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  • Title: Circulating microRNAs as biomarkers for diagnosis of early hepatocellular carcinoma associated with hepatitis B virus.
    Author: Hung CH, Hu TH, Lu SN, Kuo FY, Chen CH, Wang JH, Huang CM, Lee CM, Lin CY, Yen YH, Chiu YC.
    Journal: Int J Cancer; 2016 Feb 01; 138(3):714-20. PubMed ID: 26264553.
    Abstract:
    Hepatocarcinogenesis is a multistep process that evolves from cirrhosis or dysplastic nodule (DN), and eventually leads to overt hepatocellular carcinoma (HCC). Differentiation between early HCC and DN is an important issue in the clinical setting. This study aims to investigate the potential of circulating microRNA (miRNA) levels in the diagnosis of early HCC. RNA was extracted from sera of 30 chronic hepatitis B patients with pathologically proven DN and 120 age- and sex-matched patients with early HCC. Paired samples were collected from ten patients with DN who developed overt HCC in the follow-up. A panel of ten cancer-associated miRNAs was analyzed by quantitative real-time reverse-transcription polymerase chain reaction. Serum levels of miR-16, miR-122, miR-221, let-7b and miR-15b were significantly lower in patients with DN than in the HCC group. When DN progressed to overt HCC, serum miR-122, miR-let-7b and miR-15b levels increased significantly (p = 0.046, 0.043 and 0.044, respectively). As a single marker, α-fetoprotein (AFP) and miR-122 as well as let-7b had the similar performance for differentiate HCC from DN. As limited to subjects with normal AFP, let-7b resulted in a sensitivity of 84.8% and a specificity of 50% in separating HCC and DN with a cutoff value of 3.5 (p = 0.001). In conclusion, miR-122 and let-7b, which are upregulated in the serum of early-HCC patients, can be useful markers for differentiating early HCC from DN in chronic hepatitis B patients.
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