Evidence map›Paper›PMID 27494297›Full record

ArticleEpigenetics2016

Cell type specific DNA methylation in cord blood: A 450K-reference data set and cell count-based validation of estimated cell type composition.

Kristina Gervin, Christian Magnus Page, Hans Christian D Aass, Michelle A Jansen, Heidi Elisabeth Fjeldstad, Bettina Kulle Andreassen, Liesbeth Duijts, Joyce B van Meurs, Menno C van Zelm, Vincent W Jaddoe and 7 more

Open access · bronzeAbstract readValidation Study
In one paragraph

Article in Epigenetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed, 9 pooled it
6.6field-weighted citation impact, top 3% 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

61 citing papers in PubMed, 9 syntheses or guidelines pooled it, 109 citations in OpenAlex.

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1 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

17 authors at 5 institutions in 3 countries.

Kristina Gervina Department of Medical Genetics , Oslo University Hospital , Oslo , Norway.
Christian Magnus Pageb Division of Mental and Physical Health , Norwegian Institute of Public Health , Oslo , Norway.
Hans Christian D Aassc Department of Medical Biochemistry , Oslo University Hospital , Oslo , Norway.
Michelle A Jansend The Generation R Study Group, Erasmus MC , University Medical Center Rotterdam , the Netherlands.
Heidi Elisabeth Fjeldstadg Departments of Obstetrics and Gynecology , Oslo University Hospital , Oslo , Norway.
Bettina Kulle Andreassenh Cancer Registry of Norway , Institute of population based Cancer Research , Oslo , Norway.
Liesbeth Duijtsd The Generation R Study Group, Erasmus MC , University Medical Center Rotterdam , the Netherlands.
Joyce B van Meursl Department of Internal Medicine, Erasmus MC , University Medical Center Rotterdam , the Netherlands.
Menno C van Zelmm Department of Immunology, Erasmus MC , University Medical Center Rotterdam , the Netherlands.
Vincent W Jaddoed The Generation R Study Group, Erasmus MC , University Medical Center Rotterdam , the Netherlands.
Hedvig Nordengo Pharmacoepidemiology and Drug Safety Research Group, Department of Pharmacy, School of Pharmacy , University of Oslo , Norway.
Gunn Peggy Knudsenq Health Data and Digitalisation , Norwegian Institute of Public Health , Oslo , Norway.
Per Magnusq Health Data and Digitalisation , Norwegian Institute of Public Health , Oslo , Norway.
Wenche Nystadb Division of Mental and Physical Health , Norwegian Institute of Public Health , Oslo , Norway.
Anne Cathrine Staffg Departments of Obstetrics and Gynecology , Oslo University Hospital , Oslo , Norway.
Janine F Felixd The Generation R Study Group, Erasmus MC , University Medical Center Rotterdam , the Netherlands.
Robert Lylea Department of Medical Genetics , Oslo University Hospital , Oslo , Norway.
Erasmus MC · NLOslo University Hospital · NONorwegian Institute of Public Health · NOCancer Registry of Norway · NOUniversity of Oslo · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Epigenome-wide association studies of prenatal exposure to different environmental factors are becoming increasingly common. These studies are usually performed in umbilical cord blood. Since blood comprises multiple cell types with specific DNA methylation patterns, confounding caused by cellular heterogeneity is a major concern. This can be adjusted for using reference data consisting of DNA methylation signatures in cell types isolated from blood. However, the most commonly used reference data set is based on blood samples from adult males and is not representative of the cell type composition in neonatal cord blood. The aim of this study was to generate a reference data set from cord blood to enable correct adjustment of the cell type composition in samples collected at birth. The purity of the isolated cell types was very high for all samples (>97.1%), and clustering analyses showed distinct grouping of the cell types according to hematopoietic lineage. We explored whether this cord blood and the adult peripheral blood reference data sets impact the estimation of cell type composition in cord blood samples from an independent birth cohort (MoBa, n = 1092). This revealed significant differences for all cell types. Importantly, comparison of the cell type estimates against matched cell counts both in the cord blood reference samples (n = 11) and in another independent birth cohort (Generation R, n = 195), demonstrated moderate to high correlation of the data. This is the first cord blood reference data set with a comprehensive examination of the downstream application of the data through validation of estimated cell types against matched cell counts.

Indexed as

DNA MethylationAdultBlood CellsFemaleFetal BloodFlow CytometryHumansInfant, NewbornMalePregnancyReference StandardsCellular heterogeneitycord bloodDNA methylationEWASreference data set

Identifiers

PMID27494297
PMCPMC5048717
OpenAlexW2503964352

What OpenQuestion holds

Textmetadata
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.