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Prognostic significance of β1,6-N-acetylglucosaminyltransferase V expression in patients with hepatocellular carcinoma



Prognostic significance of β1,6-N-acetylglucosaminyltransferase V expression in patients with hepatocellular carcinoma



Japanese Journal of Clinical Oncology 45(9): 844-853



Alterations to the N-glycans in glycoproteins have been suggested to play important roles in the proliferation, differentiation, invasion and metastasis of hepatocellular carcinoma (HCC). This study aims to evaluate the potential prognostic value of β1,6-N-acetylglucosaminyltransferase V (Mgat5) in hepatocellular carcinoma patients after surgical resection. We retrospectively enrolled 300 patients (156 in the training cohort and 144 in the validation cohort) with hepatocellular carcinoma undergoing hepatectomy at a single institution. Mgat5 intensities were assessed by immunohistochemistry in the specimens of patients. The Kaplan-Meier method was applied to compare survival curves. Cox regression models were used to analyze the impact of prognostic factors on overall survival and recurrence-free survival. The concordance index was calculated to assess predictive accuracy. Intratumoral Mgat5 expression was significantly higher than non-tumoral tissues (P < 0.001). In both cohorts, elevated Mgat5 expression in tumor tissues positively correlated with vascular invasion and advanced tumor-node-metastasis stage. High Mgat5 expression indicated poor survival (P < 0.001 in the training cohort and P < 0.001 in the validation cohort) and recurrence (P < 0.001 in both cohorts, respectively) in patients with hepatocellular carcinoma, particularly with early-stage disease. Mgat5 expression was identified as an independent adverse prognostic factor for survival and recurrence. The predictive accuracy of tumor-node-metastasis and Barcelona Clinic Liver Cancer prognostic models was improved when Mgat5 expression was added. Mgat5 expression is a potential independent adverse prognostic biomarker for recurrence and survival of patients with hepatocellular carcinoma after hepatectomy.

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Accession: 058637404

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PMID: 26056329

DOI: 10.1093/jjco/hyv080


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