Published in:
Open Access
01-12-2014 | Research article
High focal adhesion kinase expression in breast carcinoma is associated with lymphovascular invasion and triple-negative phenotype
Authors:
Vita M Golubovskaya, Lourdes Ylagan, Austin Miller, Melissa Hughes, Jason Wilson, David Wang, Elizabeth Brese, Wiam Bshara, Stephen Edge, Carl Morrison, William G Cance
Published in:
BMC Cancer
|
Issue 1/2014
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Abstract
Background
Focal adhesion Kinase (FAK) is a nonreceptor protein tyrosine kinase that is overexpressed in tumors and plays a significant role in tumor survival and metastasis. The purpose of the study is to perform correlation of FAK expression with patient prognostic factors using tissue microarrays (TMA) samples.
Methods
We analyzed FAK expression by immunohistochemical staining in 196 breast primary tumor samples from stage II-IV patients and in 117 metastatic tissues matched to the primary tumors using TMA that were stained with FAK monoclonal antibody.
Results
High FAK expression in primary tumors was associated with a younger age of patients (p = 0.033), lymphovascular invasion (p = 0.001) and with the triple-negative phenotype (p = 0.033). FAK expression in 117 metastatic tissues positively correlated with FAK expression in matched primary tumors by Spearman correlation analysis. In addition, a strong positive correlation was observed between high FAK expression and shorter overall survival and progression free survival in patients with metastatic tumors.
Conclusions
The data demonstrate a high potential for FAK as a therapeutic target, especially in triple-negative breast cancer patients with high FAK expression.