Table 1.

Summary of samples and genotyping platforms used in the discovery and validation stages

Stage	Study	Type	No. of samples after quality control	Genotyping platform
Discovery	Swedish	ER-negative cases	153	HumanHap300 supplemented by HumanHap240S
		Controls	764	HumanHap550
		Additional controls from EIRA study	650	HumanHap300
	Finnish	ER-negative cases	226	HumanHap550
		ER-negative cases	238	Quad610 (v1)
		Controls	3169	HumanHap370Duo
Validation	SEARCH and RBCS	ER-negative cases	1011	Taqman
		Controls	7604	Taqman

ER, estrogen receptor; RBCS, Rotterdam Breast Cancer Study; SEARCH, Study of Epidemiology and Risk factors in Cancer Heredity.