Navigation Links
Tiny genetic variation can predict ovarian cancer outcome
Date:12/5/2011

Yale Cancer Center researchers have shown that a tiny genetic variation predicts chances of survival and response to treatment for patients with ovarian cancer.

The findings, published in the journal Oncogene, provide new insights into the biology of a new class of cancer marker and suggest a genetic test may help guide the treatment of women with ovarian cancer.

"This gives us a way to identify which women are at highest risk for resistance to platinum chemotherapy, the standard treatment for ovarian cancer, and helps identify ovarian cancer patients with the worst outcomes," said Joanne Weidhaas, associate professor of therapeutic radiology and senior author of the study. "There just aren't many inherited gene variants than can do that."

Women who possess the biomarker identified by the Yale team a variant of the well-known KRAS oncogene are three times more resistant to standard platinum chemotherapy than women without the variant. Also, post-menopausal women with the variant are significantly more likely to die from ovarian cancer. About 12-15 percent of Caucasians and 6 percent of African-Americans are born with the variant of the gene, which helps regulate destruction of damaged cells. This variant is found in up to 25% of newly diagnosed ovarian cancer patients.

Although good alternatives to chemotherapy are not yet available for women with ovarian cancer and this variant, several drugs in development which target the KRAS gene and associated pathways have shown great promise, Weidhaas said.

Weidhaas is a co-founder of a company that has licensed intellectual property from Yale that has developed a diagnostic test based on the Kras-variant.

The biomarker intrigues scientists because it is a functional variant in an area of DNA that does not code for proteins. Instead this variant disrupts how a microRNA controls gene expression.

"This is a new paradigm," Weidhaas said.

Yale researchers have also found this microRNA variant of the KRAS gene is associated with an increased risk of developing breast cancer and lung cancer. Other researchers have found associations with poor outcome in colon as well as head and neck cancers.

In laboratory tests, researchers blocked the variant and significantly reduced growth of ovarian cancer cells. This suggests targeting the variant site may someday help treat cancer in these patients.


'/>"/>

Contact: Bill Hathaway
william.hathaway@yale.edu
203-432-1322
Yale University
Source:Eurekalert

Related medicine news :

1. Genetic sequencing could help match patients with biomarker-driven cancer trials, treatments
2. Unlocking the genetic and molecular mystery of soft-tissue sarcoma
3. CU-Boulder led study of smoking twins points to growing influence of genetic factors
4. Increasing dosage of clopidogrel for patients with genetic variation improves response to medication
5. Combination epigenetic therapy clinical trial results
6. Epigenetic therapy shows promise in hard-to-treat lung cancer
7. Breakthrough in understanding the genetics of high blood pressure
8. Possible Genetic Link to Autism Identified
9. Ohio State researchers design a viral vector to treat a genetic form of blindness
10. Study identifies genetic basis of human metabolic individuality
11. 23andMe discovers genetic variant that may protect those at risk for Parkinsons disease
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/30/2016)... , ... April 30, 2016 , ... ... announced RANKED Health , a program to critically evaluate and rank health-focused ... of the program is to provide independent, unbiased and accurate information to help ...
(Date:4/30/2016)... ... 30, 2016 , ... Orlando-based Maximized Living has selected Dr. Nick Wilson of ... Under the care of Maximized Living doctors at the London Olympics in 2012, ... Living is sending the largest contingent of elite chiropractors to Rio to support and ...
(Date:4/29/2016)... ... April 29, 2016 , ... ... the Accreditation Council for Graduate Medical Education (ACGME) that it has received accreditation ... the first accreditation of three residency programs that Memorial is currently pursuing, including ...
(Date:4/29/2016)... ... 29, 2016 , ... Dr. Bernie Siegel, (M.D.) ... MEDICINE and MIRACLES") addresses touchy topics related to Death live on Dr. ... Dr. Bernie Siegel, author of a plethora of essential books-to-read for physicians and ...
(Date:4/29/2016)... , ... April 29, 2016 , ... Spine Team Texas, ... is proud to announce one of their physicians has been invited to be a ... (Texas ACOFP) Family Practice Review conference on April 30, 2016. , Dr. R. ...
Breaking Medicine News(10 mins):
(Date:4/28/2016)... 28, 2016  While Abbott,s announced purchase of ... valve repair and stent business, healthcare research firm ... more firmly into patient monitoring.  Kalorama said that ... device areas, with double-digit growth expected the next ... Advanced Remote Patient Monitoring . Abbott Laboratories ...
(Date:4/28/2016)... Calif. , April 28, 2016  Marking ... widely accessible breast and ovarian cancer risk test, ... panel analyzing 30 genes that highly impact the ... women. Available today, the Color Test analyzes hereditary ... prostate, stomach, and uterine cancers. The Color Test ...
(Date:4/28/2016)... , April 28, 2016  The blood testing ... million dollars, according to Kalorama Information and The Freedonia ... immunoassays and nucleic acid testing.  The healthcare research firm ... progress in developing blood collection stations and in improving ... in Kalorama Information,s report, Blood Testing Market ...
Breaking Medicine Technology: