Evidence map›Paper›PMID 32425094›Full record

SynthesisEpigenetics2020

Test-statistic inflation in methylome-wide association studies.

Jerry Guintivano, Andrey A Shabalin, Robin F Chan, David R Rubinow, Patrick F Sullivan, Samantha Meltzer-Brody, Karolina A Aberg, Edwin J C G van den Oord

Abstract readSystematic Review
In one paragraph

Synthesis in Epigenetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–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

20 citing papers in PubMed.

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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

8 authors.

Jerry GuintivanoDepartment of Psychiatry, University of North Carolina , Chapel Hill, NC, USA.
Andrey A ShabalinDepartment of Psychiatry, University of Utah , Salt Lake City, UT, USA.ORCID 0000-0003-0309-6821
Robin F ChanCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University , Richmond, VA, USA.ORCID 0000-0002-1774-4087
David R RubinowDepartment of Psychiatry, University of North Carolina , Chapel Hill, NC, USA.
Patrick F SullivanDepartment of Psychiatry, University of North Carolina , Chapel Hill, NC, USA.
Samantha Meltzer-BrodyDepartment of Psychiatry, University of North Carolina , Chapel Hill, NC, USA.
Karolina A AbergCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University , Richmond, VA, USA.ORCID 0000-0001-6103-5168
Edwin J C G van den OordCenter for Biomarker Research and Precision Medicine, Virginia Commonwealth University , Richmond, VA, USA.

Funding

Identifying Biomarkers for Post-Partum Depression in African-American WomenR01MH095992 · NIMH · UNIV OF NORTH CAROLINA CHAPEL HILL · PI RUBINOW, DAVID R., SULLIVAN, PATRICK F · 2012 to 2015
$5.2M
Schizophrenia case-control study of neonatal and post onset methylomesR01MH109525 · NIMH · VIRGINIA COMMONWEALTH UNIVERSITY · PI ABERG, KAROLINA ANNA · 2017 to 2020
$2.3M
NIMH NIH HHS R01 MH095992NIMH NIH HHS R01 MH109525
6 · The paper itself

Abstract

Recent years have seen a surge of methylome-wide association studies (MWAS). We observed that many of these studies suffer from test statistic inflation that is most likely caused by commonly used quality control (QC) pipelines not going far enough to remove technical artefacts. To support this claim, we reanalysed GEO datasets with an improved QC pipeline that reduced test-statistic inflation parameter lambda from the original mean/median of 20.16/15.17 to 3.07/1.14. Furthermore, the mean/median number of methylome-wide significant findings was reduced by 65,688/57,805 loci after more thorough QC. To avoid such false positives we argue for more extensive QC and that reporting the test-statistic inflation parameter lambda become standard for all MWAS allowing readers to better assess the risk of false discoveries.

Indexed as

EpigenomeEpigenomicsGenome-Wide Association StudyHumansReproducibility of ResultsDNA methylationepigeneticsreproducibility

Identifiers

PMID32425094
PMCPMC7595582

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.