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Table 1 Overview of risk information communicated in the intervention

From: Design of the BRISC study: a multicentre controlled clinical trial to optimize the communication of breast cancer risks in genetic counselling

Population risk:
Lifetime breast cancer risk: 10 out of 100 for breast cancer patients
Breast cancer risk due to hereditary causes: 5 to 10 out of 100
Carriers of BRCA1/BRCA2 mutation:
Lifetime breast cancer risk: 60 to 80 out of 100
Risk passing a BRCA1/BRCA2 mutation to children: 50 out of 100
Women with the same family history:
Lifetime breast cancer risk:
   - 11–20 out of 100 for women in a low risk category
   - 20–30 out of 100 for women in a moderate risk category
   - 30–40 out of 100 for women in a high risk category
Risk having a BRCA1/BRCA2 mutation: less than 10 out of 100 and specified if more than 10 out of 100