The Role of Antiangiogenetic Agents in the Treatment of Breast Cancer

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Abstract:

Angiogenesis is known to be essential for the development and progression of cancer. Vascular endothelial growth factor (VEGF) is a critical mediator in tumor angiogenesis for many solid malignancies, including breast cancer. Increased levels of VEGF have been associated with poor clinical outcomes, including reduced survival. VEGF has become an attractive target for cancer therapy in view of its pivotal role in angiogenesis. The primary approaches for inhibiting angiogenesis have focused on inhibiting the activity of VEGF, either by targeting the VEGF ligand itself with monoclonal antibodies (mAbs) or by interfering with the signaling events downstream of VEGF through the use of tyrosine kinase inhibitors (TKIs). Bevacizumab is a recombinant, humanized monoclonal IgG1, anti-VEGF antibody that has demonstrated significant clinical benefit in several solid tumors. Bevacizumab has been approved for use in combination with paclitaxel for the first line treatment of patients with metastatic breast cancer (MBC) based on the results of the randomized phase III E2100 trial in which it improves response rate and time to progress when administered with weekly paclitaxel until disease progression. Several trials to define the role of bevacizumab in different setting of disease and in combination with different chemotherapy regimens and targeted therapy in breast cancer patients are ongoing. Other small molecule inhibitors of VEGF tyrosine kinase activity (TKIs) such as sunitinib, vandetanib and sorafenib are being tested in MBC. This review will focus on bevacizumab and on the developements of the main antiangiogenic agents in the treatment of breast cancer.





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  • Current Medicinal Chemistry covers all the latest and outstanding developments in medicinal chemistry and rational drug design. Each issue contains a series of timely in-depth reviews written by leaders in the field covering a range of the current topics in medicinal chemistry. Current Medicinal Chemistry is an essential journal for every medicinal chemist who wishes to be kept informed and up-to-date with the latest and most important developments.
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