@article {8521,
	title = {{Association of dietary folate and vitamin B-12 intake with genome-wide DNA methylation in blood: a large-scale epigenome-wide association analysis in 5841 individuals},
	journal = {Am J Clin Nutr},
	volume = {110},
	year = {2019},
	month = {08},
	pages = {437{\textendash}450},
	abstract = {Folate and vitamin B-12 are essential micronutrients involved in the donation of methyl groups in cellular metabolism. However, associations between intake of these nutrients and genome-wide DNA methylation levels have not been studied comprehensively in humans.\ The aim of this study was to assess whether folate and/or vitamin B-12 intake are asssociated with genome-wide changes in DNA methylation in leukocytes.\ A large-scale epigenome-wide association study of folate and vitamin B-12 intake was performed on DNA from 5841 participants from 10 cohorts using Illumina 450k arrays. Folate and vitamin B-12 intakes were calculated from food-frequency questionnaires (FFQs). Continuous and categorical (low compared with high intake) linear regression mixed models were applied per cohort, controlling for confounders. A meta-analysis was performed to identify significant differentially methylated positions (DMPs) and regions (DMRs), and a pathway analysis was performed on the DMR annotated genes.\ The categorical model resulted in 6 DMPs, which are all negatively associated with folate intake, annotated to FAM64A, WRAP73, FRMD8, CUX1, and LCN8 genes, which have a role in cellular processes including centrosome localization, cell proliferation, and tumorigenesis. Regional analysis showed 74 folate-associated DMRs, of which 73 were negatively associated with folate intake. The most significant folate-associated DMR was a 400-base pair (bp) spanning region annotated to the LGALS3BP gene. In the categorical model, vitamin B-12 intake was associated with 29 DMRs annotated to 48 genes, of which the most significant was a 1100-bp spanning region annotated to the calcium-binding tyrosine phosphorylation-regulated gene (CABYR). Vitamin B-12 intake was not associated with DMPs.\ We identified novel epigenetic loci that are associated with folate and vitamin B-12 intake. Interestingly, we found a negative association between folate and DNA methylation. Replication of these methylation loci is necessary in future studies.},
	author = {Mandaviya, P. R. and Joehanes, R. and Brody, J. and Castillo-Fernandez, J. E. and Dekkers, K. F. and Do, A. N. and Graff, M. and H?nninen, I. K. and Tanaka, T. and de Jonge, E. A. L. and Kiefte-de Jong, J. C. and Absher, D. M. and Aslibekyan, S. and de Rijke, Y. B. and Fornage, M. and Hernandez, D. G. and Hurme, M. A. and Ikram, M. A. and Jacques, P. F. and Justice, A. E. and Kiel, D. P. and Lemaitre, R. N. and Mendelson, M. M. and Mikkil?, V. and Moore, A. Z. and Pallister, T. and Raitakari, O. T. and Schalkwijk, C. G. and Sha, J. and Slagboom, E. P. E. and Smith, C. E. and Stehouwer, C. D. A. and Tsai, P. C. and Uitterlinden, A. G. and van der Kallen, C. J. H. and van Heemst, D. and Arnett, D. K. and Bandinelli, S. and Bell, J. T. and Heijmans, B. T. and Lehtim?ki, T. and Levy, D. and North, K. E. and Sotoodehnia, N. and van Greevenbroek, M. M. J. and van Meurs, J. B. J. and Heil, S. G.}
}
@article {8781,
	title = {{A multi-ethnic epigenome-wide association study of leukocyte DNA methylation and blood lipids},
	journal = {Nat Commun},
	volume = {12},
	year = {2021},
	month = {06},
	pages = {3987},
	abstract = {10.1038/s41467-021-23899-yHere we examine the association between DNA methylation in circulating leukocytes and blood lipids in a multi-ethnic sample of 16,265 subjects. We identify 148, 35, and 4 novel associations among Europeans, African Americans, and Hispanics, respectively, and an additional 186 novel associations through a trans-ethnic meta-analysis. We observe a high concordance in the direction of effects across racial/ethnic groups, a high correlation of effect sizes between high-density lipoprotein and triglycerides, a modest overlap of associations with epigenome-wide association studies of other cardio-metabolic traits, and a largely non-overlap with lipid loci identified to date through genome-wide association studies. Thirty CpGs reached significance in at least 2 racial/ethnic groups including 7 that showed association with the expression of an annotated gene. CpGs annotated to CPT1A showed evidence of being influenced by triglycerides levels. DNA methylation levels of circulating leukocytes show robust and consistent association with blood lipid levels across multiple racial/ethnic groups.},
	author = {Jhun, M. A. and Mendelson, M. and Wilson, R. and Gondalia, R. and Joehanes, R. and Salfati, E. and Zhao, X. and Braun, K. V. E. and Do, A. N. and Hedman, {\r A}. K. and Zhang, T. and Carnero-Montoro, E. and Shen, J. and Bartz, T. M. and Brody, J. A. and Montasser, M. E. and O{\textquoteright}Connell, J. R. and Yao, C. and Xia, R. and Boerwinkle, E. and Grove, M. and Guan, W. and Liliane, P. and Singmann, P. and M{\"u}ller-Nurasyid, M. and Meitinger, T. and Gieger, C. and Peters, A. and Zhao, W. and Ware, E. B. and Smith, J. A. and Dhana, K. and van Meurs, J. and Uitterlinden, A. and Ikram, M. A. and Ghanbari, M. and Zhi, D. and Gustafsson, S. and Lind, L. and Li, S. and Sun, D. and Spector, T. D. and Chen, Y. I. and Damcott, C. and Shuldiner, A. R. and Absher, D. M. and Horvath, S. and Tsao, P. S. and Kardia, S. and Psaty, B. M. and Sotoodehnia, N. and Bell, J. T. and Ingelsson, E. and Chen, W. and Dehghan, A. and Arnett, D. K. and Waldenberger, M. and Hou, L. and Whitsel, E. A. and Baccarelli, A. and Levy, D. and Fornage, M. and Irvin, M. R. and Assimes, T. L.}
}
