Assessment and prognostic analysis of EGFR, HER2, and HER3 protein expression in surgically resected gastric adenocarcinomas.

Abstract:

AIM:To investigate the significance of epidermal growth factor receptor (EGFR), human epidermal growth factor receptor (HER)2, and HER3 expression on survival outcomes in Chinese gastric cancer patients. MATERIALS AND METHODS:Formalin-fixed, paraffin-embedded specimens from 121 patients who underwent gastrectomy at Shanghai Renji Hospital from 2007-2010 were retrospectively examined. Fluorescence in situ hybridization and immunohistochemistry techniques were used to identify gene amplification and protein overexpression. Correlations between the expression or amplification of HER family genes and clinicopathological parameters were then determined using statistical analysis. RESULTS:EGFR protein overexpression, an increase in HER2 copy number and gene amplification, and HER3 protein overexpression were identified in 33.1%, 17.4%, and 62.0% of samples, respectively. Statistical analysis showed a significant association between EGFR expression and tumor invasion depth or tumor stage. HER2 was also shown to be significantly associated with the tumor grade. In addition, EGFR protein overexpression was found to be significantly associated with worse overall survival (P=0.03). CONCLUSION:The HER family members showed a high expression in gastric cancer. EGFR protein expression was associated with overall survival.

journal_name

Onco Targets Ther

journal_title

OncoTargets and therapy

authors

Tang D,Liu CY,Shen D,Fan S,Su X,Ye P,Gavine PR,Yin X

doi

10.2147/OTT.S70922

subject

Has Abstract

pub_date

2014-12-16 00:00:00

pages

7-14

issn

1178-6930

pii

ott-8-007

journal_volume

8

pub_type

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