Prognostic significance of NANOG expression in solid tumors: a meta-analysis

NANOG is a tumor marker and indicates poor prognosis in various neoplasms; however, the evidence is controversial. This meta-analysis investigated the association of NANOG expression and clinicopathological features, and it impact on survival of patients with malignant tumors. Studies published thro...

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Veröffentlicht in:OncoTargets and therapy 2018-01, Vol.11, p.5515-5526
Hauptverfasser: Zhao, Lingqiong, Liu, Jie, Chen, Shu, Fang, Chun, Zhang, Xianquan, Luo, Zhibin
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Liu, Jie
Chen, Shu
Fang, Chun
Zhang, Xianquan
Luo, Zhibin
description NANOG is a tumor marker and indicates poor prognosis in various neoplasms; however, the evidence is controversial. This meta-analysis investigated the association of NANOG expression and clinicopathological features, and it impact on survival of patients with malignant tumors. Studies published through May 31, 2018 were retrieved from PubMed, Web of Science, Embase, and the China National Knowledge Infrastructure. Two researchers independently screened the content and quality of studies and extracted data. Correlations of NANOG expression, clinicopathological variables, and survival were analyzed and the combined odds ratios (ORs) and hazard ratios (HRs) with 95% confidence intervals (95% CIs) were calculated. Thirty-three articles including 35 data sets of 3,959 patients were analyzed. Overall, elevated NANOG expression was associated with poor overall survival (HR = 2.19; 95% CI: 1.87-2.58,
doi_str_mv 10.2147/OTT.S169593
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This meta-analysis investigated the association of NANOG expression and clinicopathological features, and it impact on survival of patients with malignant tumors. Studies published through May 31, 2018 were retrieved from PubMed, Web of Science, Embase, and the China National Knowledge Infrastructure. Two researchers independently screened the content and quality of studies and extracted data. Correlations of NANOG expression, clinicopathological variables, and survival were analyzed and the combined odds ratios (ORs) and hazard ratios (HRs) with 95% confidence intervals (95% CIs) were calculated. Thirty-three articles including 35 data sets of 3,959 patients were analyzed. Overall, elevated NANOG expression was associated with poor overall survival (HR = 2.19; 95% CI: 1.87-2.58, &lt;0.001) and poor disease-free survival (HR = 2.21, 95% CI: 1.54-3.18, &lt;0.001). Subgroup analysis found that NANOG expression was associated with worse overall survival in non-small cell lung (HR = 1.87; 95% CI: 1.26-2.76, = 0.002), head and neck (HR = 2.29; 95% CI: 1.75-3.02, &lt;0.001), and digestive system (HR = 2.38; 95% CI: 1.95-2.91, &lt;0.001) cancers. Moreover, we found that high NANOG expression was associated with poor tumor differentiation (OR = 2.63; 95% CI: 1.59-4.55, = 0.001), lymph node metastasis (OR = 2.59; 95% CI: 1.50-4.47, = 0.001), advanced TNM stage (OR = 2.22; 95% CI: 1.42-3.45, &lt;0.001), and T stage (OR = 0.44; 95% CI: 0.20-0.93, = 0.031). The evidence supports NANOG as a tumor biomarker to guide clinical management and indicate prognosis. 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however, the evidence is controversial. This meta-analysis investigated the association of NANOG expression and clinicopathological features, and it impact on survival of patients with malignant tumors. Studies published through May 31, 2018 were retrieved from PubMed, Web of Science, Embase, and the China National Knowledge Infrastructure. Two researchers independently screened the content and quality of studies and extracted data. Correlations of NANOG expression, clinicopathological variables, and survival were analyzed and the combined odds ratios (ORs) and hazard ratios (HRs) with 95% confidence intervals (95% CIs) were calculated. Thirty-three articles including 35 data sets of 3,959 patients were analyzed. Overall, elevated NANOG expression was associated with poor overall survival (HR = 2.19; 95% CI: 1.87-2.58, &lt;0.001) and poor disease-free survival (HR = 2.21, 95% CI: 1.54-3.18, &lt;0.001). Subgroup analysis found that NANOG expression was associated with worse overall survival in non-small cell lung (HR = 1.87; 95% CI: 1.26-2.76, = 0.002), head and neck (HR = 2.29; 95% CI: 1.75-3.02, &lt;0.001), and digestive system (HR = 2.38; 95% CI: 1.95-2.91, &lt;0.001) cancers. Moreover, we found that high NANOG expression was associated with poor tumor differentiation (OR = 2.63; 95% CI: 1.59-4.55, = 0.001), lymph node metastasis (OR = 2.59; 95% CI: 1.50-4.47, = 0.001), advanced TNM stage (OR = 2.22; 95% CI: 1.42-3.45, &lt;0.001), and T stage (OR = 0.44; 95% CI: 0.20-0.93, = 0.031). The evidence supports NANOG as a tumor biomarker to guide clinical management and indicate prognosis. 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subjects Analysis
Anopheles
Breast cancer
Cancer
Cancer metastasis
Cancer research
Cervical cancer
Colorectal cancer
Esophagus
Gastric cancer
Infrastructure (Economics)
Liver cancer
Lung cancer
Lymphatic system
Medical prognosis
Medical research
Meta-analysis
Metastasis
Oncology
Ovarian cancer
Prognosis
Proteins
Quality
Review
Stem cells
Studies
Survival analysis
Transcription factors
Tumors
title Prognostic significance of NANOG expression in solid tumors: a meta-analysis
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