Table 1

 The frequency of large genomic rearrangements in BRCA1 and BRCA2 in a large clinic based population previously negative for BRCA1/2 mutations

Frequency of genomic rearrangements
Family type BRCA1 BRCA2
Female breast cancer only2/179 (1.1%)0/65
Female breast and ovarian cancer4/83 (4.8%)0/59
Female and male breast cancer0/93/25 (12%)
Total6/271 (2.2%)3/149 (2%)