Angiogenesis Inhibitors: Targeted Therapy for Tumor Control

Q: Can angiogenesis inhibitors cure cancer?

No, these medications are not a cure. They are designed to slow the growth and spread of tumors, helping patients live longer and improving their quality of life.

Q: Are these drugs considered chemotherapy?

No, they are a type of targeted therapy. While chemotherapy kills rapidly dividing cells, angiogenesis inhibitors specifically target the blood vessel formation process.

Q: How long does treatment usually last?

Most patients continue the therapy as long as the cancer is being controlled and the side effects do not become life-threatening or unmanageable.

Q: What is VEGF?

VEGF stands for vascular endothelial growth factor. It is a protein that serves as the primary signal for the body to grow new blood vessels.

Q: Do angiogenesis inhibitors affect normal healing?

Yes, because they block blood vessel formation, they can slow down the body's natural ability to heal wounds or recover from other surgeries.

Q: Are there side effects for the eyes?

When used for eye diseases, these drugs are usually injected into the eye. Side effects are typically localized but can include temporary discomfort or increased eye pressure.

Q: Can I eat specific foods to stop tumor growth?

While some foods like red grapes and green tea contain natural inhibitors, they are not potent enough to replace prescribed medical treatments for cancer.

Q: What is a GI perforation?

A GI perforation is a rare but serious side effect where a hole forms in the wall of the stomach or intestines, requiring immediate medical attention.

Q: How do I know if the treatment is working?

Healthcare providers use regular imaging tests, such as CT or MRI scans, to monitor the size of the tumor and its blood supply.

Q: Is high blood pressure common during treatment?

Yes, hypertension is a frequent side effect. Patients often require blood pressure medication and regular monitoring while taking these inhibitors.

Dr. Baraa Alnahhal

Oct 8

6 min read

Updated: 3 days ago

Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026

Quick Answer

Angiogenesis inhibitors are drugs that disrupt the formation of new blood vessels, which tumors need in order to grow. They block the chemical signals, primarily VEGF, that trigger vessel sprouting. [1] They treat various advanced cancers and abnormal blood vessel growth in the eyes. [1] While not a cure, they slow tumor growth and are given as pills or IV infusions. [1]

What the research says

In advanced ovarian cancer, adding bevacizumab to chemotherapy delayed progression by about 4 months. In a double-blind phase 3 trial of 1,873 women with newly diagnosed advanced ovarian cancer, median progression-free survival was 14.1 months when bevacizumab was given with and after chemotherapy, versus 10.3 months with chemotherapy alone (hazard ratio 0.717; 95% CI 0.625 to 0.824; P<0.001). Overall survival did not differ significantly among the groups at the time of analysis. High blood pressure needing medical treatment was more common with bevacizumab (22.9% versus 7.2%) (PubMed: Burger et al., N Engl J Med, 2011 [2]).
Bevacizumab raised the risk of high blood pressure and protein in the urine, and the risk grew with the dose. A systematic review and meta-analysis of 7 randomized trials (1,850 patients) found the relative risk of hypertension was 3.0 with low-dose bevacizumab (95% CI 2.2 to 4.2) and 7.5 with high-dose bevacizumab (95% CI 4.2 to 13.4). The risk of proteinuria was also increased (relative risk 1.4 with low dose and 2.2 with high dose) (PubMed: Zhu et al., Am J Kidney Dis, 2007 [3]).

What are Angiogenesis Inhibitors?

Angiogenesis inhibitors are specialized medications designed to halt the growth of new blood vessels that "feed" cancerous tumors. The process of new blood vessel formation, known as angiogenesis, is a normal part of the body's healing mechanism, such as when damaged cells release signals to repair an injury. However, malignant tumors hijack this process to sprout their own network of capillaries once they reach approximately one to two millimeters in size. [1]

These drugs, also referred to as anti-angiogenic therapy, work by disrupting the communication between tumor cells and the vascular system. By preventing the formation of nutrient-rich blood pathways, these inhibitors can slow tumor expansion and, in some instances, cause existing tumors to shrink.

Tumor angiogenesis: a tumor sends out SOS signals that cause new capillaries to sprout from a nearby blood vessel – rinnit.com

How Anti-Angiogenics Function

Most angiogenesis inhibitors target a specific protein called vascular endothelial growth factor (VEGF). [1] This protein acts as the primary "SOS signal" that triggers the formation of new blood vessels. The medications disrupt this signaling through several distinct mechanisms.

Mechanism of Action	How It Works	Common Drug Examples
Receptor Binding Prevention	Binds to VEGF proteins so they cannot attach to cell receptors. [1]	Bevacizumab (Avastin)
Signal Transmission Blockage	Blocks receptors from sending the internal signal to form vessels. [1]	Sorafenib, Sunitinib
Signal Pathway Interference	Blocks other auxiliary signals involved in the angiogenesis process. [1]	Thalidomide, Lenalidomide

What conditions do angiogenesis inhibitors treat?

Healthcare providers primarily utilize angiogenesis inhibitors to manage advanced or recurrent cancers that have not responded sufficiently to other treatments. Because these drugs target the blood supply rather than the cancer cells themselves, they are often used as part of a multi-modal treatment plan.

Beyond oncology, these inhibitors are also used to treat specific eye diseases characterized by abnormal blood vessel growth, which can lead to vision loss. In these cases, the drugs are often referred to specifically as VEGF inhibitors. [1]

Cancers Managed with Anti-Angiogenics

Digestive System: Colon, liver, pancreatic, and stomach cancers. [1]
Reproductive System: Cervical, fallopian tube, and uterine (endometrial) cancers. [1]
Respiratory and Thoracic: Lung and thyroid cancers. [1]
Other Malignancies: Brain cancer, breast cancer, kidney cancer, lymphoma, and multiple myeloma. [1]

Two ways angiogenesis inhibitors are given: as an intravenous infusion or as a daily oral pill – rinnit.com

What is the treatment process with angiogenesis inhibitors?

Angiogenesis inhibitors are typically prescribed alongside other cancer treatments like chemotherapy or immunotherapy. While the anti-angiogenics starve the tumor of its blood supply, the other therapies work to kill the actual cancer cells. [1] The method of administration depends on the specific drug prescribed and the patient's overall health status.

Patients may be required to take a pill once or twice daily, or they may receive regular intravenous (IV) infusions at a clinical facility. [1] The duration of therapy is usually indefinite, continuing as long as the medication remains effective and the side effects are manageable for the patient. [1]

What are the risks and side effects of angiogenesis inhibitors?

Angiogenesis inhibitors carry significant risks, such as high blood pressure, blood clots, internal bleeding and slowed wound healing, because they can affect normal healing processes. [1] Many of the complications are related to the cardiovascular system and the body's ability to repair tissue.

Common side effects and risks include:

Cardiovascular Issues: High blood pressure and an increased risk of serious blood clots, which can lead to heart attacks or strokes. [1]
Healing Complications: Internal bleeding and significantly slowed wound healing after injuries or other surgeries. [1]
Organ Impact: Potential liver damage (toxic hepatitis), gastrointestinal perforation, or an underactive thyroid gland (hypothyroidism). [1]

Foods that contain natural angiogenesis inhibitors in the Mediterranean diet: green tea, red grapes, olive oil, and asparagus – rinnit.com

What role does nutrition play during angiogenesis inhibitor therapy?

Certain compounds found naturally in foods have been shown to block some of the signals involved in angiogenesis. Many of these foods are staples of the Mediterranean diet, including green tea, olive oil, red grapes, and asparagus. [1] While these natural compounds are being studied for the development of future drugs, it is critical to understand that they are not a substitute for medical cancer therapies. [1] Maintaining a nutrient-rich diet is essential for supporting the body during treatment, but it cannot replace the tumor-starving capabilities of pharmaceutical angiogenesis inhibitors.

Frequently Asked Questions

1. Can angiogenesis inhibitors cure cancer?

No, these medications are not a cure. They are designed to slow the growth and spread of tumors, helping patients live longer and improving their quality of life.

2. Are these drugs considered chemotherapy?

No, they are a type of targeted therapy. While chemotherapy kills rapidly dividing cells, angiogenesis inhibitors specifically target the blood vessel formation process.

3. How long does treatment usually last?