Avastin® (bevacizumab) is a tumor-starving (anti-angiogenic) therapy. Avastin is designed to block a protein called vascular endothelial growth factor, or VEGF. Normal cells make VEGF, but some cancer cells make too much VEGF. Blocking VEGF may prevent the growth of new blood vessels, including normal blood vessels and blood vessels that feed tumors.

Unlike chemotherapy that attacks the cancer cells, the purpose of Avastin is to block the blood supply that feeds the tumor. This can stop the tumor from growing.

Tumor before treatment

New blood vessels feed the tumor so it can grow and spread.

Enlarged tumor representing tumor before treatment

Tumor with Avastin and chemotherapy

Avastin helps prevent blood vessels from reaching the tumor; this could starve the tumor.

Smaller tumor starved by Avastin and chemotherapy
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How Avastin is designed to work

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Avastin is a tumor starving therapy. Read more about how it’s designed to work.

Avastin® (bevacizumab) Patient Resources

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