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Genetic contribution to iron status: SNPs related to iron deficiency anaemia and fine mapping of CACNA2D3 calcium channel subunit

AuthorsBaeza-Richer, Carlos; Arroyo Pardo, E.; Blanco Rojo, R. ; Toxqui, Laura ; Remacha, A. F.; Vaquero, M. Pilar ; López Parra, Ana M.
Issue Date2015
PublisherAcademic Press
CitationBlood Cells, Molecules, and Diseases 55: 273- 280 (2015)
Abstract© 2015 Elsevier Inc. Numerous studies associate genetic markers with iron- and erythrocyte-related parameters, but few relate them to iron-clinical phenotypes. Novel SNP rs1375515, located in a subunit of the calcium channel gene CACNA2D3, is associated with a higher risk of anaemia. The aim of this study is to further investigate the association of this SNP with iron-related parameters and iron-clinical phenotypes, and to explore the potential role of calcium channel subunit region in iron regulation. Furthermore, we aim to replicate the association of other SNPs reported previously in our population. We tested 45 SNPs selected via systematic review and fine mapping of CACNA2D3 region, with haematological and biochemical traits in 358 women of reproductive age. Multivariate analyses include back-step logistic regression and decision trees. The results replicate the association of SNPs with iron-related traits, and also confirm the protective effect of both A allele of rs1800562 (HFE) and G allele of rs4895441 (HBS1L- MYB). The risk of developing anaemia is increased in reproductive age women carriers of A allele of rs1868505 (CACNA2D3) and/or T allele of rs13194491 (HIST1H2BJ). Association of SNPs from fine mapping with ferritin and serum iron suggests that calcium channels could be a potential pathway for iron uptake in physiological conditions.
Identifiersdoi: 10.1016/j.bcmd.2015.07.008
issn: 1096-0961
Appears in Collections:(ICTAN) Artículos
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