Evidence map›Paper›PMID 21342495›Full record

ArticleBMC medical genetics2011

Methylenetetrahydrofolate reductase C677T polymorphism in patients with lung cancer in a Korean population.

Lian-Hua Cui, Min-Ho Shin, Hee Nam Kim, Hye-Rim Song, Jin-Mei Piao, Sun-Seog Kweon, Jin-Su Choi, Woo-Jun Yun, Young-Chul Kim, In-Jae Oh and 1 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 14 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 5 pooled it
4.1field-weighted citation impact, top 6% 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

14 citing papers in PubMed, 5 syntheses or guidelines pooled it, 38 citations in OpenAlex.

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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 3 institutions in 2 countries.

Lian-Hua CuiDepartment of Public Health, Qingdao University Medical College, Qingdao, China.
Min-Ho Shin
Hee Nam Kim
Hye-Rim Song
Jin-Mei Piao
Sun-Seog Kweon
Jin-Su Choi
Woo-Jun Yun
Young-Chul Kim
In-Jae Oh
Kyu-Sik Kim
Chonnam National University Hospital · KRChonnam National University Hwasun Hospital · KRQingdao University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThis study was designed to investigate an association between methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and the risk of lung cancer in a Korean population.

methodsWe conducted a large-scale, case-control study involving 3938 patients with newly diagnosed lung cancer and 1700 healthy controls. Genotyping was performed with peripheral blood DNA for MTHFR C677T polymorphisms. Statistical significance was estimated by logistic regression analysis.

resultsThe MTHFR C677T frequencies of CC, CT, and TT genotypes were 34.5%, 48.5%, and 17% among lung cancer patients, and 31.8%, 50.7%, and 17.5% in the controls, respectively. The MTHFR 677CT and TT genotype showed a weak protection against lung cancer compared with the homozygous CC genotype, although the results did not reach statistical significance. The age- and gender-adjusted odds ratio (OR) of overall lung cancer was 0.90 (95% confidence interval (CI), 0.77-1.04) for MTHFR 677 CT and 0.88 (95% CI, 0.71-1.07) for MTHFR 677TT. However, after stratification analysis by histological type, the MTHFR 677CT genotype showed a significantly decreased risk for squamous cell carcinoma (age- and gender-adjusted OR, 0.78; 95% CI, 0.64-0.96). The combination of 677 TT homozygous with 677 CT heterozygous also appeared to have a protection effect on the risk of squamous cell carcinoma. We observed no significant interaction between the MTHFR C677T polymorphism and age and gender or smoking habit.

conclusionsThis is the first reported study focusing on the association between MTHFR C677T polymorphisms and the risk of lung cancer in a Korean population. The T allele was found to provide a weak protective association with lung squamous cell carcinoma.

Indexed as

Polymorphism, Single NucleotideAdenocarcinomaAgedAllelesBase SequenceCarcinoma, Large CellCarcinoma, Squamous CellCase-Control StudiesConfidence IntervalsDNA, NeoplasmDNA PrimersFemaleGene FrequencyGenetic Predisposition to DiseaseHumansLung NeoplasmsDNA, NeoplasmDNA PrimersMethylenetetrahydrofolate Reductase (NADPH2)

Identifiers

PMID21342495
PMCPMC3048494
OpenAlexW2078851185

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.