMID25596081
OpenAlexW2064738900

What OpenQuestion holds

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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.