Medicine. 94(31):e1306, AUG 2015

DOI: 10.1097/MD.0000000000001306

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PMID: 26252310

Issn Print: 0025-7974

Publication Date: 2015/08/01


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Association Between Expression of Cancer Stem Cell Markers and Poor Differentiation of Hepatocellular Carcinoma: A Meta-Analysis (PRISMA)

Rui Liu;Yuan Shen;Kejun Nan;Baibing Mi;Tao Wu;Jinyue Guo;Miaojing Li;Yi Lv;Hui Guo;

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Abstract

The role of cancer stem cell (CSC) markers in differentiation of hepatocellular carcinoma (HCC) remains uncertain. We conducted a meta-analysis to first investigate the association between expression of CSC markers (CD133, CD90, CD44, and EpCAM) and poor differentiation of HCC, and second, to determine if these CSC markers can be classified as biomarkers for patient classification and HCC differentiated therapy.The relevant literature was searched using PubMed, EMBASE, Elsevier, and Chinese Biological Medicine databases for association between CSC markers and HCC from January 1, 2000 to June 30, 2014. Data were synthesized using random-effect or fixed-effect models. The effect sizes were estimated by measuring odds ratios (OR) with 95% confidence interval (CI).The meta-analysis included 27 studies consisting of 2897 patients with HCC. The positive expression of CSC markers was associated with poor differentiation (OR = 2.37, 95% CI = 2.03–2.77, P < 0.00001). Similarly, the positive expression of CSC markers was only associated with HCC tissues compared with noncancerous liver tissues (OR = 9.26, 95% CI = 3.10–27.65, P < 0.0001). CD90 has a specificity of 91.9% for HCC and a sensitivity of 48.22% in predicting poor differentiation.The positive expression of CSC markers is associated with poor differentiation and aggressive phenotype of patients with HCC. The CD90 marker might be a promising target for patient with HCC classification and differentiation therapy.

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