Journal
ONCOTARGET
Volume 7, Issue 5, Pages 6136-6145Publisher
IMPACT JOURNALS LLC
DOI: 10.18632/oncotarget.6733
Keywords
Trop2; prognosis; gastric cancer
Categories
Funding
- National Natural Science Foundation of China [81201596]
- Special Fund of Clinical Medicine in Jiangsu Province [2013038]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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The cell surface protein Trop2 is overexpressed in a variety of human cancers. Trop2 expression increases tumor development and metastasis and reduces patient survival. However, little is known about the role of Trop2 expression and its prognostic value in gastric cancer (GC), particularly in Chinese populations. We analyzed Trop2 expression in GC tissues collected from Chinese GC patients. Quantitative real-time polymerase chain reaction (qRT-PCR) and immunohistochemistry on tissue microarrays were performed to assess levels of Trop2 mRNA and protein in GC, and correlations between Trop2 expression and clinical characteristics and prognosis were analyzed. Trop2 expression was higher in GC tissues than in neighboring non-tumor tissues. Increased Trop2 protein levels in GC were associated with increased differentiation, tumor node metastasis stage, tumor size, lymph node metastasis, distant metastasis, and H. pylori infection. GC patients with high Trop2 expression also had poor overall survival rates. These data suggest Trop2 is a useful prognostic biomarker for GC.
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