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Τρίτη 3 Ιουλίου 2018

Polymorphisms in TWIST1 and ZEB1 Are Associated with Prognosis of Gastric Cancer Patients

Background/Aim: Epithelial–mesenchymal transition (EMT) program has been linked as a driver of metastatic dissemination by conferring migratory and invasive capacity to cancer cells. Gastric cancer (GC) patients with tumors expressing altered levels of EMT markers have low survival. This study aimed to assess if polymorphisms of CDH1, TWIST1, SNAIL2, ZEB1 and ZEB2 genes are associated with survival in GC patients. Patients and Methods: A total of 153 individuals with diagnosis of GC were recruited in Santiago, Chile. All patients were genotyped using Infinium Global Screening Array (GSA). Twenty Tag SNPs of the studied genes were retrieved. Results: Three SNPs were associated with survival: rs2526614 (TWIST1) (genotype CA + AA, adjusted HR=0.58, 95%CI=0.37-0.93), rs6953766 (TWIST1) (genotype GG, crude HR=2.02, 95%CI=1.06-3.82, adjusted HR=2.14, 95%CI=1.07-4.25), and rs431073 (ZEB1) (genotype AC + CC, crude HR=1.62, 95%CI=1.01-2.59, adjusted HR=1.96, 95%CI=1.18-3.25). Conclusion: To the best of our knowledge, this is the first study proposing a role of these SNPs in cancer prognosis. Their use as prognostic markers of GC survival warrants further investigation.



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