Evidence map›Paper›PMID 34341337›Full record

ArticleTranslational psychiatry2021

A machine learning case-control classifier for schizophrenia based on DNA methylation in blood.

Chathura J Gunasekara, Eilis Hannon, Harry MacKay, Cristian Coarfa, Andrew McQuillin, David St Clair, Jonathan Mill, Robert A Waterland

Open access · goldAbstract read
In one paragraph

Article in Translational psychiatry, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 9% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. A comprehensive guide to genomeZhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2025
    Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Identification of important gene signatures in schizophrenia through feature fusion and genetic algorithm.Mammalian genome : official journal of the International Mammalian Genome Society · 2024
    Article
  10. Article
  11. Article
  12. The Potential for Artificial Intelligence Applied to Epigenetics.Mayo Clinic proceedings. Digital health · 2023
    Article
  13. Review
  14. Article
  15. Article
  16. 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 at 5 institutions in 2 countries.

Chathura J GunasekaraUSDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
Eilis HannonUniversity of Exeter Medical School, University of Exeter, Exeter, UK.ORCID 0000-0001-6840-072X
Harry MacKayUSDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA.
Cristian CoarfaDepartment of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.ORCID 0000-0002-4183-4939
Andrew McQuillinDivision of Psychiatry, Faculty of Brain Sciences, University College London, London, UK.ORCID 0000-0003-1567-2240
David St ClairThe Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK.
Jonathan MillUniversity of Exeter Medical School, University of Exeter, Exeter, UK.ORCID 0000-0003-1115-3224
Robert A WaterlandUSDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA. waterland@bcm.edu.ORCID 0000-0002-7401-3408
Children's Nutrition Research Center at Baylor College of Medicine · USUniversity of Exeter · GBBaylor College of Medicine · USFaculty (United Kingdom) · GBUniversity of Aberdeen · GB

Funding

Epigenetic variation at metastable epialleles: Effects on human obesityR01DK111522 · NIDDK · BAYLOR COLLEGE OF MEDICINE · PI COARFA, CRISTIAN, WATERLAND, ROBERT A · 2017 to 2020
$1.8M
Foundation for the National Institutes of Health (Foundation for the National Institutes of Health, Inc.) 1R01DK111522NIDDK NIH HHS R01 DK111522U.S. Department of Agriculture (United States Department of Agriculture) CRIS 3092-5-001-059
6 · The paper itself

Abstract

Epigenetic dysregulation is thought to contribute to the etiology of schizophrenia (SZ), but the cell type-specificity of DNA methylation makes population-based epigenetic studies of SZ challenging. To train an SZ case-control classifier based on DNA methylation in blood, therefore, we focused on human genomic regions of systemic interindividual epigenetic variation (CoRSIVs), a subset of which are represented on the Illumina Human Methylation 450K (HM450) array. HM450 DNA methylation data on whole blood of 414 SZ cases and 433 non-psychiatric controls were used as training data for a classification algorithm with built-in feature selection, sparse partial least squares discriminate analysis (SPLS-DA); application of SPLS-DA to HM450 data has not been previously reported. Using the first two SPLS-DA dimensions we calculated a "risk distance" to identify individuals with the highest probability of SZ. The model was then evaluated on an independent HM450 data set on 353 SZ cases and 322 non-psychiatric controls. Our CoRSIV-based model classified 303 individuals as cases with a positive predictive value (PPV) of 80%, far surpassing the performance of a model based on polygenic risk score (PRS). Importantly, risk distance (based on CoRSIV methylation) was not associated with medication use, arguing against reverse causality. Risk distance and PRS were positively correlated (Pearson r = 0.28, P = 1.28 × 10

Indexed as

DNA MethylationSchizophreniaCase-Control StudiesEpigenesis, GeneticHumansMachine Learning

Identifiers

PMID34341337
PMCPMC8329061
OpenAlexW3187852012

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.