Table 4.

Breast cancer risk and recurrence rates among BRCA mutation carriers and individuals without BRCA mutations.

Type of patient	Probability of Breast Cancer over lifetime	Probability of contralateral breast cancer	Probability of synchronous contralateral breast cancer
BRCA mutation carriers	BRCA 1 mutation: 57-65% BRCA 2 mutation: 45-69% 140-143	40% within 10 years after initial diagnosis of breast cancer 140-143	3-5% 139,144
Individuals without BRCA mutation	12.2% 145	6% within 10 years after initial diagnosis of breast cancer 146	3-5% 139,14