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Epidemiologic Study of Human Epidermal Growth Factor Receptor 2 Expression in Advanced/Metastatic Gastric Cancer: an Assessment of Human Epidermal Growth Factor Receptor 2 Status in Tumor Tissue Samples of Gastric and Gastro-Esophageal Junction Cancer

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Author(s)
Kyung Won SeoTaeyong JeonSewon KimSung Soo KimKwanghee KimByoung-Jo SuhSunhwi HwangSeongHee ChoiJae Seok MinYoung-Joon LeeYe Seob JeeHyeondong ChaeDoo Hyun YangSang Ho LeeSeungwan Ryu
Keimyung Author(s)
Ryu, Seung Wan
Department
Dept. of Surgery (외과학)
Journal Title
Journal of Gastric Cancer
Issued Date
2017
Volume
17
Issue
1
Keyword
ImmunohistochemistryIn situ hybridizationIncidenceReceptorErbB-2Stomach neopla는
Abstract
PURPOSE:

The Trastuzumab for gastric cancer (GC) trial identified human epidermal growth factor receptor 2 (HER2) as a predictor of successful treatment with trastuzumab (HER2 receptor targeting agent) among patients with advanced/metastatic GC. To date, the prevalence of HER2 overexpression in the Korean population is unknown. The present study aimed to assess the incidence of HER2 positivity among GC and gastroesophageal (GE) junction cancer samples and the relationship between HER2 overexpression and clinicopathological characteristics in Korean patients.

MATERIALS AND METHODS:

Tumor samples collected from 1,695 patients with histologically proven GC or GE junction enrolled at 14 different hospitals in Korea were examined. After gathering clinicopathological data of all patients, HER2 status was assessed by immunohistochemistry (IHC) at each hospital, and IHC 2+ cases were subjected to silver-enhanced in situ hybridization at 3 central laboratories.

RESULTS:

A total of 182 specimens tested positive for HER2, whereas 1,505 tested negative. Therefore, the overall HER2-positive rate in this study was 10.8% (95% confidence interval=9.3%-12.3%). The HER2-positive rate was higher among intestinal-type cases (17.6%) than among other types, and was higher among patients older than 70 years and 50 years of age, compared to other age groups.

CONCLUSIONS:

Our evaluation of the HER2 positivity rate (10.8%) among Korean patients with GC and GE junction indicated the necessity of epidemiological data when conducting studies related to HER2 expression in GC and GE junction.
Keimyung Author(s)(Kor)
류승완
Publisher
School of Medicine (의과대학)
Citation
Kyung Won Seo et al. (2017). Epidemiologic Study of Human Epidermal Growth Factor Receptor 2 Expression in Advanced/Metastatic Gastric Cancer: an Assessment of Human Epidermal Growth Factor Receptor 2 Status in Tumor Tissue Samples of Gastric and Gastro-Esophageal Junction Cancer. Journal of Gastric Cancer, 17(1), 52–62. doi: 10.5230/jgc.2017.17.e6
Type
Article
ISSN
2093-582X
DOI
10.5230/jgc.2017.17.e6
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/41238
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Surgery (외과학)
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