Navigation Links
Brain Scan May Help Predict Cancer Drug Response

Identifying tumors treatable with Avastin has multiple benefits, researchers say,,

THURSDAY, July 30 (HealthDay News) -- A new way to predict which brain cancer patients will respond to the drug Avastin has been developed by U.S. researchers.

Avastin, which shrinks tumors by cutting off their blood supply, was approved this spring by the U.S. Food and Drug Administration for treatment of aggressive brain cancer. However, half of those with the cancer don't respond to the drug, which can cost up to $10,000 a month, according to a news release from the University of California, Los Angeles.

UCLA researchers examined 82 people who had surgery and radiation to treat glioblastoma, the most common and deadly form of adult brain cancer. Half of them were given infusions of Avastin every two weeks, and all had monthly MRI brain scans to monitor changes.

An analysis of the scans showed that there was greater water movement in the tumors of people who later had the best response to Avastin. By using MRI to measure the amount of water motion within the tumor, the researchers were able to predict with 70 percent accuracy which tumors would progress within six months and which would not.

Increased water movement in tumors is linked with higher levels of a growth factor called VEGF, which is secreted by a tumor to promote the growth of new blood vessels that provide the tumor with oxygen and nutrients. Avastin blocks VEGF, the researchers explained.

"When we realized that high levels of VEGF are linked to greater cell death and increased water movement, we were able to predict the patients' response to Avastin before they began treatment," lead author Dr. Whitney Pope, assistant professor of radiological sciences at UCLA's David Geffen School of Medicine, said in the news release.

"We were correct 70 percent of the time," Pope said. "Previously, identifying which patients would respond was like flipping a coin. This is a huge improvement."

The study appears in the July issue of Radiology.

"Knowing this information ahead of time will help doctors personalize therapy for each patient and decrease exposure to side effects," Pope said.

He and a co-author are consultants for Genentech, which makes Avastin, and are working with the company on several research studies.

More information

The U.S. National Cancer Institute has more about brain tumors.

-- Robert Preidt

SOURCE: University of California, Los Angeles, news release, July 30, 2009

Copyright©2009 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Draining away brains toxic protein to stop Alzheimers
2. Vision restoration therapy shown to improve brain activity in brain injured patients
3. Clinical depression linked to abnormal emotional brain circuits
4. Brain imaging reveals breakdown of normal emotional processing
5. Brain cells work differently than previously thought
6. Vaccine Stops Alzheimers Brain Tangles
7. Research may unlock mystery of autisms origin in the brain
8. Scientists Spot Brains Free Will Center
9. Free will takes flight: how our brains respond to an approaching menace
10. Alcoholics With Cirrhosis Have More Brain Damage
11. Brain Lesions Predict MS Progression
Post Your Comments:
Related Image:
Brain Scan May Help Predict Cancer Drug Response
(Date:11/25/2015)... Spring, Md (PRWEB) , ... November 25, 2015 ... ... Pulmonary Hypertension Association (PHA) announces the nation’s Periwinkle Pioneers, individuals and groups responsible ... history of this disease. The Periwinkle Pioneers, nominated by the public, will receive ...
(Date:11/25/2015)... ... November 25, 2015 , ... ... philanthropic seniors, is resulting in a way for homeless people to have a ... have launched a new initiative whereby they are repurposing plastic bags into sleeping ...
(Date:11/25/2015)... ... November 25, 2015 , ... Since its launch in ... involving adult stem cell therapies to patients with chronic degenerative medical conditions. Now, ... a Registered Trademark (RTM). , Organizations are required to hold a registered trademark ...
(Date:11/24/2015)... ... November 25, 2015 , ... Genesis Chiropractic Software helps practice ... an agreement between the practice owner and the patient that automatically manages all ... projections. Click here to learn more. , According to ...
(Date:11/24/2015)... , ... November 24, 2015 , ... New patients who ... a referral for dental implants at her Mississauga, ON practice. Dr. Williams ... in the placement of dental implants. , Missing teeth can lead to a ...
Breaking Medicine News(10 mins):
(Date:11/24/2015)... , Nov. 24, 2015  DILON Diagnostics and ... signed an agreement for DILON to distribute GE,s Discovery ... the globe. The signing of this distribution agreement will provide ... Molecular Breast Imaging system and is considered an initial ... better healthcare solutions for clinicians and their patients. ...
(Date:11/24/2015)... 24, 2015 . ... adds Latest Guidebook for Chinese Medical Device ... published in November 2015 to the medical devices ... library at . ... growing global economies with a fifth population in ...
(Date:11/24/2015)... -- Figure 1, a free mobile-first network that enables healthcare ... a new completely redesigned web version that includes uploading. ... work primarily on a desktop, to upload images directly ... user base, Figure 1 is hosting an event during ... (RSNA) Annual Meeting. Joshua Landy ...
Breaking Medicine Technology: