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01.06.2007 | Hepatic and Pancreatic Tumors

High Serum Vascular Endothelial Growth Factor Levels Predict Poor Prognosis after Radiofrequency Ablation of Hepatocellular Carcinoma: Importance of Tumor Biomarker in Ablative Therapies

verfasst von: Ronnie T. P. Poon, MS, PhD, Cecilia Lau, MPhil, Roberta Pang, PhD, Kelvin K. Ng, PhD, Jimmy Yuen, MBBS, Sheung Tat Fan, MS, MD, PhD, DSc

Erschienen in: Annals of Surgical Oncology | Ausgabe 6/2007

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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.

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Titel: High Serum Vascular Endothelial Growth Factor Levels Predict Poor Prognosis after Radiofrequency Ablation of Hepatocellular Carcinoma: Importance of Tumor Biomarker in Ablative Therapies
verfasst von: Ronnie T. P. Poon, MS, PhD
Cecilia Lau, MPhil
Roberta Pang, PhD
Kelvin K. Ng, PhD
Jimmy Yuen, MBBS
Sheung Tat Fan, MS, MD, PhD, DSc
Publikationsdatum: 01.06.2007
Verlag: Springer-Verlag
Erschienen in: Annals of Surgical Oncology / Ausgabe 6/2007
Print ISSN: 1068-9265
Elektronische ISSN: 1534-4681
DOI: https://doi.org/10.1245/s10434-007-9366-z

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High Serum Vascular Endothelial Growth Factor Levels Predict Poor Prognosis after Radiofrequency Ablation of Hepatocellular Carcinoma: Importance of Tumor Biomarker in Ablative Therapies