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Frecuencia de la mutación 185delAG en el gen BRCA1 en mujeres chilenas sanas con antecedentes familiares de cáncer de mama / Frequency of the 185delAG mutation in the BRCA1 gene in chilean healthy women with family history of breast cancer
Jara Sosa, Lilian; Ampuero L., Sandra; Seccia T., Lorena; Bustamante P., Mario; Blanco Castillo, Rafael; Santibáñez V., Eudocia; Reyes V., José Miguel; Ojeda Fernández, José Manuel.
  • Jara Sosa, Lilian; Universidad de Chile. Facultad de Medicina. ICBM. Programa de Genética Humana. CL
  • Ampuero L., Sandra; Universidad de Chile. Facultad de Medicina. Centro de Prevención del Cáncer. CL
  • Seccia T., Lorena; Corporación Nacional del Cáncer.
  • Bustamante P., Mario; Universidad de Chile. Facultad de Medicina. ICBM. Programa de Genética Humana. CL
  • Blanco Castillo, Rafael; Universidad de Chile. Facultad de Medicina. Centro de Prevención del Cáncer. CL
  • Santibáñez V., Eudocia; Universidad de Chile. Facultad de Medicina. ICBM. Programa de Genética Humana. CL
  • Reyes V., José Miguel; Corporación Nacional del Cáncer.
  • Ojeda Fernández, José Manuel; Universidad de Chile. Facultad de Medicina. Centro de Prevención del Cáncer. CL
Rev. méd. Chile ; 130(10): 1113-1123, oct. 2002. ilus
Artigo em Espanhol | LILACS | ID: lil-339173
RESUMO

Background:

Breast cancer is the most common malignancy among women, and is the second cause of cancer mortality among Chilean women. Female mortality due to breast cancer in Chile has shown a steady increase from 9.5 deaths per 100.000 women in 1985 to 12.8 deaths per 100.000 in 1995. A family history of breast cancer is one of the main risk factors for the development of the disease. BRCA1 and BRCA2 are two major hereditary breast cancer susceptibility genes. Mutations in these genes are associated to inherited breast cancer; 664 predisposing mutations have been described, but in specific populations only some of them, such as 185delAG have been found to be associated with susceptibility to breast cancer.

Aim:

To establish the frequency of the 185delAG mutation in the BRCA1 gene in Chilean healthy women with a family history of breast cancer. Patients and

Methods:

The 185delAG mutation was studied by mismatch polymerase chain (PCR) reaction in 382 Chilean healthy women with at least two relatives affected with breast cancer. The PCR products were digested with the restriction enzyme HinfI. Digestion of the normal allele (170 pb fragment) produces a 150 pb fragment; the PCR product for the mutant allele does not contain a site for HinfI and therefore remains as a 170 bp fragment after digestion.

Results:

One of the 382 healthy women presented the fragment of 170 pb after digestion with HinfI suggesting that she was heterozygous carrier for this mutation. The mutant patient had a mammography without suspicion of cancer.

Conclusions:

The frequency of the 185delAG mutation in BRCA1 was 0.26 percent (1/382) in Chilean healthy women with a family history of breast cancer
Assuntos
Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Neoplasias da Mama / Análise Mutacional de DNA / Genes BRCA1 Tipo de estudo: Fatores de risco Limite: Adulto / Feminino / Humanos País/Região como assunto: América do Sul / Chile Idioma: Espanhol Revista: Rev. méd. Chile Assunto da revista: Medicina Ano de publicação: 2002 Tipo de documento: Artigo / Documento de projeto País de afiliação: Chile Instituição/País de afiliação: Universidad de Chile/CL

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Neoplasias da Mama / Análise Mutacional de DNA / Genes BRCA1 Tipo de estudo: Fatores de risco Limite: Adulto / Feminino / Humanos País/Região como assunto: América do Sul / Chile Idioma: Espanhol Revista: Rev. méd. Chile Assunto da revista: Medicina Ano de publicação: 2002 Tipo de documento: Artigo / Documento de projeto País de afiliação: Chile Instituição/País de afiliação: Universidad de Chile/CL