Who can join the Sister Study?
• are a woman living in the US • have never had breast cancer • are 35 to 74 years old, and • have a sister related to you by blood who has had breast cancer. Back to top Why aren’t you studying women who have breast cancer? The Sister Study collects information about genes and environmental exposures. This information is collected before a woman’s body has been changed by breast cancer, its treatment, or changes she might make in her lifestyle after being told she has breast cancer. Researchers will be able to compare this information between women who do and do not get breast cancer in the future. By collecting this information before a woman develops breast cancer, researchers can better discover factors that may cause breast cancer. Back to top Why can’t women who are younger than 35 or older than 74 join the Sister Study? While we would like to include sisters of all ages in the study, we must look at the age group of women that can best help us find answers about breast cancer. W
