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Decreased expression of stomatin predicts poor prognosis in HER2-positive breast cancer.

BMC cancer (2016-09-01)
Chin-Yau Chen, Chih-Yung Yang, Yen-Chung Chen, Chia-Wen Shih, Su-Shun Lo, Chi-Hung Lin
ABSTRACT

Human epidermal growth factor receptor-2 (HER2) is a transmembrane tyrosine kinase receptor that is overexpressed in 25 to 30 % of human breast cancers and is preferentially localized in lipid rafts. Stomatin is a membrane protein that is absent from the erythrocyte plasma membrane in patients with congenital stomatocytosis and is the major component of the lipid raft. In a total of 68 clinical cases of HER2-positive breast cancer, the absence of stomatin expression was associated with a decreased 5-year survival (65 % vs. 93 %, p = 0.005) by survival analysis. For stage I-III HER2-positive breast cancer, the absence of stomatin expression was associated with a decreased 5-year disease-free survival (57 % vs. 81 %, p = 0.016) and was an independent prognostic factor by multivariate analysis. Negative stomatin expression predicts distant metastases in a hazard ratio of 4.0 (95 % confidence interval from 1.3 to 12.5). These results may suggest that stomatin is a new prognostic indicator for HER2-positive breast cancer.

MATERIALS
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Brand
Product Description

Sigma-Aldrich
Anti-STOM antibody produced in rabbit, Ab2, Prestige Antibodies® Powered by Atlas Antibodies, affinity isolated antibody, buffered aqueous glycerol solution

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