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. 2008 Mar 18;98(8):1457–1466. doi: 10.1038/sj.bjc.6604305

Table 2. Number of breast and ovarian cancer cases among the relatives of index cases, by the age at diagnosis and the mutation status of the index case.

  BRCA1 carriers
BRCA2 carriers
Noncarriers
Age group (years) BC OC BC OC BC OC
<20 0 0 0 0 0 0
20–29 6 7 5 0 7 4
30–39 58 25 34 0 79 2
40–49 84 10 55 2 180 10
50–59 36 9 46 13 135 12
60–69 19 9 28 3 96 5
70+ 12 3 20 4 78 12

BC=breast cancer; OC=ovarian cancer.