Treatment FAQ

why is avastin not used as first line treatment for gbm

by Dr. Zelda Steuber Published 2 years ago Updated 2 years ago

The CED recommended that bevacizumab (Avastin®), as a single-agent therapy, not be funded for the treatment of recurrent glioblastoma multiforme (GBM), on the basis that this treatment has not been proven to prolong survival, improve quality of life, or provide value for money. Executive Officer Decision

Avastin Doesn't Improve Survival in Newly Diagnosed Glioblastoma. In a Phase III clinical trial among patients with newly diagnosed glioblastoma, the addition of Avastin® (bevacizumab) to standard chemoradiation increased side effects and did not improve overall survival.Jul 12, 2018

Full Answer

How does Avastin treat glioblastoma (GBM)?

Avastin ® (bevacizumab) is approved to treat glioblastoma (GBM) in adult patients whose cancer has progressed after prior treatment (recurrent or rGBM). In a clinical study, when people with recurrent glioblastoma took Avastin with chemotherapy (lomustine) instead of chemotherapy alone: Tumor response is based on MRI and corticosteroid use.

What should I know about Avastin before taking it?

Avastin should not be used for at least 28 days before or after surgery and until surgical wounds are fully healed Serious bleeding.  This includes vomiting or coughing up blood; bleeding in the stomach, brain, or spinal cord; nosebleeds; and vaginal bleeding. If you recently coughed up blood or had serious bleeding, be sure to tell your doctor

When can I stop taking Avastin® (bevacizumab)?

There are some side effects that may require you to stop Avastin® (bevacizumab) therapy. But as long as your side effects stay manageable and your cancer is under control, you should keep taking Avastin. If your cancer progresses during treatment, talk with your doctor about whether continuing Avastin may be an option.

Can I breastfeed if I am on Avastin?

Breastfeeding while on Avastin may harm your baby, therefore, women should not breastfeed during and for 6 months after taking Avastin For more information about your treatment or condition, talk to your doctor.

Is Avastin a good choice for glioblastoma?

Patients with recurrent glioblastoma (a form of brain cancer) who were treated with Avastin® (bevacizumab) alone experienced a slight survival advantage compared with patients treated with Avastin plus Camptosar® (irinotecan).

Should Avastin be given first?

Avastin is given every 2 weeks for metastatic colorectal cancer (mCRC) patients starting Avastin for first- or second-line treatment. Avastin is given every 3 weeks for metastatic colorectal cancer (mCRC) patients continuing on Avastin for second-line treatment after a first-line treatment that included Avastin.

Is Avastin FDA approved for glioblastoma?

On December 5, the U.S. Food and Drug Administration (FDA) granted full approval of bevacizumab (Avastin) for the treatment of adults with recurrent glioblastoma that has progressed following prior therapy.

Is Avastin last resort for glioblastoma?

Together with the association of response with superior survival time and rate, the results indicate that bevacizumab may exhibit activity in glioblastoma as a last-line treatment.

Why was Avastin taken off the market?

On November 18, 2011, the US Food and Drug Administration (US FDA) announced that breast cancer indication for Avastin (bevacizumab) had been withdrawn after concluding that the drug has not been shown to be safe and effective for the treatment of breast cancer.

Who should not take Avastin?

Avastin should not be used for 28 days before or after surgery and until surgical wounds are fully healed. Pregnant or think you are pregnant.

Does Avastin prolong life?

Something similar happened with breast cancer: Avastin won the Food and Drug Administration's approval after studies suggested it delayed disease progression. But when later research showed it did not prolong life and brought more side effects, its approval for breast cancer was revoked.

How is Avastin administered for glioblastoma?

Avastin® (bevacizumab) is given as an infusion. That means you get Avastin through a small needle in your vein or through a port, which is a device placed under your skin. Because Avastin is given as an infusion, infusion-related reactions may occur.

What is the success rate of Avastin?

Results : Of 133 patients, 106 (80%) achieved treatment stability on Avastin. 70 patients (53%) were stable on injections every 8 weeks or longer, and 36 patients (27%) required injections more frequently than every 8 weeks.

What is the most effective treatment for glioblastoma?

The best treatment for glioblastoma currently is surgery to remove as much of the tumour as possible, followed by a combination of chemotherapy and radiotherapy.

What are the newest treatments for glioblastoma?

A clinical trial has found that selinexor, the first of a new class of anti-cancer drugs, was able to shrink tumors in almost a third of patients with recurrent glioblastoma, an aggressive brain cancer. “Glioblastoma is an incurable brain cancer that needs new therapeutic approaches.

How long does Avastin work for GBM?

The median duration of response was 3.9 months. In safety data from the AVF3708g study, the most common all-grade adverse events in the single-agent Avastin arm were infection, fatigue, headache, hypertension, epistaxis and diarrhea.

How often should blood pressure be monitored while on Avastin?

Blood pressure that severely spikes or shows signs of affecting the brain. Blood pressure should be monitored every 2 to 3 weeks while on Avastin and after stopping treatment. Kidney problems. These may be caused by too much protein in the urine and can sometimes be fatal. Infusion-related reactions.

How to report side effects of Genentech?

For more information about your treatment or condition, talk to your doctor. You may report side effects to the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. You may also report side effects to Genentech at 1-888-835-2555. Please see full Product Information for additional important safety information.

Is Avastin approved for glioblastoma?

Avastin is approved to treat glioblastoma (GBM) in adult patients whose cancer has progressed after prior treatment (recurrent or rGBM).

Does Avastin affect quality of life?

Avastin's impact on quality of life is also in question. This is a 2014 article from medscape talking about two pivotal Avastin trials:#N#"Both had similar primary outcomes, showing a 3- to 4-month prolongation of progression-free survival (from around 6 to 7 months with standard therapy to 10 months with the addition of bevacizumab), but no significant effect on overall survival (around 16 months).#N#However, the 2 trials showed "strikingly different" quality-of-life data, Howard Fine, MD, from the New York University Cancer Institute in New York City, commented at the meeting. He was not involved in either trial, and acted as a discussant.#N#"RTOG showed worsened patient-reported symptom burden and worsening neurocognitive function with bevacizumab. By contrast, the AVAglio trial showed the exact opposite — improved quality of life, prolonged Karnofsky Performance Scale scores, and reduced doses of steroids," he said."#N#Benefit of Bevacizumab in Glioblastoma Under Discussion#N#http://www.medscape.com/viewarticle/820821#N#Bevacizumab 'Not Cost-effective for Glioblastoma'#N#http://www.medscape.com/viewarticle/846053#N#As I mentioned earlier, there is a promising medication that has shown to significantly improve survival rate and quality of life. It's in phase 3 right now and may be the first drug to actually help rGBM patients.#N#https://clinicaltrials.gov/ct2/show/NCT02511405

Is VB 111 a vascular VEGF?

"VB-111 is specific for tumor vascular VS general VEGF allowing less side effects and more effectiveness" ... thanks for that explanation, HarleyE! I don't know the science well enough but that makes sense.#N#Your explanation for the Avastsin trial also helps. With the limited options available for rGBM. I'm surprised current rGBM/GBM trials are not talked about more.

When was bevacizumab approved?

Bevacizumab has been used in patients with GBM as a salvage therapy since its approval in the United States for recurrent GBM in 2009. In order to review the therapeutic effect of bevacizumab in the primary and recurrent clinical setting we have performed a systematic analysis of data from the published literature.

How long does bevacizumab last?

The survival advantage of bevacizumab compared to experimental therapy at recurrence is limited to 4 months. There is no additional benefit reported to date in health-related quality of life with the use of bevacizumab, although it may reduce steroid requirements.

Is bevacizumab used for glioblastoma?

The role of bevacizumab in the treatment of glioblastoma. Bevacizumab has been used in patients with GBM as a salvage therapy since its approval in the United States for recurrent GBM in 2009.

How often should I check my blood pressure while on Avastin?

Severe high blood pressure. Blood pressure that severely spikes or shows signs of affecting the brain. Blood pressure should be monitored every 2 to 3 weeks while on Avastin and after stopping treatment. Kidney problems.

How long should I use birth control after stopping Avastin?

If you stop Avastin, you should keep using birth control for 6 months before trying to become pregnant. Planning to become pregnant. Taking Avastin could cause a woman’s ovaries to stop working and may impair her ability to have children. Breastfeeding.

Can I breastfeed while on Avastin?

Breastfeeding while on Avastin may harm your baby, therefore, women should not breastfeed during and for 6 months after taking Avastin. For more information about your treatment or condition, talk to your doctor. You may report side effects to the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Does Avastin have any side effects?

Possible serious side effects. Everyone reacts differently to Avastin therapy. So, it's important to know what the side effects are. Although some people may have a life-threatening side effect, most do not. Your doctor will stop treatment if any serious side effects occur. Be sure to contact your health care team if there are any signs ...

Is Avastin a life threatening drug?

Possible serious side effects. Everyone reacts differently to Avastin. ®. (bevacizumab) therapy. So, it’s important to know what the side effects are. Although some people may have a life-threatening side effect, most do not. Your doctor will stop treatment if any serious side effects occur.

Can Avastin harm a baby?

Data have shown that Avastin may harm your unborn baby. Use birth control while on Avastin. If you stop Avastin, you should keep using birth control for 6 months before trying to become pregnant. Taking Avastin could cause a woman’s ovaries to stop working and may impair her ability to have children.

Does Avastin stop with lomustine?

In this study, 22% of people who took Avastin with lomustine stopped treatment compared to 10% of people who took lomustine alone. The side effects found in people taking Avastin and lomustine are similar to other trials.

Possible serious side effects

Everyone reacts differently to Avastin therapy. So, it's important to know what the side effects are. Although some people may have a life-threatening side effect, most do not. Your doctor will stop treatment if any serious side effects occur. Be sure to contact your health care team if there are any signs of these side effects.

Side effects seen most often

In clinical studies across different types of cancer, some patients experienced the following side effects:

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