Evidence map›Paper›PMID 21232124›Full record

ArticleBMC medical genetics2011

The mitochondrial DNA 4,977-bp deletion and its implication in copy number alteration in colorectal cancer.

Tao Chen, Jing He, Lijun Shen, Hezhi Fang, Hezhongrong Nie, Tao Jin, Xiaosong Wei, Yijuan Xin, Yulin Jiang, Hongzhi Li and 3 more

Open access · goldAbstract read
In one paragraph

Article in BMC medical genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 1 pooled it
4.4field-weighted citation impact, top 5% 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

66 citing papers in PubMed, 1 synthesis or guideline pooled it, 121 citations in OpenAlex.

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6 more citing papers are in PubMed but not listed here.

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

13 authors at 2 institutions in 2 countries.

Tao ChenZhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine of Wenzhou Medical College, Zhejiang 325035, PRChina.
Jing He
Lijun Shen
Hezhi Fang
Hezhongrong Nie
Tao Jin
Xiaosong Wei
Yijuan Xin
Yulin Jiang
Hongzhi Li
Guorong Chen
Jianxin Lu
Yidong Bai
Wenzhou Medical University · CNFirst Affiliated Hospital of Wenzhou Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundqualitative and quantitative changes in human mitochondrial DNA (mtDNA) have been implicated in various cancer types. A 4,977 bp deletion in the major arch of the mitochondrial genome is one of the most common mutations associated with a variety of human diseases and aging.

methodswe conducted a comprehensive study on clinical features and mtDNA of 104 colorectal cancer patients in the Wenzhou area of China. In particular, using a quantitative real time PCR method, we analyzed the 4,977 bp deletion and mtDNA content in tumor tissues and paired non-tumor areas from these patients.

resultswe found that the 4,977 bp deletion was more likely to be present in patients of younger age (≤65 years, p = 0.027). In patients with the 4,977 bp deletion, the deletion level decreased as the cancer stage advanced (p = 0.031). Moreover, mtDNA copy number in tumor tissues of patients with this deletion increased, both compared with that in adjacent non-tumor tissues and with in tumors of patients without the deletion. Such mtDNA content increase correlated with the levels of the 4,977 bp deletion and with cancer stage (p < 0.001).

conclusionsour study indicates that the mtDNA 4,977 bp deletion may play a role in the early stage of colorectal cancer, and it is also implicated in alteration of mtDNA content in cancer cells.

Indexed as

AdultAgedAged, 80 and overBase SequenceChinaColorectal NeoplasmsDNA Copy Number VariationsDNA, MitochondrialDNA, NeoplasmFemaleHumansIncidenceMaleMiddle AgedMolecular Sequence DataSequence DeletionDNA, MitochondrialDNA, Neoplasm

Identifiers

PMID21232124
PMCPMC3025938
OpenAlexW1964135779

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LicenceCC BY
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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.