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.

However, in a study of mCRC patients who continued on Avastin for second-line treatment after a first-line treatment that included Avastin, tumors did not shrink.

Smaller tumor starved by Avastin and chemotherapy

In this video, Dr. Tsao, an oncologist, describes how Avastin is designed to work. Watch to see how Avastin may help starve your tumors.

Financial resources calculator

GET FINANCIAL SUPPORT

Questions about Avastin treatment costs? Let us help you understand your financial assistance options.

How Avastin is designed to work

SEE HOW AVASTIN IS DESIGNED TO WORK

Avastin is a tumor-starving therapy. Watch a quick video that explains how it’s designed to work.

Caregiver support

GET TIPS FOR CAREGIVERS

If you’re a caregiver, find out how you can help keep your friend or family member on track.