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HOME > J Pathol Transl Med > Volume 41(3); 2007 > Article
Original Article Prognostic Significance of Thymosin- 4 in Gastric Adenocarcinoma Patients.
Lucia Kim, Ye Ji Kim, Suk Jin Choi, In Suh Park, Jee Young Han, Young Chae Chu, Joon Mee Kim
Journal of Pathology and Translational Medicine 2007;41(3):176-182
DOI: https://doi.org/
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Department of Pathology, Inha University College of Medicine, Incheon, Korea. jmkpath@inha.ac.kr

Background
: Thymosin- 4 is an actin-sequestering protein that regulates actin polymerization. It is known to be associated with cell migration, angiogenesis and wound healing, as well as with tumor metastasis.
Methods
: We immunohistochemically evaluated the thymosin- 4 expression in gastric adenocarcinoma specimens, the relationship between this protein and the pathologic features and other tumor-related proteins, and its influence on the patient outcome.
Results
: We demonstrated that 40 specimens (26.3%) of 152 gastric adenocarcinomas showed positivity for thymosin- 4. The thymosin- 4 expression was statistically associated with advanced tumor stage (p=0.010), the nodal stage (p=0.029), the TNM stage (p=0.008), and the presence of lymphovascular invasion (p=0.009). The thymosin- 4 protein expression was closely related to the positivity for VEGF (p=0.000), c-Myc (p=0.007), and cyclin D1 (p=0.005), but it was not associated with the E-cadherin (p=0.861) or -catenin (p=0.640) expressions. The median survival and disease relapse time of patients showing thymosin-4 immunoreactivity were statistically shorter than those of patients without expression. Multivariate analysis showed that the tumor stage (p=0.003), nodal stage (p=0.005), thymosin- 4 expression (p=0.019) and Lauren's classification (p=0.037) were statistically important prognostic factors for gastric adenocarcinomas.
Conclusions
: The thymosin- 4 expression might be associated with disease progression of gastric adenocarcinomas and it should be regarded as an important prognostic factor for estimating patient survival.


JPTM : Journal of Pathology and Translational Medicine