AI Article Synopsis
- HER2 expression and amplification are present in gastric carcinoma (GC), but their impact on prognosis is unclear; TACC1, a gene regulated by HER2, might play a role in GC development.
- Researchers assessed HER2 and TACC1 expression in 129 GC patients using immunohistochemistry and FISH, finding a strong correlation between HER2 expression and amplification, with a notable percentage of patients showing HER2 positivity.
- TACC1 expression was associated with important clinical factors like TNM stage and lymph node metastasis, suggesting that TACC1, along with HER2, could serve as independent prognostic indicators in GC.
Article Abstract
HER2 amplification and/or expression occurs in gastric carcinoma (GC), but the role of HER2 in the prognosis of GC remains unclear. The dysregulation of transforming acidic coiled coil 1 (TACC1), a downstream gene of HER2, is thought to be involved in the development of GC. The aim of this study was to investigate the role and relationship of HER2 and TACC1 in GC. The expression of HER2 and TACC1 was analyzed using immunohistochemistry on 129 primary resected GC patients, and HER2 amplification was additionally determined by FISH. The data on clinicopathological features and relevant prognostic factors in these patients were analyzed. The expression (3+, 2+ and 1+) and the amplification of HER2 was observed in 57 cases (44.2 %) and 25 cases (19.4 %), respectively, and the correlation between HER2 expression and amplification was strong (p < 0.001). According to the FDA criteria, 24 cases (18.6 %) would have been considered as HER2 positive. A total 62 (48.1 %) GC tissues showed positive cytoplasmic staining of TACC1. There was a significant and positive association between TACC1 and HER2. HER2 positive was significantly associated with TNM stage (p = 0.019), and TACC1 expression was significantly associated with lymph node metastasis (p = 0.004) and TNM stage (p = 0.004). TNM stage, TACC1 expression and co-positive of both HER2 and TACC1 were independent prognostic factors. TACC1 expression is an independent prognostic indicator of GC. The correlation between TACC1 expression and HER2-positive status indicated a possible synergistic regulation of the two molecules and co-positive of both HER2 and TACC1 maybe a more valuable prognostic marker.
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| http://dx.doi.org/10.1007/s12032-014-0280-5 | DOI Listing |
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