Evidence map›Paper›PMID 27022282›Full record

ArticleOncoTargets and therapy2016

The relationship between apolipoprotein E gene ε2/ε3/ε4 polymorphism and breast cancer risk: a systematic review and meta-analysis.

Yun-Long Liu, Hao-Min Zhang, Hong-Ming Pan, Yu-Hang Bao, Jing Xue, Tian-Chang Wang, Xiao-Cheng Dong, Xiao-Ling Li, Hong-Guang Bao

Open access · goldAbstract read
In one paragraph

Article in OncoTargets and therapy, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.5field-weighted citation impact, top 33% 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

10 citing papers in PubMed, 13 citations in OpenAlex.

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  4. Association of theJournal of personalized medicine · 2023
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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

9 authors at 1 institution in 1 country.

Yun-Long LiuDepartment of Chest Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Hao-Min ZhangDepartment of Chest Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Hong-Ming PanBasic Medical Science College, Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Yu-Hang BaoBasic Medical Science College, Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Jing XueBasic Medical Science College, Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Tian-Chang WangDepartment of Chest Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Xiao-Cheng DongDepartment of Chest Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Xiao-Ling LiDepartment of Anatomy, Basic Medical Science College, Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Hong-Guang BaoDepartment of Chest Surgery, The Second Affiliated Hospital of Qiqihar Medical University, Qiqihar, Heilongjiang, People's Republic of China.
Qiqihar Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWe conducted a systematic review and meta-analysis aiming to assess the relationship between apolipoprotein E (APOE) gene ε2/ε3/ε4 polymorphism and breast cancer risk.

methodsYun-Long Liu and Hao-Min Zhang independently completed literature retrieval and data collection, and statistical analyses were performed by Stata. Individual odds ratio (OR) and 95% confidence interval (CI) were pooled in a random-effects model using the DerSimonian-Laird method. Heterogeneity was evaluated by I (2) statistic at a significance level of 50%. Publication bias was assessed by Egger's test.

resultsEleven articles including 2,074 breast cancer patients and 2,372 controls were summarized. Using the most common allele ε3 as a reference, the ε2 (OR =0.87, 95% CI =0.72-1.05, P=0.154, I (2)=0.0%) and ε4 (OR =1.07, 95% CI =0.80-1.42, P=0.654, I (2)=71.8%) alleles were not found to be significantly associated with breast cancer risk in the overall analyses. Subgroup analyses revealed that the comparison of allele ε4 with ε3 was significant in Asians (OR =1.58, 95% CI =1.17-6.32, P=0.003, I (2)=12.1%) and in studies that used the restriction fragment length polymorphism (RFLP) genotyping method (OR =1.27; 95% CI =1.01-1.61, P=0.045, I (2)=34.3%), and was marginally significant in hospital-based studies (OR =1.33; 95% CI =0.98-1.79, P=0.065, I (2)=30.2%), without heterogeneity. Moreover, the presence of the ε2 allele was significantly associated with breast cancer in small studies (total sample size <500) (OR =0.73, 95% CI =0.54-1.00, P=0.052, I (2)=0.0%) without heterogeneity. The Egger's test indicated low probabilities of publication bias.

conclusionWe observed a significant association between APOE gene ε4 allele and breast cancer risk in Asian populations. Moreover, the findings of our subgroup analyses suggest that source of controls, genotyping platform, and sample size might be the potential causes of heterogeneity.

Indexed as

apolipoprotein Ebreast cancermeta-analysispolymorphism

Identifiers

PMID27022282
PMCPMC4789883
OpenAlexW2296077569

What OpenQuestion holds

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LicenceCC BY-NC
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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.