Please use this identifier to cite or link to this item: https://observatorio.fm.usp.br/handle/OPI/37041
Title: Novel mutations in the bone morphogenetic protein 6 gene in patients with iron overload and non-homozygous genotype for the HFE p.Cys282Tyr mutation
Authors: ALVARENGA, Aline MorganSILVA, Nathalia Kozikas daFONSECA, Paula Fernanda SilvaOLIVEIRA, Theo G. M.MONTEIRO, Jacilene Barbosa da SilvaCANCADO, Rodolfo DelfiniNAOUM, Flavio AugustoDINARDO, Carla LuanaBRISSOT, PierreSANTOS, Paulo Caleb Junior Lima
Citation: BLOOD CELLS MOLECULES AND DISEASES, v.84, article ID 102444, 6p, 2020
Abstract: Background: Five main genes are associated with hemochromatosis; however, current studies show that, in addition to these genes, others may be associated with primary iron overload (IO). One of these is the bone morphogenetic protein 6 ( BMP6 ), which encodes a protein that modulates hepcidin synthesis and, consequently, iron homeostasis. Aim: To identify BMP6 gene pathogenic variants in patients with IO and non-homozygous genotype for the HFE p.Cys282Tyr mutation. Materials and methods: Fifty-three patients with primary IO and non-homozygous genotype for the HFE p.Cys282Tyr were selected. Subsequent bidirectional DNA sequencing of BMP6 exons was performed. Results: Two novel variants were found. One at homozygous state p.Gln158Ter (c.472C T) was pathogenic, the other one at heterozygous state p.Val394Met (c.1180G > A) was of uncertain signi ficance (VUS); the third variant at heterozygous state p.Arg257His (c.770G > A) has already been described and associated with IO. No BMP6 pathogenic variants that would explain iron overload phenotypes were detected in 94% of the studied patients. Conclusion: Identi fication of the BMP6 pathogenic variants in Brazilian patients with primary IO might contribute to the genetic understanding of this phenotype.
Appears in Collections:Artigos e Materiais de Revistas Científicas - FM/Outros
Artigos e Materiais de Revistas Científicas - LIM/31

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