Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis

Detalhes bibliográficos
Autor(a) principal: Bittencourt, Paulo Lisboa
Data de Publicação: 2009
Outros Autores: Marin, Maria Lúcia Carnevale, Couto, Cláudia Alves, Cançado, Eduardo Luiz Rachid, Carrilho, Flair José, Goldberg, Anna Carla
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Clinics
Texto Completo: https://www.revistas.usp.br/clinics/article/view/17956
Resumo: BACKGROUND: Approximately one-half of Brazilian patients with hereditary hemochromatosis (HH) are neither homozygous for the C282Y mutation nor compound heterozygous for the H63D and C282Y mutations that are associated with HH in Caucasians. Other mutations have been described in the HFE gene as well as in genes involved in iron metabolism, such as transferrin receptor 2 (TfR2) and ferroportin 1 (SCL40A1). AIMS: To evaluate the role of HFE, TfR2 and SCL40A1 mutations in Brazilian subjects with HH. PATIENTS AND METHODS: Nineteen male subjects (median age 42 [range: 20-72] years) with HH were evaluated using the Haemochromatosis StripAssay A®. This assay is capable of detecting twelve HFE mutations, which are V53M, V59M, H63D, H63H, S65C, Q127H, P160delC, E168Q, E168X, W169X, C282Y and Q283, four TfR2 mutations, which are E60X, M172K, Y250X, AVAQ594-597del, and two SCL40A1 mutations, which are N144H and V162del. RESULTS: In our cohort, nine (47%) patients were homozygous for the C282Y mutation, two (11%) were heterozygous for the H63D mutation, and one each (5%) was either heterozygous for C282Y or compound heterozygous for C282Y and H63D. No other mutations in the HFE, TfR2 or SCL40A1 genes were observed in the studied patients. CONCLUSIONS: One-third of Brazilian subjects with the classical phenotype of HH do not carry HFE or other mutations that are currently associated with the disease in Caucasians. This observation suggests a role for other yet unknown mutations in the aforementioned genes or in other genes involved in iron homeostasis in the pathogenesis of HH in Brazil.
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spelling Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis Hereditary hemochromatosisIron overloadHFE mutationsGene mutationsBrazil BACKGROUND: Approximately one-half of Brazilian patients with hereditary hemochromatosis (HH) are neither homozygous for the C282Y mutation nor compound heterozygous for the H63D and C282Y mutations that are associated with HH in Caucasians. Other mutations have been described in the HFE gene as well as in genes involved in iron metabolism, such as transferrin receptor 2 (TfR2) and ferroportin 1 (SCL40A1). AIMS: To evaluate the role of HFE, TfR2 and SCL40A1 mutations in Brazilian subjects with HH. PATIENTS AND METHODS: Nineteen male subjects (median age 42 [range: 20-72] years) with HH were evaluated using the Haemochromatosis StripAssay A®. This assay is capable of detecting twelve HFE mutations, which are V53M, V59M, H63D, H63H, S65C, Q127H, P160delC, E168Q, E168X, W169X, C282Y and Q283, four TfR2 mutations, which are E60X, M172K, Y250X, AVAQ594-597del, and two SCL40A1 mutations, which are N144H and V162del. RESULTS: In our cohort, nine (47%) patients were homozygous for the C282Y mutation, two (11%) were heterozygous for the H63D mutation, and one each (5%) was either heterozygous for C282Y or compound heterozygous for C282Y and H63D. No other mutations in the HFE, TfR2 or SCL40A1 genes were observed in the studied patients. CONCLUSIONS: One-third of Brazilian subjects with the classical phenotype of HH do not carry HFE or other mutations that are currently associated with the disease in Caucasians. This observation suggests a role for other yet unknown mutations in the aforementioned genes or in other genes involved in iron homeostasis in the pathogenesis of HH in Brazil. Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo2009-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/clinics/article/view/1795610.1590/S1807-59322009000900003Clinics; Vol. 64 No. 9 (2009); 837-841 Clinics; v. 64 n. 9 (2009); 837-841 Clinics; Vol. 64 Núm. 9 (2009); 837-841 1980-53221807-5932reponame:Clinicsinstname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/clinics/article/view/17956/20021Bittencourt, Paulo LisboaMarin, Maria Lúcia CarnevaleCouto, Cláudia AlvesCançado, Eduardo Luiz RachidCarrilho, Flair JoséGoldberg, Anna Carlainfo:eu-repo/semantics/openAccess2012-05-22T18:48:08Zoai:revistas.usp.br:article/17956Revistahttps://www.revistas.usp.br/clinicsPUBhttps://www.revistas.usp.br/clinics/oai||clinics@hc.fm.usp.br1980-53221807-5932opendoar:2012-05-22T18:48:08Clinics - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
title Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
spellingShingle Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
Bittencourt, Paulo Lisboa
Hereditary hemochromatosis
Iron overload
HFE mutations
Gene mutations
Brazil
title_short Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
title_full Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
title_fullStr Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
title_full_unstemmed Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
title_sort Analysis of HFE and non-HFE gene mutations in Brazilian patients with hemochromatosis
author Bittencourt, Paulo Lisboa
author_facet Bittencourt, Paulo Lisboa
Marin, Maria Lúcia Carnevale
Couto, Cláudia Alves
Cançado, Eduardo Luiz Rachid
Carrilho, Flair José
Goldberg, Anna Carla
author_role author
author2 Marin, Maria Lúcia Carnevale
Couto, Cláudia Alves
Cançado, Eduardo Luiz Rachid
Carrilho, Flair José
Goldberg, Anna Carla
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Bittencourt, Paulo Lisboa
Marin, Maria Lúcia Carnevale
Couto, Cláudia Alves
Cançado, Eduardo Luiz Rachid
Carrilho, Flair José
Goldberg, Anna Carla
dc.subject.por.fl_str_mv Hereditary hemochromatosis
Iron overload
HFE mutations
Gene mutations
Brazil
topic Hereditary hemochromatosis
Iron overload
HFE mutations
Gene mutations
Brazil
description BACKGROUND: Approximately one-half of Brazilian patients with hereditary hemochromatosis (HH) are neither homozygous for the C282Y mutation nor compound heterozygous for the H63D and C282Y mutations that are associated with HH in Caucasians. Other mutations have been described in the HFE gene as well as in genes involved in iron metabolism, such as transferrin receptor 2 (TfR2) and ferroportin 1 (SCL40A1). AIMS: To evaluate the role of HFE, TfR2 and SCL40A1 mutations in Brazilian subjects with HH. PATIENTS AND METHODS: Nineteen male subjects (median age 42 [range: 20-72] years) with HH were evaluated using the Haemochromatosis StripAssay A®. This assay is capable of detecting twelve HFE mutations, which are V53M, V59M, H63D, H63H, S65C, Q127H, P160delC, E168Q, E168X, W169X, C282Y and Q283, four TfR2 mutations, which are E60X, M172K, Y250X, AVAQ594-597del, and two SCL40A1 mutations, which are N144H and V162del. RESULTS: In our cohort, nine (47%) patients were homozygous for the C282Y mutation, two (11%) were heterozygous for the H63D mutation, and one each (5%) was either heterozygous for C282Y or compound heterozygous for C282Y and H63D. No other mutations in the HFE, TfR2 or SCL40A1 genes were observed in the studied patients. CONCLUSIONS: One-third of Brazilian subjects with the classical phenotype of HH do not carry HFE or other mutations that are currently associated with the disease in Caucasians. This observation suggests a role for other yet unknown mutations in the aforementioned genes or in other genes involved in iron homeostasis in the pathogenesis of HH in Brazil.
publishDate 2009
dc.date.none.fl_str_mv 2009-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://www.revistas.usp.br/clinics/article/view/17956
10.1590/S1807-59322009000900003
url https://www.revistas.usp.br/clinics/article/view/17956
identifier_str_mv 10.1590/S1807-59322009000900003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/clinics/article/view/17956/20021
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo
publisher.none.fl_str_mv Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo
dc.source.none.fl_str_mv Clinics; Vol. 64 No. 9 (2009); 837-841
Clinics; v. 64 n. 9 (2009); 837-841
Clinics; Vol. 64 Núm. 9 (2009); 837-841
1980-5322
1807-5932
reponame:Clinics
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Clinics
collection Clinics
repository.name.fl_str_mv Clinics - Universidade de São Paulo (USP)
repository.mail.fl_str_mv ||clinics@hc.fm.usp.br
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