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. 2014 Oct 29:5:4926.
doi: 10.1038/ncomms5926.

Novel loci affecting iron homeostasis and their effects in individuals at risk for hemochromatosis

Beben Benyamin  1 Tonu Esko  2 Janina S Ried  3 Aparna Radhakrishnan  4 Sita H Vermeulen  5 Michela Traglia  6 Martin Gögele  7 Denise Anderson  8 Linda Broer  9 Clara Podmore  10 Jian'an Luan  10 Zoltan Kutalik  11 Serena Sanna  12 Peter van der Meer  13 Toshiko Tanaka  14 Fudi Wang  15 Harm-Jan Westra  16 Lude Franke  16 Evelin Mihailov  17 Lili Milani  18 Jonas Hälldin  18 Juliane Winkelmann  19 Thomas Meitinger  20 Joachim Thiery  21 Annette Peters  22 Melanie Waldenberger  22 Augusto Rendon  23 Jennifer Jolley  24 Jennifer Sambrook  24 Lambertus A Kiemeney  25 Fred C Sweep  26 Cinzia F Sala  27 Christine Schwienbacher  7 Irene Pichler  7 Jennie Hui  28 Ayse Demirkan  29 Aaron Isaacs  30 Najaf Amin  31 Maristella Steri  12 Gérard Waeber  32 Niek Verweij  13 Joseph E Powell  33 Dale R Nyholt  34 Andrew C Heath  35 Pamela A F Madden  35 Peter M Visscher  33 Margaret J Wright  34 Grant W Montgomery  34 Nicholas G Martin  34 Dena Hernandez  36 Stefania Bandinelli  37 Pim van der Harst  38 Manuela Uda  12 Peter Vollenweider  32 Robert A Scott  10 Claudia Langenberg  10 Nicholas J Wareham  10 InterAct ConsortiumCornelia van Duijn  39 John Beilby  28 Peter P Pramstaller  40 Andrew A Hicks  7 Willem H Ouwehand  24 Konrad Oexle  41 Christian Gieger  42 Andres Metspalu  18 Clara Camaschella  43 Daniela Toniolo  27 Dorine W Swinkels  26 John B Whitfield  34
Collaborators, Affiliations

Novel loci affecting iron homeostasis and their effects in individuals at risk for hemochromatosis

Beben Benyamin et al. Nat Commun. .

Erratum in

  • Corrigendum: Novel loci affecting iron homeostasis and their effects in individuals at risk for hemochromatosis.
    Benyamin B, Esko T, Ried JS, Radhakrishnan A, Vermeulen SH, Traglia M, Gögele M, Anderson D, Broer L, Podmore C, Luan J, Kutalik Z, Sanna S, van der Meer P, Tanaka T, Wang F, Westra HJ, Franke L, Mihailov E, Milani L, Hälldin J, Winkelmann J, Meitinger T, Thiery J, Peters A, Waldenberger M, Rendon A, Jolley J, Sambrook J, Kiemeney LA, Sweep FC, Sala CF, Schwienbacher C, Pichler I, Hui J, Demirkan A, Isaacs A, Amin N, Steri M, Waeber G, Verweij N, Powell JE, Nyholt DR, Heath AC, Madden PAF, Visscher PM, Wright MJ, Montgomery GW, Martin NG, Hernandez D, Bandinelli S, van der Harst P, Uda M, Vollenweider P, Scott RA, Langenberg C, Wareham NJ, van Duijn C, Beilby J, Pramstaller PP, Hicks AA, Ouwehand WH, Oexle K, Gieger C, Metspalu A, Camaschella C, Toniolo D, Swinkels DW, Whitfield JB. Benyamin B, et al. Nat Commun. 2015 Mar 30;6:6542. doi: 10.1038/ncomms7542. Nat Commun. 2015. PMID: 25817829 Free PMC article. No abstract available.

Abstract

Variation in body iron is associated with or causes diseases, including anaemia and iron overload. Here, we analyse genetic association data on biochemical markers of iron status from 11 European-population studies, with replication in eight additional cohorts (total up to 48,972 subjects). We find 11 genome-wide-significant (P<5 × 10(-8)) loci, some including known iron-related genes (HFE, SLC40A1, TF, TFR2, TFRC, TMPRSS6) and others novel (ABO, ARNTL, FADS2, NAT2, TEX14). SNPs at ARNTL, TF, and TFR2 affect iron markers in HFE C282Y homozygotes at risk for hemochromatosis. There is substantial overlap between our iron loci and loci affecting erythrocyte and lipid phenotypes. These results will facilitate investigation of the roles of iron in disease.

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Conflict of interest statement

Conflict Interests: None declared.

Figures

Figure 1
Figure 1. Manhattan plots for the associations between SNPs and iron status (serum iron, transferrin, transferrin saturation and ferritin)
The −log(p) values are from inverse-variance-weighted meta-analysis of the combined Discovery + Replication datasets for SNPs taken forward for replication, otherwise from the Discovery datasets only. Genes are assigned to the loci as follows: 1 SLC40A1; 2 TF; 3 TFRC; 4 HFE; 5 TFR2; 6 NAT2; 7 ABO; 8 ARNTL; 9 FADS2; 10 TEX14; 11 TMPRSS6. Note that the y-axis for −log(p) values is truncated at 20.
Figure 2
Figure 2. Comparison of results for serum iron with regulatory features at the chromosome 7 (TFR2) locus
From bottom: regional association plot with recombination rate and −log(p) values for serum iron; documented eQTL locations for TFR2 expression (from left to right: rs10247962, rs4729598, rs7457868, rs4729600, rs1052897); ENCODE data on histone modification. P-values for serum iron at rs7385804 and rs2075672 are shown as text (Final p) for the Discovery + Replication dataset, but positions for all SNPs on the y-axis are determined by the Discovery dataset only.
Figure 3
Figure 3. Q-Q plots of the association p-values for iron, transferrin and ferritin at loci previously reported to be significant for (a) erythrocyte phenotypes and (b) plasma lipid phenotypes
For clarity, the y-axes only extend to p < 10−8 or p < 10−6 so that two associations with observed p < 10−8 for erythrocyte loci (at HFE and TMPRSS6) and four associations with p < 10−6 for lipid loci (at ABO, FADS2, HFE and NAT2) are not plotted. The interrupted line in each plot is the line of equivalence, observed = expected.

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