Evidence map›Paper›PMID 22608206›Full record

ArticleDNA repair2012

Unique mutational profile associated with a loss of TDG expression in the rectal cancer of a patient with a constitutional PMS2 deficiency.

P Vasovcak, A Krepelova, M Menigatti, A Puchmajerova, P Skapa, A Augustinakova, G Amann, A Wernstedt, J Jiricny, G Marra and 1 more

Open access · hybridAbstract readCase Reports
In one paragraph

Article in DNA repair, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.6field-weighted citation impact, top 11% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Genotype-phenotype correlations inOncology reviews · 2025
    Pooled it
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  11. Defining the Role of Nucleotide Flipping in Enzyme Specificity UsingJournal of the American Chemical Society · 2019
    Article
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  13. Oncotarget · 2017
    Article
  14. Article
  15. Article
  16. Review
  17. 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

11 authors at 6 institutions in 3 countries.

P VasovcakDepartment of Biology and Medical Genetics, Charles University 2nd Faculty of Medicine and University Hospital Motol, V Uvalu 84, 15006 Prague 5, Czech Republic. pevas78@hotmail.com
A Krepelova
M Menigatti
A Puchmajerova
P Skapa
A Augustinakova
G Amann
A Wernstedt
J Jiricny
G Marra
K Wimmer
Charles University · CZETH Zurich · CHInnsbruck Medical University · ATUniversity Hospital in Motol · CZMedical University of Vienna · ATUniversity of Zurich · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cells with DNA repair defects have increased genomic instability and are more likely to acquire secondary mutations that bring about cellular transformation. We describe the frequency and spectrum of somatic mutations involving several tumor suppressor genes in the rectal carcinoma of a 13-year-old girl harboring biallelic, germline mutations in the DNA mismatch repair gene PMS2. Apart from microsatellite instability, the tumor DNA contained a number of C:G→T:A or G:C→A:T transitions in CpG dinucleotides, which often result through spontaneous deamination of cytosine or 5-methylcytosine. Four DNA glycosylases, UNG2, SMUG1, MBD4 and TDG, are involved in the repair of these deamination events. We identified a heterozygous missense mutation in TDG, which was associated with TDG protein loss in the tumor. The CpGs mutated in this patient's tumor are generally methylated in normal colonic mucosa. Thus, it is highly likely that loss of TDG contributed to the supermutator phenotype and that most of the point mutations were caused by deamination of 5-methylcytosine to thymine, which remained uncorrected owing to the TDG deficiency. This case provides the first in vivo evidence of the key role of TDG in protecting the human genome against the deleterious effects of 5-methylcytosine deamination.

Indexed as

Germ-Line MutationAdenosine TriphosphatasesAdolescentAmino Acid SequenceDNA-Binding ProteinsDNA Repair EnzymesFemaleHeterozygoteHomozygoteHumansMismatch Repair Endonuclease PMS2Molecular Sequence DataPhenotypeRectal NeoplasmsThymine DNA GlycosylaseAdenosine TriphosphatasesDNA-Binding ProteinsDNA Repair EnzymesMismatch Repair Endonuclease PMS2PMS2 protein, humanThymine DNA Glycosylase

Identifiers

PMID22608206
PMCPMC3387372
OpenAlexW2055017864

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.