Abstract
Objective To investigate human epidermalgrowth factor receptor-2 (HER2)/neu gene amplification and protein expression in esophageal squamous cell carcinoma (ESCC) and to explore their clinicopathological correlations.Methods The HER2/neu gene status and protein expression in 120 cases of ESCC were evaluated by using fluorescence in situ hybridization (FISH) and immunohistochemistry (IHC).Results HER2/neu gene amplification and HER2 protein overexpression (+++) were found in 5 (4.17％) and 4 (3.33％) cases of ESCC respectively.HER2 overexpression was associated significantly with HER2/neu gene amplification.There was no correlation between the HER2/neu gene amplification or overexpression of HER2 protein and the ESCC patients' clinicopathological features.Conclusion The HER2/neu gene amplification rate and its protein overexpression rate in ESCC were low,and the role HER2/neu gene plays in ESCC still need further studies. Key words: Esophageal squamous cell carcinoma; Human epidermalgrowth factor receptor-2/neu gene; Immunohistochemistry
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