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Klotho-beta and fibroblast growth factor 19 expression correlates with early recurrence of resectable hepatocellular carcinoma.
Liver International : Official Journal of the International Association for the Study of the Liver 2019 January 31
BACKGROUND AND AIMS: Fibroblast growth factor 19 (FGF19) and fibroblast growth factor receptor 4 (FGFR4) signaling play critical roles in hepatocarcinogenesis. This study explored the potential of FGF19 and FGFR4 related biomarkers in predicting early tumor recurrence (ETR) and survival in patients with resectable hepatocellular carcinoma (HCC).
METHODS: We examined the mRNA expressions of FGF19, FGFR4, klotho-beta (KLB), cyclin D1 (CCND1), and FGF4 in 151 surgically resected, primary unifocal HCCs through quantitative real-time polymerase chain reaction. Generalized additive models were fitted to detect nonlinear effects of continuous covariates and define thresholds of biomarker expressions. Univariate and multivariate analyses were performed to evaluate prognostic values of these biomarkers for tumor recurrence and patient survival.
RESULTS: Overexpression of FGF19, FGFR4, KLB, CCND1, and FGF4 mRNA was detected in 40%, 32%, 26%, 15%, and 35% of 151 tumors, respectively. ETR was the strongest prognostic factor predicting worse overall survival (hazard ratio [HR], 5.678; 95% confidence interval, 3.7-8.713; P < 0.001). Furthermore, we revealed that mRNA expression levels of KLB (HR, 3.857; P = 0.021) and FGF19 (HR, 3.248; P = 0.017) were significantly associated with the occurrence of ETR.
CONCLUSIONS: Frequent overexpression of FGF19/FGFR4-related biomarkers was detected in resectable HCC. Expression levels of KLB and FGF19 may determine patient survival outcomes through their effects on ETR. This article is protected by copyright. All rights reserved.
METHODS: We examined the mRNA expressions of FGF19, FGFR4, klotho-beta (KLB), cyclin D1 (CCND1), and FGF4 in 151 surgically resected, primary unifocal HCCs through quantitative real-time polymerase chain reaction. Generalized additive models were fitted to detect nonlinear effects of continuous covariates and define thresholds of biomarker expressions. Univariate and multivariate analyses were performed to evaluate prognostic values of these biomarkers for tumor recurrence and patient survival.
RESULTS: Overexpression of FGF19, FGFR4, KLB, CCND1, and FGF4 mRNA was detected in 40%, 32%, 26%, 15%, and 35% of 151 tumors, respectively. ETR was the strongest prognostic factor predicting worse overall survival (hazard ratio [HR], 5.678; 95% confidence interval, 3.7-8.713; P < 0.001). Furthermore, we revealed that mRNA expression levels of KLB (HR, 3.857; P = 0.021) and FGF19 (HR, 3.248; P = 0.017) were significantly associated with the occurrence of ETR.
CONCLUSIONS: Frequent overexpression of FGF19/FGFR4-related biomarkers was detected in resectable HCC. Expression levels of KLB and FGF19 may determine patient survival outcomes through their effects on ETR. This article is protected by copyright. All rights reserved.
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