deCODEme customer Anna Peterson on top of Acropolis on a camping trip in Athens.
By: Anna Peterson
I am a fit, healthy, 27 year old Canadian graduate student looking forward to the future. So why, you might wonder, did I decide to take the deCODEme genetic test? It’s simple really. Information is the key to prevention. By learning about my genetic predisposition for different illnesses, I will be better prepared to take an active role in my future health care decisions.
Many of my friends were surprised that I decided to take this comprehensive genetic test. Some were curious about the story my genes would tell, while others wondered whether or not I really wanted to know. When I put my genetic sample in the mail, I felt a little nervous about the chain of events I had set in motion, but curiosity overcame fear. In my opinion, knowledge is power and I’d rather make lifestyle changes in my 20s than in my 60s.
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A new genetic test assessing a woman's risk of developing the most common forms of breast cancer has arrived. Can the test, developed by the biopharmaceutical company deCODE, improve the way doctors screen for breast cancer?
Breast cancer kills 40,000 people a year in the U.S. This is about the population of Atlantic City, New Jersey. Imagine, each year an entire city wiped out by breast cancer.
To help fight breast cancer, a new test assessing individual risk has just become available. For women without a clear family history of the disease, the deCODE BreastCancerTM test assesses their personal risk of developing the most common forms of breast cancer. The DNA test, launched by the biopharmaceutical company deCODE, makes it possible to identify those women at significantly higher than average risk, helping doctors use new screening technologies and treatments in a more targeted, personalized and effective manner.
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Breast Cancer Network of Strength was started by Mimi Kaplan and Ann Marcou.
Attitudes towards breast cancer have changed quite a lot over the past three decades, a fact evidenced by the outpouring of response when stars such as Olivia Newton-John, Kylie Minogue, and, most recently, Christina Applegate, went public with their personal struggles with the disease. But this change in attitude is also reflected in many other ways and not least in the adoption of a new name for the patient advocacy and support organization that until now called itself Y-ME? Tomorrow, a gala event held at the Fairmont Hotel in Chicago will celebrate Breast Cancer Awareness Month and the evolution of Y-ME, 30 years on, into the Breast Cancer Network of Strength-a change they hope that will better communicate the organization’s mission to promote a proactive, engaged and positive approach to fighting breast cancer.
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On October 8th MSNBC published an article by Arthur Caplan, Ph.D. on genetic tests for breast cancer.
The following is a response by Jeff Gulcher, M.D., Ph.D, Chief Scientific Officer at deCODE Genetics.
Arthur Caplan stresses caution in the application of the new genetic risk tests for common diseases and I certainly agree that genetic testing should be applied with care. However, he goes too far when he says that the new deCODE BreastCancer genetic risk test is only useful for women who have two or more close relatives with breast cancer, is not based on large enough studies to be accurate, and is not regulated.
There are two major types of breast cancer: the rare, early onset form that occurs in certain families and for the detection (for which the Myriad Genetic test is well suited), and the common form which accounts for 95 percent of breast cancer. The vast majority of women who develop breast cancer do not have the conventional risk factors of family history, pregnancy history or breast density. Unfortunately, many of these women were likely considered to be of average risk before their cancer was found. Therefore, they were not even offered screening with breast MRI which detects two to three times more cancer at an earlier stage than mammography alone, or preventive measures such as tamoxifen treatment which can cut down cancer rates by 40 to 50%.
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deCODE Breast Cancer enables women to understand whether they may benefit from more intensive screening, monitoring or preventive drug therapy.
Reykjavik, ICELAND, October 8, 2008 – deCODE genetics today announced the launch of deCODE BreastCancer™, a new tool for assessing risk of the common forms of breast cancer. For the first time, a woman concerned about breast cancer can speak with her physician about a genetic test to better understand her lifetime risk of developing the common forms of the disease.
The common forms of breast cancer result from the interplay of genetic as well as environmental and lifestyle factors and represent 95 percent of all breast cancers. These are distinct from the rare and essentially purely inherited forms of the disease due to mutations in the BRCA1 and BRCA2 genes, which cause between 1 and 3 percent of breast cancers. deCODE BreastCancer™ is a DNA-based reference laboratory test performed using a simple blood sample or cheek swab, ordered by physicians on behalf of their patients.
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Scientists from deCODE genetics today report the discovery of two common single-letter variants (SNPs) associated with risk of estrogen receptor-positive (ER+) breast cancer. More than 60% of the general population carry at least one copy of the risk variant of the most important SNP, and women who have inherited the variant from both parents are at approximately 50% greater risk of developing ER+ breast cancer than women who have not inherited the variant. The second variant is located near the first and occurs only in tandem with it, adding slight risk of the disease. Although these variants confer modest risk, they are so common that they are estimated to account for approximately 11% of breast cancers overall.
With this latest discovery, the genetic factors underpinning a very significant proportion of inherited risk of ER+ breast cancer have now been elucidated. Common variants previously discovered by deCODE are together involved in an estimated 25% of ER+ breast cancers.
deCODE made today’s discovery through the analysis of genotypic data from a total of nearly 40,000 patients and control subjects from five countries. deCODE gratefully acknowledges the participation of the patients and researchers who took part in this study.
Link: Read the paper, ‘Common variants on chromosome 5p12 confer susceptibility to estrogen receptor-positive breast cancer’, in Nature Genetics
| Tags: Age Related Macular Degeneration, Anna Peterson, Breast Bancer, Gail Model, Skin Cancer. 
