GENESIS: a French national resource to study the missing heritability of breast cancer

BMC Cancer

Table 3 Available data on sibships with affected sisters

Number of sisters with breast cancer per sibship	Number of sibships with
	Signed consent forms	Completed questionnaires	Blood samples	Mammograms collected
at least 2^a	696	678	669	362
exactly 2^a	616	600	592	324
exactly 3^a	69	67	67	34
exactly 4^a	10	10	9	4
exactly 5^a	1	1	1	0

ISSN: 1471-2407