4.5 Article

Prognostic Importance of Vascular Endothelial Growth Factor-A Expression and Vascular Endothelial Growth Factor Polymorphisms in Epithelial Ovarian Cancer

Journal

INTERNATIONAL JOURNAL OF GYNECOLOGICAL CANCER
Volume 19, Issue 4, Pages 578-584

Publisher

LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1111/IGC.0b013e3181a13168

Keywords

Ovarian cancer; VEGF polymorphisms; VEGF-A expression; Survival

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Introduction: Vascular endothelial growth factors (VEGFs) play a central role in angiogenesis and consequently, in various steps of ovarian carcinogenesis. Gene polymorphisms within the VEGF system have revealed a correlation with prognosis in some malignancies. The aim of the present study was to examine the possible importance of 2 VEGF polymorphisms and VEGF-A expression in ovarian cancer. Methods: We investigated 2 single nucleotide polymorphisms VEGF +405G/C and VEGF -460C/T by polymerase chain reaction and also analyzed VEGF-A expression by immunohistochemistry in 159 women with ovarian cancer. Results: Vascular endothelial growth factor-A expression revealed a significant correlation with survival in a Cox proportional hazards regression model (P = 0.012). Germline polymorphisms were not correlated with clinicopathological parameters such as stage, type, and histology. Heterozygous genotype in VEGF +405G/C predicted a better survival compared with homozygous genotypes (P = 0.034), and the heterozygous genotype in VEGF -460C/T pointed to the same direction. A multivariate analysis also indicated that heterozygosity of either of the 2 polymorphisms held independent prognostic significance (P = 0.01). Conclusions: Vascular endothelial growth factor polymorphisms +405G/C and VEGF expression seem to have independent prognostic importance.

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