Navigation Links
Health of entire families at risk through under-use of genetic testing
Date:6/7/2013

Paris, France: A new study of the use of genetic testing for cancer-causing mutations in affected families in France has found that its take-up is very low. Professor Pascal Pujol, Head of the Cancer Genetics Department, Montpellier University Hospital, Montpellier, France will tell the annual conference of the European Society of Human Genetics tomorrow (Sunday) that analysis of data from the French National Cancer Institute covering the years 2003 to 2011 showed that, although there had been a steady increase in tests performed for the breast and ovarian cancer-causing mutations BRCA1 and BRCA2, this was not the case with the MMR mutation, implicated in Lynch syndrome (a form of colorectal cancer). Only a third of relatives of individuals with either mutation underwent genetic testing themselves.

"Given that such testing can provide many options to enable individuals to manage their cancer risk, it is vital to encourage awareness and acceptance among both the public and medical professionals", he will say. "For example, removal of the ovaries in women over 40 years old who carry a BRCA mutation decreases their overall cancer mortality by 20% and prophylactic mastectomy can reduce the chances of breast cancer in women carrying such a mutation by around 90%. Those who are unwilling to undergo prophylactic surgery can benefit from increased surveillance, with regular MRI (magnetic resonance imaging) scans. For familial colon cancer, screening by colonoscopy has been shown to decrease mortality. It is therefore regrettable that so few people seem to be aware of the benefits of genetic testing in families with a history of breast, ovarian, or colorectal cancer."

Professor Pujol and colleagues from cancer centres across France analysed 240134 consultations and 134652 genetic tests from patients referred for a predisposition to breast or colorectal cancer. They found a substantial increase in tests for BRCA1/2 from 2095 a year in 2003 to 7393 in 2011 but for MMR mutations the increase was tiny from 1144 to 1635 a year over the same period.

Mutations in BRCA1/2 genes are thought to be responsible for about 5% of all cases of breast and ovarian cancer. A woman with such a mutation has a risk of up to 87% of having breast cancer before she reaches the age of 80, as opposed to a risk of 8% in the general population. Such cancers are diagnosed at an average age of 43, as opposed to 60 in the general population, and are often more aggressive. In the case of ovarian cancer, a woman carrying a BRCA1 mutation has a risk of ovarian cancer of up to 63%.

Individuals with Lynch syndrome, or hereditary nonpolyposis colorectal cancer, have a 45% risk of developing colorectal cancer by the age of 70, and women with the syndrome are at increased risk of endometrial and ovarian cancers.

"While the increase in BRCA testing is encouraging, it is far from optimal. And the uptake of MMR testing for Lynch syndrome - responsible for 5% of all colorectal cancers - is frankly disappointing", says Professor Pujol. "And of course, positive test results may have implications for other family members.

"While we have only studied the situation in France, we believe that our findings would be likely to be replicated in many other countries across the world. It is extremely worrying that such a simple test, which has the potential to spare whole families from devastating illness, is being so under-used. We urgently need a major programme of awareness among all those concerned, involving medical education and training, information programmes for patients and their families, public health campaigning, and improved genetic counselling," he will conclude.


'/>"/>

Contact: Mary Rice
mary.rice@riceconseil.eu
European Society of Human Genetics
Source:Eurekalert

Related medicine news :

1. You Survived Cancer: Now Pay Attention to Your Overall Health
2. NIH awards $20 million over 5 years to train next generation of global health researchers
3. Weill Cornell Medical College establishes Center for Healthcare Informatics and Policy
4. Esophageal Cancer Surgery Can Leave Lingering Health Problems, Study Says
5. Climate Change Could Be Tough on Seniors Health: Study
6. Supporting LGB children may influence their long-term health, BU study finds
7. U.S. Spends Too Little on Public Health Initiatives: Report
8. Optimal care of bariatric surgery patients vital for long-term health and well-being
9. Timing pregnancy an important health concern for women
10. Unique approach needed to accurately assess health of young adult cancer survivors
11. Social ties have mixed impact on encouraging healthy behaviors in low-income areas
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2017)... ... June 26, 2017 , ... ... leakage is revolutionizing the way women look and feel about themselves and their ... of female sexual dysfunction and urinary leakage head on with a ground breaking ...
(Date:6/26/2017)... ... June 26, 2017 , ... New patients with missing teeth ... with or without a referral. Dr. Cotey is a trusted dentist who has placed ... replacement option. , Patients with missing teeth in Fitchburg, WI, are encouraged to find ...
(Date:6/25/2017)... (PRWEB) , ... June 25, 2017 , ... An increase ... and growing foliage and plants, and along with that; a humdinger of an allergy ... sufferers, it also means an increase in misery-causing grass and weed pollen. , ...
(Date:6/24/2017)... ... June 24, 2017 , ... ... genetic testing for medications in select Florida and Texas doctors' offices and clinics. ... This new application of genetic testing recognizes the role genes play in determining ...
(Date:6/24/2017)... Killeen, TX (PRWEB) , ... June 24, 2017 , ... ... can boost home security, such as getting a guard dog or having an alarm ... homes simply aren’t secure against forced entry. Yair Frenkel, owner of TX Premier Locksmith ...
Breaking Medicine News(10 mins):
(Date:6/20/2017)... LAGUNA HILLS, Calif. , June 20, ... data that validate the use of MMprofiler with SKY92, ... multiple myeloma (MM). In a poster presentation at the ... (EHA) in Madrid, Spain , SkylineDx ... identifying high-risk elderly patients. In a ...
(Date:6/16/2017)... , June 16, 2017 Datascope Corp. is voluntarily performing ... Corp. for a potential electrical test failure code.     ... PART NUMBER ... CS300 IABP 0998-UC-0446HXX; ... This ...
(Date:6/14/2017)... CALABASAS, Calif. , June 14, 2017 ... with the City of Fremont ... chain of the bio-pharma industry in California ... sharing technology, enabling executive networking, and fostering workforce development. ... the development and growth of start-ups, as well as ...
Breaking Medicine Technology: