Evidence map›Paper›PMID 20305761›Full record

ArticleHepatology international2010

Clinicopathological significance of RASSF1A reduced expression and hypermethylation in hepatocellular carcinoma.

Lang Hu, Gang Chen, Hongping Yu, Xiaoqiang Qiu

Open access · hybridAbstract read
In one paragraph

Article in Hepatology international, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Is Cell-Free DNA Testing in Hepatocellular Carcinoma Ready for Prime Time?International journal of molecular sciences · 2023
    Review
  6. Article
  7. Article
  8. Review
  9. Diagnostic performance ofClinical and experimental hepatology · 2022
    Article
  10. Epigenetically inactivated RASSF1A as a tumor biomarker.Bosnian journal of basic medical sciences · 2021
    Review
  11. Article
  12. Impact of circulating tumor DNA in hepatocellular and pancreatic carcinomas.Journal of cancer research and clinical oncology · 2020
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

4 authors at 1 institution in 1 country.

Lang HuDepartment of Epidemiology, Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region,People’s Republic of China. hulang2000060@sina.com
Gang Chen
Hongping Yu
Xiaoqiang Qiu
Guangxi Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeProtein downregulation and hypermethylation of Ras association domain family 1A (RASSF1A) has been recognized as an important early event in different classes of carcinogenesis, but clinicopathological significance of RASSF1A protein expression and methylation in hepatocellular carcinoma (HCC) remains largely unknown. The aim of the study was to investigate the expression of RASSF1A protein and methylation in HCC and their clinical significance.

methodsImmunohistochemistry was employed to detect the expression of RASSF1A proteins in liver tissue microarrays. Aberrant promoter hypermethylation of RASSF1A was investigated in DNA from HCC, matching noncancerous tissues and serum of 35 HCC patients by methylation-specific PCR.

resultsRASSF1A protein expression in HCC was significantly lower than that in noncancerous (p = 0.015) and paracancerous tissues (p = 0.017). In addition, reduced RASSF1A protein expression is related to TNM stage, metastasis, alpha-fetoprotein, portal vein embolus, capsular infiltration, and multiple tumor nodes. Furthermore, RASSF1A promoter methylation in HCC was significantly higher than that in noncancerous liver tissues (p < 0.05). Meanwhile, RASSF1A promoter hypermethylation was detected in 14 in the serum DNA from HCC patients, whereas no hypermethylation was detected in the normal controls. Hypermethylation of RASSF1A in HCC serum and tissues was negatively correlated with the expression of RASSF1A protein expression (p < 0.05).

conclusionsThe loss or abnormal protein downregulation and the promoter hypermethylation of RASSF1A could play important roles in the tumorigenesis development and metastases of HCC. The detection of the promoter hypermethylation of RASSF1A in serum DNA could be a valuable biomarker for early-stage diagnosis in populations at high risk of HCC.

Indexed as

DNAHepatocellular carcinomaImmunohistochemistryPromoter hypermethylationRASSF1ATissue microarrays (TMAs)

Identifiers

PMID20305761
PMCPMC2836437
OpenAlexW2042644795

What OpenQuestion holds

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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.