Breast cancer is the most common cancer among American women, but only 5-10 percent of breast cancer cases are hereditary. Of those cases, roughly 20-25 percent are linked to mutations in the BRCA1 and BRCA2 genes (BRCA stands for BReast CAncer susceptibility).
View the infographic below for more on the genetics of breast cancer.
Although there are two main types of cervical cancer, known as adenocarcinoma and squamous cell carcinoma, they’ve generally been treated as one disease, with the same approach to treatment. In a recent study, my colleagues and I surveyed the DNA in both types of cervical cancer cells to see if there were any differences. Such variations may help explain why the two types sometimes behave the way they do, and guide us toward treatments that work best in one type or the other.
A preventive (or prophylactic) mastectomy is the removal of a healthy breast to reduce the chances of developing breast cancer in that breast. A patient might consider a preventive mastectomy under different circumstances, including: There are many things to consider before deciding. Mastectomy is major surgery, so it is important to understand the risks and … Read more
Physicians have long recognized that the same disease can behave differently from one patient to another, and that there is no one-size-fits-all treatment.
In cancer, chemotherapy might dramatically shrink one lung tumor but prove ineffective against the same type of tumor in a different patient – even though tissue samples look identical under the microscope. Side effects and appropriate dosage may vary from patient to patient as well.
The goal of personalized medicine is to match a treatment to the unique characteristics of an individual patient: his or her personal and family medical history, age, body size, and other physical characteristics, and medical test results. But fundamentally, it is the DNA blueprint within cells that strongly influences a person’s risks of disease, how illnesses play out, which drugs are likely to be most effective and with the fewest side effects. This is where the newest phase of personalized medicine is heading.
Testicular cancer is the most commonly diagnosed cancer in young men (ages 15-34). It is also one of the most treatable and curable types of cancers.
Lung cancer can be a frightening diagnosis. However, new treatment approaches and promising research trends have made the outlook for patients a little more optimistic, says David Jackman, MD, an oncologist in the Lowe Center for Thoracic Oncology at Dana-Farber Cancer Institute.
There are many decisions parents face after testing for genetic cancer risk, including whether to tell their children and how to approach the conversation.
If you decide to talk to your children about the test results, allow yourself some time to process the information; you want to be calm and clear when you talk with them. Remember that you know your children best and there are no set rules for talking to kids about genetic tests.
You also may want to talk with your spouse and decide whether you would like to speak with the children together or individually. It is good to be aware that sometimes spontaneous discussion opportunities arise – such as driving a child to school or practice – when a child asks a question that can disrupt parents’ plans for informing them, but can feel like a natural way for the topic to come up and be talked about.
When Angelina Jolie underwent a preventative double mastectomy earlier this year, this issue of cancer risk and genetics made front-page headlines. Jolie, who announced the operation in a New York Times op-ed, tested positive for the BRCA1 gene mutation and learned she had an 87 percent risk of developing breast cancer.
Jolie’s announcement left many women wanting to know more: What is a gene mutation? Should I undergo genetic testing? What should I do if my tests are positive?
By Eric Schuller
If you recently learned you have cancer, donating a sample of your cancer tissue to science is probably the last thing on your mind. But it’s a topic that you might discuss with someone on your health care team, because cancer researchers often rely on donated tissue samples to help them better understand what causes cancer and which treatments are most effective.
Actress Angelina Jolie is no stranger to the headlines, but she stunned the world with her Op-Ed in The New York Times, in which she shared her very private decision to have a preventive double mastectomy after testing positive for the BRCA1 gene mutation. “I hope that other women can benefit from my experience,” wrote Jolie. … Read more
Today, three quarters or more of all childhood cancer patients will be cured of their disease, a higher percentage than ever before. And the numbers will only get better as we learn more about the biology of childhood cancers and develop new ways of treating them.
We know that women who inherit harmful mutations in the genes BRCA1 or BRCA2 have a sharply increased risk of developing breast and/or ovarian cancer at an early age (prior to menopause). In fact, women with inherited BRCA1 or 2 mutations are about five times more likely to develop breast cancer — and at least 10 times more likely to develop ovarian cancer — than women without such mutations, according to the National Cancer Institute.
Win or lose, Miss America contestant Allyn Rose made news with her decision to undergo a double mastectomy. According to the Associated Press, Rose, who lost her mother to breast cancer, inherited a rare genetic mutation which might put her at greater risk for developing cancer.
Her decision to have the preventive surgery has sparked questions about genetics, cancer risk and strategies for preventing cancer.
If you have a question about genetic factors that increase cancer risk, you can ask the Dana-Farber cancer genetics team.
For David Williams, MD, the field of pediatrics offers two great attractions.
“It is wonderful because of the kinds of patients you take care of,” he says. “But also because of the personalities of pediatricians – in pediatrics you find very compassionate and caring people.” Williams embodies that compassion and combines it with a drive to solve the medical problems of young patients, often with the use of cutting-edge technology.
Cancer scientists use a wide variety of techniques to study the growth and development of tumor cells. Laboratory research often focuses on individual cells or tissue samples, but to learn how cancers grow and respond to therapies in living organisms, scientists rely on other experimental models. In recent years, zebrafish have become the model of choice for studying many cancer types. Dana-Farber’s A. Thomas Look, MD, who uses zebrafish in his own work, explains why.
Genes don’t cause cancer, but genetic mutations can. Our cells have about 22,000 genes, which consist of DNA packed into chromosomes inside the cell nucleus. These genes control a wide range of functions, including cell growth and division. When the genes misbehave or mutate, cancer can develop. Sometimes these mutations are inherited. In that case, … Read more
The complicated meaty machine that is the human body can break down in a remarkable variety of ways. The 9th edition of the International Classification of Diseases (ICD-9) includes more than 16,000 afflictions – everything from the bite of a venomous tropical millipede to injury by falling spacecraft debris. With all of these dangers, it is … Read more
If your son or daughter has been diagnosed with a type of sarcoma – a tumor in connective tissue like muscles or bones – there are many questions: Will my child make a full recovery? What are the immediate and long-term side effects of treatment?
Most parents don’t consider whether their child will face a second cancer later in life.
However, a link between sarcomas and Li-Fraumeni syndrome, a rare condition that raises a person’s risk of developing one or more cancers to as high as 85 percent, has led genetic specialists at Dana-Farber/Boston Children’s Cancer and Blood Disorders Center to recommend that all child sarcoma patients be offered genetic counseling for Li-Fraumeni syndrome.