CLINICAL TRIAL
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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High serum levels of vascular endothelial growth factor predict poor response to transarterial chemoembolization in hepatocellular carcinoma: a prospective study.

Vascular endothelial growth factor (VEGF) is an important mediator of tumor angiogenesis. A high serum VEGF level has been shown to predict poor response to chemotherapy and poor survival in several cancers, but its prognostic value in hepatocellular carcinoma (HCC) remains unknown. We conducted a prospective study to evaluate the prognostic significance of pretreatment serum VEGF levels on tumor response to treatment and survival of patients with HCC undergoing transarterial chemoembolization (TACE). Pretreatment serum VEGF levels were measured by an enzyme-linked immunosorbent assay in 80 patients with inoperable HCC undergoing TACE. Serum VEGF levels were correlated with clinical data, tumor response to TACE and survival results. The median serum VEGF level was 240 pg/ml (range 9-1730). Serum VEGF levels were positively correlated with the presence of venous tumor thrombus (P=0.011). Pretreatment serum VEGF levels were significantly higher in patients with progressive disease (median 434 pg/ml) than those with stable (median 176 pg/ml, P=0.010) or responsive disease (median 142 pg/ml, P<0.001) after TACE. Patients with serum VEGF >240 pg/ml had significantly worse survival than those with serum VEGF <240 pg/ml (median survival 6.8 vs. 19.2 months, P=0.007). In a Cox multivariate analysis, serum VEGF >240 pg/ml was an independent prognostic factor of survival. In conclusion, the results of this study suggest that serum VEGF level may be useful as a novel prognostic predictor of tumor response and survival of patients with inoperable HCC undergoing TACE treatment.

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