Evidence map›Paper›PMID 22052259›Full record

ArticleInternational journal of cancer2012

MTHFR polymorphisms, folate intake and carcinogen DNA adducts in the lung.

Mi-Sun Lee, Kofi Asomaning, Li Su, John C Wain, Eugene J Mark, David C Christiani

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in International journal of cancer, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 21% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 23 citations in OpenAlex.

  1. Association between MTHFR 677C>T polymorphism and risk of gliomas: evidence from a meta-analysis.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2013
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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

6 authors at 2 institutions in 1 country.

Mi-Sun LeeDepartment of Environmental Health, Environmental and Occupational Medicine and Epidemiology Program, Harvard School of Public Health, and Department of Surgery, Massachusetts General Hospital, Boston, MA 02115, USA.
Kofi Asomaning
Li Su
John C Wain
Eugene J Mark
David C Christiani
Harvard University · USMassachusetts General Hospital · US

Funding

Translational studies of Hsp90 inhibitors in NSCLCP50CA090578 · NCI · DANA-FARBER CANCER INST · PI JOHNSON, BRUCE D · 2008 to 2012
$11.4M
Molecular and Genetic Analysis of Lung Cancer SurvivalR01CA092824 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI CHRISTIANI, DAVID C · 2002 to 2013
$5.9M
SPORE in Lung CancerP20CA090578 · NCI · DANA-FARBER CANCER INSTITUTE · PI JOHNSON, BRUCE E. · 2003 to 2007
$5.1M
GENETIC SUSCEPTIBILITY TO LUNG CANCERR01CA074386 · NCI · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI CHRISTIANI, DAVID C · 1997 to 2008
$4.8M
NCI NIH HHS CA074386NCI NIH HHS CA090578NCI NIH HHS CA092824NCI NIH HHS P20 CA090578NCI NIH HHS P50 CA090578NCI NIH HHS R01 CA074386NCI NIH HHS R01 CA092824
6 · The paper itself

Abstract

The methylenetetrahydrofolate reductase (MTHFR) genes and folate in one-carbon metabolism are essential for DNA methylation and synthesis. However, their role in carcinogen DNA damage in target lung tissue, a dosimeter for cancer risk, is not known. Our study aimed to investigate the association between genetic and nutritional one-carbon metabolism factors and DNA adducts in target lung. Data on 135 lung cancer cases from the Massachusetts General Hospital were studied. Genotyping was completed for MTHFR C677T (rs1801133) and A1298C (rs1801131). Information on dietary intake for one-carbon related micronutrients, folate and other B vitamin was derived from a validated food frequency questionnaire. DNA adducts in lung were measured by (32) P-postlabeling. After adjusting for potential confounders, DNA adduct levels in lung significantly increased by 69.2% [95% confidence interval (CI), 5.5% to 171.5%] for the MTHFR 1298AC+CC genotype. The high risk group, combining the A1298C (AC+CC) plus C677T (CT+TT) genotypes, had significantly enhanced levels of lung adducts by 210.7% (95% CI, 21.4% to 695.2%) in contrast to the A1298C (AA) plus C677T (CC) genotypes. Elevation of DNA adduct was pronounced-111.3% (95% CI, -3.0 to 360.5%) among 1298AC+CC patients, who consumed the lowest level of folate intake as compared to 1298AA individuals with highest tertile of intake. These results indicate that DNA adducts levels are influenced by MTHFR polymorphisms and low folate consumption, suggesting an important role of genetic and nutritional factors in protecting DNA damage from lung carcinogen in at-risk populations.

Indexed as

AdenocarcinomaAgedCarcinoma, Squamous CellCase-Control StudiesDNA AdductsFemaleFolic AcidGenetic Predisposition to DiseaseGenotypeHumansLungLung NeoplasmsMaleMethylenetetrahydrofolate Reductase (NADPH2)Neoplasm StagingPolymorphism, GeneticDNA AdductsFolic AcidMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, human

Identifiers

PMID22052259
PMCPMC3293105
OpenAlexW2033112599

What OpenQuestion holds

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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.