Table 1:

Overview of marker content and array design across commercially available platforms and coverage of common variation (MAF > 0.05) based on HapMap phase II data

Platform	Number of markers	Array design	Coverage in CEUa (%)	Coverage in JPTb + CHBc (%)	Coverage in YRId (%)	Source
Illumina Human-1	More than 109 000	Gene	26	28	12	[16]
Illumina HumanHap300	317 511	Tag	75	63	28	[16]
Affymetrix SNP Array 5.0	500 568	Random	65	66	41	[16]
Illumina HumanHap550	555 352	Tag	87	83	50	[17]
Illumina Human610	620 901	Tag, CNVe	89	86	58	[18]
Illumina HumanHap650Y	660 917	Tag	87	84	60	[17]
Affymetrix SNP Array 6.0	More than 1 800 000	Random + Tag, CNVe	83	84	62	[17]
Illumina Human1M	1 199 187	Tag, CNVe	93	92	68	[17]

^aUtah residents with ancestry from northern and western Europe.

^bJapanese from Tokyo, Japan.

^cHan Chinese from Beijing, China.

^dYoruba from Ibadan, Nigeria.

^eCopy number variation.