The document discusses a clinical trial called GOG 218 that evaluated the use of the drug bevacizumab for the primary treatment of advanced epithelial ovarian cancer. The trial found that patients who received bevacizumab plus chemotherapy had a 3 month improvement in progression-free survival compared to those who received chemotherapy alone. Bevacizumab is the first molecular targeted therapy and anti-angiogenic agent to demonstrate a benefit in upfront treatment of ovarian cancer. While survival was not yet improved, the trial provides support for further research evaluating bevacizumab and other targeted agents to improve outcomes for ovarian cancer patients.