Abstract
The prognostic value of circulating tumor cells (CTC) detected in hepatocellular carcinoma (HCC) patients is currently under debate. We conducted a meta-analysis of available studies to assess its prognostic value for patients diagnosed with HCC. Medline, Ovid Database, Embase, The Science Citation Index, and Cochrane library, search was conducted on all studies reporting the outcomes of interest. The studies were set up according to the inclusion/exclusion criteria. Using a random-effects model, meta-analysis was performed using hazard ratio (HR), risk ratio (RR) and their 95% confidence intervals (95% CIs) as effect measures. Heterogeneity of the studies was tested for each pooled analysis. Subgroup and sensitivity analyses were also performed. twenty-three published studies that matched the selection criteria were included in this meta-analysis. CTC positivity was significantly associated with Relapse free survival (RFS) (HR 3.03, 95% CI: [1.89-4.86]; p<0.00001) and Overall survival (OS) (HR 2.45, 95% CI: [1.73-3.48]; p<0.00001). CTC positivity were also significantly associated with TNM Stage (RR 1.30, 95% CI: [1.02-1.65]; p=0.03), Tumor size (RR 1.36, 95% CI: [1.09-1.69]; p=0.006), Vascular invasion (RR 1.99, 95% CI: [1.43...Continue Reading
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