Evidence map›Paper›PMID 26825526›Full record

ArticleDiabetologia2016

Tobacco smoking is associated with DNA methylation of diabetes susceptibility genes.

Symen Ligthart, Rebecca V Steenaard, Marjolein J Peters, Joyce B J van Meurs, Eric J G Sijbrands, André G Uitterlinden, Marc J Bonder, BIOS consortium, Albert Hofman, Oscar H Franco and 1 more

Open access · hybridAbstract read
In one paragraph

Article in Diabetologia, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
4.0field-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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

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  8. Relationship BetweenPharmacogenomics and personalized medicine · 2021
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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 1 country.

Symen LigthartDepartment of Epidemiology, Erasmus University Medical Center, P. O. Box 2040, 3000 CA, Rotterdam, the Netherlands.
Rebecca V SteenaardDepartment of Epidemiology, Erasmus University Medical Center, P. O. Box 2040, 3000 CA, Rotterdam, the Netherlands.
Marjolein J PetersDepartment of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands.
Joyce B J van MeursDepartment of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands.
Eric J G SijbrandsDepartment of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands.
André G UitterlindenDepartment of Epidemiology, Erasmus University Medical Center, P. O. Box 2040, 3000 CA, Rotterdam, the Netherlands.
Marc J BonderDepartment of Genetics, University of Groningen, University Medical Centre Groningen, Groningen, the Netherlands.
BIOS consortium
Albert HofmanDepartment of Epidemiology, Erasmus University Medical Center, P. O. Box 2040, 3000 CA, Rotterdam, the Netherlands.
Oscar H FrancoDepartment of Epidemiology, Erasmus University Medical Center, P. O. Box 2040, 3000 CA, Rotterdam, the Netherlands.
Abbas DehghanDepartment of Epidemiology, Erasmus University Medical Center, P. O. Box 2040, 3000 CA, Rotterdam, the Netherlands. a.dehghan@erasmusmc.nl.
Erasmus MC · NLNetherlands Consortium for Healthy Ageing · NLUniversity Medical Center Groningen · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aims/hypothesisTobacco smoking, a risk factor for diabetes, is an established modifier of DNA methylation. We hypothesised that tobacco smoking modifies DNA methylation of genes previously identified for diabetes.

methodsWe annotated CpG sites available on the Illumina Human Methylation 450K array to diabetes genes previously identified by genome-wide association studies (GWAS), and investigated them for an association with smoking by comparing current to never smokers. The discovery study consisted of 630 individuals (Bonferroni-corrected p = 1.4 × 10(-5)), and we sought replication in an independent sample of 674 individuals. The replicated sites were tested for association with nearby genetic variants and gene expression and fasting glucose and insulin levels.

resultsWe annotated 3,620 CpG sites to the genes identified in the GWAS on type 2 diabetes. Comparing current smokers to never smokers, we found 12 differentially methylated CpG sites, of which five replicated: cg23161492 within ANPEP (p = 1.3 × 10(-12)); cg26963277 (p = 1.2 × 10(-9)), cg01744331 (p = 8.0 × 10(-6)) and cg16556677 (p = 1.2 × 10(-5)) within KCNQ1 and cg03450842 (p = 3.1 × 10(-8)) within ZMIZ1. The effect of smoking on DNA methylation at the replicated CpG sites attenuated after smoking cessation. Increased DNA methylation at cg23161492 was associated with decreased gene expression levels of ANPEP (p = 8.9 × 10(-5)). rs231356-T, which was associated with hypomethylation of cg26963277 (KCNQ1), was associated with a higher odds of diabetes (OR 1.06, p = 1.3 × 10(-5)). Additionally, hypomethylation of cg26963277 was associated with lower fasting insulin levels (p = 0.04). CONCLUSIONS/

interpretationTobacco smoking is associated with differential DNA methylation of the diabetes risk genes ANPEP, KCNQ1 and ZMIZ1. Our study highlights potential biological mechanisms connecting tobacco smoking to excess risk of type 2 diabetes.

Indexed as

AgedDiabetes Mellitus, Type 2DNA MethylationFemaleGenome-Wide Association StudyHumansMaleMiddle AgedSmokingDNA methylationGene expressionTobacco smokingType 2 diabetes

Identifiers

PMID26825526
PMCPMC4826423
OpenAlexW2290292445

What OpenQuestion holds

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LicenceCC BY
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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.