A study to find out more about the causes of breast cancer (The British Breast Cancer Study BBC-NCRN Cohort)
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This study collected information to help find out more about the causes of breast cancer that runs in families.
There are many risk factors associated with breast cancer. Doctors know that if you have a strong family history of breast cancer, there may be a faulty gene that increases your risk. They also know that certain 
affect your risk.
In this study the research team collected blood samples and information about lifestyle and family medical history from women with breast cancer. They also collected information from women who had not had breast cancer.
The aim of the study was to find out more about the pattern of cancer in the families of women with breast cancer. And to find out what specific factors might be causing this.
Summary of results
The information and blood samples collected in this study have been used to look for genes that increase the risk of breast cancer. The UK researchers have found some genes themselves. They have also contributed samples and information to many international studies which have so far discovered about 70 such genes. Although the study finished recruiting in 2010, work using these samples will continue for many years.
Recruitment start:
Recruitment end:
How to join a clinical trial
Please note: In order to join a trial you will need to discuss it with your doctor, unless otherwise specified.
Chief Investigator
Professor Julian Peto
Supported by
Cancer Research UK
Institute of Cancer Research (ICR)
London School of Hygiene and Tropical Medicine
National Institute for Health Research Cancer Research Network (NCRN)
If you have questions about the trial please contact our cancer information nurses
Freephone 0808 800 4040
