Evidence map›Paper›PMID 34732805›Full record

ArticleScientific reports2021

The relationship of smoking to cg05575921 methylation in blood and saliva DNA samples from several studies.

Kelsey Dawes, Allan Andersen, Rachel Reimer, James A Mills, Eric Hoffman, Jeffrey D Long, Shelly Miller, Robert Philibert

Abstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

26 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  9. Review
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  11. Biochemical Diagnosis in Substance and Non-substance Addiction.Advances in experimental medicine and biology · 2025
    Review
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Epigenetic biomarkers for smoking cessation.Addiction neuroscience · 2023
    Article
  18. Review
  19. Review
  20. Article
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

8 authors.

Kelsey DawesDepartment of Psychiatry, University of Iowa, Iowa City, IA, 52242, USA.
Allan AndersenDepartment of Psychiatry, University of Iowa, Iowa City, IA, 52242, USA.
Rachel ReimerDepartment of Public Health, Des Moines University, Des Moines, IA, 50312, USA.
James A MillsDepartment of Psychiatry, University of Iowa, Iowa City, IA, 52242, USA.
Eric HoffmanDepartment of Radiology, University of Iowa, Iowa City, IA, 52242, USA.
Jeffrey D LongDepartment of Psychiatry, University of Iowa, Iowa City, IA, 52242, USA.
Shelly MillerBehavioral Diagnostics LLC, Coralville, IA, 52241, USA.
Robert PhilibertDepartment of Psychiatry, University of Iowa, Iowa City, IA, 52242, USA. robert-philibert@uiowa.edu.

Funding

Quantitative PCR Platform for The Assessment of Alcohol ConsumptionR44AA022041 · NIAAA · BD HOLDING, INC. · PI PHILIBERT, ROBERT A · 2016 to 2017
$1.4M
A Quantitative Epigenetic Test for Guiding Smoking Cessation TherapyR44CA213507 · NCI · BD HOLDING, INC. · PI PHILIBERT, ROBERT A · 2016 to 2017
$1.3M
NCI NIH HHS R44 CA213507NIAAA NIH HHS R44 AA022041
6 · The paper itself

Abstract

Numerous studies have shown that cg05575921 methylation decreases in response to smoking. However, secondary to methodological issues, the magnitude and dose dependency of that response is as of yet unclear. This lack of certainty is a barrier to the use of DNA methylation clinically to assess and monitor smoking status. To better define this relationship, we conducted a joint analysis of methylation sensitive PCR digital (MSdPCR) assessments of cg05575921 methylation in whole blood and/or saliva DNA to smoking using samples from 421 smokers and 423 biochemically confirmed non-smokers from 4 previously published studies. We found that cg05575921 methylation manifested a curvilinear dose dependent decrease in response to increasing cigarette consumption. In whole blood DNA, the Receiver Operating Characteristic (ROC) Area Under the Curve (AUC) of cg05575921 methylation for predicting daily smoking status was 0.98. In saliva DNA, the gross AUC was 0.91 with correction for cellular heterogeneity improving the AUC to 0.94. Methylation status was significantly associated with the Fagerstrom Test for Nicotine Dependence score, but with significant sampling heterogeneity. We conclude that MSdPCR assessments of cg05575921 methylation are a potentially powerful, clinically implementable tool for the assessment and management of smoking.

Indexed as

CpG IslandsDNA MethylationEpigenesis, GeneticBasic Helix-Loop-Helix ProteinsCase-Control StudiesDNAHumansIowaMalePolymerase Chain ReactionRepressor ProteinsROC CurveSalivaSmokingAHRR protein, humanBasic Helix-Loop-Helix ProteinsDNARepressor Proteins

Identifiers

PMID34732805
PMCPMC8566492

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.