Evidence map›Paper›PMID 27382273›Full record

SynthesisInternational journal of chronic obstructive pulmonary disease2016

Association between TNF-α -308 G/A polymorphism and COPD susceptibility: a meta-analysis update.

Lu Zhang, Hao Gu, Yihang Gu, Xiaoning Zeng

Open access · goldAbstract readMeta-AnalysisReview
In one paragraph

Synthesis in International journal of chronic obstructive pulmonary disease, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.5field-weighted citation impact, top 16% 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

11 citing papers in PubMed, 27 citations in OpenAlex.

  1. The application of clinical genetics · 2026
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  11. Tuberculosis and lung damage: from epidemiology to pathophysiology.European respiratory review : an official journal of the European Respiratory Society · 2018
    Review
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.

Lu ZhangClinical Research Centre.
Hao GuDepartment of Respiratory & Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China.
Yihang GuDepartment of Respiratory & Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China.
Xiaoning ZengDepartment of Respiratory & Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, People's Republic of China.
Nanjing Medical University · CNJiangsu Province Hospital · CNUniversity Clinical Centre · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

objectiveThe association between TNF-α -308 G/A polymorphism and COPD remains controversial due to insufficiently strict study designs and small group sizes among different studies. In the present study, a meta-analysis update which followed a stricter procedure was performed to obtain a clearer understanding of this association.

methodsA comprehensive database search was conducted to identify the case-control studies published up to July 2015 which reported an association between the TNF-α -308 G/A polymorphism and COPD risk. Data were extracted to calculate pooled odds ratios with 95% confidence intervals under the most appropriate genetic and allelic models. Sensitivity was analyzed, and heterogeneity as well as publication bias was assessed.

resultsThirty-eight eligible studies, comprising 3,951 COPD cases and 5,110 controls, were included in this study, among which 22 studies comprising 2,067 COPD cases and 2,167 controls were performed in Asians, and 16 studies comprising 1,884 COPD cases and 2,943 controls were in non-Asians. The overall result showed that TNF-α -308 G/A polymorphisms were significantly associated with increased COPD risk in both the codominant genetic and allelic models. Individuals with the GA or AA genotype were more susceptible to COPD development than those with the GG genotype. In addition, individuals with the AA genotype were more susceptible to developing COPD than those with the GA genotype. The subgroup analysis stratified by ethnicity supported the results in Asians but not in non-Asians. However, no association was found between TNF-α -308 G/A polymorphisms and COPD susceptibility either in Asians or in non-Asians in the meta-analysis conducted with restriction to former/current smokers.

conclusionThe present meta-analysis suggested that the TNF-α -308 G/A polymorphism was associated with an increased risk of COPD among Asians but not in non-Asians. Furthermore, individuals with the AA genotype of TNF-α -308 were more susceptible to developing COPD.

Indexed as

Polymorphism, GeneticAsian PeopleCase-Control StudiesGene FrequencyGenetic Association StudiesGenetic Predisposition to DiseaseHeterozygoteHomozygoteHumansModels, GeneticOdds RatioPhenotypePulmonary Disease, Chronic ObstructiveRisk AssessmentRisk FactorsTumor Necrosis Factor-alphaTumor Necrosis Factor-alphaCOPDcytokineethnicitygenotypesmokers

Identifiers

PMID27382273
PMCPMC4922767
OpenAlexW2460142811

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.