FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México

Abstract Background Fanconi anemia (FA) (OMIM #227650) is a rare hereditary disease characterized by genomic instability. The clinical phenotype involves malformations, bone marrow failure, and cancer predisposition. Genetic heterogeneity is a remarkable feature of FA; at least 22 FANC genes are kno...

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Main Authors: Benilde García‐de Teresa, Sara Frias, Bertha Molina, María Teresa Villarreal, Alfredo Rodriguez, Alessandra Carnevale, Gerardo López‐Hernández, Lilia Vollbrechtshausen, Alberto Olaya‐Vargas, Leda Torres
Format: Article
Language:English
Published: Wiley 2019-06-01
Series:Molecular Genetics & Genomic Medicine
Subjects:
Online Access:https://doi.org/10.1002/mgg3.710
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author Benilde García‐de Teresa
Sara Frias
Bertha Molina
María Teresa Villarreal
Alfredo Rodriguez
Alessandra Carnevale
Gerardo López‐Hernández
Lilia Vollbrechtshausen
Alberto Olaya‐Vargas
Leda Torres
author_facet Benilde García‐de Teresa
Sara Frias
Bertha Molina
María Teresa Villarreal
Alfredo Rodriguez
Alessandra Carnevale
Gerardo López‐Hernández
Lilia Vollbrechtshausen
Alberto Olaya‐Vargas
Leda Torres
author_sort Benilde García‐de Teresa
collection DOAJ
description Abstract Background Fanconi anemia (FA) (OMIM #227650) is a rare hereditary disease characterized by genomic instability. The clinical phenotype involves malformations, bone marrow failure, and cancer predisposition. Genetic heterogeneity is a remarkable feature of FA; at least 22 FANC genes are known to cooperate in a unique FA/BRCA repair pathway. A common rule on the mutations found in these genes is allelic heterogeneity, except for mutations known to have arisen from a founder effect like the FANCC c.67delG in the Dutch Mennonite Community. Here, we present an 11‐year‐old male patient, member of the Mennonite Community of Tamaulipas México, with a clinical and cytogenetic diagnosis of FA. Method Chromosome fragility test was performed in all siblings. Genomic DNA was obtained from peripheral blood samples. Sanger sequencing was used to identify the FANCC c.67delG mutation (NC_000009.11(NM_000136.2):c.67delG p.(Asp23IlefsTer23)) and its accompanying haplotype. Results The FANCC c.67delG mutation in 13 members of his family confirmed a FA diagnosis in two of his siblings and identified heterozygous carriers. Haplotype analysis supports that in this family, FA is caused by the founder mutation that initially appeared in Mennonite Dutch and followed this population's migrations through Canada and further to Mexico. Conclusion The identification of the FANCC c.67delG mutation in this family not only allows proper genetic counseling, but it also grants the possibility to raise awareness of FA risk among the Mennonite community living in Mexico.
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spelling doaj.art-46ea93e8662542388c92df49b79162f52022-12-21T19:46:54ZengWileyMolecular Genetics & Genomic Medicine2324-92692019-06-0176n/an/a10.1002/mgg3.710FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, MéxicoBenilde García‐de Teresa0Sara Frias1Bertha Molina2María Teresa Villarreal3Alfredo Rodriguez4Alessandra Carnevale5Gerardo López‐Hernández6Lilia Vollbrechtshausen7Alberto Olaya‐Vargas8Leda Torres9Laboratorio de Citogenética Instituto Nacional de Pediatría Ciudad de México MéxicoLaboratorio de Citogenética Instituto Nacional de Pediatría Ciudad de México MéxicoLaboratorio de Citogenética Instituto Nacional de Pediatría Ciudad de México MéxicoLaboratorio de Enfermedades Cardiovasculares Instituto Nacional de Medicina Genómica Ciudad de México MéxicoLaboratorio de Citogenética Instituto Nacional de Pediatría Ciudad de México MéxicoLaboratorio de Enfermedades Mendelianas Instituto Nacional de Medicina Genómica Ciudad de México MéxicoServicio de Trasplante de Células Progenitoras Hematopoyéticas Instituto Nacional de Pediatría Ciudad de México MéxicoServicio de Oncología Hospital Infantil de Tamaulipas Ciudad Victoria, Tamaulipas MéxicoServicio de Trasplante de Células Progenitoras Hematopoyéticas Instituto Nacional de Pediatría Ciudad de México MéxicoLaboratorio de Citogenética Instituto Nacional de Pediatría Ciudad de México MéxicoAbstract Background Fanconi anemia (FA) (OMIM #227650) is a rare hereditary disease characterized by genomic instability. The clinical phenotype involves malformations, bone marrow failure, and cancer predisposition. Genetic heterogeneity is a remarkable feature of FA; at least 22 FANC genes are known to cooperate in a unique FA/BRCA repair pathway. A common rule on the mutations found in these genes is allelic heterogeneity, except for mutations known to have arisen from a founder effect like the FANCC c.67delG in the Dutch Mennonite Community. Here, we present an 11‐year‐old male patient, member of the Mennonite Community of Tamaulipas México, with a clinical and cytogenetic diagnosis of FA. Method Chromosome fragility test was performed in all siblings. Genomic DNA was obtained from peripheral blood samples. Sanger sequencing was used to identify the FANCC c.67delG mutation (NC_000009.11(NM_000136.2):c.67delG p.(Asp23IlefsTer23)) and its accompanying haplotype. Results The FANCC c.67delG mutation in 13 members of his family confirmed a FA diagnosis in two of his siblings and identified heterozygous carriers. Haplotype analysis supports that in this family, FA is caused by the founder mutation that initially appeared in Mennonite Dutch and followed this population's migrations through Canada and further to Mexico. Conclusion The identification of the FANCC c.67delG mutation in this family not only allows proper genetic counseling, but it also grants the possibility to raise awareness of FA risk among the Mennonite community living in Mexico.https://doi.org/10.1002/mgg3.710FANCCFANCC c.67delGfanconi anemiaMennonite
spellingShingle Benilde García‐de Teresa
Sara Frias
Bertha Molina
María Teresa Villarreal
Alfredo Rodriguez
Alessandra Carnevale
Gerardo López‐Hernández
Lilia Vollbrechtshausen
Alberto Olaya‐Vargas
Leda Torres
FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México
Molecular Genetics & Genomic Medicine
FANCC
FANCC c.67delG
fanconi anemia
Mennonite
title FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México
title_full FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México
title_fullStr FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México
title_full_unstemmed FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México
title_short FANCC Dutch founder mutation in a Mennonite family from Tamaulipas, México
title_sort fancc dutch founder mutation in a mennonite family from tamaulipas mexico
topic FANCC
FANCC c.67delG
fanconi anemia
Mennonite
url https://doi.org/10.1002/mgg3.710
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