Angiogenesis as a target for the treatment of ovarian cancer.

Abstract

PURPOSE OF REVIEW:

Angiogenesis has been validated as a target in ovarian cancer through four randomized trials that have reported improved progression-free survival (PFS) in patients with ovarian cancer whose conventional treatment was supplemented with concurrent and maintenance administration of the antivascular endothelial growth factor (VEGF) antibody, bevacizumab. These trials [the International Collaborative Ovarian Neoplasm Group trial (ICON7), the Gynecologic Oncology Group trial (GOG218), OCEANS and AURELIA] have shown that the tumour vasculature is a valid target throughout the lifetime of patients with ovarian cancer. This review seeks to address some of the remaining questions surrounding the optimal strategy for the use of bevacizumab in ovarian cancer.

RECENT FINDINGS:

The first-line trials, ICON7 and GOG218, showed improvements in PFS and in the case of ICON7, an early analysis reported increased overall survival in a predefined group of patients at high risk of disease progression. Trials in recurrent disease, OCEANS and AURELIA, also showed improvements in PFS, raising questions about whether VEGF-inhibiting agents should be confined to first-line therapy, second-line therapy or both.

SUMMARY:

Both the first-line trials stopped maintenance bevacizumab after 12 and 15 months, respectively; yet, current data suggest that maintenance therapy should continue at least until progression. In addition, current research is focussing on the identification of predictive biomarkers for VEGF inhibitors and candidates have been identified. Thus, the true clinical benefit from VEGF pathway inhibitors in the first-line treatment of ovarian cancer is likely to increase over the next few years.

• Authors: Danielle Shaw, Andrew Clamp, Gordon C Jayson
• Journal: Current opinion in oncology (Curr Opin Oncol) Vol. 25 Issue 5 Pg. 558-65 (Sep 2013) ISSN: 1531-703X [Electronic] United States
• PMID: 23942301 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Review)

Chemical References

• Angiogenesis Inhibitors
• Antibodies, Monoclonal, Humanized
• Antineoplastic Agents
• Vascular Endothelial Growth Factor A
• Bevacizumab

Topics

• Angiogenesis Inhibitors (therapeutic use)
• Antibodies, Monoclonal, Humanized (therapeutic use)
• Antineoplastic Agents (therapeutic use)
• Bevacizumab
• Female
• Humans
• Maintenance Chemotherapy
• Neovascularization, Pathologic (drug therapy)
• Ovarian Neoplasms (blood supply, drug therapy)
• Randomized Controlled Trials as Topic
• Vascular Endothelial Growth Factor A (antagonists & inhibitors)