A systematic review including studies that have measured serum VEGF in ovarian cancer has shown that there is a statistically significant association between VEGF level and FIGO stage, degree of tumor differentiation, size of the tumor, residual disease after surgery, lymph node invasion and ascites, but also showed that there are numerous conflicting studies regarding the prognostic value of VEGF [27]. This evidence concerns the gene VEGFA and ovarian carcinoma.