HER2 Gene Amplification by Fluorescence In Situ Hybridization (FISH) Compared With Immunohistochemistry (IHC) in 122 Equivocal Gastric Cancer Cases

被引：10
|
作者：
Liu, Xiaoyan [1 ]
Wang, Xiaoling [1 ]
Wang, Bo [1 ]
Ren, Guoping [1 ]
Ding, Wei [1 ]
机构：
[1] Zhejiang Univ, Coll Med, Affiliated Hosp 1, Dept Pathol, 79 Qingchun Rd, Hangzhou 310003, Zhejiang, Peoples R China
来源：
APPLIED IMMUNOHISTOCHEMISTRY & MOLECULAR MORPHOLOGY | 2016年 / 24卷 / 07期
关键词：
gastric cancer; fluorescence in situ hybridization; HER2/neu; PROTEIN EXPRESSION; BREAST-CANCER; NEU ONCOGENE; RECEPTOR; ADENOCARCINOMA; VALIDATION; PROGNOSIS; CARCINOMA; PATTERNS;
D O I：
10.1097/PAI.0000000000000219
中图分类号：
R602 [外科病理学、解剖学]; R32 [人体形态学];
学科分类号：
100101 ;
摘要：
Objective: To determine the frequency of HER2/neu amplification and the relationship between HER2/neu expression and clinicopathologic features in gastric cancers scored immunohistochemistry (IHC) 2+. Methods: A total of 122 gastric cancer cases scored IHC 2+ were retrospectively analyzed for HER2 amplification by fluorescence in situ hybridization (FISH). The correlation between HER2/neu expression and clinicopathologic features was analyzed. Results: HER2/neu gene was amplified in 17 out of the 122 gastric cancer samples. The concordance rate between IHC and FISH was 13.9%. HER2/neu status was correlated with the age of patients (P<0.05). Polysomy of CEP17 was demonstrated in 46 cases, 11 of which (23.91%) were amplified for HER2/neu. Within the subgroups, a correlation between CEP17 polysomy and the depth of invasion was observed (P<0.05). Conclusions: The results highlight the necessity of FISH test for further categorization when gastric cancer cases are scored 2+ by IHC. The value of HER2/neu for a potential role as a negative prognostic factor in the equivocal gastric cancer cases is limited.
引用
收藏
页码：459 / 464
页数：6
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