Table 1.

Breast cancer cases with DNA sequence data and those carrying deleterious mutations by age group.

Age	BRCA1 total with sequenced data	BRCA1 deleterious mutation number	BRCA2 total with sequenced data	BRCA2 deleterious mutation number
<40	392	13	179	11
40-49	102	4	34	0
50-59	186	1	32	0
Total	680	18	245	11