Relationship between EGFR over-expression and clinicopathologic characteristics in squamous cell carcinoma of the esophagus: a meta-analysis

Asian Pac J Cancer Prev. 2014;15(14):5889-93. doi: 10.7314/apjcp.2014.15.14.5889.

Abstract

Over-expression of epidermal growth factor receptor (EGFR) has been identified as a common feature associated with clinical outcome in many types of cancer, including squamous cell carcinoma of the oesophagus (SCCO). However, the clinical importance of EGFR over-expression in SCCO remains unsettled as conflicting results exist. Therefore we carried out the present meta-analysis of published studies for clarification. A total of 13 studies including 1,150 patients were enrolled. EGFR over-expression was positive in 722 of these cases. With EGFR over-expression, patients had higher depth of invasion, vascular invasion, and poor prognosis. However, expression had no relation with degree of differentiation, histological grade, lymph node metastasis, clinical stage or lymphatic invasion. EGFR over-expression is probably a valuable predictor for the T stage, vascular invasion and OS, and it could be used as a poor prognosis indicator for the esophageal SCC patients. Targeting therapy to EFGR should be considered to the combined treatment in SCCO.

Publication types

  • Meta-Analysis

MeSH terms

  • Biomarkers, Tumor / biosynthesis*
  • Biomarkers, Tumor / genetics
  • Carcinoma, Squamous Cell / genetics
  • Carcinoma, Squamous Cell / pathology*
  • ErbB Receptors / biosynthesis*
  • ErbB Receptors / genetics
  • Esophageal Neoplasms / genetics
  • Esophageal Neoplasms / pathology*
  • Esophageal Squamous Cell Carcinoma
  • Esophagus / pathology
  • Humans
  • Lymphatic Metastasis / pathology
  • Neoplasm Grading
  • Neoplasm Invasiveness / genetics
  • Neoplasm Invasiveness / pathology*
  • Neoplasm Staging
  • Prognosis

Substances

  • Biomarkers, Tumor
  • EGFR protein, human
  • ErbB Receptors