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Maternal haemoglobin levels in pregnancy and child DNA methylation: a study in the pregnancy and childhood epigenetics consortium

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Ronkainen, J, Heiskala, A, Vehmeijer, FOL, Lowry, E, Caramaschi, D, Estrada Gutierrez, G, Heiss, JA, Hummel, N, Keikkala, E, Kvist, T, Kupsco, A, Melton, PE ORCID: 0000-0003-4026-2964, Pesce, G, Soomro, MH, Vives-Usano, M, Baiz, N, Binder, E, Czamara, D, Guxens, M, Mustaniemi, S, London, SJ, Rauschert, S, Vaarasmak, M, Vrijheid, M, Ziegler, A-G, Annesi-Maesano, I, Bustamante, M, Huang, R-C, Hummel, S, Just, AC, Kajantie, E, Lahti, J, Lawlor, D, Raikkonen, K, Jarvelin, M-R, Felix, JF and Sebert, S 2021 , 'Maternal haemoglobin levels in pregnancy and child DNA methylation: a study in the pregnancy and childhood epigenetics consortium' , Epigenetics , pp. 1-13 , doi: 10.1080/15592294.2020.1864171.

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Abstract

Altered maternal haemoglobin levels during pregnancy are associated with pre-clinical and clinical conditions affecting the fetus. Evidence from animal models suggests that these associations may be partially explained by differential DNA methylation in the newborn with possible long-term consequences. To test this in humans, we meta-analyzed the epigenome-wide associations of maternal haemoglobin levels during pregnancy with offspring DNA methylation in 3,967 newborn cord blood and 1,534 children and 1,962 adolescent whole-blood samples derived from 10 cohorts. DNA methylation was measured using Illumina Infinium Methylation 450K or MethylationEPIC arrays covering 450,000 and 850,000 methylation sites, respectively. There was no statistical support for the association of maternal haemoglobin levels with offspring DNA methylation either at individual methylation sites or clustered in regions. For most participants, maternal haemoglobin levels were within the normal range in the current study, whereas adverse perinatal outcomes often arise at the extremes. Thus, this study does not rule out the possibility that associations with offspring DNA methylation might be seen in studies with more extreme maternal haemoglobin levels.

Item Type: Article
Authors/Creators:Ronkainen, J and Heiskala, A and Vehmeijer, FOL and Lowry, E and Caramaschi, D and Estrada Gutierrez, G and Heiss, JA and Hummel, N and Keikkala, E and Kvist, T and Kupsco, A and Melton, PE and Pesce, G and Soomro, MH and Vives-Usano, M and Baiz, N and Binder, E and Czamara, D and Guxens, M and Mustaniemi, S and London, SJ and Rauschert, S and Vaarasmak, M and Vrijheid, M and Ziegler, A-G and Annesi-Maesano, I and Bustamante, M and Huang, R-C and Hummel, S and Just, AC and Kajantie, E and Lahti, J and Lawlor, D and Raikkonen, K and Jarvelin, M-R and Felix, JF and Sebert, S
Keywords: DNA methylation, maternal haemoglobin, developmental programming, pregnancy
Journal or Publication Title: Epigenetics
Publisher: Taylor & Francis
ISSN: 1559-2294
DOI / ID Number: 10.1080/15592294.2020.1864171
Copyright Information:

© 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License (http://creativecommons.org/licenses/by-ncnd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.

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