Overexpression of hERG1 in resected esophageal squamous cell carcinomas: a marker for poor prognosis.

Abstract:

BACKGROUND AND OBJECTIVES:The aim of this study was to evaluate the expression and prognostic roles of human ether à go-go related gene (hERG1) potassium channels in resected esophageal squamous cell carcinoma. METHODS:Expression of hERG1 protein and mRNA was detected by immunohistochemistry and reverse transcription PCR in resected esophageal squamous cell carcinomas (ESCCs) and non-cancerous matched tissues, and the correlation was examined between expression of hERG1 protein and clinicopathological factors and prognosis of ESCC patients. RESULTS:Frequency of positive expression of hERG1 protein was 77.9% (53/68), mRNA was 81.8% (9/11). hERG1 protein and mRNA were negatively expressed in all non-cancerous matched tissues. There was no significant correlation between hERG1 protein expression and lymph node metastases, depth of penetration, stage, and other clinicopathological factors. Completeness was 92.5% for hERG1-positive group and 92.0% for hERG1-negative group. ESCC patients with positive expression of hERG1 protein had a significantly shorter postoperative survival time than those with negative expression (median, 30 vs. 56 months). Survival rates at each time-point for hERG1-positive group were lower than that for hERG1-negative group, and hERG1 was identified as an independent prognostic factor of long-term survival by multivariate analysis. CONCLUSION:In ESCC, hERG1 was aberrantly expressed and correlated with poor prognosis after surgery.

journal_name

J Surg Oncol

authors

Ding XW,Luo HS,Luo B,Xu DQ,Gao S

doi

10.1002/jso.20891

subject

Has Abstract

pub_date

2008-01-01 00:00:00

pages

57-62

issue

1

eissn

0022-4790

issn

1096-9098

journal_volume

97

pub_type

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