ROS1 Expression in Invasive Ductal Carcinoma of the Breast Related to Proliferation Activity
Yonsei Medical Journal
;
: 650-657, 2013.
Artigo
em Inglês
| WPRIM
| ID: wpr-193938
ABSTRACT
PURPOSE:
ROS1 is an oncogene, expressed primarily in glioblastomas of the brain that has been hypothesized to mediate the effects of early stage tumor progression. In addition, it was reported that ROS1 expression was observed in diverse cancer tissue or cell lines and ROS1 is associated with the development of several tumors. However, ROS1 expression has not been studied in breast cancer to date. Therefore, we investigated ROS1 expression at the protein and gene level to compare expression patterns and to verify the association with prognostic factors in invasive ductal carcinoma (IDC) of the breast. MATERIALS ANDMETHODS:
Tissue samples from 203 patients were used. Forty-six cases were available for fresh tissue. We performed immunohistochemical staining and real-time polymerase chain reaction (PCR).RESULTS:
ROS1 expression was significantly lower in proportion to higher histologic grade, higher mitotic counts, lower estrogen receptor expression, and a higher Ki-67 proliferation index, although ROS1 expression was not significantly associated with the survival rate. The result of real-time PCR revealed similar trends, however not statistically significant.CONCLUSION:
Higher ROS1 expression may be associated with favorable prognostic factors of IDC and its expression in IDC is related to the proliferation of tumor cells.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Prognóstico
/
Proteínas Tirosina Quinases
/
Neoplasias da Mama
/
Imuno-Histoquímica
/
Análise de Sobrevida
/
Proteínas Proto-Oncogênicas
/
Carcinoma Ductal de Mama
/
Proliferação de Células
/
Gradação de Tumores
Tipo de estudo:
Estudo prognóstico
Limite:
Adulto
/
Idoso
/
Aged80
/
Feminino
/
Humanos
Idioma:
Inglês
Revista:
Yonsei Medical Journal
Ano de publicação:
2013
Tipo de documento:
Artigo
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