High Gpx1 expression predicts poor survival in laryngeal squamous cell carcinoma

Publication date: Available online 20 June 2017
Source:Auris Nasus Larynx
Author(s): Qicheng Zhang, Hongli Xu, Yiwen You, Jie Zhang, Renjie Chen
ObjectiveSeveral studies have demonstrated that abnormal glutathione peroxidases 1 (Gpx1) expression can influence the biological behavior of malignant cells. However, the roles of Gpx1 in laryngeal squamous cell carcinoma (LSCC) remain unknown. The purpose of this study is to analyze the Gpx1 expression and prognostic significance in LSCC patients.MethodsGpx1 mRNA levels in laryngeal tissues were determined by qRT-PCR. Meanwhile, We examined the expression levels of Gpx1 protein in 140 primary tumor tissues and 28 cases of normal tissues by immunohistochemistry (IHC) analysis on tissue microarrays (TMA).ResultsOur results revealed that the frequency of high Gpx1 was significantly higher in cancer tissue compared to normal surgical margins; Gpx1 expression correlated with clinical features and overall survival (OS). Gpx1 overexpression was significantly associated with lymph node metastasis (P=0.023) and TNM stage (P=0.008); Kaplan–Meier survival curves revealed that patients with high Gpx1 expression had worse prognoses than patients with low Gpx1 expression; By multivariate analysis, we revealed that high Gpx1 expression level (HR 2.101, 95%CI 1.011–4.367; P=0.047) was an independent prognostic factor of survival in LSCC patients.ConclusionWe speculate that Gpx1 can be applied to predict the prognosis in LSCC patients.



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