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SLITRK3 expression correlation to gastrointestinal stromal tumor risk rating and prognosis

World Journal of Gastroenterology 2015年第27期21卷 8398-8407页

作者： Chao-Jie Wang Zi-Zhen Zhang Jia Xu Ming Wang Wen-Yi Zhao Lin Tu Chun Zhuang Qiang Liu Yan-Yin Shen Hui Cao Zhi-Gang Zhang Department of Gastrointestinal Surgery Ren Ji Hospital School of Medicine Shanghai Jiao Tong University State Key Laboratory of Oncogenes and Related Genes Shanghai Cancer Institute Ren Ji Hospital School of Medicine Shanghai Jiao Tong University Department of Pathology Ren Ji Hospital School of Medicine Shanghai Jiao Tong University

AIM: To assess the influence of SLIT and NTRKlike family member 3(SLITRK3) on the prognosis of gastrointestinal stromal tumor(GIST) and determine whether SLITRK3 can help improve current risk stratification ***: We hypothesized that SLITRK3 could be used as a prognostic molecular biomarker for GIST. 35 fresh tumor samples and 417 paraffin-embedded specimens from GIST patients were utilized. SLITRK3m RNA expression in GIST tumor tissue was detected by real-time polymerase chain reaction, and SLITRK3 protein levels were estimated by immunohistochemistry. The correlation of SLITRK3 expression with various tumor clinicopathological characteristics and follow-up data were ***: GIST tumors had high expression of SLITRK3 compared with adjacent normal tissues and the expression level gradually increased with risk grade. SLITRK3 protein expression was closely associated with gastrointestinal bleeding, tumor site, tumor size, mitotic index, and National Institutes of Health(NIH) classification. Survival analysis showed that SLITRK3 expression was closely correlated with overall survival and disease-free survival of GIST patients. Multivariate analysis also identified SLITRK3 expression, mitotic index, and NIH stage as significant risk factors of GIST ***: SLITRK3 expression is a highly significant predictor of GIST recurrence and metastasis. Combinations of SLITRK3 and NIH stage have strong predictive and prognostic value, and are feasible markers for clinical practice in gastrointestinal stromal tumor.

关键词： SLITRK3 Gastrointestinal stromal tumor Biomarkers non-epithelial tumors Risk stratification

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