Evidence map›Paper›PMID 30718449›Full record

SynthesisTranslational psychiatry2019

What do DNA methylation studies tell us about depression? A systematic review.

Muzi Li, Carl D'Arcy, Xintong Li, Tieyuan Zhang, Ridha Joober, Xiangfei Meng

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Translational psychiatry, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 4 pooled it
7.3field-weighted citation impact, top 2% 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

70 citing papers in PubMed, 4 syntheses or guidelines pooled it, 128 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Review
  6. Investigating PeripheralBiomolecules · 2026
    Article
  7. Article
  8. Premature aging in serious mental illness.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Review
  9. Review
  10. Epigenetic Mechanisms of Suicidal Behavior Formation: A Review.Medical journal of the Islamic Republic of Iran · 2026
    Review
  11. Article
  12. Article
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
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  19. Article
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10 more citing papers are in PubMed but not listed here.

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 3 institutions in 1 country.

Muzi LiDepartment of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada.
Carl D'ArcySchool of Public Health, University of Saskatchewan, Saskatoon, SK, Canada.
Xintong LiMitacs Globalink, Montreal, QC, Canada.
Tieyuan ZhangDepartment of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada.ORCID http://orcid.org/0000-0002-6368-2606
Ridha JooberDepartment of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada.
Xiangfei MengDepartment of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada. xiangfei.meng@mcgill.ca.
Douglas Mental Health University Institute · CAUniversity of Saskatchewan · CAMitacs · CA

Funding

CIHR PJT-148845
6 · The paper itself

Abstract

There has been a limited number of systematic reviews conducted to summarize the overview of the relationship between DNA methylation and depression, and to critically appraise the roles of major study characteristics in the accuracy of study findings. This systematic review aims to critically appraise the impact of study characteristics on the association between DNA methylation and depression, and summarize the overview of this association. Electronic databases and gray literatures until December 2017 were searched for English-language studies with standard diagnostic criteria of depression. A total of 67 studies were included in this review along with a summary of their study characteristics. We grouped the findings into etiological and treatment studies. Majority of these selected studies were recently published and from developed countries. Whole blood samples were the most studied common tissues. Bisulfite conversion, along with pyrosequencing, was widely used to test the DNA methylation level across all the studies. High heterogeneity existed among the studies in terms of experimental and statistical methodologies and study designs. As recommended by the Cochrane guideline, a systematic review without meta-analysis should be undertaken. This review has, in general, found that DNA methylation modifications were associated with depression. Subgroup analyses showed that most studies found BDNF and SLC6A4 hypermethylations to be associated with MDD or depression in general. In contrast, studies on NR3C1, OXTR, and other genes, which were tested by only few studies, reported mixed findings. More longitudinal studies using standardized experimental and laboratory methodologies are needed in future studies to enable more systematical comparisons and quantitative synthesis.

Indexed as

DNA MethylationDepressionDepressive DisorderHumans

Identifiers

PMID30718449
PMCPMC6362194
OpenAlexW2922125887

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.