Evidence map›Paper›PMID 28137292›Full record

ArticleGenome biology2017

Correcting for cell-type effects in DNA methylation studies: reference-based method outperforms latent variable approaches in empirical studies.

Mohammad W Hattab, Andrey A Shabalin, Shaunna L Clark, Min Zhao, Gaurav Kumar, Robin F Chan, Lin Ying Xie, Rick Jansen, Laura K M Han, Patrik K E Magnusson and 5 more

Abstract readComment
In one paragraph

Article in Genome biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

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

  1. Pooled it
  2. Article
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  12. Epigenetic aging is accelerated in alcohol use disorder and regulated by genetic variation in APOL2.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
  13. Review
  14. Article
  15. Epigenetic Aging in Major Depressive Disorder.The American journal of psychiatry · 2018
    Article
  16. Review
  17. Review
  18. Oncoscience · 2017
    Article
  19. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors.

Mohammad W HattabCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Andrey A ShabalinCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Shaunna L ClarkCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Min ZhaoCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Gaurav KumarCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Robin F ChanCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Lin Ying XieCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Rick JansenDepartment of Psychiatry, VU University Medical Center/GGZ inGeest, Amsterdam, The Netherlands.
Laura K M HanDepartment of Psychiatry, VU University Medical Center/GGZ inGeest, Amsterdam, The Netherlands.
Patrik K E MagnussonDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, SE-171 77, Stockholm, Sweden.
Gerard van GrootheestDepartment of Psychiatry, VU University Medical Center/GGZ inGeest, Amsterdam, The Netherlands.
Christina M HultmanDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, SE-171 77, Stockholm, Sweden.
Brenda W J H PenninxDepartment of Psychiatry, VU University Medical Center/GGZ inGeest, Amsterdam, The Netherlands.
Karolina A AbergCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA.
Edwin J C G van den OordCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University, Richmond, VA, USA. ejvandenoord@vcu.edu.

Funding

Whole genome profiling to detect schizophrenia methylation markersRC2MH089996 · NIMH · VIRGINIA COMMONWEALTH UNIVERSITY · PI VAN DEN OORD, EDWIN · 2009 to 2010
$4.5M
Research Education in Statistical Genetics of Substance AbuseR25DA026119 · NIDA · VIRGINIA COMMONWEALTH UNIVERSITY · PI NEALE, MICHAEL CHURTON · 2008 to 2018
$3.2M
Developmental methylomics of childhood trauma and its health consequencesR01MH104576 · NIMH · VIRGINIA COMMONWEALTH UNIVERSITY · PI VAN DEN OORD, EDWIN · 2014 to 2018
$3.1M
A longitudinal methylome study to detect biomarkers predicting MDD trajectoriesR01MH099110 · NIMH · VIRGINIA COMMONWEALTH UNIVERSITY · PI VAN DEN OORD, EDWIN · 2013 to 2017
$2.9M
Investigating Methylation Patterns Associated with Alcohol Use and AddictionK01AA021266 · NIAAA · VIRGINIA COMMONWEALTH UNIVERSITY · PI CLARK, SHAUNNA L · 2012 to 2016
$580k
Mediators of methylomic profiles in 1500 schizophrenia cases and controlsR03MH102723 · NIMH · VIRGINIA COMMONWEALTH UNIVERSITY · PI ABERG, KAROLINA ANNA · 2014 to 2015
$153k
NIAAA NIH HHS K01 AA021266NIDA NIH HHS R25 DA026119NIMH NIH HHS R01 MH099110NIMH NIH HHS R01 MH104576NIMH NIH HHS R03 MH102723NIMH NIH HHS RC2 MH089996
6 · The paper itself

Abstract

Based on an extensive simulation study, McGregor and colleagues recently recommended the use of surrogate variable analysis (SVA) to control for the confounding effects of cell-type heterogeneity in DNA methylation association studies in scenarios where no cell-type proportions are available. As their recommendation was mainly based on simulated data, we sought to replicate findings in two large-scale empirical studies. In our empirical data, SVA did not fully correct for cell-type effects, its performance was somewhat unstable, and it carried a risk of missing true signals caused by removing variation that might be linked to actual disease processes. By contrast, a reference-based correction method performed well and did not show these limitations. A disadvantage of this approach is that if reference methylomes are not (publicly) available, they will need to be generated once for a small set of samples. However, given the notable risk we observed for cell-type confounding, we argue that, to avoid introducing false-positive findings into the literature, it could be well worth making this investment.Please see related Correspondence article: https://genomebiology.biomedcentral.com/articles/10/1186/s13059-017-1149-7 and related Research article: https://genomebiology.biomedcentral.com/articles/10.1186/s13059-016-0935-y.

Indexed as

DNA Methylation

Identifiers

PMID28137292
PMCPMC5282865

What OpenQuestion holds

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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.