Evidence map›Paper›PMID 24005533›Full record

ArticleMolecular and cellular biochemistry2013

Aberrant promoter hypermethylation of p21 (WAF1/CIP1) gene and its impact on expression and role of polymorphism in the risk of breast cancer.

Marjan Askari, Ranbir Chander Sobti, Mohsen Nikbakht, Suresh C Sharma

Abstract read
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In one paragraph

Article in Molecular and cellular biochemistry, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 29% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Exploring druggable targets and inflammation-mediated pathways in cancer: a Mendelian randomization analysis integrating transcriptomic and proteomic data.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2025
    Article
  5. Review
  6. CDKN1A/p21 in Breast Cancer: Part of the Problem, or Part of the Solution?International journal of molecular sciences · 2023
    Review
  7. Review
  8. Article
  9. Multiple functions of p21 in cancer radiotherapy.Journal of cancer research and clinical oncology · 2021
    Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. TES was epigenetically silenced and suppressed the epithelial-mesenchymal transition in breast cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Article
  17. Epigenetic changes in p21 expression in renal cells after exposure to bromate.Toxicological sciences : an official journal of the Society of Toxicology · 2014
    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 3 institutions in 2 countries.

Marjan AskariDepartment of Biotechnology, Panjab University, Chandigarh, India.
Ranbir Chander Sobti
Mohsen Nikbakht
Suresh C Sharma
Panjab University · INPost Graduate Institute of Medical Education and Research · INTehran University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

p21 (Waf-1) is a cyclin-dependent kinase inhibitor that plays essential roles in cell growth arrest, terminal differentiation, and apoptosis. Statistically significant difference in the level of methylation of p21/CIP1 (p < 0. 05) between the patients with breast cancer and the healthy controls was observed. Risk of breast cancer was increased in patients with hypermethylated p21/CIP1 promoter by 2.31-fold (OR = 2.31, 95 % CI 1.95-2.74). The downregulation of p21/CIP1 mRNA expression was statistically significant in patients with methylated promoter (p < 0.00) in comparison to patients with unmethylated genes. Downregulation of mRNA expression of p21/CIP1 was up to 79% due to promoter hypermethylation. We examined several p21/CIP1 genotypes in the patients with breast cancer and found that there is no significant association of these p21/CIP1 genotypes with the risk of developing breast cancer. However, a significant 2.21-fold increase in the chance of developing breast cancer was observed in the candidates carrying at least one allele Arg mutant in p21/CIP1 genotype (i.e., Ser/Arg + Arg/Arg) with age >50 (OR = 2.21; 95 % CI 1.03-4.79).

Indexed as

Gene Expression Regulation, NeoplasticPolymorphism, GeneticPromoter Regions, GeneticAgedBase SequenceBreast NeoplasmsCase-Control StudiesCyclin-Dependent Kinase Inhibitor p21DNA MethylationFemaleGene FrequencyGenetic Predisposition to DiseaseHumansIndiaMenopauseMiddle AgedCDKN1A protein, humanCyclin-Dependent Kinase Inhibitor p21

Identifiers

PMID24005533
OpenAlexW2028743684

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.