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 BreastCancer^TM 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.

The key to fighting breast cancer, like all cancers, is early detection, which is why the medical field is buzzing over deCODE’s new breast cancer test.

“This test helps define individual prevention which is what so many of my patients want,” says Owen Winsett, MD, founder and director of the Breast Center of Austin.

Dr. Winsett, who has already ordered the test for 25 of his patients, can’t hide his enthusiasm over how the decode breast cancer test is changing the way he screens for the disease.

“I’m excited to be able to extend my screening and prevention practice. I plan to make this test a standard tool for helping me decide which of my patients may benefit from screening at an earlier age, or benefit from more intensive screening, including breast MRI’s. And then if my patients don’t have breast cancer, to motivate them to begin healthy preventive strategies.”

The test is not offered directly to individual women, but rather ordered by doctors on the request of their patients. deCODE advises that the test-which scans a woman’s genome for seven widely replicated single-letter variations (SNPs) in the human genome that are linked to increased risk of breast cancer-is a way to better connect doctor and patient.

Dr. Winsett agrees. He recommends that before taking this test women should consult their general practitioner, and if their doctor is uncertain about how to use the results of the test, to seek out a breast cancer specialist.

Like all new technologies – particularly those that may change accepted clinical practice – this type of risk screening has raised concerns in some quarters. Some critics have argued that the test is not accurate enough because it’s not based on a large enough sample of women to predict risk of breast cancer. However, the evidence tells a different story. According to Dr. Winsett, epidemiological studies on breast cancer present a fairly straightforward argument that deCODE’s genetic test does indeed give a picture of a patient’s baseline risk. The evidence shows that the seven SNPs in the human genome that the decode test scans for are linked to an estimated 60 percent of all breast cancer cases. These findings are derived from integrated data from discovery and replication studies published in major peer-reviewed journals and involving nearly 100,000 breast cancer patients.

“I remind patients this test is one peice of the puzzle,” says Dr. Winsett. “The test won’t tell patients if they will get breast cancer or if they won’t. It shows the average risk, and then says where a woman stands in relation to that average and then what her absolute risk is. As a doctor, deCODE’s breast cancer test helps me evaluate a patient and make a future plan for prevention and testing.”

Still, some non-clinicians feel genetic testing only benefits women who have a strong family history of breast cancer. One bioethicist recently wrote on an MSNBC blog that “the tests Decode and other companies are offering are more likely to empty family pocketbooks and leave women with a false sense of security than they are to prevent breast cancer.”

Dr. Winsett finds this argument muddled. There are already tests to pick up genetic risk factors for highly familial forms of the disease, and neither those tests nor deCODE’s for measuring risk will cure or prevent breast cancer. Dr. Winsett notes that mammograms, ultrasounds and breast MRIs don’t prevent women from getting breast cancer either, but doctors still use them because they are tools to help detect breast cancer.

“Sometimes a patient will say, ‘I’ve had a mammogram regularly, so how can I get breast cancer?’ It’s easy to think that. But neither mammograms nor the deCODE test can on their own prevent breast cancer. It’s how you use the information from the genetic test to shape a patient’s care that leads to prevention or early detection.”

Genetic risk screening for breast cancer might sound like cutting-edge medicine, but doctors have been using genetics to assess risk of developing breast cancer for years. There are genetic tests that look for mutations of the BRCA 1 and BRCA 2 genes. Variations in these genes are linked to the rare and essentially purely genetic forms of breast cancer.

While detecting the BRCA variants is considered very valuable information to women with a family history of the disease, doctors and researchers knew genetics would one day play a bigger role in the remaining 95 percent of breast cancers. The deCODE BreastCancer^TM test is aimed squarely at filling this gap, and to broadening the use of genetics in fight against breast cancer.

When a woman’s genome is scanned with deCODE BreastCancer, deCODE’s CLIA-registered laboratory checks for certain versions of seven single-letter variations in the genome, called SNPs. According to which versions are detected, that woman’s risk is then tallied, adding together the risk of each of the seven SNPs, to yield a score in relation to average risk, which is about 12% for American women of European origin. By multiplying the relative risk by the average, the results also provide a score of a woman’s absolute risk of developing breast cancer in her lifetime.

Depending upon a woman’s assessed risk, her doctor may suggest that she receive regular mammograms earlier than age 40, the standard starting age in the United States. If the test reveals a high risk, clinicians like Dr. Winsett might order a more advanced breast MRI or an ultrasound test for his patient. In some cases, high-risk patients with other contributing risk factors might start on a course of treatment to reduce the risk of tumors.

Decode’s breast cancer test is not a silver bullet. It won’t cure cancer. It measures risk and will be used in conjunction with other diagnostic tools and treatments to reduce the impact of the disease. But by using deCODE’s genetic test to find out which patients have a higher risk for the disease, says Dr. Winsett, earlier detection of breast cancer is possible.

“With the advent of deCODE’s breast cancer test we can intervene before the cancer happens. My hope is that we’ll see fewer breast cancers. I’m in business of dealing with breast lumps. I’m hoping this test can help reduce the breast lumps that I see.”

Jack Doughery says deCODEme genetic test was an investment

Jack Doughery feels great and wants everyone to know it.

“I almost feel evangelical about my health,” says the 62-year-old businessman from Spokane, Washington. “I’m so excited about what can happen if you do the right things and have the right tools.”

Jack started doing the right things once he began what he calls his journey, which kicked off one day after waking up at three in the morning craving a cigarette.

“When you’re waking up at three in the morning, coughing and spluttering, and the only way to calm down is by smoking a cigarette, you don’t have to be too smart to know this might not be the way to go. It got my attention,” he remembers.

One of Jack’s first stops along his grand trip was at Spokane’s Heart Attack and Stroke Prevention Clinic, run by nurse practitioner Amy Doneen. It was Doneen and Dr. Bradley Bale who put Jack on the path to prevention, helping Jack to reshape his life using diagnostic testing, nutrition and exercise.

Recently, Amy Doneen began using a new test to help alter Jack’s journey—deCODEme, a genetic test that scans a patient’s genome for markers relating to 30 various diseases. The deCODEme genetic test gauges a patient’s average and lifetime risk of developing diseases such as Alzheimer’s, heart attack, prostate cancer, and most recently bladder cancer.

“I’m no doctor,” Jack says. “But in laymen’s terms, the tool is another arrow in Dr. Bale’s quiver to help me do the right things.”

Jack hasn’t always done the right things. In addition to his a two-pack-a-day habit, he often drank copious amounts of alcohol. He was, in his own words, in “bad shape.” Even the death of his father at the early age of 62 didn’t alter the trajectory of his unhealthy lifestyle.

“Back then, I thought 62 was old. Now that I’m 62, I’ve changed my mind.”

deCODEme genetic test customer Jack Doughery

Children often pick up their parents’ habits, and so it was for Jack. One of those habits was a breakfast straight from the heart-attack diet.

“We ate bacon, sausage, eggs, all fried and cooked in lard. We had biscuits, gravy and maybe some peach or cherry cobbler,” he says, and then to make sure he’s understood, he emphasizes: “I’m still talking about breakfast. I haven’t moved on.”

Pulling no punches, this eat-everything diet made Jack—”fat.”

“I was one large unit,” he remembers. “I weighed 197 pounds in the eighth grade. I had to breathe hard just trying to walk.”

That changed when Jack discovered girls. Realizing that most girls weren’t interested in boys that looked like him, he began eating nothing but cottage cheese and lost 60 pounds in 90 days.

“I think I was the first person to invent the Atkins diet,” Jack says with a laugh, referring to the popular diet consisting of high protein and low carbohydrates.

But the weight loss was only temporary. Jack continued to smoke and drink and the pounds piled back on. Jack says that he didn’t really take control of his health until he started a family. It was then he realized that he wanted to be around to see his grandchildren. So he quit smoking and drinking all in one day and began an exercise program. This, he recalls, was his first investment in his own health.

“I weighed over 200 pounds. Now I weigh 166 pounds. I wanted to make sure when I was older I was living a quality life rather than just trying to make it.”

Helping Jack live a quality life are Dr. Bradley Bald and Amy Doneen, who discovered that Jack was loaded up with arterial plaque. When Jack was only 52, his vein age was 70. Today, after they helped Jack remake his lifestyle, Jack’s vein age is 49. Dr. Bale and Doneen helped improve Jack’s health by putting Jack on an exercise and nutrition program and by prescribing medication that reduced his cholesterol levels.

“Dr. Bale totally turned my life around.”

But getting Jack back in shape required more than fixing his weight and reducing the accumulation of plaque in his blood vessels. Even after these changes, Amy Doneen recommended that Jack go even further and take the deCODEme genetic test. By that time, Jack had been working with The Heart Attack Prevention Clinic for years and was in great shape. He’d step on the treadmill, and raise the pace and incline, but Jack kept going. He’d ace the stress test every time.

“If you looked at me you’d say, wow, that guy is in great shape.”

But the deCODEme test revealed something that had previously remained hidden. Jack had a significantly higher than average risk of developing diabetes. This was a louder alarm than the 3-am cigarette.

“Diabetes. That’s what killed my dad,” Jack laments.

While the result scared Jack, he says that he was quickly comforted by the fact that he knew his vulnerabilities and that enabled him to take extra preventative precautions. The test, he says, was well worth the $1000 he paid for his results.

But let’s face it. The economy is tight. Gas prices are going through the roof. Food prices keep rising. Health insurance costs are out of control. Some potential patients look at the cost of the test and wonder if it’s worth the money. After all, not everyone is a successful businessman and public speaker like Jack. But Jack has a simple answer for them.

“I was talking to my brother about this very thing. I told him, ‘Is your life worth $1000?’ Now that might not be something a doctor can say, but that’s my opinion. I think people have to look at it in perspective. They wouldn’t even blink at spending that much on a big-screen TV. And they’ll even put it on a credit card and pay for it over 30 years. So what’s the priority? I don’t look at the test as spending money. The deCODEme test is an investment in yourself.”

Jack takes the money out of the equation. His thoughts turn to his four grandchildren. He wants to watch them grow up. He understands deCODEme’s genetic test is not a silver bullet, and won’t enable him to avoid all illnesses. It’s another tool, or as Jack repeats, another arrow in Doneen and Dr. Bale’s quiver.

“It gives Dr. Bale another awesome tool to assist me on this awesome journey. And at 62 here I am. I feel fantastic.”

Jack Doughery's genetic test showed that he had a significantly higher than average risk of developing diabetes.

By Edward Weinman

With a simple swab from the inside of your cheek, deCODE genetics can scan your DNA, map your markers and assess your risk of developing 29 common diseases. Edward Weinman, self-described hypochondriac, wonders if he should look too closely at his possible future.

Fifteen hundred Americans will die of cancer today. Tomorrow, another 1,500 will perish. And the day after tomorrow: yet another 1,500.

While I’ve never had cancer (knock on wood) I know how the disease changes lives. My grandmother died from it. My brother has non-Hodgkin’s lymphoma, although thankfully it’s currently in remission after a lengthy round of chemotherapy. Cancer is scary. It accounts for one out of every four deaths. According to the American Cancer Society, cancer is the second leading cause of death in the US, behind heart disease.
Oh, yeah. Heart disease. The great American killer. Heart disease kills 652,486 Americans per year, according to the National Center for Health Statistics. Let’s not forget Alzheimer’s, no pun intended. This cruel disease that strips us of our memories is the sixth leading cause of death, and rising. Every 71 seconds, someone develops Alzheimer’s, including my mother. It’s hard to face the fact there is almost nothing we can do about some diseases, except prepare ourselves and our loved ones for the eventuality.
On the other hand, there are so-called killer diseases on which we can have a positive impact. We cut back on fatty foods and load up on vegetables. We increase our daily intake of fiber by eating cereal that tastes like bark dust. We pop vitamins. We spend time in the gym, going from workout station to workout station like a rat in a cage. Some of us work through crossword puzzles in the hope that mental gymnastics will keep plague from forming in our brains.

But are these healthy habits enough? Is there something more I can do to protect myself from these killer diseases?

For about $1000, deCODE will scan my genome for genetic markers linked to such killers as heart disease, diabetes, certain types of cancer and Alzheimer’s. All that’s required is for me to order a kit, swab the inside of my cheek, drop the swab into the mail, wait a few weeks and then log on to decodeme.com to view my results.

According to deCODE, discovering an inherited propensity toward a particular illness can motivate individuals to get more frequent checkups, take preventive medicines or make lifestyle changes to try to ward off the specter of disease.

But is it really a good idea for a hypochondriac like myself to know my own DNA? What if I discover that I have a high risk of heart disease? Will I soon be hauling myself off to the ER complaining of chest pains? Until recently, my view is that it would have been better to live and hope for the best rather than discover I have a high probability of developing a fatal condition. Ignorance is bliss.

Then my mother fell ill. And my brother got sick. As far as my own health, I exercise like a banshee. However, despite all the hours logged in the gym, I’ve taken more than one trip to the ER because of chest pains. I’ve had EKGs, stress tests, even a CT angiogram which all revealed that my heart was strong. The cause of my chest pains: stomach ulcers and, later, anxiety. But that helpless feeling of lying in the ER as doctors connect EKG leads to my chest sometimes returns. I worry about my health more than most 41-year-olds. So maybe a genetic test is exactly what I need to put my mind at rest.

Yes, I want to arm myself with as much information as possible in order to fight what might be coming, or at least prepare for what might await me on the horizon.

“We need to empower people,” says Dr. Robert Superko, author of the book Before the Heart Attacks, and executive director of the Center for Genomics and Human Health at the St Joseph’s Translational Research Institute. “If a genetic test prompts people to do what’s right for them then we have accomplished our goal.”
I order the kit.

Sitting at my laptop, logged on to deCODEme.com, the genetic secrets to my future health are only a mouse click away. I can click to see my inherent risks of contracting all 29 of the diseases deCODE tests for, or click on the results one disease at a time, leaving the scary diseases for later, or not at all. It’s my choice.

I’m not really concerned about whether or not I’m lactose intolerant. I’m not too worried about Celiac disease, or restless-leg syndrome. No, I’m sweating over the Alpha diseases: Prostate Cancer. Alzheimer’s. Heart Disease. What if my test results portend to a future weighted down by Chemo, or if I’ll one day take Arecept, or have a stent inserted into my arteries?

I demur. You know, no news is good news. The last thing a hypochondriac like myself needs is a fortuneteller mapping out my future in a pack of tarot cards. I understand that information is power, but what about Alzheimer’s? If my risk is relatively high, I can whittle down pencil after pencil working on the NY Times crossword and not really reduce my risk, even if I throw in a few Sudoku puzzles for good measure.
“The test is a way of bringing patient and doctor together,” says Dr. Jeffrey Gulcher, deCODE’s chief scientific advisor. “The test gives you a risk assessment, and then you and your doctor can figure out what to do about it.”

So the test is not definitive. It’s not a diagnostic tool in the usual sense. If I have a higher than normal inherited risk of heart disease that doesn’t mean I have to replace my artery clogging Ben & Jerry’s Chocolate Fudge Brownie with apple slices. If my risk of Alzheimer’s is high I’m not going to have to purchase an identity bracelet with my name, address and phone number engraved on it in case I get lost.

“The genetic test is analogous to a cholesterol test,” says Dr. Gulcher. “Just because you have high cholesterol, doesn’t mean you’ll have a heart attack. Just because you have low cholesterol, doesn’t mean you’re off the hook.”

I breathe a sigh of relief. I can look at my results without breaking out into a cold sweat. My DNA results aren’t going to say: “Tomorrow, Edward Weinman, you’ll contract cancer.”

Then again, Dr. Gulcher’s recent health issues suggest that comparing the deCODEme genetic test to a cholesterol screening is not all together an accurate analogy. Months ago, Dr. Gulcher took the swab, and his genetic profile revealed that he had a 30 percent lifetime risk of contracting prostate cancer. At 48, Gulcher was still two years away from when most medical experts believe prostate screening should begin.
How did Dr. Gulcher take the news? He was empowered. Dr. Gulcher took a standard blood test measuring his prostate-specific antigen, or PSA, which showed he was at the high end of normal. This data, combined with Dr. Gulcher’s DNA test, compelled his doctor to refer Gulcher to a urologist who performed an exploratory biopsy. The biopsy’s result? “A fairly aggressive form of cancer,” Dr. Gulcher recalls. Thankfully, Dr. Gulcher’s cancer had not spread to other parts of his body, and he underwent surgery to remove the cancer. Dr. Gulcher has just had his catheter removed when I ask him if deCODE’s genetic test saved his life.
“I can’t say for sure, but it’s likely it did. I had a tumor at the time of diagnosis. There is a good chance that tumor would’ve already spread” by the time he went in for a normal PSA screening at the age of 50.
Okay, I’m convinced. Time to decode my DNA. I click on the link and my test results are revealed:
My relative genetic risk for Alzheimer’s is 1.74, translating into a lifetime risk of 10.5 percent.

Not so bad, right? Not exactly. The average risk of contracting the disease is 6.4 percent. So I’m higher than average. But what stands out like a scar on a model’s face is when I look at the percentage of the population at a less or equal risk to me: 97.2 percent. In other words, only 2.8 percent of the population has a higher risk of contracting Alzheimer’s than I do.

So what does this mean?

“We emphasize that these are not determinative factors. They reflect risk. Relative risk,” Dr. Gulcher tells me.
He’s got a point. When I look at my risk of becoming obese I realize these results must be taken with a grain or two of salt. My DNA says that my relative genetic risk for obesity is .80, translating into a 31.6 percent chance of becoming fat. I chuckle, because I work out four to five days a week, and I’m what you might call skinny, or as I prefer, lean and toned. Plus, my metabolism works at hyper speed. At 41, I can proudly say that I have a six-pack. So a 31.6 percent risk of becoming fat? I don’t think so. (There’s no need to elaborate more because this grain or two of salt is refuted below, in that the test is necessary, and one that can improve health. One must always present the counter argument to make the argument stronger.)
Again, deCODEme only provides me with information on my “relative” risk of contracting common diseases. It’s not definitive. But can’t I just look at my parents’ and grandparents’ health and the health of my siblings to decode what diseases might afflict me when I grow older? Do I really need to pay $1000 for a genome scan?

“That would work well for certain diseases, like certain types of breast cancer, but common diseases tend to skip generations. Most of us don’t keep track of our genealogy. But that’s what’s going on when we find these common variations.” Dr. Gulcher continues: When we run a test “we are percolating the risk through your family’s history of disease.”

Dr. Gulcher then asks me a question. He curiously wants to know what my top two diseases are in terms of risk. I figure Alzheimer’s is number one, until I scan down my gene profile and learn that I have a 2.3 relative genetic risk of developing Type 2 Diabetes, translating into a 57.5 percent lifetime risk, double the average lifetime risk.

Not a chance. No way is it possible that I’m at risk for diabetes. I’m healthy. I eat right. I exercise. I’m not even close to being overweight. My BMI is perfect. I went so long during my last stress test that the cardiologist asked if I ever ran cross-country competitively. How can I be at risk for Type 2 Diabetes? Surely this proves deCODEme’s genetic test must be taken with many grains of salt. Perhaps this invalidates all my other results.

The doctor draws my blood and ships it off to the lab.

A few days later, I find out that my fasting glucose level is 96 mg/dl. That’s the high end of the normal range but a lot higher than I expected. One indication of pre-diabetes is a fasting glucose level that is between 100 and 125 mg/dl. Talk about a wakeup call. Despite my healthy lifestyle, my glucose levels are too high and that can be nothing other than genetic.

I remember Dr. Gulcher’s words: “The test is a way of bringing patient and doctor together. The test gives you a risk assessment, and then you and your doctor can figure out what to do about it.”
There’s no need to panic, but it is time to make an appointment to see my doctor. It’s time to trade in my Ben & Jerry’s for those apple slices.

Edward Weinman is a freelance writer living in Los Angeles, and a contributor to deCODE’s News Blog. He spent eight years in Iceland, working as a journalist and he co-wrote the film A Little Trip to Heaven.