Relación entre la amplificación del oncogén C-erbB-2 y parámetros histológicos con sobrevida libre de enfermedad en pacientes con cáncer de mama / Relationship of oncogene CerbB2 amplification in breast cancer with pathological parameters and disease free survival
Rev. méd. Chile
; 133(2): 151-157, feb. 2005. tab
Article
en Es
| LILACS
| ID: lil-398046
Biblioteca responsable:
CL12.1
ABSTRACT
Background:
Protooncogene cerbB2 is located in chromosome 17 region q21 and codifies a 185 Kd protein, with tyrosine kinase activity. The amplification of this gene is associated with relapse and lower survival in breast cancer. Overexpression of this gene can be detected by immunohistochemistry (IHC). However, fluorescence in situ hybridization (FISH) and chromogenic in situ hybridization (CISH) allow the simultaneous analysis of morphology and overexpression of the gene.Aim:
To evaluate the relationship of c-erbB2 oncogene amplification measured by FISH with histological graduation, presence of positive Iymph nodes and evolution of breast cancer. Patients andmethods:
One hundred and ten tissue samples of invasive ductal or lobulillar breast cancer, positive for cerbB2 oncogene by IHC were analysed. The presence of c-erbB2 oncogene amplification was subsequently analyzed by FISH.Results:
There was a significant association of c-erbB2 amplification by FISH with pathological graduation of the tumor, number of regional Iymph nodes involved and disease free survival.Conclusions:
Proto-oncogene cerbB2 amplification is a good indicator of bad prognosis in invasive breast cancer.
Texto completo:
1
Colección:
01-internacional
Base de datos:
LILACS
Asunto principal:
Neoplasias de la Mama
/
Amplificación de Genes
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Female
/
Humans
País/Región como asunto:
America do sul
/
Chile
Idioma:
Es
Revista:
Rev. méd. Chile
Asunto de la revista:
MEDICINA
Año:
2005
Tipo del documento:
Article
/
Project document
País de afiliación:
Venezuela
Pais de publicación:
Chile