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The Scientific World Journal
Volume 2016, Article ID 7951365, 6 pages
http://dx.doi.org/10.1155/2016/7951365
Research Article

Evaluation of the Expression of the Human Epithelial Receptor 2 (HER2) in Gastric Carcinoma

Gastric and Obesity Surgery Division, Surgery Department, Santa Casa of São Paulo Medical School, São Paulo, SP, Brazil

Received 3 May 2016; Accepted 6 December 2016

Academic Editor: ChangHui Shen

Copyright © 2016 Roberto de Moraes Cordts Filho et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. To evaluate the HER2 expression on gastric adenocarcinoma from a Brazilian population and also to analyze the relations between the receptor and clinical characteristics, as well as the survival status. Materials and Methods. A retrospective analysis was conducted from January of 2008 to July of 2012, considering only gastrectomies with curative intent. Tumors were tested for HER2 status using immunohistochemistry. The relation between HER2 status and clinical aspects, surgical findings, and survival were also analyzed. Results. 222 patients with gastric carcinoma were submitted to surgery during that period, but only 121 (54,5%) were with curative intention. The immunohistochemistry revealed that 4 patients (3,3%) were HER2-positive, 6 patients (4,9%) HER2-undetermined, and 111 patients (91,7%) HER2-negative. There was no statistical concordance between HER2 status and survival or the clinical aspects. Conclusion. The HER2 overexpression rate was very low in this Brazilian population sample and cannot be considered as a prognostic factor.