Evidence map›Paper›PMID 34388220›Full record

ArticlePloS one2021

Cohort profile: Epigenetics in Pregnancy (EPIPREG) - population-based sample of European and South Asian pregnant women with epigenome-wide DNA methylation (850k) in peripheral blood leukocytes.

Nicolas Fragoso-Bargas, Julia O Opsahl, Nadezhda Kiryushchenko, Yvonne Böttcher, Sindre Lee-Ødegård, Elisabeth Qvigstad, Kåre Rønn Richardsen, Christin W Waage, Line Sletner, Anne Karen Jenum and 5 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 6% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  5. Article
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  8. Article
  9. Multigenerational diabetes mellitus.Frontiers in endocrinology · 2023
    Review
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  11. Observational
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

15 authors at 6 institutions in 5 countries.

Nicolas Fragoso-BargasDepartment of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.ORCID 0000-0002-6412-7671
Julia O OpsahlInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.
Nadezhda KiryushchenkoDepartment of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.
Yvonne BöttcherInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.
Sindre Lee-ØdegårdInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.ORCID 0000-0002-0670-7555
Elisabeth QvigstadDepartment of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.
Kåre Rønn RichardsenFaculty of Health Sciences, Department of Physiotherapy, Oslo Metropolitan University, Oslo, Norway.ORCID 0000-0002-5911-4876
Christin W WaageFaculty of Health Sciences, Department of Physiotherapy, Oslo Metropolitan University, Oslo, Norway.
Line SletnerInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.
Anne Karen JenumDepartment of General Practice, General Practice Research Unit (AFE), Institute of Health and Society, University of Oslo, Oslo, Norway.
Rashmi B PrasadLund University Diabetes Centre, Malmö, Sweden.ORCID 0000-0002-4400-6741
Leif C GroopLund University Diabetes Centre, Malmö, Sweden.
Gunn-Helen MoenInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.ORCID 0000-0002-8768-0904
Kåre I BirkelandDepartment of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.
Christine SommerDepartment of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway.
Oslo University Hospital · NOUniversity of Oslo · NOLund University · SEOsloMet – Oslo Metropolitan University · NOHelmholtz Centre for Environmental Research · DEThe University of Queensland · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pregnancy is a valuable model to study the association between DNA methylation and several cardiometabolic traits, due to its direct potential to influence mother's and child's health. Epigenetics in Pregnancy (EPIPREG) is a population-based sample with the aim to study associations between DNA-methylation in pregnancy and cardiometabolic traits in South Asian and European pregnant women and their offspring. This cohort profile paper aims to present our sample with genetic and epigenetic data and invite researchers with similar cohorts to collaborative projects, such as replication of ours or their results and meta-analysis. In EPIPREG we have quantified epigenome-wide DNA methylation in maternal peripheral blood leukocytes in gestational week 28±1 in Europeans (n = 312) and South Asians (n = 168) that participated in the population-based cohort STORK Groruddalen, in Norway. DNA methylation was measured with Infinium MethylationEPIC BeadChip (850k sites), with technical validation of four CpG sites using bisulphite pyrosequencing in a subset (n = 30). The sample is well characterized with few missing data on e.g. genotype, universal screening for gestational diabetes, objectively measured physical activity, bioelectrical impedance, anthropometrics, biochemical measurements, and a biobank with maternal serum and plasma, urine, placenta tissue. In the offspring, we have repeated ultrasounds during pregnancy, cord blood, and anthropometrics up to 4 years of age. We have quantified DNA methylation in peripheral blood leukocytes in nearly all eligible women from the STORK Groruddalen study, to minimize the risk of selection bias. Genetic principal components distinctly separated Europeans and South Asian women, which fully corresponded with the self-reported ethnicity. Technical validation of 4 CpG sites from the methylation bead chip showed good agreement with bisulfite pyrosequencing. We plan to study associations between DNA methylation and cardiometabolic traits and outcomes.

Indexed as

DNA MethylationAdultAnthropometryAsian PeopleChild HealthCohort StudiesEpigenomeExerciseFemaleHumansLeukocytes, MononuclearMothersNorwayPregnancySurveys and QuestionnairesWhite People

Identifiers

PMID34388220
PMCPMC8362992
OpenAlexW3190816103

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.