High serum vascular endothelial growth factor levels predict poor prognosis after radiofrequency ablation of hepatocellular carcinoma: importance of tumor biomarker in ablative therapies.

Abstract:

BACKGROUND:Radiofrequency ablation (RFA) is a recently developed treatment for hepatocellular carcinoma (HCC). Thus far, the prognostic impact of tumor biomarkers has not been evaluated in this treatment. High serum level of vascular endothelial growth factor (VEGF) has been shown to predict microscopic vascular invasion and metastasis in HCC. This study investigated the prognostic significance of pre-treatment serum VEGF level in patients with HCC undergoing RFA treatment. METHODS:Serum VEGF levels were measured using enzyme-linked immunosorbent assay in 120 patients with HCC undergoing RFA, and in 15 healthy controls. Serum VEGF levels were correlated with clinicopathological features of the HCC patients. The prognostic significance of serum VEGF levels was assessed by univariate and multivariate analyses. RESULTS:The median serum VEGF level in the HCC patients was 240 pg/mL (range 17-1162), significantly higher than that of healthy controls (p = .024). The serum VEGF levels were significantly correlated with platelet counts (r = .487, p < .001) but not other clinicopathological features. Patients with serum VEGF level > 240 pg/mL had worse overall and recurrence-free survival compared with those with serum VEGF level > 240 pg/mL (p = .005 and .002, respectively). By multivariate analysis, serum VEGF level was a significant prognostic factor of both overall and recurrence-free survival. CONCLUSIONS:High pre-treatment serum VEGF levels predict poor prognosis after RFA of HCC. This study highlights the importance of tumor biomarker as a prognostic predictor in ablative therapy for HCC, which has an intrinsic problem of unavailability of histopathological prognostic features.

journal_name

Ann Surg Oncol

authors

Poon RT,Lau C,Pang R,Ng KK,Yuen J,Fan ST

doi

10.1245/s10434-007-9366-z

subject

Has Abstract

pub_date

2007-06-01 00:00:00

pages

1835-45

issue

6

eissn

1068-9265

issn

1534-4681

journal_volume

14

pub_type

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